{"trace_id":"duration-fix-20260902","schema_version":"1.0.0","title":"A failing duration formatter, traced through a representative agent loop","task":{"prompt":"Find why the duration formatter says ‘60 min’ instead of ‘1 hr,’ fix it, and verify the change.","category":"debug-and-verify","result":"The initial behavior test failed as expected; the reviewed edit compiled and all three unchanged tests passed.","success":true,"evidence_state":"representative"},"agent":{"name":"Deterministic environment-side stand-in","model":null,"harness":"MTS capture.mjs","harness_version":"1.0.0","disclosure":"No live model or paid API was called. Model, context, and tool-decision steps are documented representative boundaries around locally observed environment work."},"environment":{"repository":"MTS representative duration-formatting fixture","fixture":"research/agent-infrastructure/trace/fixture","operating_system":"Darwin 23.6.0 (x64), Node.js v24.19.0","processor":"Intel Core i7-9750H; 12 logical CPUs reported as host capacity, not task allocation","allocated_cpu":{"value":null,"unit":"logical_cpu","state":"unknown","method":"No scheduler or container allocation record was available.","note":"The available instrumentation cannot resolve this measurement."},"allocated_memory":{"value":null,"unit":"bytes","state":"unknown","method":"No scheduler or container allocation record was available.","note":"The available instrumentation cannot resolve this measurement."}},"captured_at":"2026-09-02T21:34:28.525Z","timeline_semantics":"Order is representative of a documented agent loop. Measured environment spans retain captured durations; unobserved boundaries use editorial display widths and never imply provider latency.","events":[{"id":"prompt","parent_id":null,"order":1,"kind":"human","label":"User submits the debugging task","short_label":"Submit task","evidence_state":"representative","timeline":{"display_start_ms":0,"display_duration_ms":9,"semantics":"editorial-sequence"},"interpretation":{"what":"A person asks the agent to find, fix, and verify a concrete defect.","why":"The prompt defines both the objective and the observable completion condition.","where":"User interface and session state","primary_resource":"human","secondary_resources":["harness","memory"],"critical_path_note":"The task cannot begin until intent is captured."},"resources":[{"resource":"human","role":"primary","state":"representative","detail":"The task text is preserved in the fixture."},{"resource":"harness","role":"supporting","state":"representative","detail":"A production harness would create or update session state."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No duration was captured for this representative or unobserved boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No per-operation peak resident memory was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical input set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No provider-side accelerator telemetry was exposed to this harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":null,"process_count":{"value":null,"unit":"count","state":"missing","method":"No local process boundary was observed for this event.","note":"Null is preserved; absence is not converted to zero."}},"source_ids":["mts-trace","openai-agent-loop"],"limitations":["The prompt was selected for a deterministic fixture, not submitted to a live agent."]},{"id":"context","parent_id":"prompt","order":2,"kind":"orchestration","label":"Harness assembles instructions and context","short_label":"Build context","evidence_state":"representative","timeline":{"display_start_ms":10,"display_duration_ms":10,"semantics":"editorial-sequence"},"interpretation":{"what":"The harness would combine the task with policy, conversation state, and tool definitions.","why":"The model needs an actionable view of the task and the interfaces it may use.","where":"Agent harness and session service","primary_resource":"harness","secondary_resources":["cpu","memory","storage"],"critical_path_note":"Context construction precedes each model request and can add retrieval or serialization latency."},"resources":[{"resource":"harness","role":"primary","state":"representative","detail":"Documented by OpenAI as part of the agent loop."},{"resource":"cpu","role":"supporting","state":"representative","detail":"General-purpose control flow prepares the request."},{"resource":"memory","role":"supporting","state":"unknown","detail":"No production session-memory telemetry is available."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No duration was captured for this representative or unobserved boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No per-operation peak resident memory was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical input set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No provider-side accelerator telemetry was exposed to this harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":null,"process_count":{"value":null,"unit":"count","state":"missing","method":"No local process boundary was observed for this event.","note":"Null is preserved; absence is not converted to zero."}},"source_ids":["openai-agent-loop","openai-harness"],"limitations":["No proprietary production context payload was observed."]},{"id":"model-one","parent_id":"context","order":3,"kind":"inference","label":"Model proposes the first tool action","short_label":"Model decision","evidence_state":"missing","timeline":{"display_start_ms":21,"display_duration_ms":13,"semantics":"editorial-sequence"},"interpretation":{"what":"In a live run, a model response would propose how to inspect the repository.","why":"The harness needs a next action rather than a final answer.","where":"Remote model-serving endpoint; exact topology unknown","primary_resource":"gpu","secondary_resources":["cpu","memory","network"],"critical_path_note":"The next environment action waits for the model response."},"resources":[{"resource":"gpu","role":"primary","state":"representative","detail":"Accelerators are the representative model-serving resource; the provider device for this scenario is unknown."},{"resource":"cpu","role":"supporting","state":"unknown","detail":"Provider host-CPU activity was not exposed."},{"resource":"memory","role":"supporting","state":"unknown","detail":"Provider model and cache memory traffic was not exposed."},{"resource":"network","role":"transport","state":"unknown","detail":"A production model boundary would require transport, but no live request was sent in this capture."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No duration was captured for this representative or unobserved boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No per-operation peak resident memory was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical input set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No provider-side accelerator telemetry was exposed to this harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":null,"process_count":{"value":null,"unit":"count","state":"missing","method":"No local process boundary was observed for this event.","note":"Null is preserved; absence is not converted to zero."}},"source_ids":["openai-agent-loop","anthropic-managed-agents","mts-trace"],"limitations":["No model was called. Model latency, tokens, device type, GPU utilization, queueing, and energy are missing."]},{"id":"tool-one","parent_id":"model-one","order":4,"kind":"orchestration","label":"Harness validates and routes the tool request","short_label":"Route tool","evidence_state":"representative","timeline":{"display_start_ms":35,"display_duration_ms":8,"semantics":"editorial-sequence"},"interpretation":{"what":"The response is interpreted as a permitted search-and-read action.","why":"Tool routing turns model output into a controlled environment operation.","where":"Harness policy and tool router","primary_resource":"harness","secondary_resources":["cpu","memory"],"critical_path_note":"Validation is sequential with the proposed action."},"resources":[{"resource":"harness","role":"primary","state":"representative","detail":"The harness validates and dispatches tool calls."},{"resource":"cpu","role":"supporting","state":"representative","detail":"Parsing and policy evaluation are control-flow work."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No duration was captured for this representative or unobserved boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No per-operation peak resident memory was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical input set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No provider-side accelerator telemetry was exposed to this harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":null,"process_count":{"value":null,"unit":"count","state":"missing","method":"No local process boundary was observed for this event.","note":"Null is preserved; absence is not converted to zero."}},"source_ids":["openai-harness","openai-safety","mcp-tools"],"limitations":["The production policy implementation and routing latency are unknown."]},{"id":"workspace","parent_id":"tool-one","order":5,"kind":"environment","label":"Create an isolated working copy","short_label":"Open workspace","evidence_state":"observed","timeline":{"display_start_ms":44,"display_duration_ms":9,"semantics":"editorial-sequence"},"interpretation":{"what":"Five fixture files are copied into a temporary working directory and hashed.","why":"Isolation keeps the task reproducible and prevents the measurement run from editing the source fixture.","where":"Local operating system and temporary filesystem","primary_resource":"storage","secondary_resources":["cpu","memory"],"critical_path_note":"Search and execution require a workspace first."},"resources":[{"resource":"storage","role":"primary","state":"observed","detail":"The harness copied and hashed the bounded fixture."},{"resource":"memory","role":"supporting","state":"partial","detail":"Peak resident memory is available only for measured subprocesses."},{"resource":"storage","role":"supporting","state":"partial","detail":"Named logical fixture bytes are counted; total device traffic is not."},{"resource":"gpu","role":"not-observed","state":"missing","detail":"No local or provider accelerator telemetry was collected."},{"resource":"network","role":"not-observed","state":"missing","detail":"No byte counter was attached; zero traffic is not asserted."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":8.977,"unit":"ms","state":"derived","method":"Subtracted monotonic harness clock readings around the operation."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"The in-process operation had no per-operation processor counter.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"The in-process operation had no per-operation processor counter.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"Peak resident memory was unavailable for this in-process event.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":958,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture inputs; runtime libraries, caches, and physical reads are excluded."},"filesystem_write_bytes":{"value":958,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture outputs; caches and physical writes are excluded."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached; zero traffic is not asserted.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No GPU telemetry was available to the local harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":0,"process_count":{"value":0,"unit":"count","state":"observed","method":"Counted measurement-wrapper processes started by the capture harness."}},"source_ids":["mts-trace","anthropic-sandboxing"],"limitations":["This is an isolated directory, not a measured container or virtual-machine startup."]},{"id":"search","parent_id":"workspace","order":6,"kind":"tool","label":"Search for the formatter and its tests","short_label":"Search repo","evidence_state":"observed","timeline":{"display_start_ms":54,"display_duration_ms":18,"semantics":"editorial-sequence"},"interpretation":{"what":"A repository search locates the duration formatter and assertions that specify the desired behavior.","why":"The agent needs the smallest relevant context before editing.","where":"Local subprocess and fixture filesystem","primary_resource":"cpu","secondary_resources":["storage","memory"],"critical_path_note":"The next read depends on search results."},"resources":[{"resource":"cpu","role":"primary","state":"observed","detail":"A measured subprocess executes the bounded search."},{"resource":"memory","role":"supporting","state":"partial","detail":"Peak resident memory is available only for measured subprocesses."},{"resource":"storage","role":"supporting","state":"partial","detail":"Named logical fixture bytes are counted; total device traffic is not."},{"resource":"gpu","role":"not-observed","state":"missing","detail":"No local or provider accelerator telemetry was collected."},{"resource":"network","role":"not-observed","state":"missing","detail":"No byte counter was attached; zero traffic is not asserted."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":18.012,"unit":"ms","state":"derived","method":"Subtracted monotonic harness clock readings around the operation."},"cpu_user_ms":{"value":0,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"cpu_system_ms":{"value":0,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"max_rss_bytes":{"value":3887104,"unit":"bytes","state":"observed","method":"Reported by macOS /usr/bin/time for the measured subprocess."},"filesystem_read_bytes":{"value":864,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture inputs; runtime libraries, caches, and physical reads are excluded."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was assigned to this event.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached; zero traffic is not asserted.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No GPU telemetry was available to the local harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":0,"process_count":{"value":1,"unit":"count","state":"observed","method":"Counted measurement-wrapper processes started by the capture harness."}},"source_ids":["mts-trace","codex-exec"],"limitations":["CPU counters are coarse; reported zero can mean below the 0.01-second reporting floor."]},{"id":"read","parent_id":"search","order":7,"kind":"tool","label":"Read the faulty implementation","short_label":"Read file","evidence_state":"observed","timeline":{"display_start_ms":73,"display_duration_ms":6,"semantics":"editorial-sequence"},"interpretation":{"what":"The implementation is read from the isolated workspace.","why":"The fix depends on the exact current branch condition and output format.","where":"Local subprocess and fixture filesystem","primary_resource":"storage","secondary_resources":["cpu","memory"],"critical_path_note":"The defect cannot be diagnosed without the code."},"resources":[{"resource":"storage","role":"primary","state":"observed","detail":"A measured subprocess reads the 144-byte implementation."},{"resource":"memory","role":"supporting","state":"partial","detail":"Peak resident memory is available only for measured subprocesses."},{"resource":"storage","role":"supporting","state":"partial","detail":"Named logical fixture bytes are counted; total device traffic is not."},{"resource":"gpu","role":"not-observed","state":"missing","detail":"No local or provider accelerator telemetry was collected."},{"resource":"network","role":"not-observed","state":"missing","detail":"No byte counter was attached; zero traffic is not asserted."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":5.895,"unit":"ms","state":"derived","method":"Subtracted monotonic harness clock readings around the operation."},"cpu_user_ms":{"value":0,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"cpu_system_ms":{"value":0,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"max_rss_bytes":{"value":602112,"unit":"bytes","state":"observed","method":"Reported by macOS /usr/bin/time for the measured subprocess."},"filesystem_read_bytes":{"value":144,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture inputs; runtime libraries, caches, and physical reads are excluded."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was assigned to this event.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached; zero traffic is not asserted.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No GPU telemetry was available to the local harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":0,"process_count":{"value":1,"unit":"count","state":"observed","method":"Counted measurement-wrapper processes started by the capture harness."}},"source_ids":["mts-trace"],"limitations":["144 bytes is a logical file-size count, not device I/O."]},{"id":"compile-red","parent_id":"read","order":8,"kind":"verification","label":"Compile the initial TypeScript","short_label":"Compile","evidence_state":"observed","timeline":{"display_start_ms":80,"display_duration_ms":48,"semantics":"editorial-sequence"},"interpretation":{"what":"The unchanged fixture is compiled before behavioral verification.","why":"This distinguishes a logic defect from a syntax or type failure.","where":"Node.js and TypeScript compiler subprocess","primary_resource":"cpu","secondary_resources":["memory","storage"],"critical_path_note":"Verification waits for compilation; CPU totals exceed wall time because compiler work can use multiple threads."},"resources":[{"resource":"cpu","role":"primary","state":"observed","detail":"The TypeScript compiler performs branch-heavy program analysis and code generation."},{"resource":"memory","role":"supporting","state":"partial","detail":"Peak resident memory is available only for measured subprocesses."},{"resource":"storage","role":"supporting","state":"partial","detail":"Named logical fixture bytes are counted; total device traffic is not."},{"resource":"gpu","role":"not-observed","state":"missing","detail":"No local or provider accelerator telemetry was collected."},{"resource":"network","role":"not-observed","state":"missing","detail":"No byte counter was attached; zero traffic is not asserted."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":1352.192,"unit":"ms","state":"derived","method":"Subtracted monotonic harness clock readings around the operation."},"cpu_user_ms":{"value":2400,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"cpu_system_ms":{"value":190,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"max_rss_bytes":{"value":320258048,"unit":"bytes","state":"observed","method":"Reported by macOS /usr/bin/time for the measured subprocess."},"filesystem_read_bytes":{"value":448,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture inputs; runtime libraries, caches, and physical reads are excluded."},"filesystem_write_bytes":{"value":137,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture outputs; caches and physical writes are excluded."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached; zero traffic is not asserted.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No GPU telemetry was available to the local harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":0,"process_count":{"value":1,"unit":"count","state":"observed","method":"Counted measurement-wrapper processes started by the capture harness."}},"source_ids":["mts-trace"],"limitations":["Peak RSS is command-level; per-core utilization and nested process counts are missing."]},{"id":"test-red","parent_id":"compile-red","order":9,"kind":"verification","label":"Behavior test fails as expected","short_label":"Test fails","evidence_state":"observed","timeline":{"display_start_ms":129,"display_duration_ms":24,"semantics":"editorial-sequence"},"interpretation":{"what":"Two assertions fail because 60 and 90 minutes are still displayed as minutes.","why":"The red test demonstrates the reported problem before the fix.","where":"Node.js test subprocess","primary_resource":"cpu","secondary_resources":["memory","storage"],"critical_path_note":"The failure result becomes new context for diagnosis."},"resources":[{"resource":"cpu","role":"primary","state":"observed","detail":"The unchanged test file executes against the initial build."},{"resource":"memory","role":"supporting","state":"partial","detail":"Peak resident memory is available only for measured subprocesses."},{"resource":"storage","role":"supporting","state":"partial","detail":"Named logical fixture bytes are counted; total device traffic is not."},{"resource":"gpu","role":"not-observed","state":"missing","detail":"No local or provider accelerator telemetry was collected."},{"resource":"network","role":"not-observed","state":"missing","detail":"No byte counter was attached; zero traffic is not asserted."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":220.029,"unit":"ms","state":"derived","method":"Subtracted monotonic harness clock readings around the operation."},"cpu_user_ms":{"value":180,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"cpu_system_ms":{"value":40,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"max_rss_bytes":{"value":41791488,"unit":"bytes","state":"observed","method":"Reported by macOS /usr/bin/time for the measured subprocess."},"filesystem_read_bytes":{"value":647,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture inputs; runtime libraries, caches, and physical reads are excluded."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was assigned to this event.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached; zero traffic is not asserted.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No GPU telemetry was available to the local harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":1,"process_count":{"value":1,"unit":"count","state":"observed","method":"Counted measurement-wrapper processes started by the capture harness."}},"source_ids":["mts-trace"],"limitations":["This small fixture does not represent a production repository test suite."]},{"id":"model-two","parent_id":"test-red","order":10,"kind":"inference","label":"Model would diagnose the failure and propose a fix","short_label":"Diagnose","evidence_state":"missing","timeline":{"display_start_ms":154,"display_duration_ms":14,"semantics":"editorial-sequence"},"interpretation":{"what":"A live model would receive the failing output and decide how to change the formatter.","why":"The environment result closes one loop and opens the next.","where":"Remote model-serving endpoint; exact topology unknown","primary_resource":"gpu","secondary_resources":["cpu","memory","network"],"critical_path_note":"The edit waits for a new model decision in a sequential debugging loop."},"resources":[{"resource":"gpu","role":"primary","state":"representative","detail":"Accelerators are the representative model-serving resource; the provider device for this scenario is unknown."},{"resource":"cpu","role":"supporting","state":"unknown","detail":"Provider host-CPU activity was not exposed."},{"resource":"memory","role":"supporting","state":"unknown","detail":"Provider model and cache memory traffic was not exposed."},{"resource":"network","role":"transport","state":"unknown","detail":"A production model boundary would require transport, but no live request was sent in this capture."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No duration was captured for this representative or unobserved boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No per-operation peak resident memory was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical input set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No provider-side accelerator telemetry was exposed to this harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":null,"process_count":{"value":null,"unit":"count","state":"missing","method":"No local process boundary was observed for this event.","note":"Null is preserved; absence is not converted to zero."}},"source_ids":["openai-agent-loop","anthropic-managed-agents","mts-trace"],"limitations":["The reviewed fix was scripted for reproducibility; no model diagnosis was captured."]},{"id":"edit","parent_id":"model-two","order":11,"kind":"tool","label":"Apply the reviewed formatter fix","short_label":"Write fix","evidence_state":"observed","timeline":{"display_start_ms":169,"display_duration_ms":5,"semantics":"editorial-sequence"},"interpretation":{"what":"The corrected implementation replaces the faulty formatter in the isolated workspace.","why":"The explicit fix turns the failed behavioral condition into an implementation change.","where":"Capture harness and local filesystem","primary_resource":"storage","secondary_resources":["cpu","memory"],"critical_path_note":"Compilation cannot restart until the new bytes are persisted."},"resources":[{"resource":"storage","role":"primary","state":"observed","detail":"The capture harness reads and writes the 270-byte fixed implementation."},{"resource":"memory","role":"supporting","state":"partial","detail":"Peak resident memory is available only for measured subprocesses."},{"resource":"storage","role":"supporting","state":"partial","detail":"Named logical fixture bytes are counted; total device traffic is not."},{"resource":"gpu","role":"not-observed","state":"missing","detail":"No local or provider accelerator telemetry was collected."},{"resource":"network","role":"not-observed","state":"missing","detail":"No byte counter was attached; zero traffic is not asserted."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":2.181,"unit":"ms","state":"derived","method":"Subtracted monotonic harness clock readings around the operation."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"The in-process operation had no per-operation processor counter.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"The in-process operation had no per-operation processor counter.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"Peak resident memory was unavailable for this in-process event.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":270,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture inputs; runtime libraries, caches, and physical reads are excluded."},"filesystem_write_bytes":{"value":270,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture outputs; caches and physical writes are excluded."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached; zero traffic is not asserted.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No GPU telemetry was available to the local harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":0,"process_count":{"value":0,"unit":"count","state":"observed","method":"Counted measurement-wrapper processes started by the capture harness."}},"source_ids":["mts-trace"],"limitations":["The edit was deterministic; it does not measure model-generated patch creation."]},{"id":"compile-green","parent_id":"edit","order":12,"kind":"verification","label":"Compile the fixed TypeScript","short_label":"Recompile","evidence_state":"observed","timeline":{"display_start_ms":175,"display_duration_ms":52,"semantics":"editorial-sequence"},"interpretation":{"what":"The edited implementation is type-checked and compiled.","why":"A behavior fix is incomplete if it breaks the program build.","where":"Node.js and TypeScript compiler subprocess","primary_resource":"cpu","secondary_resources":["memory","storage"],"critical_path_note":"Final tests depend on a successful build."},"resources":[{"resource":"cpu","role":"primary","state":"observed","detail":"The compiler repeats its environment-side work after the edit."},{"resource":"memory","role":"supporting","state":"partial","detail":"Peak resident memory is available only for measured subprocesses."},{"resource":"storage","role":"supporting","state":"partial","detail":"Named logical fixture bytes are counted; total device traffic is not."},{"resource":"gpu","role":"not-observed","state":"missing","detail":"No local or provider accelerator telemetry was collected."},{"resource":"network","role":"not-observed","state":"missing","detail":"No byte counter was attached; zero traffic is not asserted."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":1559.244,"unit":"ms","state":"derived","method":"Subtracted monotonic harness clock readings around the operation."},"cpu_user_ms":{"value":2740,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"cpu_system_ms":{"value":230,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"max_rss_bytes":{"value":319369216,"unit":"bytes","state":"observed","method":"Reported by macOS /usr/bin/time for the measured subprocess."},"filesystem_read_bytes":{"value":574,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture inputs; runtime libraries, caches, and physical reads are excluded."},"filesystem_write_bytes":{"value":271,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture outputs; caches and physical writes are excluded."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached; zero traffic is not asserted.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No GPU telemetry was available to the local harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":0,"process_count":{"value":1,"unit":"count","state":"observed","method":"Counted measurement-wrapper processes started by the capture harness."}},"source_ids":["mts-trace"],"limitations":["Peak RSS is command-level; per-core utilization and nested process counts are missing."]},{"id":"test-green","parent_id":"compile-green","order":13,"kind":"verification","label":"All three behavior tests pass","short_label":"Tests pass","evidence_state":"observed","timeline":{"display_start_ms":228,"display_duration_ms":23,"semantics":"editorial-sequence"},"interpretation":{"what":"The unchanged tests now accept 1 hour, 1 hour 30 minutes, and 45 minutes.","why":"The transition from red to green is the captured completion proof.","where":"Node.js test subprocess","primary_resource":"cpu","secondary_resources":["memory","storage"],"critical_path_note":"The final response should wait for this verification result."},"resources":[{"resource":"cpu","role":"primary","state":"observed","detail":"The same test command executes against the fixed build."},{"resource":"memory","role":"supporting","state":"partial","detail":"Peak resident memory is available only for measured subprocesses."},{"resource":"storage","role":"supporting","state":"partial","detail":"Named logical fixture bytes are counted; total device traffic is not."},{"resource":"gpu","role":"not-observed","state":"missing","detail":"No local or provider accelerator telemetry was collected."},{"resource":"network","role":"not-observed","state":"missing","detail":"No byte counter was attached; zero traffic is not asserted."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":199.037,"unit":"ms","state":"derived","method":"Subtracted monotonic harness clock readings around the operation."},"cpu_user_ms":{"value":160,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"cpu_system_ms":{"value":40,"unit":"ms","state":"partial","method":"Parsed from macOS /usr/bin/time at 0.01-second precision.","note":"A reported zero may be below the reporting floor."},"max_rss_bytes":{"value":41291776,"unit":"bytes","state":"observed","method":"Reported by macOS /usr/bin/time for the measured subprocess."},"filesystem_read_bytes":{"value":781,"unit":"bytes","state":"partial","method":"Sum of explicitly named fixture inputs; runtime libraries, caches, and physical reads are excluded."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was assigned to this event.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached; zero traffic is not asserted.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No GPU telemetry was available to the local harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":0,"process_count":{"value":1,"unit":"count","state":"observed","method":"Counted measurement-wrapper processes started by the capture harness."}},"source_ids":["mts-trace"],"limitations":["This verifies one bounded fixture, not an external application or browser."]},{"id":"result-processing","parent_id":"test-green","order":14,"kind":"orchestration","label":"Harness captures and compresses the result","short_label":"Process result","evidence_state":"representative","timeline":{"display_start_ms":252,"display_duration_ms":8,"semantics":"editorial-sequence"},"interpretation":{"what":"Exit status and test output would be attached to the next turn as structured context.","why":"Raw tool output must be bounded and made legible before the model can use it.","where":"Agent harness and session state","primary_resource":"harness","secondary_resources":["cpu","memory","storage"],"critical_path_note":"Final response generation depends on the verification evidence."},"resources":[{"resource":"harness","role":"primary","state":"representative","detail":"The harness processes tool output into the next model input."},{"resource":"cpu","role":"supporting","state":"representative","detail":"Parsing and serialization are general-purpose compute."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No duration was captured for this representative or unobserved boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No per-operation peak resident memory was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical input set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No provider-side accelerator telemetry was exposed to this harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":null,"process_count":{"value":null,"unit":"count","state":"missing","method":"No local process boundary was observed for this event.","note":"Null is preserved; absence is not converted to zero."}},"source_ids":["openai-agent-loop","openai-harness","mts-trace"],"limitations":["The local harness preserved output but did not measure production result compression."]},{"id":"model-three","parent_id":"result-processing","order":15,"kind":"inference","label":"Model would compose the verified answer","short_label":"Final model","evidence_state":"missing","timeline":{"display_start_ms":261,"display_duration_ms":13,"semantics":"editorial-sequence"},"interpretation":{"what":"A live model would turn the verified environment result into an answer for the user.","why":"The final response should report what changed and why the task is complete.","where":"Remote model-serving endpoint; exact topology unknown","primary_resource":"gpu","secondary_resources":["cpu","memory","network"],"critical_path_note":"User-visible completion waits for this last response."},"resources":[{"resource":"gpu","role":"primary","state":"representative","detail":"Accelerators are the representative model-serving resource; the provider device for this scenario is unknown."},{"resource":"cpu","role":"supporting","state":"unknown","detail":"Provider host-CPU activity was not exposed."},{"resource":"memory","role":"supporting","state":"unknown","detail":"Provider model and cache memory traffic was not exposed."},{"resource":"network","role":"transport","state":"unknown","detail":"A production model boundary would require transport, but no live request was sent in this capture."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No duration was captured for this representative or unobserved boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No per-operation peak resident memory was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical input set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No provider-side accelerator telemetry was exposed to this harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":null,"process_count":{"value":null,"unit":"count","state":"missing","method":"No local process boundary was observed for this event.","note":"Null is preserved; absence is not converted to zero."}},"source_ids":["openai-agent-loop","mts-trace"],"limitations":["No final model call, tokens, latency, or provider hardware telemetry was captured."]},{"id":"response","parent_id":"model-three","order":16,"kind":"response","label":"Return the verified completion","short_label":"Respond","evidence_state":"derived","timeline":{"display_start_ms":275,"display_duration_ms":9,"semantics":"editorial-sequence"},"interpretation":{"what":"The workflow can truthfully report that the initial test failed and the edited code compiled with all tests passing.","why":"Completion is derived from preserved exit statuses rather than asserted by the animation.","where":"User interface","primary_resource":"harness","secondary_resources":["human","network"],"critical_path_note":"This is the end of the sequential critical path."},"resources":[{"resource":"harness","role":"primary","state":"derived","detail":"The completion state follows from captured command outcomes."},{"resource":"human","role":"waiting","state":"representative","detail":"The user receives the answer after verification."}],"observed":{"started_at":null,"ended_at":null,"wall_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No duration was captured for this representative or unobserved boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_user_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"cpu_system_ms":{"value":null,"unit":"ms","state":"missing","method":"No per-operation processor time was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"max_rss_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No per-operation peak resident memory was captured for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_read_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical input set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"filesystem_write_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No bounded logical output set was observed for this boundary.","note":"Null is preserved; absence is not converted to zero."},"network_bytes":{"value":null,"unit":"bytes","state":"missing","method":"No network byte counter was attached.","note":"Null is preserved; absence is not converted to zero."},"gpu_time_ms":{"value":null,"unit":"ms","state":"missing","method":"No provider-side accelerator telemetry was exposed to this harness.","note":"Null is preserved; absence is not converted to zero."},"exit_code":null,"process_count":{"value":null,"unit":"count","state":"missing","method":"No local process boundary was observed for this event.","note":"Null is preserved; absence is not converted to zero."}},"source_ids":["mts-trace"],"limitations":["The prose response is representative; the success transition is measured."]}],"source_ids":["mts-trace","openai-agent-loop","openai-harness","openai-safety","anthropic-managed-agents","anthropic-sandboxing","mcp-tools","codex-exec"],"transformations":["The raw harness trace is preserved unchanged under research/agent-infrastructure/trace/raw/observations.json.","Measured command spans were normalized into the publication schema without converting null values to zero.","Documented context, tool-routing, model, and result-processing boundaries were added as representative events with null measurements.","Observed timings retain millisecond values; visual widths use an editorial sequence so missing provider latency is never implied."],"limitations":["No model or paid API was called, so the trace is not a production Codex or Claude Code telemetry capture.","Model identity, tokens, inference latency, provider CPU/GPU activity, queueing, utilization, and energy are missing.","CPU time is a command total at 0.01-second source precision, not sampled utilization or loaded-core performance.","Storage figures are selected logical file sizes, not total filesystem or device traffic; network bytes were not measured.","One deterministic fixture cannot establish an industry-wide CPU/GPU workload share."]}