fix(agent): mark failed agent.run spans as ERROR with their run error code - #4600
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… code A run that ended on a terminal RunError, or whose runtime stream threw, recorded agent.run.final_status=failed but left the span status UNSET, so error searches in Tempo missed every failed internal agent run. The finalized log for those runs also carried no error. Failed runs now set ERROR status with the stable run error code as the status message, error.type carries the RunError code, and the finalized log is a warn with errorCode and error. agent.run.tool_error_count records tool failures the run recovered from, so a completed run with failed tools stays distinguishable from an unresolved failure without being marked ERROR. Cancellation stays UNSET.
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A server module in a client graph aborts hydration in the browser. New leaks fail CI; known leaks are tracked in |
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Navigate logical layers of code changes, visualize relationships, and explore their blast radius. No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Repository UI Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (8)
Included review availability: This review used your included allowance. Your plan provides up to 1 included review per hour; 0 remain after this review. 📝 WalkthroughWalkthroughThe tracing APIs now mark spans failed with stable error codes. Hosted run finalization and the internal run stream use these codes when recording failure status and context. The run stream also distinguishes errors from recognized child-run tools from other tool errors. ChangesRun Span Failure Reporting
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant RuntimeStream
participant RunStream
participant SpanFailureAPI
participant OpenTelemetrySpan
participant Logger
RuntimeStream->>RunStream: provide run events or throw
RunStream->>RunStream: select error code and count tool errors
RunStream->>SpanFailureAPI: mark failed span with error code
SpanFailureAPI->>OpenTelemetrySpan: set ERROR status
RunStream->>Logger: log failure context
Merge Risk: ⚪ Minimal · up to Failed runs now report error codes on their spans, while completed and cancelled runs retain their intended status. No identified issue prevents merging after normal checks. Security Architecture ReviewSecurity architecture risk: 🔵 Low · up to The change improves failed-run reporting without a demonstrated change to access or execution authority. Error codes newly sent to telemetry are not fully constrained at their source, so a limited exposure question remains. Retained concerns
Security review detailsSecurity Blast Radius
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Code review: 90/100 — solid, well-scoped observability fixReviewed the diff, commit message, and description against Strengths
Minor / non-blocking
No security, correctness, or terminology issues found; concept usage ( Generated by Claude Code |
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In `@src/internal-agents/run-stream.ts`:
- Around line 1639-1640: Update the terminal error logging context so
`terminalRunError?.message` is not logged raw: pass it through a dedicated
diagnostic redactor, or omit it and log only `errorCode`.
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docs/api-reference/veryfront/observability.mdsrc/internal-agents/run-stream.test.tssrc/internal-agents/run-stream.tssrc/observability/tracing/otlp-setup.test.tssrc/observability/tracing/otlp-setup.ts
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…ures ERROR The terminal agent.run path now emits only the stable RunError code, since the message can carry unclassified framework error text. The thrown path reports the same code as error.type and keeps the JS class in error.cause.type. Hosted run spans are marked ERROR with their terminal error code through a new ServiceTracerSpan.markFailed. Failed invoke_agent children are counted apart as agent.run.child_run_error_count, and the terminal logs carry parentRunId, projectId and the error counts.
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A custom tool that shares the invoke_agent name is not a child run, so agent.run.child_run_error_count now counts only control-plane delegation tools and the framework invoke_agent, resolved from the merged tool set.
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… runs A registry grant (true) has already dropped the tool object, so resolve it from the registry and count it as a child run only when it is the framework invoke_agent.
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RunError codes are kept only when they have the shape of a classification;
anything else falls back to AgentRunTerminalError before reaching the span
status or the finalized log. Framework agent_{id} delegate tools now count
as child runs. ServiceTracerSpan.markFailed is optional so existing custom
tracers keep satisfying the public type, and it records the synthetic
exception without a reporting-site stack.
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…iled The hosted run span's error.type, and now its status message, come from the terminal error code a runtime reports. Share the classification-shape check with the internal run path so an arbitrary code falls back to STREAM_ERROR.
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Problem
Failed internal agent runs (the
agent.runspan emitted by veryfront-server) recordagent.run.final_status=failedbut leave the span status UNSET, so Tempo error searches and error-rate queries miss them. TheInternal agent runtime stream finalizedlog for those runs is an info line withstatus: failedand no error.Tempo, production, 7 days to 2026-09-26 (
{ span.agent.run.final_status != nil } | count_over_time() by (status, name, resource.service.name, span.agent.run.final_status), summed per day):Audited sample: trace
b70ad31ab759340c8eef2ea50ca92555(runf7ecacdb-…):agent.runhasfinal_status=failed,error.type=AgentRunTerminalError, no status; the finalized log has no error, while the API loggedterminalErrorCode: insufficient-creditsfor the same run.Root cause
createRuntimeAgentStreamResponse(src/internal-agents/run-stream.ts) settles both failure paths itself: a terminalRunErrorfrom the runtime ends the stream normally, and a thrown stream error is caught. Neither throws throughwithSpan, which is the only place that set ERROR, and neither path set a status on the span. The terminal path also dropped the RunError code and message.Fix
markSpanFailed(span, errorCode)inotlp-setup.ts: sets ERROR with the code as the status message (no stack), through the same guarded pathwithSpanuses.error.type= that code. Only identifier-shaped codes are kept (letter first, then[A-Za-z0-9_.-], at most 64 chars); anything else, or a missing code, becomesAgentRunTerminalError. The finalized log becomeswarnand carrieserrorCode. The RunError message is deliberately not copied into the span or the log, because an unclassified framework failure passes its rawError.messagethrough as the RunError text.RUNTIME_ERRORor the provider replay code).error.typeis that code on both paths now; the JS class moves toerror.cause.type. The failure log gainserrorCode.invoke_agent <agent>spans fromcreateHostedAgentRunSpanController):finalizewithstatus: "failed"now calls the new optionalServiceTracerSpan.markFailed(errorCode)(recorded without a stack), so the span is ERROR with the same code as itserror.type(the terminal error code when it passes the same classification-shape check, otherwiseSTREAM_ERROR). Completed and cancelled runs are unchanged.agent.run.tool_error_count(all failed tool results) andagent.run.child_run_error_count(failed results of child-run tools only: the control-plane injectedinvoke_agent/veryfront__invoke_agent, the framework invoke_agent, and the frameworkagent_{id}delegate tools, identified by provenance rather than name; a custom inline or registry tool that merely shares the name is not counted) on every terminal outcome. A completed run that recovered from them stays out of ERROR and is findable with{ name = "agent.run" && span.agent.run.final_status = "completed" && span.agent.run.child_run_error_count > 0 }. ERROR is not propagated to parents.Internal agent runtime stream finalized/... failed) also carryparentRunIdandprojectIdwhen present, plustoolErrorCountandchildRunErrorCounton the finalized line;trace_idis already injected by the logger.Test evidence
run-stream.test.ts,agent-run-lifecycle.test.tsandservice-tracer.test.tscases failed before the fix.deno task test:fileonsrc/internal-agents/run-stream.test.ts(97 steps),src/agent/runtime/agent-delegation.test.ts(11 tests),src/agent/hosted/agent-run-lifecycle.test.ts(7),src/agent/hosted/durable-child-fork-execution.test.ts(29),src/observability/tracing/service-tracer.test.ts(23),src/observability/tracing/otlp-setup.test.ts(26),src/agent/hosted/trace-attributes.test.ts(9),src/agent/hosted/chat-execution-runtime.test.ts(36),src/agent/hosted/prepared-chat-execution.test.ts(6): all passeddeno task typecheck,deno checkon the changed tests,deno fmt --check,deno linton changed files: cleandeno task lint:testing-front-door: exit 0;TEST_SEMANTIC_AUDIT_BASE_REF=origin/main deno task lint:test-semantic-dispositions: ok;deno task lint:anti-slop: ok;deno task docs:api-reference:check: currentNot in this PR
runId/parentRunIdbut no root run id, so the terminal log cannot name the root; the API owns that relationship.invoke_agentspan has no recovered-child marker; the child failure is distinguishable here on the parentagent.runspan only.After deploy, the expected result is that
{ name = "agent.run" && span.agent.run.final_status = "failed" && status = unset }returns 0 for new runs.Part of veryfront/veryfront-issue-inbox#1862