Files
crewAI/lib
Joao Moura 17ba4a4299 fix(tools): keep a failed tool out of the final answer, finish crew scope
Three more findings, all confirmed against the code.

A failed `result_as_answer` tool still became the task's output. The native
paths already excluded raised errors and hook blocks from short-circuiting,
but not declared failures -- so an error message silently became the answer,
which is the exact shape of bug this PR exists to prevent. Fixed on all
paths, and there were three independent override points, not one:
`ToolResult.result_as_answer` in tool_utils, the `execution_result`
finality checks in both executors, and `process_tool_results()`, which
reads `agent.tools_results` back separately. The first two fixes alone left
the behavior unchanged; only the third made the test pass.

`ToolUsage` never received a crew, so a crew-level `ignore` half-applied:
recording and `ToolFailureDetectedEvent` stayed quiet, but the flag was
still attached to `ToolUsageFinishedEvent`. It now takes and stores `crew`.

`CrewAgentExecutor.invoke`/`ainvoke` routed a deliberate stop through
`handle_unknown_error`, printing "An unknown error occurred" on verbose
runs. LiteAgent already special-cased this; both now do.

Testing: 5 further tests, 79 total, including that a *successful*
`result_as_answer` tool still short-circuits. Full suite matches baseline
exactly at 377 pre-existing failures; mypy clean on every changed file.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01ETacm2dMASfpMAYUiDu5YG
2026-07-29 09:27:03 -07:00
..
2026-07-28 14:59:36 +00:00