Files
crewAI/lib/crewai/tests/tools
Joao Moura 55160c68fd fix(tools): make ignore truly silent, stop caching failures, close 4 gaps
Six findings from the latest review round, all verified against the code
before touching it.

`ignore` was not silent. `ToolUsageFinishedEvent.failure` was set before
the policy ran, so traces still saw a failed call under a policy documented
as surfacing nothing. Worse, the console then showed *no* panel at all:
green was suppressed because `failure` was present, red was skipped because
`ignore` never emits `ToolFailureDetectedEvent`. New `reportable_failure()`
resolves the policy before the finished event and drops the flag under
`ignore`; wired into all four execution paths.

Failures were being cached. `CacheHandler.add` stored a `ToolFailure` like
any other result, so a transient error became permanent for the rest of the
run and every later hit re-reported a call that never re-ran. The cache now
refuses to store declared failures -- fixed at the single choke point rather
than at each of the four call sites.

A spent `max_usage_count` was invisible on the shared native path.
`BaseTool._claim_usage` returned a bare string that only the executors
recognising that exact message treated as a failure. It now returns a
`ToolFailure` with `USAGE_LIMIT`, so every path records it.

A guardrail returning a whole `TaskOutput` replaced the output without
carrying accumulated failures over, so earlier attempts vanished from
`CrewOutput.tool_failures`. New `merge_tool_failures()` combines and
deduplicates, and the retry-rebuild path uses it too.

A hook-blocked call inherited a cached failure and attributed it to a call
that never ran. Now cleared. Not reachable through the built-in cache once
failures stop being cached, so the test injects a custom cache handler that
does retain them -- verified to fail without the guard.

Also removed a `datetime` import left unused by the earlier console-test
rewrite.

Testing: 13 further tests, 73 total. Full suite matches baseline exactly at
377 pre-existing failures; the usage-limit suites that `_claim_usage`
touches pass unchanged; 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 09:16:52 -07:00
..
2025-10-20 14:10:19 -07:00