fix(ai): restore Responses tool input semantics - #40553
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* upstream/v2: (28 commits) refactor(app): gate unsupported v2 capabilities (anomalyco#40381) fix(app): show active search details (anomalyco#40597) refactor(app): migrate supported v2 APIs (anomalyco#40378) fix(app): reconcile v2 session projections (anomalyco#40376) refactor(app): own rendering contracts (anomalyco#40375) fix(core): make xAI OAuth device-only (anomalyco#40538) test(app): migrate e2e fixtures to v2 (anomalyco#40374) fix(core): report missing shell workdir (anomalyco#40542) fix(ai): restore Responses tool input semantics (anomalyco#40553) fix(ai): classify malformed Responses tool calls (anomalyco#40549) feat(tui): streamline tab navigation shortcuts (anomalyco#40551) fix(ai): preserve Gemini tool finish semantics (anomalyco#40546) fix: retry empty incomplete streams (anomalyco#40535) fix(app): finish tool call ID rename (anomalyco#40539) refactor: rename tool call ID fields fix(client): wait for live service contenders (anomalyco#40515) chore(core): drop unreachable AI SDK provider packages (anomalyco#40504) fix(tui): update tab titles immediately (anomalyco#40318) fix(tui): show branch beside directory (anomalyco#40500) feat(vcs): publish branch updates (anomalyco#40371) ...
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Summary
tool-callsfinish boundarytool-input-erroras the precise non-executable outcomeWhy
Malformed function arguments are a recoverable tool-level failure, not a provider or transport failure. The model attempted tool use, the runtime records a non-executed
tool.input-jsonfailure, and the enclosing agent can return that failure for correction.The common finish reason has no dedicated
tool-errorvalue.tool-callsmarks the model tool boundary whiletool-input-errorcarries the exact failure. This matches the existing Chat, Anthropic, and Bedrock behavior. Explicit provider truncation and content-filter reasons retain precedence.This is a direct restoration of the previous Responses behavior with no additional refactor.
Tests
bun test test/provider/openai-responses.test.tsbun typecheckbun x prettier --check packages/ai/src/protocols/open-responses.ts packages/ai/test/provider/openai-responses.test.tsRequested by: @rekram1-node (Aiden Cline via Slack)