fix: reject invalid tool call inputs and retry#582
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When the AI SDK fails to parse tool call input (marking it as invalid), the runtime was previously casting the malformed input as Record and sending it to the API, causing "Input should be a valid dictionary" errors from Anthropic. Now invalid tool calls are detected and trigger a retry with error context, giving the LLM a chance to regenerate valid tool calls. Also tightens ToolCallPart.args schema from z.unknown() to z.record() for defense-in-depth validation. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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Summary
invalidflag on tool calls and trigger retry with error context instead of casting malformed input and sending to the Anthropic APIToolCallPart.argsschema fromz.unknown()toz.record(z.string(), z.unknown())for defense-in-depth validationmessages.X.content.Y.tool_use.input: Input should be a valid dictionaryAPI errorsTest plan
pnpm typecheckpasses (all 23 packages)pnpm testpasses (1098 tests)pnpm test:e2epasses (76 tests, 18 files)pnpm run validate:changesetpasses🤖 Generated with Claude Code