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fix(opencode): settle pending tool errors#35268

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Draft

fix(opencode): settle pending tool errors#35268
opencode-agent[bot] wants to merge 1 commit into
devfrom
pending-tool-error

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@opencode-agent opencode-agent Bot commented Jul 4, 2026

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Summary

  • settle tool errors even when the AI SDK emits tool-error before tool-call promotes the part from pending to running
  • preserve the actual tool failure instead of replacing it with cleanup's Tool execution aborted marker
  • add a deterministic processor regression covering the event ordering

Why

MCP isError results began rejecting in #32244. The AI SDK may publish the resulting tool-error while the tool part is still pending. failToolCall previously ignored that state and left its deferred unsettled, which can strand the provider turn.

Verification

  • bun test test/session/processor-effect.test.ts (16 pass)
  • bun typecheck in packages/opencode
  • git diff --check

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