fix: add retry with exponential backoff for Anthropic API overloaded errors#733
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…errors The Addie bot was failing with overloaded_error (529) from Anthropic API during high load, causing message processing to fail silently. Changes: - Add anthropic-retry.ts utility with isRetryableError and withRetry helpers - Wrap processMessage API call with withRetry (3 retries, exponential backoff) - Add inline retry loop to processMessageStream (only retries before content streams) - Support retryable errors: overloaded_error, 500+, 429, APIConnectionError - Add comprehensive tests for retry behavior 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
- withStreamRetry now throws RetriesExhaustedError for consistency - Streaming path in claude-client wraps exhausted retries in RetriesExhaustedError - Added tests for withStreamRetry (yields, retries, non-retryable, exhausted) - Added test for RetriesExhaustedError.cause containing original error - Added empty changeset 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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Summary
Changes
server/src/utils/anthropic-retry.ts- Core retry utility withwithRetry,withStreamRetry,RetriesExhaustedErrorserver/src/addie/claude-client.ts- Added retry wrapper for API calls and retry event yielding in streamingserver/src/addie/bolt-app.ts- Handle retry events to update Slack statusserver/src/routes/addie-chat.ts- Send SSE retry events to web clientstests/utils/anthropic-retry.test.ts- Comprehensive tests (24 test cases)Test plan
🤖 Generated with Claude Code