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Fix custom headers (e.g. Cloudflare AI Gateway auth) being dropped during Anthropic SDK tool-use loop Includes evidence for Anthropic API troubleshooting demand.
toolRunner drops defaultHeaders on follow-up requests (breaks proxy/gateway setups) Fix Anthropic beta.skills.create Cloudflare gateway errors Includes evidence for Anthropic API troubleshooting demand.
Cloudflare 520 / 502 on beta.skills.create endpoint Fix Anthropic Python SDK not handling Bedrock streaming SSE error events gracefully Includes evidence for Anthropic API troubleshooting demand.
Bedrock SSE stream internalServerException — unexpected error during processing Fix AttributeError when Anthropic Bedrock streaming returns error SSE event as first event Includes evidence for Anthropic API troubleshooting demand.
AttributeError: 'NoneType' object has no attribute 'model' on streaming error SSE event Fix Anthropic SDK returning 200 status code for mid-stream streaming errors Includes evidence for Anthropic API troubleshooting demand.
Mid-stream SSE errors get status_code=200 instead of the actual error code Fix zodOutputFormat compatibility error with zod3 in Anthropic SDK Includes evidence for Anthropic API troubleshooting demand.
zodOutputFormat throws when called with zod3 schema Fix Amazon Bedrock error when using Anthropic Claude models with on-demand throughput Includes evidence for Anthropic API troubleshooting demand.
anthropic.claude-3-haiku-20240307-v1:0 with on-demand throughput isn't supported Fix Anthropic API 400 error when injected MCP server is unreachable Includes evidence for Anthropic API troubleshooting demand.
400 Connection error while communicating with MCP server Fix Anthropic API streaming responses being interrupted mid-transmission without message_stop event Includes evidence for Anthropic API troubleshooting demand.
Streaming response interrupted - connection closes without message_stop event Fix Anthropic API 500 Internal Server Error when using strict: true with complex nested tool schemas Includes evidence for Anthropic API troubleshooting demand.
500 Internal Server Error Fix claude.ai MCP connector showing 'Authorization with the MCP server failed' after OAuth completes successfully Includes evidence for Anthropic API troubleshooting demand.
Authorization with the MCP server failed Fix Anthropic API 529 overloaded responses with safe retry backoff, lower concurrency, and provider-capacity checks.
Anthropic API 529 Overloaded