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Fix intermittent 404 Not Found errors on Anthropic Batch API retrieve and results calls Includes evidence for Anthropic API troubleshooting demand.
NotFoundError (404) on Batch API Fix AttributeError NoneType has no attribute model during Anthropic Bedrock streaming requests Includes evidence for Anthropic Python SDK troubleshooting demand.
AttributeError: 'NoneType' object has no attribute 'model' Fix RemoteProtocolError peer closed connection during Anthropic streaming with code_execution and skills Includes evidence for Anthropic Python SDK troubleshooting demand.
httpx.RemoteProtocolError: peer closed connection without sending complete message body (incomplete chunked read) Fix 404 error when calling Anthropic count_tokens endpoint, or resolve unexpected rate limiting caused by SDK fallback behavior Includes evidence for Anthropic API troubleshooting demand.
404 Not Found — POST /v1/messages/count_tokens Fix Anthropic TypeScript SDK ignoring async apiKey function for dynamic key rotation Includes evidence for Anthropic API troubleshooting demand.
Anthropic SDK TypeScript: async apiKey function silently discarded — all requests sent without X-Api-Key header → 401 errors Fix Anthropic SDK stripping file paths during multipart upload for skills API Includes evidence for Anthropic API troubleshooting demand.
Anthropic SDK strips directory paths from filenames in multipart uploads — my-skill/SKILL.md becomes SKILL.md, breaking skills.versions.create() Fix Claude Opus 4.6 / Sonnet 4.6 not making parallel tool calls in Message Batches API Includes evidence for Anthropic API troubleshooting demand.
Claude Opus 4.6 / Sonnet 4.6 only calls 1 tool in Batch API with 46 tools, while Opus 4.5 correctly calls 39+ tools in parallel Fix Anthropic API 400 error when using service_tier through Portkey gateway Includes evidence for Anthropic API troubleshooting demand.
Claude API 400 Bad Request — service_tier rewritten to deprecated 'speed' field Fix Anthropic API streaming responses that end abruptly without message_stop event when using tool_use with large JSON payloads Includes evidence for Anthropic API troubleshooting demand.
Streaming responses interrupted mid-transmission — connection closes without message_stop event Fix Anthropic SDK stripping directory paths from filenames during multipart file uploads, causing 400 errors with skills.versions.create() Includes evidence for Anthropic API troubleshooting demand.
400 invalid_request_error — skills.versions.create() requires SKILL.md inside top-level directory 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