July 22, 2025 - Bug Description I am getting this error on a daily basis. It looks a whole lot like I am paying $200 dollars a month for you all not to upgrade your server stacks. ⎿ API Error (529 {"type&quot...

500 - api_error: An unexpected error has occurred internal to Anthropic's systems. 529 - overloaded_error: The API is temporarily overloaded.

February 28, 2025 - Thank you ​ ... You're right—this isn't a Zapier issue directly. The 529 Overloaded Error from Claude AI means that Anthropic's servers are under heavy load and rejecting or delaying requests.

June 7, 2025 - 2025-07-07 22:18:07.922 | ERROR | pipecat.services.anthropic.llm:_process_context:293 - AnthropicLLMService#1 exception: {'type': 'error', 'error': {'details': None, 'type': 'overloaded_error', 'message': 'Overloaded'}}

Implement Rate Limiting: Limit the number of requests sent to the API within a specific timeframe to avoid contributing to the overload. Optimize Request Payloads: Ensure that requests are as lightweight as possible to reduce server load. Monitor API Usage: Use monitoring tools to track API usage patterns and identify peak times to better manage your requests. Check Server Status: Verify the server status on Anthropic's status page to see if there are any ongoing issues or maintenance.

A step-by-step guide to detecting Anthropic’s streamed `overloaded_error` and building a resilient, automatic fallback to another model using Portkey.

November 4, 2025 - Tool definitions overload the context window; Intermediate tool results consume additional tokens. Most MCP clients load all tool definitions upfront directly into context, exposing them to the model using a direct tool-calling syntax.

October 3, 2025 - The 'Overloaded' error occurs when Anthropic/Claude's servers are experiencing high traffic and are temporarily overloaded.

June 6, 2025 - Hello, we get Anthropic Overloaded errors: {“type”:“error”,“error”:{“details”:null,“type”:“overloaded_error”,“message”:“Overloaded”} } very often, but we don’t see ANY rate limit hits in Anthropic console. It happens when just a few people are using the app, ...

platform.claude.com (formerly console.anthropic.com) Operational · 90 days ago · 99.77 % uptime · Today · Claude API (api.anthropic.com) Operational · 90 days ago · 99.78 % uptime · Today · Claude Code Operational · 90 days ago · 99.76 % uptime · Today · Operational ·

500 - api_error: An unexpected error has occurred internal to Anthropic’s systems. 529 - overloaded_error: The API is temporarily overloaded.

April 30, 2024 - I've been encountering a recurring issue with aider when executing complex queries that utilize Anthropic Opus. It appears that these queries are overloading the API, which results in exceptions being thrown and the termination of the program.

July 16, 2025 - Bug Description ⎿ API Error (529 {"type":"error","error":{"type":"overloaded_error","message":"Overloaded"}}) · Retrying in 1 seconds… (attempt 1/10) ⎿ API Error (529 {"type":"error","error":{"type":"overloaded_error","message":"Overloaded"}}) · Retrying in 1 seconds…

July 15, 2025 - Bug Description ⎿ API Error (529 {"type":"error","error":{"type":"overloaded_error","message":"Overloaded"}}) · Retrying in 1 seconds… (attempt 1/10) ⎿ API Error (529 {"type":"error","error":{"type":"overloaded_error","message":"Overloaded"}}) · Retrying in 1 seconds…

OpenRouter is seeing some downtime from Anthropic as a provider.

August 22, 2024 - anthropic.APIStatusError: {'type': 'error', 'error': {'details': None, 'type': 'overloaded_error', 'message': 'Overloaded'}} Any thoughts on dealing with this, e.g., I create the max_retries or add a time out.

May 25, 2025 - There was an error while loading. Please reload this page · Bug Description there is no response and I have Error "API Error (529 {"type":"error","error":{"type":"overloaded_error","message":"Overloaded"}}) · Retrying in 8 seconds… (attempt 5/10) ⎿ API Error (529 {"type":"error","err...