[Bug] Anthropic API Error: Request exceeds maximum size causes infinite loop

Resolved 💬 5 comments Opened Dec 9, 2025 by ChrisGVE Closed Feb 20, 2026

Bug Description
I am getting API Error: 413 {"error":{"type":"request_too_large","message":"Request exceeds the maximum size"}} and Claude Code is stuck in an endless loop, each time I try to nudge it, it attemps to do the same thing and gets the API error, and
then stop.

Environment Info

  • Platform: darwin
  • Terminal: WezTerm
  • Version: 2.0.62
  • Feedback ID:

Errors

[{"error":"Error: Tool mcp__task-master__set_task_status not found\n    at n29 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2841:5952)\n    at A2 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:21820)\n    at J9 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:38061)\n    at pP (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:49007)\n    at PR (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:85342)\n    at is (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:84348)\n    at ls (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:84174)\n    at Km (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:80666)\n    at k0 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:8914)\n    at uA (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:7651)","timestamp":"2025-12-09T19:39:51.068Z"},{"error":"Error: Tool mcp__task-master__next_task not found\n    at n29 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2841:5952)\n    at A2 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:21820)\n    at J9 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:38061)\n    at pP (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:49007)\n    at PR (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:85342)\n    at is (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:84348)\n    at ls (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:84174)\n    at Km (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:80666)\n    at k0 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:8914)\n    at uA (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:7651)","timestamp":"2025-12-09T19:39:51.070Z"},{"error":"Error: Tool mcp__task-master__set_task_status not found\n    at n29 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2841:5952)\n    at A2 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:21820)\n    at J9 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:38061)\n    at pP (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:49007)\n    at PR (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:85342)\n    at is (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:84348)\n    at ls (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:84174)\n    at Km (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:80666)\n    at k0 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:8914)\n    at uA (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:7651)","timestamp":"2025-12-09T19:39:51.072Z"},{"error":"Error: Tool mcp__task-master__set_task_status not found\n    at n29 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:2841:5952)\n    at A2 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:21820)\n    at J9 (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:38061)\n    at pP (file:///Users/chris/dev/ai/claude-code-cfg/claude/local/node_modules/@anthropic-ai/claude-code/cli.js:739:49007)

Note: Error logs were truncated.

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