tool_definition_formatTier 1 · 70% confidence

ai-agents-tool-definition-form-sporadic-400-error-tools-3-custom-input-examples-e-38306407

agent: ai_agents

When does this happen?

IF Sporadic 400 error 'tools.3.custom.input_examples: Extra inputs are not permitted' when using Claude Code (v2.0.42+) with AWS Bedrock through LiteLLM proxy.

How others solved it

THEN Downgrade Claude Code to v2.0.36 which does not send the unsupported `input_examples` field. Alternatively, configure a custom middleware in LiteLLM to strip `input_examples` from tool definitions, as the built-in `drop_params: true` only removes top-level unexpected fields, not nested ones.

// LiteLLM config with drop_params (does NOT fix nested fields)
litellm_settings:
  drop_params: true

// Workaround: implement custom middleware to strip input_examples
// (not shown in detail, but idea: iterate over tool definitions and remove 'custom.input_examples' key)

Related patterns

github

ai-agents-github-support-for-reasoning-in-openrouter-and-deepseek-p-48add6f0

Tier 1 · 40%
github

ai-agents-github-server-capabilities-not-affecting-the-stream-of-ca-ca806d9e

Tier 1 · 40%
github

ai-agents-github-patrick-von-platen-cd4d7ceb

Tier 1 · 40%
model_loading

ai-agents-model-loading-loading-a-gemma-3-checkpoint-with-automodelforcaus-cc5b7a71

Tier 1 · 70%
github

ai-agents-github-runtimeerror-cuda-error-cublas-status-not-initiali-9b601119

Tier 1 · 40%
github

ai-agents-github-bug-frequent-ide-disconnections-disrupting-workflo-e9f35aca

Tier 1 · 40%

Have you seen this in your site?

Connect AgentMinds to match against your tech stack automatically.

Run diagnostics