Use MetisRouter with LangGraph

Copy LangGraph setup for MetisRouter with base URL, API key, model ID, test request, pricing checks, and usage logs.

Last verified: 2026-06-05

Support statusOpenAI-compatible setup supported
Recommended endpoint/v1/chat/completions
Recommended modelsClaude, GPT, Qwen, DeepSeek, Gemini
StreamingAvailable for text routes when the selected tool and model support SSE
Tool callingChoose text models with tool-calling or structured-output signals
Image inputSend images only to models marked for vision or multimodal input
Configuration fields

Base URLhttps://api.metisrouter.com/v1

API keyMETISROUTER_API_KEY

Model IDsCopy exact IDs from /models or /docs/models

Recommended modelanthropic/claude-sonnet-4.5

Best for

Route the tool's model requests through MetisRouter and verify requests, usage, and cost in the console.

Limitations

Do not force unsupported image, video, audio, or embedding models through a text chat endpoint.

Copy-ready example

Copy configuration: paste these values into the tool's OpenAI-compatible or custom provider settings.

Base URL: https://api.metisrouter.com/v1
API key: METISROUTER_API_KEY
Model IDs: Copy exact IDs from /models or /docs/models
Recommended model: anthropic/claude-sonnet-4.5

Test prompt

Send a short request and verify request id, latency, usage, and cost in Usage Logs.

Ask the tool to return a short JSON object with status and model.

Expected response

The test should return short text or JSON and create one Usage Logs entry.

{
  "status": "ok",
  "model": "Copy exact IDs from /models or /docs/models",
  "usage_log": "request id, latency, usage, charged_usd"
}

Usage Logs verification

After the first request, open Usage Logs and confirm request id, model id, endpoint, first-byte latency, total duration, token or asset usage, and charged USD.

  • If no log appears, check API key, base URL, and whether the tool sent the request.
  • If a failed log appears, contact support@metisrouter.com with the request id.
  • For high-volume usage planning, email hello@metisrouter.com.

Review pricing, minimum balance, and request reserve rules

Setup steps

  1. Set the API base URL to https://api.metisrouter.com/v1.
  2. Paste a MetisRouter API key from the console.
  3. Copy the exact model ID from /models or /docs/models.
  4. Send a short test prompt and verify the request in Usage Logs.