cURL

Claude API with cURL — direct HTTP requests to Claude models. Copy-paste examples for quick API testing.

Which Format Should I Use?

Use Anthropic Messages API if you want the native Claude request format and native streaming event structure.
Use OpenAI-compatible Chat Completions if you are debugging an OpenAI-style client or mirroring an existing OpenAI integration.
The key difference is both the endpoint and the auth header format, so copy the right example for the client you are testing.

cURL is the fastest way to verify whether a setup issue is caused by your SDK wrapper or by the raw API request itself.

Anthropic Messages API

Basic requestbash

curl https://api2.claudestore.store/v1/messages \
  -H "x-api-key: YOUR_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-sonnet-4.6",
    "max_tokens": 1024,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Streamingbash

curl https://api2.claudestore.store/v1/messages \
  -H "x-api-key: YOUR_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "content-type: application/json" \
  --no-buffer \
  -d '{
    "model": "claude-sonnet-4.6",
    "max_tokens": 1024,
    "stream": true,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

OpenAI-Compatible

Chat completionsbash

curl https://api2.claudestore.store/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "content-type: application/json" \
  -d '{
    "model": "claude-sonnet-4.6",
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Streamingbash

curl https://api2.claudestore.store/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "content-type: application/json" \
  --no-buffer \
  -d '{
    "model": "claude-sonnet-4.6",
    "stream": true,
    "messages": [{"role": "user", "content": "Hello!"}]
  }'

Utility Endpoints

List modelsbash

curl https://api2.claudestore.store/v1/models \
  -H "x-api-key: YOUR_API_KEY"

Detailed model infobash

curl https://api2.claudestore.store/v1/models/info \
  -H "x-api-key: YOUR_API_KEY"

Health checkbash

curl https://api2.claudestore.store/health

Common Mistakes

Using Authorization: Bearer with the native Messages API example. The native route expects x-api-key.
Using x-api-key with the OpenAI-compatible example. That route should use Authorization: Bearer YOUR_API_KEY.
Forgetting --no-buffer while testing streaming, then assuming the stream is broken.

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