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Documentation Index

Fetch the complete documentation index at: https://apixo.ai/docs/llms.txt

Use this file to discover all available pages before exploring further.

LLM Gateway requests use your APIXO API key. The header name follows the compatible provider API so existing SDKs and tools can keep their normal request format. Create a key in the APIXO dashboard, then store it as APIXO_API_KEY. 
export APIXO_API_KEY="your_apixo_api_key"

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Header by API format

Compatible APIHeader
Claude APIx-api-key: $APIXO_API_KEY
OpenAI Responses APIAuthorization: Bearer $APIXO_API_KEY
Gemini APIx-goog-api-key: $APIXO_API_KEY

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Claude required version header

Claude-compatible requests also require the Anthropic protocol version header. Most Claude SDKs add this automatically. 
anthropic-version: 2023-06-01

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Example

curl -X POST "https://llm.apixo.ai/v1/messages" \
  -H "x-api-key: $APIXO_API_KEY" \
  -H "anthropic-version: 2023-06-01" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "claude-sonnet-4-6",
    "max_tokens": 128,
    "messages": [{"role": "user", "content": "Say hello."}]
  }'
Do not expose APIXO keys in browser-side code. Make LLM Gateway calls from your backend, serverless function, or trusted runtime.