Authentication - MaxAPI Developer

MaxAPI authenticates requests with API keys. Most endpoints expect a Bearer token in the Authorization header:

Authorization: Bearer YOUR_API_KEY

curl https://api.maxapi.ai/v1/chat/completions \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"YOUR_MODEL_ID","messages":[{"role":"user","content":"Hello"}]}'

Some provider-native endpoints use a different authentication format. Follow the header definition on the endpoint page.

Protect your keys

Store API keys in server-side environment variables or a secrets manager.
Do not include keys in frontend code, mobile applications, or public repositories.
Create separate keys for each application and environment.
Revoke and replace a key immediately if you suspect exposure.

export MAXAPI_API_KEY="YOUR_API_KEY"

Authentication errors

Status	Cause	Resolution
`401`	The API key is missing, invalid, or revoked	Check the request header and use an active key
`403`	The key cannot access the requested model or endpoint	Check the account and model permissions