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All Muxx APIs require authentication using your API key.

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API Keys

API keys look like: 
muxx_sk_live_xxxxxxxxxxxxxxxxxxxx  # Production
muxx_sk_test_xxxxxxxxxxxxxxxxxxxx  # Testing
Get your API key from the dashboard under Project Settings → API Keys.

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Gateway Authentication

For gateway requests, use the X-Muxx-Api-Key header: 
curl https://gateway.muxx.dev/v1/chat/completions \
  -H "Content-Type: application/json" \
  -H "X-Muxx-Api-Key: muxx_sk_live_xxxxxxxxxxxx" \
  -d '{
    "model": "gpt-4o",
    "messages": [{"role": "user", "content": "Hello"}]
  }'

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Management API Authentication

For management API requests, use Bearer token authentication: 
curl https://api.muxx.dev/v1/logs \
  -H "Authorization: Bearer muxx_sk_live_xxxxxxxxxxxx"

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SDK Authentication

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Environment Variable

export MUXX_API_KEY="muxx_sk_live_xxxxxxxxxxxx"

from muxx import Muxx

muxx = Muxx()  # Reads MUXX_API_KEY automatically

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Direct Initialization

from muxx import Muxx

muxx = Muxx(api_key="muxx_sk_live_xxxxxxxxxxxx")

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Security Best Practices

Never commit API keys to version control or expose them in client-side code.
  • Store keys in environment variables
  • Use secret management tools in production
  • Rotate keys periodically
  • Use test keys for development