Getting started

Authentication

Merius authenticates every request with an API key sent as a bearer token in the Authorization header. The same header works for every endpoint.

Create an API key #

Sign in to the Merius dashboard, open API keys, and create a key. Copy it when it is shown: we store only a hash, so the full key is visible exactly once. Keys are prefixed sk-merius- so they are easy to spot in logs and secret scanners.

Treat a key like a password. Anyone who has it can spend against your account until the key is deleted.

Authenticate a request #

Send the key as a bearer token. This single header authorizes calls to every endpoint — chat completions, models, everything:

Authorization header

curl https://api.merius.ai/v1/models \
  -H "Authorization: Bearer $MERIUS_API_KEY"

Keep keys out of source #

Read the key from an environment variable instead of hard-coding it. Set it once in your shell or your deployment’s secret store, and reference it everywhere:

Set the key as an environment variable

export MERIUS_API_KEY="sk-merius-xxxxxxxxxxxxxxxxxxxxxxxx"

Never commit a key, embed it in client-side code, or ship it in a mobile app. See Security for rotation and per-environment keys.