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API Keys

Your prx- key authenticates every request and draws down your credit balance. Keys on the same account share its AI balance and any active plan allowance.

Create a key​

  1. Open Primex API Keys.
  2. Create a key. It will look like prx-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx.
  3. Copy it once and store it somewhere safe.

You can also create and manage keys under My AI → API keys in the Telegram Mini App.

Expiration and spend caps​

Set an optional expiration date and monthly USD spend cap when creating a key, or update those controls from its details. Expired keys cannot authenticate. Spend caps use the UTC calendar month. Billing happens after successful work, so an already-admitted request can finish above the cap. See Errors & Limits.

Use a key​

Provide it as a header on every request. Either style works:

Authorization: Bearer prx-YOUR_KEY
# or
x-api-key: prx-YOUR_KEY

Most SDKs read it from an environment variable:

export OPENAI_API_KEY=prx-YOUR_KEY       # OpenAI SDK / Cursor / Codex
export ANTHROPIC_API_KEY=prx-YOUR_KEY    # Anthropic SDK / Claude Code

Rotate or revoke​

If a key is exposed, revoke it from API Keys and create a new one. Revoked keys stop working immediately; in-flight requests already authorized may complete.

Best practices​

  • One key per environment (local, CI, production) so you can revoke narrowly.
  • Never embed a key in a browser, mobile app, or public repo.
  • Watch your usage in Usage.