Crumb

Hand out temporary AI API keys — without handing over your real one.

Connect your own OpenAI API key, then issue ck_ keys with hard limits: spend caps, token caps, request caps, rate limits, model allowlists, and expiry dates. Recipients drop them into any OpenAI-compatible tool. You see usage per key; they never see your key.

Built for temporary access

Hackathons & events — give every team a capped key that expires when the event ends.
Classes & workshops — students get rate-limited keys; you get per-student usage.
Demos, scripts & agents — short-lived keys for trials and coding agents.

How it works

Sign in and connect your OpenAI API key. It is encrypted at rest and never exposed to recipients.
Create keys with the limits you want — individually or in pools with shared budgets.
Recipients point their tool at the OpenAI-compatible endpoint:
```
OPENAI_API_KEY=ck_...
OPENAI_BASE_URL=https://api.getcrumb.dev/v1
```
Works with Codex CLI, OpenCode, and anything else that speaks the OpenAI API, including streaming.

Revoke or rotate any key instantly. Limits are enforced before a request ever reaches OpenAI.

Private beta

Crumb is in private beta. Want access? Email hello@getcrumb.dev.