Open-source API key management with built-in rate limiting
Unkey provides a complete API key management infrastructure — create, validate, revoke, and rate-limit API keys in milliseconds. Features include per-key rate limiting, usage analytics, expiration, remaining uses, and RBAC via key metadata. Built for developer tools and SaaS products that need to expose their own APIs with per-customer keys. Sub-5ms global verification via edge network.
Pricing
freemium
150,000 verifications/month, 1,000 keys
Difficulty
low
~10 min setup
Ease score
92 / 100
agent-friendliness
Auth
api key
UNKEY_ROOT_KEY
Completeness
88%
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Two key concepts: UNKEY_ROOT_KEY (your secret for managing keys) vs the keys you issue to customers. Verify a customer's key with unkey.keys.verify({ key, apiId }). The response includes result.valid, result.meta (custom metadata you attached), and result.remaining (for metered keys). Verification is edge-deployed for sub-5ms latency globally.