Unkey
Identity
API key issuance, per-key rate limits, and usage analytics for machine-to-machine access
MCPOpenAPIllms.txt
API keypay-per-request
A directory of services AI agents can actually use — APIs, tools and merchants with machine-readable interfaces and agent payment protocols. Badges are probe-backed, never self-asserted.
Identity·M2M auth, agent identity, e-signature
Identity
Signature requests, templates, and webhooks over a REST API with a free test mode
Same query as JSON: /api/v1/services?category=identify&auth_method=api-key
