Rekey.dev

Rekey provides a comprehensive platform for managing both user authentication and agent product billing, all accessible through a single, self-hostable API. Key capabilities include: * OAuth 2.1 server with discovery and dynamic client registration * Credit and quota management for agent consumption * Integrations with major payment gateways like Stripe, PayPal, and Razorpay * Usage tracking to prevent overspending and ensure billing limits * Unified user records for authentication and billing This platform addresses the common challenges faced when developing agent-based products, such as tracking agent-spent resources (tokens, tool calls, third-party credits) against user subscriptions and providing a robust authorization server for MCP clients. Rekey ensures that consumption stops when limits are reached, preventing unexpected charges and maintaining financial control. Rekey eliminates the complexity of building and maintaining separate authentication and billing systems. It unifies user data, preventing discrepancies that often arise from out-of-order webhooks and simplifying reconciliation. The open-source, MIT-licensed nature allows for full control and data ownership, as your Postgres database remains entirely yours. Ideal for developers and engineering teams building agent products who need a reliable, self-hosted solution for managing user access, consumption tracking, and integrated billing without the overhead of disparate systems. It’s designed to be a foundational component for products where agents sign users in and manage their balances.