Module ext 

Public extension contracts (request signing, token leasing, rate limiting).

The MVP crate intentionally exposes traits without concrete implementations so downstream services can bring their own HTTP client, token cache, and rate budgeting strategy. Future tasks will implement opinionated adapters in separate crates without expanding the surface of oauth2-broker itself.

Re-exports

pub use rate_limit::*;

pub use request_signer::*;

pub use token_lease::*;

Modules

rate_limit

Rate limit policy contracts for flows that need to consult provider budgets before issuing token requests.

request_signer

Request signing contracts that let downstream crates attach broker-issued tokens to arbitrary HTTP clients.

token_lease

Token leasing contracts that let callers borrow access tokens for short windows while the broker controls refresh lifetimes.