Transaction Tokens (Txn-Tokens)

An IETF OAuth working group Standards Track draft defining short-lived, signed JWTs that carry user identity, workload identity and authorization context through an internal call chain inside a single trust domain. A Transaction Token is minted at the edge from the incoming access token and passed service-to-service, so each downstream hop can make an authorization decision against the original requester and intent rather than trusting whoever called it. Uses the JWT typ value txntoken+jwt and defines the txn, tctx, rctx, req_wl and scope claims.