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Transaction token (Txn-Token)

By Updated

A short-lived, signed token, specified in an IETF OAuth working group draft, that carries user identity, workload identity and authorisation context through a call chain within one trusted domain, so downstream services can decide on protected context 1. Still a draft (revision 11, 30 Jul 2026) as of 2026-09-24.

Developed in
ch. 23, Accountability across hops
Chapters
ch. 23, AI Agents
Contrast with
Delegation (OAuth token exchange)
Source
1 numbered reference, listed below

Where it is used

One chapter of the Body of Knowledge uses the term. Each link opens the first section that does.

  • Delegation chain

    The sequence of agents a task passes through from the person or system that started it.

  • Workload identity

    The attributable identity a workload such as an agent carries across every hop, under which its actions are logged and its access is revoked, typically a…

Sources

  1. [1] draft-ietf-oauth-transaction-tokens-11, Transaction Tokens (Internet-Draft, OAuth working group, revision 11 of 30 Jul 2026, WG state "Waiting for Write-Up"; short-lived signed tokens that propagate user identity, workload identity and authorisation context through a call chain within a trusted domain). IETF. 2026-07-30. https://datatracker.ietf.org/doc/draft-ietf-oauth-transaction-tokens/ (verified: primary)

Definitions of legal terms paraphrase the cited text, which governs. Dated statements are as of .

Cite this term

García Aibar, J. (2026). Transaction token (Txn-Token). In AI Governance Engineering: The Thesis & Body of Knowledge (v0.5.0), Glossary. https://doi.org/10.5281/zenodo.22956197. https://aigovernanceengineer.com/glossary/transaction-token-txn-token. CC BY 4.0

BibTeX

@misc{aige2026transactiontokentxntoken,
  author  = {Jorge García Aibar},
  title   = {{Transaction token (Txn-Token)}},
  note    = {Glossary, AI Governance Engineering: The Thesis \& Body of Knowledge, version 0.5.0},
  year    = {2026},
  doi     = {10.5281/zenodo.22956197},
  url     = {https://aigovernanceengineer.com/glossary/transaction-token-txn-token}
}