What happened
On 12 October 2026 (datatracker 'Last updated 2026-10-12'), the individual Internet-Draft 'Agentic Reasoning Protocol (ARP): DNS-Bound Signatures for Entity Self-Descriptions' was updated to revision -01. Version 1.3 ('Reader Profile') specifies a JSON manifest served at a well-known location with an optional Ed25519 signature bound to the domain via a public key in a DNS TXT record, adding a required provenance statement, wording profile (third-person statements), Markdown representation bound by SHA-256, a discovery profile and key revocation via an empty DNS key value. The signature proves the domain operator published the exact file unaltered (not that its statements are true).
Why it matters
As agent-to-agent interactions and agent marketplaces grow, claims about an agent's identity/capabilities need domain-anchored, tamper-evident attestation. ARP v1.3 is a lightweight contribution to the emerging IETF/IETF-adjacent agent-authentication and trust landscape, giving implementers an option for verifiable entity self-descriptions without heavy PKI.
Action needed
Teams building agent registries, agent marketplaces or AI supply-chain attestation should assess ARP v1.3 as a candidate mechanism for domain-verifiable agent self-descriptions and track its continued development.