63 documents
46 ietf
6 linux-foundation
5 w3c
2 community
25 define a registry
20 mention liveness at all
Standards overlap
Discovery, identity, registries and policy for agents — and how little of it is about verifying that anything is alive.
Well-known paths claimed
| path | specs | which |
|---|---|---|
| /.well-known/agent-card.json | 6 | draft-zhao-a2a-dns-sd, draft-zhao-a2a-webfinger, draft-jakab-dawn-agent-discovery-mdns, draft-narajala-courtney-ansv2, draft-song-anp-ans, a2a-agent-card |
| /.well-known/ai-catalog.json | 5 | draft-mp-agntcy-ads, draft-raskar-agentic-web-federated-resolution, google-ard, lf-ai-catalog, mcp-server-cards |
| /.well-known/http-message-signatures-directory | 3 | draft-meunier-http-message-signatures-directory, draft-ietf-webbotauth-httpsig-protocol, draft-meunier-webbotauth-registry |
| /.well-known/agent.json | 3 | draft-cui-dawn-mdi-model, draft-pro-adp-agent-discovery, draft-nandakumar-agent-sd-jwt |
| /robots.txt | 2 | charter-ietf-aipref, draft-ietf-aipref-attach |
| /.well-known/agent | 2 | draft-nemethi-aid-agent-identity-discovery, draft-nemethi-dawn-aid |
| /.well-known/ad | 2 | draft-jimenez-agent-directory, draft-zhang-dawn-agent-discovery-framework |
| /.well-known/openid-configuration | 2 | draft-drake-agent-identity-registry, draft-nandakumar-agent-sd-jwt |
| /.well-known/signature-agent-card | 1 | draft-meunier-webbotauth-registry |
| /.well-known/ains/ | 1 | draft-vandemeent-ains-discovery |
| /agents.txt | 1 | draft-srijal-agents-policy |
| /.well-known/agents.txt | 1 | draft-car-agents-txt-wellknown |
| /.well-known/agents.json | 1 | draft-car-agents-txt-wellknown |
| /.well-known/ardp/register | 1 | draft-pioli-agent-discovery |
| /.well-known/ardp/deregister | 1 | draft-pioli-agent-discovery |
| /.well-known/ardp/resolve | 1 | draft-pioli-agent-discovery |
| /.well-known/ardp/query | 1 | draft-pioli-agent-discovery |
| /.well-known/ardp/meta | 1 | draft-pioli-agent-discovery |
| /.well-known/ardp/nonce | 1 | draft-pioli-agent-discovery |
| /.well-known/core | 1 | draft-jimenez-t2trg-iot-agent |
| /.well-known/aid-issuer.json | 1 | draft-drake-agent-identity-registry |
| /.well-known/hw-manufacturer-cas.pem | 1 | draft-drake-agent-identity-registry |
| /.well-known/jwks.json | 1 | draft-drake-agent-identity-registry |
| /.well-known/agis/id/ | 1 | draft-ayoub-agis-agent-identity-system |
| /.well-known/agis/agents/{agent}.json | 1 | draft-ayoub-agis-agent-identity-system |
| /.well-known/agis/agents/{agent}/jwks.json | 1 | draft-ayoub-agis-agent-identity-system |
| /.well-known/agis/agents/{agent}/status.json | 1 | draft-ayoub-agis-agent-identity-system |
| /.well-known/proof.json | 1 | draft-raskar-agentic-web-federated-resolution |
| /.well-known/webfinger | 1 | draft-zhao-a2a-webfinger |
| /.well-known/ans/trust-card.json | 1 | draft-narajala-courtney-ansv2 |
| /.well-known/oauth-authorization-server | 1 | draft-singla-agent-identity-protocol |
| /.well-known/oauth-protected-resource | 1 | draft-singla-agent-identity-protocol |
| /.well-known/ard.json | 1 | google-ard |
| /.well-known/mcp-registry-auth | 1 | mcp-registry |
| /.well-known/mcp/server-card.json | 1 | mcp-server-cards |
| /.well-known/mcp.json | 1 | mcp-server-cards |
| /.well-known/agent-registration.json | 1 | erc-8004 |
| /llms.txt | 1 | llms-txt |
| /llms-full.txt | 1 | llms-txt |
| /.well-known/agent-descriptions | 1 | w3c-ai-agent-protocol-cg |
All entries
| id | body / track | status | scope | mechanisms | registry? | liveness? | dates |
|---|---|---|---|---|---|---|---|
| charter-ietf-webbotauth Web Bot Auth (webbotauth) Working Group Charter | ietf wg-charter | active | authentication, identity | http-message-signatures | 2025-09-23 → 2025-10-23 | ||
| charter-ietf-aipref AI Preferences (aipref) Working Group Charter | ietf wg-charter | active | policy | robots-txt-extension | 2024-12-05 → 2025-01-07 | ||
| charter-ietf-dawn Discovery of Agents With Names (DAWN) Working Group Charter (proposed) | ietf wg-charter | active | discovery, naming | dns-txt dns-srv | 2026-08-28 → 2026-09-03 | ||
| draft-meunier-web-bot-auth-architecture HTTP Message Signatures for automated traffic Architecture | ietf individual-draft | replaced | authentication, identity | http-message-signatures jwks | 2025-04-15 → 2026-03-02 expires 2026-09-03 | ||
| draft-meunier-http-message-signatures-directory HTTP Message Signatures Directory | ietf individual-draft | replaced | authentication, identity | well-known-path jwks http-message-signatures | 2025-04-15 → 2026-03-02 expires 2026-09-03 | ||
| draft-ietf-webbotauth-httpsig-protocol HTTP Message Signatures for automated traffic | ietf wg-draft | adopted | authentication, identity | http-message-signatures well-known-path jwks | ✓ | 2026-06-26 → 2026-09-01 expires 2027-03-05 | |
| draft-meunier-webbotauth-registry Registry and Signature Agent card for Web bot auth | ietf individual-draft | active | identity, registry | well-known-path jwks http-message-signatures registry-api | ✓ | 2025-09-05 → 2026-06-26 expires 2026-12-28 | |
| draft-singh-webbotauth-hosted-directories Hosted Key Directories for Web Bot Auth | ietf individual-draft | active | authentication, identity, registry | http-message-signatures jwks well-known-path | ✓ | ✓ | 2026-07-19 → 2026-07-19 expires 2027-01-20 |
| draft-ietf-aipref-vocab A Vocabulary For Expressing AI Usage Preferences | ietf wg-draft | adopted | policy | 2025-05-01 → 2026-08-19 expires 2027-02-20 | |||
| draft-ietf-aipref-attach Associating AI Usage Preferences with Content in HTTP | ietf wg-draft | adopted | policy | robots-txt-extension | 2025-06-16 → 2026-08-19 expires 2027-02-20 | ||
| draft-cui-ai-agent-discovery-invocation AI Agent Discovery and Invocation Protocol | ietf individual-draft | active | discovery, invocation, registry | registry-api did openapi | ✓ | 2025-10-15 → 2026-07-06 expires 2027-01-07 | |
| draft-mozley-aidiscovery AI Agent Discovery (AID) Problem Statement | ietf individual-draft | active | discovery | 2025-10-15 → 2026-04-16 expires 2026-10-18 | |||
| draft-vandemeent-ains-discovery AINS: AInternet Name Service - Agent Discovery and Trust Resolution Protocol | ietf individual-draft | active | discovery, identity, naming, registry | well-known-path registry-api federation did dns-txt | ✓ | ✓ | 2026-03-29 → 2026-03-29 expires 2026-09-30 |
| draft-xu-efficient-agent-discovery-profile Metadata and Query Profile for Efficient Agent Discovery | ietf individual-draft | active | discovery, registry | registry-api semantic-search federation openapi | ✓ | ✓ | 2026-05-18 → 2026-05-18 expires 2026-11-19 |
| draft-nemethi-aid-agent-identity-discovery Agent Identity and Discovery (AID) | ietf individual-draft | active | discovery, identity, naming | dns-txt well-known-path http-message-signatures | 2026-03-16 → 2026-03-16 expires 2026-09-17 | ||
| draft-nemethi-dawn-aid Agent Identity and Discovery (AID) v2 | ietf individual-draft | active | discovery, identity, naming | dns-txt well-known-path http-message-signatures jwks | 2026-09-02 → 2026-09-02 expires 2027-03-06 | ||
| draft-daniel-ai-agent-internet-architecture Architectural Requirements for Supporting AI Agents on the Internet | ietf individual-draft | active | discovery, identity, invocation, authentication | http-message-signatures | ✓ | 2026-08-13 → 2026-08-29 expires 2027-03-02 | |
| draft-srijal-agents-policy AGENTS.TXT: Strict Policy File for Automated Clients | ietf individual-draft | expired | policy | robots-txt-extension | 2025-10-07 → 2025-10-07 expires 2026-04-10 | ||
| draft-car-agents-txt-wellknown AGENTS.TXT: Capability Declarations for Web Agents | ietf individual-draft | active | policy, discovery | well-known-path openapi | 2026-06-12 → 2026-06-12 expires 2026-12-14 | ||
| draft-pioli-agent-discovery Agent Registration and Discovery Protocol (ARDP) | ietf individual-draft | expired | discovery, registry, identity | well-known-path registry-api federation jwks | ✓ | ✓ | 2026-02-03 → 2026-02-24 expires 2026-08-28 |
| draft-mp-agntcy-ads Agent Directory Service | ietf individual-draft | active | discovery, registry | oci-artifact ipfs-dht federation registry-api | ✓ | 2025-10-17 → 2026-07-06 expires 2027-01-07 | |
| draft-jimenez-t2trg-iot-agent Agentic AI Operation of Constrained RESTful Environments | ietf individual-draft | active | discovery, invocation | well-known-path | 2026-04-14 → 2026-07-03 expires 2027-01-04 | ||
| draft-jimenez-agent-directory Agent Directory | ietf individual-draft | active | discovery, registry | well-known-path registry-api dns-srv federation | ✓ | ✓ | 2026-05-07 → 2026-05-08 expires 2026-11-09 |
| draft-jimenez-dawn-discovery-landscape A Survey of AI Agent Discovery Mechanisms | ietf individual-draft | active | discovery | 2026-07-03 → 2026-07-03 expires 2027-01-04 | |||
| draft-akhavain-moussa-dawn-problem-statement Problem Statement for the Discovery of Agents, Workloads, and Named Entities (DAWN) | ietf individual-draft | active | discovery | 2026-04-11 → 2026-07-19 expires 2027-01-20 | |||
| draft-farrel-dawn-terminology Terminology for the Discovery of Agents, Workloads, and Named Entities (DAWN) | ietf individual-draft | active | discovery | 2026-04-15 → 2026-07-26 expires 2027-01-27 | |||
| draft-cui-dawn-mdi-model An Information Model for Minimum Discoverable Information (MDI) | ietf individual-draft | active | discovery | well-known-path | ✓ | 2026-07-03 → 2026-07-03 expires 2027-01-04 | |
| draft-moussa-dawn-gap-analysis Gap Analysis and Applicability Statement for Discovery Protocols of Agents, Workloads, and Named Entities (DAWN) | ietf individual-draft | active | discovery | ✓ | 2026-06-10 → 2026-06-12 expires 2026-12-14 | ||
| draft-seethiraju-dawn-dan DNS-Based Agent Naming (DAN): AIDISCA and AIINDEX Resource Records for AI Agent Discovery | ietf individual-draft | active | discovery, naming | dns-txt | 2026-06-05 → 2026-06-05 expires 2026-12-07 | ||
| draft-pro-adp-agent-discovery Agent Discovery Protocol (ADP) v1.1 -- Well-Known Metadata and Interaction Layer | ietf individual-draft | active | discovery, identity, invocation | well-known-path dns-srv dns-txt json-ld registry-api | ✓ | 2026-06-09 → 2026-06-23 expires 2026-12-25 | |
| draft-chandra-agent-registry-corroboration Multi-Source Corroboration for AI Agent Discovery | ietf individual-draft | active | registry, conformance, discovery | registry-api did | ✓ | 2026-07-05 → 2026-08-28 expires 2027-03-01 | |
| draft-drake-agent-identity-registry Agent Identity Registry System: A Federated Architecture for Hardware-Anchored Identity of Autonomous Entities | ietf individual-draft | active | identity, registry, naming | well-known-path jwks federation verifiable-credentials dns-srv http-message-signatures | ✓ | 2026-04-11 → 2026-05-22 expires 2026-11-23 | |
| draft-ayoub-agis-agent-identity-system AgIS: An Agent Identity System for DNS-Backed Verification of AI and Software Agents | ietf individual-draft | active | identity, authentication, discovery | dns-txt well-known-path jwks http-message-signatures | ✓ | 2026-06-29 → 2026-06-29 expires 2026-12-31 | |
| draft-raskar-agentic-web-federated-resolution Registry-Assisted Discovery for AI Agents and Workloads Without DNS Discovery Anchors | ietf individual-draft | active | discovery, registry, identity | registry-api federation well-known-path did dns-txt | ✓ | ✓ | 2026-07-19 → 2026-07-20 expires 2027-01-21 |
| draft-zhao-a2a-dns-sd DNS-Based Service Discovery for Agent2Agent (A2A) Protocol Agents | ietf individual-draft | active | discovery | dns-srv dns-txt well-known-path | 2026-08-19 → 2026-08-19 expires 2027-02-20 | ||
| draft-zhao-a2a-webfinger A WebFinger Profile for Agent2Agent (A2A) Agent Identity Resolution | ietf individual-draft | active | discovery, naming, identity | well-known-path federation | 2026-08-19 → 2026-08-19 expires 2027-02-20 | ||
| draft-jakab-dawn-agent-discovery-mdns Zero-Configuration Agent Discovery | ietf individual-draft | active | discovery | dns-srv dns-txt well-known-path | 2026-07-06 → 2026-07-06 expires 2027-01-07 | ||
| draft-yao-dawn-agent-discovery-architect DNS-like Agent Discovery Architecture | ietf individual-draft | active | discovery, naming, registry | registry-api federation dns-srv | ✓ | 2026-07-06 → 2026-07-06 expires 2027-01-07 | |
| draft-zhang-dawn-agent-discovery-framework A Framework for Agent Discovery in DAWN | ietf individual-draft | active | discovery, registry | federation well-known-path dns-srv registry-api | ✓ | ✓ | 2026-09-05 → 2026-09-05 expires 2027-03-09 |
| draft-nandakumar-agent-sd-jwt SD Agent: Selective Disclosure for Agent Discovery and Identity Management | ietf individual-draft | expired | discovery, identity, registry | well-known-path verifiable-credentials registry-api federation | ✓ | 2025-07-29 → 2026-03-02 expires 2026-09-03 | |
| draft-narajala-ans Agent Name Service (ANS): A Universal Directory for Secure AI Agent Discovery and Interoperability | ietf individual-draft | replaced | naming, discovery, identity, registry | registry-api federation | ✓ | 2025-05-16 → 2025-05-16 expires 2025-11-17 | |
| draft-narajala-courtney-ansv2 Agent Name Service v2 (ANS): A Domain-Anchored Trust Layer for Autonomous AI Agent Identity | ietf individual-draft | active | naming, identity, discovery, registry, authentication | dns-txt well-known-path registry-api federation did openapi | ✓ | ✓ | 2026-04-13 → 2026-04-13 expires 2026-10-15 |
| draft-dimare-ans-protocol-registry An IANA Registry for Agent Name Service (ANS) Protocol Identifiers | ietf individual-draft | active | naming, registry | dns-txt | 2026-07-25 → 2026-07-25 expires 2027-01-26 | ||
| draft-song-anp-ans Agent Name System (ANS) for the Agent Network Protocol (ANP) | ietf individual-draft | active | naming, discovery, registry | ipfs-dht dns-srv dns-txt registry-api well-known-path | ✓ | ✓ | 2026-03-25 → 2026-03-25 expires 2026-09-26 |
| draft-schemacommons-areg Agent Registry (AREG) | ietf individual-draft | active | registry, discovery, conformance | registry-api jwks | ✓ | 2026-08-02 → 2026-08-02 expires 2027-02-03 | |
| draft-singla-agent-identity-protocol Agent Identity Protocol (AIP): Decentralized Identity and Delegation for AI Agents | ietf individual-draft | active | identity, authentication, registry | did registry-api jwks federation well-known-path | ✓ | ✓ | 2026-04-16 → 2026-06-10 expires 2026-12-12 |
| a2a-agent-card Agent2Agent (A2A) Protocol Specification — Agent Card and Agent Discovery | linux-foundation spec | published | discovery, invocation, identity | well-known-path jwks openapi | 2025-04-09 → 2026-05-28 | ||
| google-ard Agentic Resource Discovery (ARD) Specification | google spec | active | discovery, registry | well-known-path registry-api semantic-search federation json-ld ipfs-dht | ✓ | 2026-06-17 → 2026-08-26 | |
| lf-ai-catalog AI Catalog (Common AI Catalog and Registry Standard) | linux-foundation spec | active | discovery, registry | well-known-path | 2025-10-29 → | ||
| agntcy-oasf Open Agentic Schema Framework (OASF) | linux-foundation spec | published | discovery | oci-artifact | 2025-02-10 → 2026-07-10 | ||
| agntcy-agent-directory AGNTCY Agent Directory Service (dir) | linux-foundation spec | published | discovery, registry | oci-artifact ipfs-dht federation registry-api | ✓ | 2025-02-10 → 2026-08-18 | |
| mcp-registry MCP Registry and server.json schema | linux-foundation spec | published | registry, discovery | registry-api dns-txt well-known-path | ✓ | 2025-09-08 → 2026-08-06 | |
| mcp-server-cards SEP-2127: MCP Server Cards - HTTP Server Discovery | linux-foundation spec | active | discovery | well-known-path | 2026-01-21 → 2026-09-06 | ||
| nanda-agentfacts NANDA Index and Verified AgentFacts (Beyond DNS: Unlocking the Internet of AI Agents) | mit spec | active | discovery, identity, registry, naming | json-ld verifiable-credentials did registry-api federation | ✓ | ✓ | 2025-06-08 → 2025-07-18 |
| erc-8004 ERC-8004: Trustless Agents | ethereum eip | active | identity, registry, discovery, conformance | onchain well-known-path did | ✓ | ✓ | 2025-08-13 → |
| llms-txt The /llms.txt file | community spec | active | policy, discovery | well-known-path | 2024-09-03 → 2026-08-10 | ||
| owasp-ans Agent Name Service (ANS) for Secure AI Agent Discovery v1.0 | owasp spec | published | naming, discovery, identity, registry | registry-api openapi | ✓ | 2025-05-14 → 2025-05-14 | |
| iab-techlab-ai-bot-management-guidance IAB Tech Lab Guidance on AI System Bot and Crawler Management Strategies (public comment draft) | community spec | active | policy | robots-txt-extension | 2026-05-27 → 2026-05-27 | ||
| w3c-agent-identity-registry-protocol-cg Agent Identity Registry Protocol Community Group | w3c cg-charter | active | identity, registry, authentication | did verifiable-credentials registry-api | ✓ | 2026-04-24 → | |
| w3c-semantic-agent-communication-cg Semantic Agent Communication Community Group | w3c cg-charter | active | identity, conformance, invocation | json-ld did verifiable-credentials | 2025-11-13 → | ||
| w3c-agent-conformance-benchmarking-cg Agent Conformance and Benchmarking Community Group (proposed) | w3c cg-charter | active | conformance | ✓ | 2026-08-25 → | ||
| w3c-ai-agent-memory-interop-cg AI Agent Memory Interoperability Community Group | w3c cg-charter | active | conformance, identity | 2026-05-18 → 2026-06-19 | |||
| w3c-ai-agent-protocol-cg AI Agent Protocol Community Group (Agent Network Protocol) | w3c cg-report | active | discovery, identity, invocation | did json-ld well-known-path | 2025-05-08 → 2025-08-19 |