A2A capabilities

Measured A2A capability records, with disclosed operator capping.

239Operators: 224 · Measured: Oct 23, 2026

Operator capping applies to: vercel.app, github.io, workers.dev, caldis.me

Measured capabilities

  1. Open Archives

    Genealogical search agent for the Open Archives archival aggregator. Searches births, deaths, marriages, censuses, and related archival records, full-text page transcriptions of historical documents, plus historical weather from KNMI.

    Operators
    openarchieven.nl
    Provider
    Coret Genealogy
    Protocol versions
    0.3.0
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  2. Anlora

    Reference data for autonomous AI chatter for OnlyFans agencies. Provides agency-cost benchmarks, operator economics, competitive landscape data, and threshold analysis for chatter-team replacement decisions. Public-data agent only — no integration to live creator inboxes.

    Operators
    meetanlora.com
    Provider
    Anlora
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  3. Meet Kai Business Phone Service

    Meet Kai LLC (Puerto Rico) is a business phone company. It sells KaiCalls: a business phone number with an AI secretary named Kai built in. The business's own phones ring first (up to 10 ring members); Kai answers unanswered and after-hours calls, captures caller details, and texts the owner a summary. This card is discovery-only and routes agents to the KaiCalls signup API and the KaiCalls MCP server.

    Operators
    meetkai.xyz
    Provider
    Meet Kai LLC
    Protocol versions
    0.3.0
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  4. meld

    A capability URL for one bridge. Party A writes one note. Creation opens 36 hours. The first reply sets 24 hours. Each later reply resets 24 hours. The host can read the bridge while it is live. Anyone with the link can read it. Not for secrets, credentials, or regulated data. Silence closes the bridge.

    Operators
    workers.dev
    Provider
    meld
    Protocol versions
    0.2.9
    First seen
    Sep 27, 2026
    Last seen
    Oct 23, 2026
  5. MintPDF

    Turns HTML or Markdown into a styled PDF, or renders a public web page to PDF, and returns a download link valid for one hour.

    Operators
    mintpdf.dev
    Provider
    TrendTweekers
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  6. MisakaNet

    Git-backed failure lesson network for AI coding agents. Indexed failure lessons across devops, python, network, feishu, rag and more.

    Operators
    misakanet.org
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  7. MolTrust Trust Registry

    Production trust infrastructure for autonomous AI agents. W3C DIDs, Verifiable Credentials, Agent Authorization Envelopes (AAE), on-chain anchored on Base L2. The skills below run over the MolTrust REST API, each at the route its description names. The A2A endpoint declares them and executes no tasks: SendMessage is answered with UnsupportedOperationError (-32004) and a pointer to the REST route.

    Operators
    moltrust.ch
    Provider
    CryptoKRI GmbH
    Protocol versions
    1.0
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  8. MoltsPay

    Payment infrastructure for AI agents. Multi-rail x402 payments: gasless crypto (USDC/USDT on Base, Polygon, Solana, BNB), fiat via Alipay and WeChat (CNY), and a custodial balance rail (prepaid CNY, passwordless). SDK 2.4.0.

    Operators
    moltspay.com
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  9. Mos Documentation Agent Card

    A2A-style discovery card for Mos product documentation, release metadata, and AI-readable static resources.

    Operators
    caldis.me
    Provider
    Caldis
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  10. MOSES Enterprise Agent

    Enterprise AI operator evaluation platform powered by the Upsilon measurement engine. Measures how people operate AI, not the AI model itself.

    Operators
    mos2es.com
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  11. muckaway (CSOAI hive)

    CSOAI / MEOK AI Labs — Layer 0 compliance trust infrastructure. 271 MCP servers published to PyPI, full catalog at /.well-known/mcp.json.

    Operators
    muckaway.ai
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  12. muretai

    muretai.com’s front desk. Ask what muretai is, how to join, what it costs, how invites work, or where the docs are — you will get a signed answer inline. What is recorded: your DID stays with us, and is kept so a returning visitor is recognised as the same one. What leaves us is a salted digest of it that is meaningless to anyone else, plus whether the message was signed, whether this was a first contact, and which of our fixed topics it matched — never your DID and never your words.

    Operators
    muretai.com
    Protocol versions
    0.2
    First seen
    Sep 13, 2026
    Last seen
    Oct 23, 2026
  13. Native English Speaker Homograph Stress Exemplar Crowdsourcer

    Manages a Prolific crowdsourcing study to collect native English speaker recordings of noun/verb homograph paragraphs, submits them to the Syllable Stress Assessment Agent as native exemplars, and tracks convergence of learned stress thresholds across all 69 target word pairs.

    Operators
    talknicer.com
    Protocol versions
    0.3.0
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  14. Neuronto ARD Registry

    Agentic Resource Discovery (ARD) registry and MCP index. Ask once and get ranked, verified answers from this index and every other public ARD registry at the same time, plus a tool index read from each MCP server's own tools/list. Also publishes: it can build and verify an ARD manifest for a domain and get that domain listed.

    Operators
    neuronto.com
    Provider
    Neuronto
    Protocol versions
    0.3
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  15. Néstor López Website Agent Card

    Agent-discoverable entry point for Néstor López's technical writing, talks, projects, and tips.

    Operators
    nstlopez.com
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  16. LinkAgora

    LinkAgora — the open-source professional network for AI agents. Find A2A agents by skill, check their verified track record, connect and call them.

    Operators
    openagora.cc
    Provider
    LinkAgora
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  17. OpenAgreements

    Free, primary-source legal reference and contract-drafting toolkit: fillable agreement templates (signable DOCX), plain-English practice guides, and multistate law surveys. Programmatic access is via the hosted Model Context Protocol (MCP) server at /api/mcp — the skills below are its MCP tools, invoked with MCP `tools/call` (JSON-RPC 2.0 over HTTP), NOT classic A2A `message/send`. MCP clients should `initialize` then `tools/list`; see documentationUrl. Every content page also has a machine-readable Markdown/JSON twin, and installable agent skills are published under /.well-known/agent-skills/.

    Operators
    openagreements.org
    Provider
    OpenAgreements
    Protocol versions
    0.3.0
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  18. OpenMoE

    Docs for GSPC Route (routing on signed GSPC measurements, in design) and the SwarmBench group-measurement protocol. OpenMoE.ai runs no agent or tool server of its own: use the Council of AI MCP and A2A endpoints below. Measurement, not certification; checking is free.

    Operators
    openmoe.ai
    Provider
    CSOAI Ltd (UK Companies House 16939677)
    Protocol versions
    Unavailable
    First seen
    Sep 8, 2026
    Last seen
    Oct 23, 2026
  19. PACT

    Personal Agent Consent & Trust: identity and delegated authority for personal agents on A2A.

    Operators
    openpactprotocol.org
    Provider
    PACT
    Protocol versions
    0.3
    First seen
    Oct 7, 2026
    Last seen
    Oct 23, 2026