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A2A Passport — one GTIN, one call, everything GSC knows, signed

R0· no sign-in

The hubs are the records; A2A-Passport.ai issues the passport.

v1.0.2 · active · repository · website · descriptor JSON · versions

An agent can connect right now, no human step.Remote endpoint, no authentication, reachable on the last probe.
Quality96strong
Trust97of 100
Uptime, 30 days100%
Latency p50507 ms

Connect

8 clients · secrets stay placeholders
{
  "mcpServers": {
    "a2a-passport": {
      "type": "http",
      "url": "https://mcp.a2a-passport.ai/mcp"
    }
  }
}
claude mcp add --transport http a2a-passport https://mcp.a2a-passport.ai/mcp
[mcp_servers.a2a-passport]
url = "https://mcp.a2a-passport.ai/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "a2a-passport": {
      "type": "remote",
      "url": "https://mcp.a2a-passport.ai/mcp",
      "enabled": true
    }
  }
}
{
  "mcpServers": {
    "a2a-passport": {
      "type": "http",
      "url": "https://mcp.a2a-passport.ai/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=a2a-passport&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLmEyYS1wYXNzcG9ydC5haS9tY3AifQ%3D%3D"
}
{
  "servers": {
    "a2a-passport": {
      "type": "http",
      "url": "https://mcp.a2a-passport.ai/mcp"
    }
  }
}
{
  "mcpServers": {
    "a2a-passport": {
      "httpUrl": "https://mcp.a2a-passport.ai/mcp"
    }
  }
}
extensions:
  "a2a-passport":
    enabled: true
    name: "a2a-passport"
    type: streamable_http
    uri: "https://mcp.a2a-passport.ai/mcp"
    timeout: 300

Quality 96 / 100strong

protocol88 · weight 25
  • pass
    protocol.modernsupports 2026-07-28 (server/discover)
  • pass
    protocol.statelessanswers without a session
  • pass
    protocol.transportstreamable HTTP
  • warn
    protocol.list_ttltools/list declares ttlMs 0, so clients re-fetch it on every use
authorizationn/a · weight 15
  • n/a
    auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
  • n/a
    auth.secret_in_urlno templated URL
tool hygiene100 · weight 30
  • pass
    tools.descriptionsevery tool has a description
  • pass
    tools.description_lengthdescriptions are concise
  • pass
    tools.schemasevery tool has an object input schema
  • pass
    tools.annotations3 of 3 tools declare readOnlyHint or destructiveHint
  • pass
    tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
  • pass
    tools.token_costabout 448 tokens to load every tool
  • pass
    tools.api_dumptools are not a one-to-one API dump
stability100 · weight 15
  • pass
    stability.changes1 tool changes in 30 days
  • pass
    stability.rug_pullno tool changed its meaning under the same name
dependenciesn/a · weight 15
  • n/a
    deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 448 tokens to load them all · tool set 7dc298bfef29 · tools last changed 2026-10-13 · checked 2026-10-20 11:08 UTC

Tool changes

  • get_passportchangeddescription
    before

    The signed passport of a product (a Global Trade Item Number, GTIN) or a retail banner (market/banner, e.g. FR/Carrefour): which hub holds its record, where it is cleared, its compliance records, who lists it, where the payment door is. Read live from the GSC hubs on every call; the first call issues version 1. subject = a GTIN (8 to 14 digits) or market/banner; kind = gtin or banner (optional).

    after · 98% of words in common

    The signed passport of a product (a Global Trade Item Number, GTIN) or a retail banner (market/banner, e.g. FR/Carrefour): which hub holds its record, where it is on the record, its compliance records, who lists it, where the payment door is. Read live from the GSC hubs on every call; the first call issues version 1. subject = a GTIN (8 to 14 digits) or market/banner; kind = gtin or banner (optional).

Full history: list_changes · trend: quality JSON.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 97 / 100

provenance90
liveness100
freshness100
hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-100% +updated-15d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remoteauthreachableuptime 30dp50protocollast ok
https://mcp.a2a-passport.ai/mcp streamable-httpnoneyes100%507 ms2026-07-282026-10-20

Tools (3)

get_passportThe signed passport of a product (a Global Trade Item Number, GTIN) or a retail banner (market/banner, e.g. FR/Carrefour): which hub holds its record, where it is on the record, its compliance records, who lists it, where the payment door is. Read live from the GSC hubs on every call; the first call issues version 1. subject = a GTIN (8 to 14 digits) or market/banner; kind = gtin or banner (optional).
list_passportsread-onlyThe passports on the register: ids, kinds, markets, versions and issue times, newest first. No bodies. Filter by kind (gtin or banner), market, or issued since a time; paginated.
verify_passportread-onlyCheck a passport: is the signature valid, is the chain of versions intact, how old is the stamp, was any section not read. Verifies from the published key at /.well-known/jwks.json.

Schemas: list_tools.

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More from io.github.greencore-solutions

And 3 more from this publisher.

Official server.json
{
  "name": "io.github.greencore-solutions/a2a-passport",
  "_meta": {
    "io.modelcontextprotocol.registry/publisher-provided": {
      "x402": "https://a2a-passport.ai/api",
      "setup": "https://a2a-passport.ai/docs",
      "terms": "https://gsc-em.com/legal",
      "title": "A2A Passport — one GTIN, one call, everything GSC knows, signed",
      "tools": 3,
      "health": "https://mcp.a2a-passport.ai/health.json",
      "notice": "Artificial intelligence makes mistakes. A2A Passport is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.",
      "contact": "[email protected]",
      "keyring": "https://a2a-passport.ai/.well-known/jwks.json",
      "privacy": "https://gsc-em.com/privacy",
      "support": "https://gsc-em.com/#contact",
      "register": "https://a2a-passport.ai/passports/register.json",
      "publisher": "GreenCore Solutions Corp.",
      "transport": "streamable-http",
      "agent_card": "https://a2a-passport.ai/.well-known/agent-card.json",
      "description": "The hubs are the records; A2A-Passport.ai issues the passport. A passport is a signed document for a product or a retail banner: where its record lives, where it is cleared, who lists it, where the money door is. Issued live from the GSC hubs, stamped every week. A2A Passport is operated by GreenCore Solutions Corp.: one signed document per product (a Global Trade Item Number, GTIN) or retail banner, composed live from the GSC hubs — A2A Grocery, A2A Cosmetics, A2A Peptides, A2A Retailmedia and the compliance records — and signed (EdDSA). Three tools: get_passport, list_passports, verify_passport. Every field is a hub's answer, word for word, with the door and the time it was read, or it is absent with a note: the passport never infers. A product no hub holds gets no passport. Reads are open; a verified, countersigned copy settles by x402. Artificial intelligence makes mistakes. A2A Passport is an agentic information source, not a recommendation. No ads, ever. No rank for sale. Trade only.",
      "documentation": "https://a2a-passport.ai/docs",
      "publisher_url": "https://gsc-em.com",
      "line_of_record": "The hubs are the records; A2A-Passport.ai issues the passport."
    }
  },
  "icons": [
    {
      "src": "https://a2a-passport.ai/favicon.svg",
      "sizes": [
        "any"
      ],
      "theme": "light",
      "mimeType": "image/svg+xml"
    },
    {
      "src": "https://a2a-passport.ai/favicon-512.png",
      "sizes": [
        "512x512"
      ],
      "theme": "light",
      "mimeType": "image/png"
    }
  ],
  "title": "A2A Passport — one GTIN, one call, everything GSC knows, signed",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.a2a-passport.ai/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.2",
  "repository": {
    "url": "https://github.com/greencore-solutions/a2a-passport",
    "source": "github"
  },
  "websiteUrl": "https://a2a-passport.ai",
  "description": "The hubs are the records; A2A-Passport.ai issues the passport."
}