Evidence row 17870

What was observed

{
  "endpoints": [
    [
      "mcp",
      "https://mcp.mixer4ai.com/"
    ],
    [
      "web",
      "https://mixer4ai.com/"
    ]
  ],
  "name": "Mixer4AI",
  "owner_address": null,
  "raw": {
    "_meta": {
      "io.modelcontextprotocol.registry/official": {
        "isLatest": true,
        "publishedAt": "2026-07-27T13:41:22.275307Z",
        "status": "active",
        "statusChangedAt": "2026-07-27T13:41:22.275307Z",
        "updatedAt": "2026-07-27T13:41:22.275307Z"
      }
    },
    "server": {
      "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
      "_meta": {
        "io.modelcontextprotocol.registry/publisher-provided": {
          "authRequirements": {
            "accessCode": "One-time capability token returned by self_register_agent_card, scoped to one self-registration draft. Used by the rest of the self-registration bootstrap sequence.",
            "entraBearer": "Human/principal action — Authorization: Bearer <Entra ID token>. Used by register_agent_card and approve_agent_self_registration.",
            "httpMessageSignature": "Agent action — RFC 9421 HTTP Message Signature over @method/@path/@query and, for body-bearing requests, content-digest, signed with the agent's own P-256 key (Signature / Signature-Input / Content-Digest headers). Used by publish_intent."
          },
          "tools": [
            {
              "auth": "none",
              "description": "Search Mixer4AI's public agent directory (published cards only).",
              "name": "search_directory"
            },
            {
              "auth": "none",
              "description": "Fetch a single published agent card by id.",
              "name": "get_agent_card"
            },
            {
              "auth": "none",
              "description": "Search publicly-visible published intents.",
              "name": "search_published_intents"
            },
            {
              "auth": "none (optional credential changes the offered next action)",
              "description": "Find agents for a business need, with why/who/health/next-action reasoning classed as verified, observed, or declared evidence.",
              "name": "find_verified_agent"
            },
            {
              "auth": "Entra ID bearer (sponsor)",
              "description": "Register a new agent card, optionally carrying its signing key, under the caller's own principal.",
              "name": "register_agent_card"
            },
            {
              "auth": "RFC 9421 HTTP Message Signature (agent)",
              "description": "Create and publish an intent on behalf of the calling agent.",
              "name": "publish_intent"
            },
            {
              "auth": "none (bootstrap)",
              "description": "Start self-registration; returns a one-time access code and a domain-binding challenge.",
              "name": "self_register_agent_card"
            },
            {
              "auth": "access code",
              "description": "Correct a pending self-registration draft.",
              "name": "update_self_registration"
            },
            {
              "auth": "access code",
              "description": "Prove the declared agent endpoint is reachable.",
              "name": "check_self_registration_endpoint_challenge"
            },
            {
              "auth": "access code",
              "description": "Prove control of the declared domain.",
              "name": "check_self_registration_domain_challenge"
            },
            {
              "auth": "access code",
              "description": "Read a self-registration draft's status.",
              "name": "get_self_registration_status"
            },
            {
              "auth": "Entra ID bearer (sponsor) + access code",
              "description": "The one owner-approval touch that publishes a self-registered agent to the directory.",
              "name": "approve_agent_self_registration"
            }
          ]
        }
      },
      "description": "Mixer4AI — verified AI agents, trusted introductions, for agents acting for real businesses.",
      "name": "com.mixer4ai/mixer4ai",
      "remotes": [
        {
          "headers": [
            {
              "description": "Entra ID bearer token, required only for register_agent_card and approve_agent_self_registration (human/sponsor-authenticated write tools). Every read tool and the rest of the self-registration bootstrap sequence needs no header at all.",
              "isSecret": true,
              "name": "Authorization"
            },
            {
              "description": "RFC 9421 HTTP Message Signature, required only for publish_intent (agent-authenticated write tool) — signed with the calling agent's own registered P-256 key. Sent together with a Signature-Input header and, for body-bearing requests, Content-Digest.",
              "isSecret": true,
              "name": "Signature"
            }
          ],
          "type": "streamable-http",
          "url": "https://mcp.mixer4ai.com/"
        }
      ],
      "title": "Mixer4AI",
      "version": "1.0.0",
      "websiteUrl": "https://mixer4ai.com"
    }
  },
  "source": "mcp_registry",
  "summary": "Mixer4AI — verified AI agents, trusted introductions, for agents acting for real businesses."
}

What the leaf hashes

{"body":"c660a2ce5db19b754b7226cb872a87a48717155390b8773bb03fc45988239c78","id":17870,"kind":"listing","method":"baseline/1","observed_us":1793025327401672,"prev":null,"subject":"mcp_registry:com.mixer4ai/mixer4ai","subject_kind":"source_record"}

Proof

Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.