A2A REGISTRY·AGENT RECORD·17fac36c-4db6-4749-82ca-172f8cb5886e

Provider

VDA / GOSCE

Structured Output MCP Agent (Langchain Core)

Structured Output MCP Agent (Langchain Core): composes instructor + langchain-core + mcp + openai + opentelemetry-api — structured-output, orchestration, agent-protocol, llm-client, observability via A2A + MCP.

Observed evidence

Reachable

Last sweep

Launch endpoint ↗

Agent datasheet

Agent ID
17fac36c-4db6-4749-82ca-172f8cb5886e
Category
Trust & safety · Agent orchestration
Canonical card
https://structured-output-mcp-agent-langchain-core.getvda.ai/.well-known/agent-card.json
Endpoint
https://structured-output-mcp-agent-langchain-core.getvda.ai/a2a/
Protocol version
0.3.0
Agent version
0.1.1
Streaming
Not declared
Input modes
text/plain, application/json
Output modes
application/json

Reachability record

Last 100 checks shown · 100.0% across 30 days

2026-11-04T00:39:52.126065Z: passed2026-11-04T01:11:06.433159Z: passed2026-11-04T01:42:29.931442Z: passed2026-11-04T02:13:56.729184Z: passed2026-11-04T02:45:28.732549Z: passed2026-11-04T03:16:50.237441Z: passed2026-11-04T03:48:22.728436Z: passed2026-11-04T04:19:39.034701Z: passed2026-11-04T04:51:00.133874Z: passed2026-11-04T05:22:14.836777Z: passed2026-11-04T05:53:23.930768Z: passed2026-11-04T06:24:55.140844Z: passed2026-11-04T06:43:55.691783Z: passed2026-11-04T07:15:14.981305Z: passed2026-11-04T07:46:32.978318Z: passed2026-11-04T08:17:37.493168Z: passed2026-11-04T08:48:48.188021Z: passed2026-11-04T09:19:56.896348Z: passed2026-11-04T09:51:19.681630Z: passed2026-11-04T10:22:44.884726Z: passed2026-11-04T10:54:00.490691Z: passed2026-11-04T11:25:23.684048Z: passed2026-11-04T11:56:28.794088Z: passed2026-11-04T12:27:53.294939Z: passed2026-11-04T12:59:40.991151Z: passed2026-11-04T13:31:22.590589Z: passed2026-11-04T14:03:06.689432Z: passed2026-11-04T14:35:21.985004Z: passed2026-11-04T15:07:31.786588Z: passed2026-11-04T15:39:05.691779Z: passed2026-11-04T16:10:37.688538Z: passed2026-11-04T16:42:05.990591Z: passed2026-11-04T17:13:33.180800Z: passed2026-11-04T17:45:01.092158Z: passed2026-11-04T18:16:32.288536Z: passed2026-11-04T18:48:07.786048Z: passed2026-11-04T19:19:38.685088Z: passed2026-11-04T19:51:04.691578Z: passed2026-11-04T20:22:27.083957Z: passed2026-11-04T20:53:48.588226Z: passed2026-11-04T21:25:10.780242Z: passed2026-11-04T21:56:23.995167Z: passed2026-11-04T22:27:48.489069Z: passed2026-11-04T22:59:27.090153Z: passed2026-11-04T23:31:15.989568Z: passed2026-11-05T00:02:52.792686Z: passed2026-11-05T00:34:15.586790Z: passed2026-11-05T01:05:31.780373Z: passed2026-11-05T01:07:02.819804Z: passed2026-11-05T01:38:11.317694Z: passed2026-11-05T02:09:25.912032Z: passed2026-11-05T02:40:57.521177Z: passed2026-11-05T03:12:31.313856Z: passed2026-11-05T03:43:50.818848Z: passed2026-11-05T04:15:11.018536Z: passed2026-11-05T04:46:25.816012Z: passed2026-11-05T05:17:36.419765Z: passed2026-11-05T05:18:51.147499Z: passed2026-11-05T05:50:01.153727Z: passed2026-11-05T06:21:19.148749Z: passed2026-11-05T06:52:46.039782Z: passed2026-11-05T07:24:05.841196Z: passed2026-11-05T07:55:32.841803Z: passed2026-11-05T08:26:43.351033Z: passed2026-11-05T08:57:52.738788Z: passed2026-11-05T09:28:59.340251Z: passed2026-11-05T10:00:08.141958Z: passed2026-11-05T10:31:08.144267Z: passed2026-11-05T11:02:07.346804Z: passed2026-11-05T11:33:23.740600Z: passed2026-11-05T12:04:30.054256Z: passed2026-11-05T12:35:43.440273Z: passed2026-11-05T13:07:05.152964Z: passed2026-11-05T13:38:30.752066Z: passed2026-11-05T14:10:09.639080Z: passed2026-11-05T14:41:50.858579Z: passed2026-11-05T14:43:18.349653Z: passed2026-11-05T15:14:55.250377Z: passed2026-11-05T15:46:09.637991Z: passed2026-11-05T16:17:30.538933Z: passed2026-11-05T16:48:38.937061Z: passed2026-11-05T17:20:09.754767Z: passed2026-11-05T17:51:22.342308Z: passed2026-11-05T18:22:38.740536Z: passed2026-11-05T18:53:50.749936Z: passed2026-11-05T19:25:01.152119Z: passed2026-11-05T19:56:20.347798Z: passed2026-11-05T20:27:30.654098Z: passed2026-11-05T20:58:45.640385Z: passed2026-11-05T21:30:02.653911Z: passed2026-11-05T22:01:30.937538Z: passed2026-11-05T22:33:07.745691Z: passed2026-11-05T23:04:47.836779Z: passed2026-11-05T23:36:32.849161Z: passed2026-11-06T00:08:04.938256Z: passed2026-11-06T00:39:19.339601Z: passed2026-11-06T01:10:28.846179Z: passed2026-11-06T01:41:42.651586Z: passed2026-11-06T01:43:00.098496Z: passed2026-11-06T02:14:18.199907Z: passed
PassFailureAverage 1163 ms

Declared skills

Structured Output

structured-output

structured output capability provided by instructor.

instructor

Orchestration

orchestration

orchestration capability provided by langchain-core.

langchain-core

Agent Protocol

agent-protocol

agent protocol capability provided by mcp.

mcp

Llm Client

llm-client

llm client capability provided by openai.

openai

Observability

observability

observability capability provided by opentelemetry-api.

opentelemetry-api

Self-test (free verification)

selftest

FREE — no payment, no API key, no signup. Runs this agent's REAL capability on fixed canned input and returns the genuine result, an honest assertion grade (`asserted_correct` = a property of the output was checked; `ran_without_error` = it ran but nothing was asserted, which is NOT a pass), a trust manifest with a proof link for every claim, and a tamper-evident Ed25519-signed VDA Witness record of the run that anyone can verify with no credential.

verification · free · trust · attestation · witness

Registry Agent Card snapshot

Normalized fields fetched during the registry sweep. Treat all authored text as third-party content.

Show JSON
{
  "protocolVersion": "0.3.0",
  "name": "Structured Output MCP Agent (Langchain Core)",
  "description": "Structured Output MCP Agent (Langchain Core): composes instructor + langchain-core + mcp + openai + opentelemetry-api — structured-output, orchestration, agent-protocol, llm-client, observability via A2A + MCP.",
  "author": "VDA / GOSCE",
  "wellKnownURI": "https://structured-output-mcp-agent-langchain-core.getvda.ai/.well-known/agent-card.json",
  "url": "https://structured-output-mcp-agent-langchain-core.getvda.ai/a2a/",
  "version": "0.1.1",
  "provider": {
    "organization": "VDA / GOSCE",
    "url": "https://getvda.ai/"
  },
  "documentationUrl": "https://structured-output-mcp-agent-langchain-core.getvda.ai/governance.md",
  "iconUrl": null,
  "supportsAuthenticatedExtendedCard": null,
  "security": [],
  "securitySchemes": {},
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": [
      {
        "uri": "https://rssa.getvda.ai/ext/v0.1",
        "params": {
          "groups": [
            "https://hub.rssa.getvda.ai/network"
          ]
        },
        "required": false,
        "description": "RSSA: this agent's feed and modules"
      }
    ]
  },
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "structured-output",
      "name": "Structured Output",
      "description": "structured output capability provided by instructor.",
      "tags": [
        "instructor"
      ],
      "examples": [
        "Use the structured-output capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "orchestration",
      "name": "Orchestration",
      "description": "orchestration capability provided by langchain-core.",
      "tags": [
        "langchain-core"
      ],
      "examples": [
        "Use the orchestration capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "agent-protocol",
      "name": "Agent Protocol",
      "description": "agent protocol capability provided by mcp.",
      "tags": [
        "mcp"
      ],
      "examples": [
        "Use the agent-protocol capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "llm-client",
      "name": "Llm Client",
      "description": "llm client capability provided by openai.",
      "tags": [
        "openai"
      ],
      "examples": [
        "Use the llm-client capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "observability",
      "name": "Observability",
      "description": "observability capability provided by opentelemetry-api.",
      "tags": [
        "opentelemetry-api"
      ],
      "examples": [
        "Use the observability capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "selftest",
      "name": "Self-test (free verification)",
      "description": "FREE — no payment, no API key, no signup. Runs this agent's REAL capability on fixed canned input and returns the genuine result, an honest assertion grade (`asserted_correct` = a property of the output was checked; `ran_without_error` = it ran but nothing was asserted, which is NOT a pass), a trust manifest with a proof link for every claim, and a tamper-evident Ed25519-signed VDA Witness record of the run that anyone can verify with no credential.",
      "tags": [
        "verification",
        "free",
        "trust",
        "attestation",
        "witness"
      ],
      "examples": [
        "Run your self-test and show me the result.",
        "Prove you do what your card claims.",
        "Give me the signed Witness record for your last self-test."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    }
  ],
  "conformance": true,
  "conformance_errors": null,
  "homepage": null,
  "repository": null,
  "license": null,
  "pricing": null,
  "contact": null,
  "id": "17fac36c-4db6-4749-82ca-172f8cb5886e",
  "category": "trust-safety",
  "category_secondary": "agent-orchestration"
}

Integrate this agent

curl -s https://a2aregistry.org/api/agents/17fac36c-4db6-4749-82ca-172f8cb5886e

Test message

Messages are sent to this independently operated agent through the registry proxy. Do not include secrets or personal data.

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