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

Task verified

Last sweep

Launch endpoint ↗

Agent datasheet

Agent ID
17fac36c-4db6-4749-82ca-172f8cb5886e
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

2026-09-12T20:44:10.372370Z: passed2026-09-12T21:14:49.371824Z: passed2026-09-12T21:45:35.669560Z: passed2026-09-12T22:16:15.282045Z: passed2026-09-12T22:46:52.570039Z: passed2026-09-12T23:17:51.368904Z: passed2026-09-12T23:50:42.092457Z: passed2026-09-13T00:21:25.675628Z: passed2026-09-13T00:52:04.895874Z: passed2026-09-13T01:22:46.778370Z: passed2026-09-13T01:53:27.868183Z: passed2026-09-13T02:24:05.273465Z: passed2026-09-13T02:54:45.690028Z: passed2026-09-13T03:25:24.466593Z: passed2026-09-13T03:56:05.800914Z: passed2026-09-13T04:26:48.684892Z: passed2026-09-13T04:57:26.985485Z: passed2026-09-13T05:28:07.670441Z: passed2026-09-13T05:58:50.971707Z: passed2026-09-13T06:29:28.191339Z: passed2026-09-13T07:00:05.707419Z: passed2026-09-13T07:30:50.767838Z: passed2026-09-13T08:01:25.866172Z: passed2026-09-13T08:32:06.706695Z: passed2026-09-13T09:02:51.868805Z: passed2026-09-13T09:33:28.868631Z: passed2026-09-13T10:04:06.275138Z: passed2026-09-13T10:35:43.770260Z: passed2026-09-13T11:06:24.871398Z: passed2026-09-13T11:37:09.170449Z: passed2026-09-13T12:07:45.188342Z: passed2026-09-13T12:38:23.273998Z: passed2026-09-13T13:09:05.967542Z: passed2026-09-13T13:39:45.667598Z: passed2026-09-13T14:10:34.469288Z: passed2026-09-13T14:41:12.670313Z: passed2026-09-13T15:11:52.387465Z: passed2026-09-13T15:42:41.273042Z: passed2026-09-13T16:13:26.841389Z: passed2026-09-13T16:44:10.688207Z: passed2026-09-13T17:14:51.371164Z: passed2026-09-13T17:45:30.172166Z: passed2026-09-13T18:16:08.478268Z: passed2026-09-13T18:46:50.870348Z: passed2026-09-13T19:17:35.773221Z: passed2026-09-13T19:48:14.169508Z: passed2026-09-13T20:18:53.767049Z: passed2026-09-13T20:49:38.866728Z: passed2026-09-13T21:20:27.271908Z: passed2026-09-13T21:51:12.068604Z: passed2026-09-13T22:21:54.168962Z: passed2026-09-13T22:52:35.669792Z: passed2026-09-13T23:23:35.178097Z: passed2026-09-13T23:56:33.878021Z: passed2026-09-14T00:27:28.770331Z: passed2026-09-14T00:58:07.869726Z: passed2026-09-14T01:29:02.900636Z: passed2026-09-14T01:59:53.683587Z: passed2026-09-14T02:30:32.783167Z: passed2026-09-14T03:01:15.669964Z: passed2026-09-14T03:32:06.803849Z: passed2026-09-14T04:02:49.773402Z: passed2026-09-14T04:33:27.773309Z: passed2026-09-14T05:04:06.292753Z: passed2026-09-14T05:34:44.375725Z: passed2026-09-14T06:05:30.668454Z: passed2026-09-14T06:36:14.471024Z: passed2026-09-14T07:06:54.269513Z: passed2026-09-14T07:37:33.578722Z: passed2026-09-14T08:08:14.077408Z: passed2026-09-14T08:38:53.484157Z: passed2026-09-14T09:09:33.769953Z: passed2026-09-14T09:40:23.674877Z: passed2026-09-14T10:11:02.901472Z: passed2026-09-14T10:42:40.773244Z: passed2026-09-14T11:13:21.176130Z: passed2026-09-14T11:41:55.055563Z: passed2026-09-14T12:12:41.753510Z: passed2026-09-14T12:38:56.644799Z: passed2026-09-14T13:09:55.063627Z: passed2026-09-14T13:40:40.596285Z: passed2026-09-14T14:11:30.971648Z: passed2026-09-14T14:42:17.176828Z: passed2026-09-14T15:13:15.678273Z: passed2026-09-14T15:43:59.971933Z: passed2026-09-14T16:14:50.381155Z: passed2026-09-14T16:45:50.265483Z: passed2026-09-14T17:16:36.369990Z: passed2026-09-14T17:47:27.971243Z: passed2026-09-14T18:18:15.175363Z: passed2026-09-14T18:49:06.284826Z: passed2026-09-14T19:20:04.174790Z: passed2026-09-14T19:50:58.688406Z: passed2026-09-14T20:21:49.572035Z: passed2026-09-14T20:52:43.170394Z: passed2026-09-14T21:23:32.473844Z: passed2026-09-14T21:54:19.280640Z: passed2026-09-14T22:25:06.371439Z: passed2026-09-14T22:55:50.280345Z: passed2026-09-14T23:27:02.581253Z: passed
PassFailureAverage 1585 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": null
  },
  "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"
}

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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