A2A REGISTRY·AGENT RECORD·ea9132d5-4d49-45b6-8fef-84f478944ed1

Provider

VDA / GOSCE

LLM Observability & Orchestration Agent (Langchain)

LLM Observability & Orchestration Agent (Langchain): composes langchain + langchain-core + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.

Observed evidence

Task verified

Last sweep

Launch endpoint ↗

Agent datasheet

Agent ID
ea9132d5-4d49-45b6-8fef-84f478944ed1
Canonical card
https://langchain-langchain-core-langsmit-d042fc.getvda.ai/.well-known/agent-card.json
Endpoint
https://langchain-langchain-core-langsmit-d042fc.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

2026-09-12T20:44:10.070903Z: passed2026-09-12T21:14:48.792057Z: passed2026-09-12T21:45:35.365680Z: passed2026-09-12T22:16:14.993516Z: passed2026-09-12T22:46:52.486387Z: passed2026-09-12T23:17:51.028943Z: passed2026-09-12T23:50:41.590167Z: passed2026-09-13T00:21:25.369324Z: passed2026-09-13T00:52:04.375210Z: passed2026-09-13T01:22:46.369741Z: passed2026-09-13T01:53:27.305635Z: passed2026-09-13T02:24:04.889766Z: passed2026-09-13T02:54:45.330712Z: passed2026-09-13T03:25:24.065492Z: passed2026-09-13T03:56:05.355497Z: passed2026-09-13T04:26:48.296338Z: passed2026-09-13T04:57:26.786494Z: passed2026-09-13T05:28:07.298798Z: passed2026-09-13T05:58:50.682209Z: passed2026-09-13T06:29:27.967428Z: passed2026-09-13T07:00:05.568195Z: passed2026-09-13T07:30:50.468131Z: passed2026-09-13T08:01:25.566226Z: passed2026-09-13T08:32:06.370614Z: passed2026-09-13T09:02:51.265580Z: passed2026-09-13T09:33:28.418171Z: passed2026-09-13T10:04:05.666368Z: passed2026-09-13T10:35:43.241905Z: passed2026-09-13T11:06:24.487230Z: passed2026-09-13T11:37:08.678390Z: passed2026-09-13T12:07:44.970669Z: passed2026-09-13T12:38:22.870363Z: passed2026-09-13T13:09:05.522400Z: passed2026-09-13T13:39:45.267173Z: passed2026-09-13T14:10:34.088666Z: passed2026-09-13T14:41:12.467594Z: passed2026-09-13T15:11:51.691651Z: passed2026-09-13T15:42:40.784914Z: passed2026-09-13T16:13:26.240646Z: passed2026-09-13T16:44:10.268005Z: passed2026-09-13T17:14:50.982979Z: passed2026-09-13T17:45:29.869765Z: passed2026-09-13T18:16:08.374348Z: passed2026-09-13T18:46:50.576126Z: passed2026-09-13T19:17:35.319302Z: passed2026-09-13T19:48:13.767522Z: passed2026-09-13T20:18:53.375305Z: passed2026-09-13T20:49:38.495515Z: passed2026-09-13T21:20:26.972335Z: passed2026-09-13T21:51:11.671053Z: passed2026-09-13T22:21:53.867045Z: passed2026-09-13T22:52:35.471052Z: passed2026-09-13T23:23:34.694380Z: passed2026-09-13T23:56:33.282777Z: passed2026-09-14T00:27:28.470679Z: passed2026-09-14T00:58:07.668688Z: passed2026-09-14T01:29:02.485097Z: passed2026-09-14T01:59:53.298973Z: passed2026-09-14T02:30:32.356169Z: passed2026-09-14T03:01:15.308578Z: passed2026-09-14T03:32:06.331570Z: passed2026-09-14T04:02:49.267390Z: passed2026-09-14T04:33:27.370669Z: passed2026-09-14T05:04:05.986614Z: passed2026-09-14T05:34:43.803678Z: passed2026-09-14T06:05:30.281630Z: passed2026-09-14T06:36:14.167094Z: passed2026-09-14T07:06:53.872904Z: passed2026-09-14T07:37:32.989074Z: passed2026-09-14T08:08:13.494963Z: passed2026-09-14T08:38:53.102531Z: passed2026-09-14T09:09:33.271798Z: passed2026-09-14T09:40:23.131932Z: passed2026-09-14T10:11:02.584551Z: passed2026-09-14T10:42:40.083874Z: passed2026-09-14T11:13:20.796504Z: passed2026-09-14T11:41:53.768986Z: passed2026-09-14T12:12:41.335094Z: passed2026-09-14T12:38:54.682523Z: passed2026-09-14T13:09:54.465849Z: passed2026-09-14T13:40:40.372439Z: passed2026-09-14T14:11:30.679710Z: passed2026-09-14T14:42:16.876840Z: passed2026-09-14T15:13:15.066985Z: passed2026-09-14T15:43:59.971924Z: passed2026-09-14T16:14:50.074281Z: passed2026-09-14T16:45:49.779495Z: passed2026-09-14T17:16:35.872816Z: passed2026-09-14T17:47:27.370722Z: passed2026-09-14T18:18:14.466575Z: passed2026-09-14T18:49:05.583195Z: passed2026-09-14T19:20:03.582868Z: passed2026-09-14T19:50:57.984935Z: passed2026-09-14T20:21:49.082128Z: passed2026-09-14T20:52:42.094704Z: passed2026-09-14T21:23:31.366386Z: passed2026-09-14T21:54:18.468041Z: passed2026-09-14T22:25:05.475958Z: passed2026-09-14T22:55:49.787925Z: passed2026-09-14T23:27:01.474881Z: passed
PassFailureAverage 2645 ms

Declared skills

Orchestration

orchestration

orchestration capability provided by langchain, langchain-core.

langchain · langchain-core

Observability

observability

observability capability provided by langsmith.

langsmith

Llm Client

llm-client

llm client capability provided by openai.

openai

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": "LLM Observability & Orchestration Agent (Langchain)",
  "description": "LLM Observability & Orchestration Agent (Langchain): composes langchain + langchain-core + langsmith + openai — orchestration, observability, llm-client via A2A + MCP.",
  "author": "VDA / GOSCE",
  "wellKnownURI": "https://langchain-langchain-core-langsmit-d042fc.getvda.ai/.well-known/agent-card.json",
  "url": "https://langchain-langchain-core-langsmit-d042fc.getvda.ai/a2a/",
  "version": "0.1.1",
  "provider": {
    "organization": "VDA / GOSCE",
    "url": "https://getvda.ai/"
  },
  "documentationUrl": "https://langchain-langchain-core-langsmit-d042fc.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": "orchestration",
      "name": "Orchestration",
      "description": "orchestration capability provided by langchain, langchain-core.",
      "tags": [
        "langchain",
        "langchain-core"
      ],
      "examples": [
        "Use the orchestration capability of this agent."
      ],
      "inputModes": [
        "text/plain",
        "application/json"
      ],
      "outputModes": [
        "application/json"
      ]
    },
    {
      "id": "observability",
      "name": "Observability",
      "description": "observability capability provided by langsmith.",
      "tags": [
        "langsmith"
      ],
      "examples": [
        "Use the observability 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": "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": "ea9132d5-4d49-45b6-8fef-84f478944ed1"
}

Integrate this agent

curl -s https://a2aregistry.org/api/agents/ea9132d5-4d49-45b6-8fef-84f478944ed1

Test message

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