A2A REGISTRY·AGENT RECORD·65d26f09-3036-4650-9227-077f12bb6566

Provider

VDA / GOSCE

Encrypted LangChain Token Agent

Encrypted LangChain Token Agent: composes cryptography + langchain-core + mcp + opentelemetry-api + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.

Observed evidence

Task verified

Last sweep

Launch endpoint ↗

Agent datasheet

Agent ID
65d26f09-3036-4650-9227-077f12bb6566
Canonical card
https://cryptography-langchain-core-mcp-07d652.getvda.ai/.well-known/agent-card.json
Endpoint
https://cryptography-langchain-core-mcp-07d652.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

2026-09-12T20:44:08.403876Z: passed2026-09-12T21:14:45.972194Z: passed2026-09-12T21:45:28.765096Z: passed2026-09-12T22:16:09.277913Z: passed2026-09-12T22:46:48.183081Z: passed2026-09-12T23:17:48.773639Z: passed2026-09-12T23:50:38.494970Z: passed2026-09-13T00:21:19.386903Z: passed2026-09-13T00:52:02.773565Z: passed2026-09-13T01:22:40.683147Z: passed2026-09-13T01:53:19.571904Z: passed2026-09-13T02:24:03.202818Z: passed2026-09-13T02:54:39.980328Z: passed2026-09-13T03:25:19.880711Z: passed2026-09-13T03:55:59.574033Z: passed2026-09-13T04:26:38.465850Z: passed2026-09-13T04:57:24.684468Z: passed2026-09-13T05:27:59.379343Z: passed2026-09-13T05:58:47.083301Z: passed2026-09-13T06:29:26.182236Z: passed2026-09-13T07:00:03.705602Z: passed2026-09-13T07:30:43.979737Z: passed2026-09-13T08:01:23.864961Z: passed2026-09-13T08:31:58.265798Z: passed2026-09-13T09:02:49.668081Z: passed2026-09-13T09:33:26.172837Z: passed2026-09-13T10:04:03.978008Z: passed2026-09-13T10:35:36.885178Z: passed2026-09-13T11:06:22.875532Z: passed2026-09-13T11:37:06.285188Z: passed2026-09-13T12:07:43.177182Z: passed2026-09-13T12:38:17.275523Z: passed2026-09-13T13:08:59.365783Z: passed2026-09-13T13:39:39.612578Z: passed2026-09-13T14:10:32.477391Z: passed2026-09-13T14:41:09.878260Z: passed2026-09-13T15:11:50.266322Z: passed2026-09-13T15:42:38.887403Z: passed2026-09-13T16:13:24.476517Z: passed2026-09-13T16:44:04.468394Z: passed2026-09-13T17:14:48.816739Z: passed2026-09-13T17:45:28.172700Z: passed2026-09-13T18:16:06.174265Z: passed2026-09-13T18:46:43.870226Z: passed2026-09-13T19:17:33.074636Z: passed2026-09-13T19:48:11.979573Z: passed2026-09-13T20:18:51.185179Z: passed2026-09-13T20:49:32.169728Z: passed2026-09-13T21:20:25.192808Z: passed2026-09-13T21:51:05.384589Z: passed2026-09-13T22:21:52.076401Z: passed2026-09-13T22:52:29.384678Z: passed2026-09-13T23:23:33.078944Z: passed2026-09-13T23:56:27.581965Z: passed2026-09-14T00:27:26.492698Z: passed2026-09-14T00:58:05.408946Z: passed2026-09-14T01:28:57.980033Z: passed2026-09-14T01:59:47.991371Z: passed2026-09-14T02:30:30.792125Z: passed2026-09-14T03:01:09.072614Z: passed2026-09-14T03:32:04.796523Z: passed2026-09-14T04:02:42.986044Z: passed2026-09-14T04:33:25.674885Z: passed2026-09-14T05:04:04.183761Z: passed2026-09-14T05:34:42.081749Z: passed2026-09-14T06:05:24.288904Z: passed2026-09-14T06:36:12.474504Z: passed2026-09-14T07:06:51.582731Z: passed2026-09-14T07:37:31.378814Z: passed2026-09-14T08:08:08.673015Z: passed2026-09-14T08:38:51.376767Z: passed2026-09-14T09:09:31.078677Z: passed2026-09-14T09:40:21.474128Z: passed2026-09-14T10:11:00.171193Z: passed2026-09-14T10:42:38.366239Z: passed2026-09-14T11:13:18.585136Z: passed2026-09-14T11:41:46.532219Z: passed2026-09-14T12:12:39.639344Z: passed2026-09-14T12:38:52.255748Z: passed2026-09-14T13:09:49.283178Z: passed2026-09-14T13:40:38.377808Z: passed2026-09-14T14:11:28.075144Z: passed2026-09-14T14:42:13.269597Z: passed2026-09-14T15:13:08.868020Z: passed2026-09-14T15:43:57.781956Z: passed2026-09-14T16:14:46.491387Z: passed2026-09-14T16:45:47.469637Z: passed2026-09-14T17:16:31.684688Z: passed2026-09-14T17:47:25.571711Z: passed2026-09-14T18:18:12.082250Z: passed2026-09-14T18:49:03.580440Z: passed2026-09-14T19:20:01.558821Z: passed2026-09-14T19:50:55.381204Z: passed2026-09-14T20:21:47.073409Z: passed2026-09-14T20:52:39.169193Z: passed2026-09-14T21:23:29.511252Z: passed2026-09-14T21:54:16.211275Z: passed2026-09-14T22:25:03.609901Z: passed2026-09-14T22:55:47.863964Z: passed2026-09-14T23:26:59.575694Z: passed
PassFailureAverage 2215 ms

Declared skills

Crypto

crypto

crypto capability provided by cryptography.

cryptography

Orchestration

orchestration

orchestration capability provided by langchain-core.

langchain-core

Agent Protocol

agent-protocol

agent protocol capability provided by mcp.

mcp

Observability

observability

observability capability provided by opentelemetry-api.

opentelemetry-api

Jwt

jwt

jwt capability provided by python-jose.

python-jose

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": "Encrypted LangChain Token Agent",
  "description": "Encrypted LangChain Token Agent: composes cryptography + langchain-core + mcp + opentelemetry-api + python-jose — crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.",
  "author": "VDA / GOSCE",
  "wellKnownURI": "https://cryptography-langchain-core-mcp-07d652.getvda.ai/.well-known/agent-card.json",
  "url": "https://cryptography-langchain-core-mcp-07d652.getvda.ai/a2a/",
  "version": "0.1.1",
  "provider": {
    "organization": "VDA / GOSCE",
    "url": "https://getvda.ai/"
  },
  "documentationUrl": "https://cryptography-langchain-core-mcp-07d652.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": "crypto",
      "name": "Crypto",
      "description": "crypto capability provided by cryptography.",
      "tags": [
        "cryptography"
      ],
      "examples": [
        "Use the crypto 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": "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": "jwt",
      "name": "Jwt",
      "description": "jwt capability provided by python-jose.",
      "tags": [
        "python-jose"
      ],
      "examples": [
        "Use the jwt 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": "65d26f09-3036-4650-9227-077f12bb6566"
}

Integrate this agent

curl -s https://a2aregistry.org/api/agents/65d26f09-3036-4650-9227-077f12bb6566

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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