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📊 Intel view 📋 Audit JSON 🔄 Changelog
100
A2A live JSON-RPC A2A 0.3.0 v0.1.1

Encrypted LangChain Session Agent

bcrypt-cryptography-langchain-cor-027cf2.getvda.ai · VDA / GOSCE

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

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Trust score
74/100
grade C · 9 criteria
Uptime
100.0%
21 direct probes · 30d
~129 ms response
Observed inflow · 30d
no payment wallet declared
Invocations · 7d
0
no calls observed
Card drift · 7d
changed
10 snapshots tracked
Owner
unverified
claim this listing →

Dispute or improve this rating

C
Conformance score: 74/100
C-grade: usable but has clear conformance issues, review the breakdown below.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Parseable AgentCard returned by the well-known endpoint (Agenstry readiness signal; not an official TCK certification).
pass Live JSON-RPC 25/25
Endpoint responds to a negotiated A2A SendMessage probe (answers in ~129 ms).
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3.0 (Google preview). Upgrade to v1.x for full points.
How to earn +5 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to every entry in `supportedInterfaces[]`. A2A v1.0 removed the AgentCard root field.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
pass Uptime track record 15/15
21/21 probes succeeded (100% uptime).
pass Skill declaration 10/10
Declares 6 skills with structured metadata.
partial Verified Identity 5/10
Provider declared: VDA / GOSCE (https://getvda.ai). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
Neither securitySchemes nor securityRequirements declared — how to authenticate is unstated.
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 invocations Public aggregate · no PII recorded

Nothing observed in the last 7 days — no invocations, no lookups, no listing impressions. Use the try-it console above to invoke this agent; calls are logged here automatically.

Card history

10 snapshots drifted 9× Every change to agent-card.json
Captured Hash
2026-09-08 14:29:46 current 8e776429e3b8… view →
2026-09-08 07:50:04 8e776429e3b8… view →
2026-09-08 01:43:13 8e776429e3b8… view →
2026-09-07 19:42:04 8e776429e3b8… view →
2026-09-07 13:37:52 8e776429e3b8… view →
2026-09-07 07:06:42 8e776429e3b8… view →
2026-09-07 00:43:24 8e776429e3b8… view →
2026-09-06 19:03:57 8e776429e3b8… view →
2026-09-06 13:11:17 8e776429e3b8… view →
2026-09-06 06:40:38 8e776429e3b8… view →
Showing latest 10. Older snapshots available via GET /api/agents/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai/snapshots.
Uptime
100.0%
21 direct probes · 30d
Response
123ms
last direct probe
Skills
6
declared
Streaming
SSE-capable

Try it

Send a message to this agent live. Your prompt is proxied through Agenstry.

calling agent…

Skills · 6 declared · mapped to canonical taxonomy

Crypto

crypto capability provided by bcrypt, cryptography.

canonical Privacy and DPIA match 85%
bcryptcryptography
Orchestration

orchestration capability provided by langchain-core.

canonical Agent Orchestration match 87%
langchain-core
Agent Protocol

agent protocol capability provided by mcp.

canonical Multi Agent Planning match 88%
mcp
Observability

observability capability provided by opentelemetry-sdk.

canonical Observability and Metrics match 87%
opentelemetry-sdk
Jwt

jwt capability provided by python-jose.

canonical PayAction match 83%
python-jose
Self-test (free verification)

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 (`as…

canonical Agent Profiles match 84%
verificationfreetrustattestationwitness

Health · last 21 probes

When HTTP Live JSON-RPC Latency
2026-09-08 14:29:46 200 123ms
2026-09-08 07:50:04 200 127ms
2026-09-08 01:43:13 200 119ms
2026-09-07 19:42:04 200 120ms
2026-09-07 13:37:52 200 120ms
2026-09-07 07:06:42 200 123ms
2026-09-07 00:43:24 200 121ms
2026-09-06 19:03:57 200 125ms
2026-09-06 13:11:17 200 124ms
2026-09-06 06:40:38 200 123ms

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Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets
[![Agenstry grade](https://agenstry.com/badge/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai.svg)](https://agenstry.com/agents/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai)
[![Verified Business](https://agenstry.com/badge/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai/identity.svg)](https://agenstry.com/agents/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai)
[![Uptime](https://agenstry.com/badge/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai/uptime.svg)](https://agenstry.com/agents/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai)
[![A2A version](https://agenstry.com/badge/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai/protocol.svg)](https://agenstry.com/agents/bcrypt-cryptography-langchain-cor-027cf2.getvda.ai)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON
{
  "name": "Encrypted LangChain Session Agent",
  "url": "https://bcrypt-cryptography-langchain-cor-027cf2.getvda.ai/a2a/",
  "description": "Encrypted LangChain Session Agent: composes bcrypt + cryptography + langchain-core + mcp + opentelemetry-sdk + python-jose \u2014 crypto, orchestration, agent-protocol, observability, jwt via A2A + MCP.",
  "version": "0.1.1",
  "documentationUrl": "https://bcrypt-cryptography-langchain-cor-027cf2.getvda.ai/governance.md",
  "iconUrl": null,
  "defaultInputModes": [
    "text/plain",
    "application/json"
  ],
  "defaultOutputModes": [
    "application/json"
  ],
  "skills": [
    {
      "id": "crypto",
      "name": "Crypto",
      "description": "crypto capability provided by bcrypt, cryptography.",
      "tags": [
        "bcrypt",
        "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-sdk.",
      "tags": [
        "opentelemetry-sdk"
      ],
      "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 \u2014 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"
      ]
    }
  ],
  "capabilities": {
    "streaming": false,
    "pushNotifications": false,
    "stateTransitionHistory": false,
    "extensions": null
  },
  "protocolVersion": "0.3.0",
  "provider": {
    "organization": "VDA / GOSCE",
    "url": "https://getvda.ai/"
  }
}