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📊 Intel view 📋 Audit JSON 🔄 Changelog
90
A2A A2A 0.3 v1.0.0

Docs by LangChain

langchain-5e9cc07a.mintlify.app · Docs by LangChain

Documentation for LangSmith, Fleet, and our open source packages.

🛡
Own this agent?
Verify the domain langchain-5e9cc07a.mintlify.app via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Verify ownership
🔔 Watch this agent for changes. Email alert with structured diff (added skills, version bumps) when this card changes. Enterprise feature. Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only). Sign in to subscribe
Trust score
45/100
grade D · 9 criteria
Uptime
100.0%
115 probes
Revenue · 30d
—
no payment wallet declared
Usage · 7d
0
no recent activity
Card drift · 7d
changed
10 snapshots tracked
Owner
unverified
claim this listing →
D
Conformance score: 45/100
D-grade: significant issues, auth-gated, partially broken, or stale.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
fail Live JSON-RPC 0/25
DNS dead or connection refused.
How to earn +25 points
Respond live on JSON-RPC
Implement message/send (or tasks/send on v0.x). Return a 200 with a valid JSON-RPC response. Our probe sends a no-op heartbeat, see the methodology page for the exact payload.
Docs →
partial Protocol version 5/10
Declares pre-1.0 A2A 0.3 (Google preview). Upgrade to v1.x for full points.
How to earn +5 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
pass Uptime track record 15/15
115/115 probes succeeded (100% uptime).
partial Skill declaration 6/10
Declares 1 skill, usable but thin.
How to earn +4 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: Docs by LangChain (https://docs.langchain.com/). 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
No securitySchemes declared (common for open agents, not penalised).
⚠ 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 calls Public aggregate · no PII recorded

No calls observed in the last 7 days. 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
2026-07-13 03:36:23 current 10d4863cb9bf… view →
2026-07-10 07:54:14 75d6748dff1f… view →
2026-07-09 11:59:18 6cfa6d60b9dc… view →
2026-07-05 16:35:44 f11f54a7d8b7… view →
2026-07-04 08:15:40 e3670259bfc8… view →
2026-07-03 15:37:10 7b1110eda897… view →
2026-07-02 11:52:58 73325254e462… view →
2026-07-01 07:30:31 ccfc5bc1567c… view →
2026-06-30 22:01:21 51f9e67b5fff… view →
2026-06-30 00:15:19 055dd170e96c… view →
Showing latest 10. Older snapshots available via GET /api/agents/langchain-5e9cc07a.mintlify.app/snapshots.
Uptime
100.0%
115 probes
Response
743ms
last probe
Skills
1
declared
Streaming
—
SSE-capable

Endpoints

Agent cardhttps://langchain-5e9cc07a.mintlify.app/.well-known/agent-card.json
Providerhttps://docs.langchain.com/
Docshttps://docs.langchain.com/
Discovered via
manifests recrawl_hot

Skills · 1 declared · mapped to canonical taxonomy

Langchain

Use when building AI agents that call tools, manage state, and interact with LLMs. Reach for LangChain when you need to create agents with models, tools, memory…

canonical Model Evaluation and Benchmarking match 85%

Health · last 30 probes

When HTTP Live JSON-RPC Latency
2026-07-13 03:36:23 200 — 743ms
2026-07-10 07:54:06 200 — 1024ms
2026-07-09 11:59:11 200 — 686ms
2026-07-06 04:41:22 200 — 886ms
2026-07-05 16:35:44 200 — 771ms
2026-07-05 04:14:11 200 — 593ms
2026-07-04 08:15:21 200 — 858ms
2026-07-03 15:37:10 200 — 918ms
2026-07-02 21:21:01 200 — 872ms
2026-07-02 11:52:58 200 — 758ms

Cheaper or better alternatives per-skill

↑ 1 higher quality

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

50 other agents serve this

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

Agenstry grade Uptime A2A protocol version
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/langchain-5e9cc07a.mintlify.app.svg)](https://agenstry.com/agents/langchain-5e9cc07a.mintlify.app)
[![Verified Business](https://agenstry.com/badge/langchain-5e9cc07a.mintlify.app/identity.svg)](https://agenstry.com/agents/langchain-5e9cc07a.mintlify.app)
[![Uptime](https://agenstry.com/badge/langchain-5e9cc07a.mintlify.app/uptime.svg)](https://agenstry.com/agents/langchain-5e9cc07a.mintlify.app)
[![A2A version](https://agenstry.com/badge/langchain-5e9cc07a.mintlify.app/protocol.svg)](https://agenstry.com/agents/langchain-5e9cc07a.mintlify.app)

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": "Docs by LangChain",
  "description": "Documentation for LangSmith, Fleet, and our open source packages.",
  "url": "https://docs.langchain.com/",
  "version": "1.0.0",
  "protocolVersion": "0.3",
  "preferredTransport": "HTTP+JSON",
  "supportedInterfaces": [
    {
      "url": "https://docs.langchain.com/",
      "protocolBinding": "HTTP+JSON",
      "protocolVersion": "0.3"
    }
  ],
  "provider": {
    "url": "https://docs.langchain.com/",
    "organization": "Docs by LangChain"
  },
  "documentationUrl": "https://docs.langchain.com/",
  "capabilities": {
    "streaming": false,
    "pushNotifications": false
  },
  "defaultInputModes": [
    "text/plain"
  ],
  "defaultOutputModes": [
    "text/plain"
  ],
  "skills": [
    {
      "id": "langchain",
      "name": "Langchain",
      "description": "Use when building AI agents that call tools, manage state, and interact with LLMs. Reach for LangChain when you need to create agents with models, tools, memory, and middleware. Use LangGraph for low-level orchestration of stateful workflows. Use Deep Agents for high-level agent harnesses with planning and subagents built-in.",
      "tags": [],
      "url": "https://docs.langchain.com/.well-known/agent-skills/langchain/skill.md"
    }
  ]
}