LangGraph

LangGraph is an open-source framework from LangChain for building stateful, multi-actor agent workflows with low-level primitives for greater control over agent behavior. LangGraph Platform (LangSmith Deployment) provides managed infrastructure for running agents in production with assistants, threads, and runs.

LangGraph publishes 6 API contracts indexed on the APIs.io network, including Agent Connections (v2) API, Auth Service (v2) API, Deployments (v2) API, and 3 more. Tagged areas include Agents, Artificial Intelligence, LLM, Workflows, and Orchestration.

The LangGraph catalog on APIs.io includes 1 Spectral governance ruleset.

LangGraph’s developer surface includes authentication, documentation, GitHub presence, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

34.2/100 thin ▬ flat Agent 27/100 agent aware Heartbeat 100/100 alive self hosted · MIT Full breakdown ↓
scored 2026-11-13 · rubric v0.28.0 · Show this score on your site →

AccessFreemiumSelf serve⚡ Free to try

1 published contract

Agents Artificial Intelligence LLM Workflows Orchestration

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Software Release & Deployment Management

BC-4210

Deployments (v2)

POST /v2/deployments POST /v2/deployments/{deployment_id}/revisions POST /v2/deployments/{deployment_id}/revisions/{revision_id}/redeploy

Kin Score

Kin Score How this is scored →
scored 2026-11-13 · rubric v0.28.0

Composite quality — 34.2/100 · thin

Contract Quality 8.5 / 16

Developer Ergonomics 3.1 / 13

Access Clarity 0.8 / 13

Operational Transparency 2.2 / 8

Contract Governance 1.1 / 8

Discoverability 4.3 / 7

Regulatory Posture 0.8 / 15

Open Source Surface 6.5 / 10

Create-or-Update Ergonomics 2.2 / 10

Agent readiness — 27/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

Open Source Surface applies to this provider. This product is open source and we read its repository directly, so Open Source Surface carries 10 points of the composite. It is scored from what the repository actually publishes — a security policy, a contribution guide, a release history, a code of conduct — read live from the provider rather than inferred from our own catalog pointers. This facet adds; nothing was taken away to make room for it. An open-source project is not excused from the commercial facets, because exemption would strip it of the points it does earn. If we have the wrong repository, or this product is not open source, say so on your provider repo and we will drop the facet rather than have you publish against it.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 65 points between them, because both conditional facets apply and carry 35 points together. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 65% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

Show this score on your site.

It updates itself when the score changes. Paste this where you link to your API docs:

<a href="https://apis.io/providers/langgraph/"><img src="https://apis.io/badge/langgraph/card.svg" alt="LangGraph on APIs.io — Kin Score by API Evangelist"></a>

Other styles, a README pill and a shields.io endpoint are on the badge page.

Raise your score.

Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship Ask about this →
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented) Ask about this →
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0 Ask about this →
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document Ask about this →
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented) Ask about this →
Typed Event Surface +6 pts — AsyncAPI document, OR webhooks/callbacks objects in the as-published OpenAPI, OR common[].type includes Webhooks Ask about this →

8 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 6.4 — up to +18.7 composite points Ask about this →
Developer Ergonomics scores 23.8 — up to +15.2 composite points Ask about this →
Contract Quality scores 52.2 — up to +12.0 composite points Ask about this →

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

Not sure how this applies to your stack? Ask about any one item. Kin Lane reads every question, looks at your profile and your situation, and replies with what a fix would take — scoped to that one area, priced up front, yours whether you ship it or not. Ask a question →

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from the provider profile at artifacts.apis.io/langgraph/apis.yml: open an issue on github.com/api-evangelist/langgraph to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Cloud Native (Kubernetes, CNCF, FinOps)	standard	17.2 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 6

Individual APIs this provider publishes, each with its own machine-readable definition.

LangGraph Agent Connections (v2) API

The Agent Connections (v2) API from LangGraph — 2 operation(s) for agent connections (v2).

LangGraph Auth Service (v2) API

The Auth Service (v2) API from LangGraph — 13 operation(s) for auth service (v2).

LangGraph Deployments (v2) API

The Deployments (v2) API from LangGraph — 5 operation(s) for deployments (v2).

LangGraph Integrations (v1) API

The Integrations (v1) API from LangGraph — 4 operation(s) for integrations (v1).

LangGraph Listeners (v2) API

The Listeners (v2) API from LangGraph — 2 operation(s) for listeners (v2).

LangGraph Integrations (v2) API

The Integrations (v2) API from LangGraph — 8 operation(s) for integrations (v2).

Open Collections 6

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

LangSmith Deployment Control Plane Agent Connections (v2) Agent Connections (v2) Agent Connections (v2) API

OPEN COLLECTION

LangSmith Deployment Control Plane Agent Connections (v2) Agent Connections (v2) Auth Service (v2) API

OPEN COLLECTION

LangSmith Deployment Control Plane Agent Connections (v2) Agent Connections (v2) Deployments (v2) API

OPEN COLLECTION

LangSmith Deployment Control Plane Agent Connections (v2) Agent Connections (v2) Integrations (v1) API

OPEN COLLECTION

LangSmith Deployment Control Plane Agent Connections (v2) Agent Connections (v2) Listeners (v2) API

OPEN COLLECTION

LangSmith Deployment Control Plane API

OPEN COLLECTION

LangGraph API pricing

Not yet checked against LangGraph's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against LangGraph's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

LangGraph Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

LangGraph Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

LangGraph Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs. Counts are the severity each rule declares, not results of running them.

LangGraph API Rules

52 rules · 37 error-severity 13 warn-severity 2 info-severity

SPECTRAL

Security Posture 2

Authentication, domain security, vulnerability disclosure, and trust-center signals.

LangGraph Authentication

apiKey · 1 scheme

SECURITY

LangGraph Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access (API Evangelist recommendations) 1

Recommended x-agentic-access execution contracts for AI agents.

LangGraph Agentic Access

61 operations · 28 acting · 1 human-in-the-loop

61 operations · 28 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

ContributionGuide

ContributionGuide

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

CodeOfConduct

CodeOfConduct

GitHub

GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

IssueTracker

IssueTracker

Releases

Releases

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

License

License

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

ParentCompany

ParentCompany

Source (apis.yml)

aid: langgraph
name: LangGraph
description: LangGraph is an open-source framework from LangChain for building stateful, multi-actor agent workflows with
  low-level primitives for greater control over agent behavior. LangGraph Platform (LangSmith Deployment) provides managed
  infrastructure for running agents in production with assistants, threads, and runs.
kind: contract
deliveryModel:
  model: self-hosted
  license: MIT
  open_source: true
  commercial: false
  callable_host: true
  label: Self-hosted open source · you run it yourself
  confidence: high
  source:
  - license
  - openapi
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-13'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/langgraph.png
x-docs-platform: mintlify
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
tags:
- Agents
- Artificial Intelligence
- LLM
- Workflows
- Orchestration
tags_raw:
- Agents
- Artificial Intelligence
- Large Language Models
- Workflows
- Orchestration
created: '2026-01-02'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/langgraph/refs/heads/main/apis.yml
specificationVersion: '0.23'
apis:
- aid: langgraph:langgraph-agent-connections-v2-api
  name: LangGraph Agent Connections (v2) API
  description: The Agent Connections (v2) API from LangGraph — 2 operation(s) for agent connections (v2).
  humanURL: https://docs.langchain.com/langgraph-platform
  baseURL: https://api.host.langchain.com
  tags:
  - Agent Connections (v2)
  properties:
  - type: OpenAPI
    url: openapi/langgraph-agent-connections-v2-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langgraph-platform
  - type: Repository
    url: https://github.com/langchain-ai/langgraph
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
- aid: langgraph:langgraph-auth-service-v2-api
  name: LangGraph Auth Service (v2) API
  description: The Auth Service (v2) API from LangGraph — 13 operation(s) for auth service (v2).
  humanURL: https://docs.langchain.com/langgraph-platform
  baseURL: https://api.host.langchain.com
  tags:
  - Auth Service (v2)
  properties:
  - type: OpenAPI
    url: openapi/langgraph-auth-service-v2-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langgraph-platform
  - type: Repository
    url: https://github.com/langchain-ai/langgraph
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
- aid: langgraph:langgraph-deployments-v2-api
  name: LangGraph Deployments (v2) API
  description: The Deployments (v2) API from LangGraph — 5 operation(s) for deployments (v2).
  humanURL: https://docs.langchain.com/langgraph-platform
  baseURL: https://api.host.langchain.com
  tags:
  - Deployments (v2)
  properties:
  - type: OpenAPI
    url: openapi/langgraph-deployments-v2-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langgraph-platform
  - type: Repository
    url: https://github.com/langchain-ai/langgraph
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
- aid: langgraph:langgraph-integrations-v1-api
  name: LangGraph Integrations (v1) API
  description: The Integrations (v1) API from LangGraph — 4 operation(s) for integrations (v1).
  humanURL: https://docs.langchain.com/langgraph-platform
  baseURL: https://api.host.langchain.com
  tags:
  - Integrations (v1)
  properties:
  - type: OpenAPI
    url: openapi/langgraph-integrations-v1-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langgraph-platform
  - type: Repository
    url: https://github.com/langchain-ai/langgraph
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
- aid: langgraph:langgraph-listeners-v2-api
  name: LangGraph Listeners (v2) API
  description: The Listeners (v2) API from LangGraph — 2 operation(s) for listeners (v2).
  humanURL: https://docs.langchain.com/langgraph-platform
  baseURL: https://api.host.langchain.com
  tags:
  - Listeners (v2)
  properties:
  - type: OpenAPI
    url: openapi/langgraph-listeners-v2-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langgraph-platform
  - type: Repository
    url: https://github.com/langchain-ai/langgraph
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
- aid: langgraph:langgraph-integrations-v2-api
  name: LangGraph Integrations (v2) API
  description: The Integrations (v2) API from LangGraph — 8 operation(s) for integrations (v2).
  humanURL: https://docs.langchain.com/langgraph-platform
  baseURL: https://api.host.langchain.com
  tags:
  - Integrations (v2)
  properties:
  - type: OpenAPI
    url: openapi/langgraph-integrations-v2-api-openapi.yml
common:
- type: Plans
  url: plans/langgraph-plans-pricing.yml
- type: RateLimits
  url: rate-limits/langgraph-rate-limits.yml
- type: FinOps
  url: finops/langgraph-finops.yml
- type: CapabilityMap
  url: capabilities/langgraph-capability-edges.yml
  name: LangGraph Business Capability Map
- type: IssueTracker
  url: https://github.com/langchain-ai/langgraph/issues
- type: Releases
  url: https://github.com/langchain-ai/langgraph/releases
- type: CodeOfConduct
  url: https://github.com/langchain-ai/.github/blob/main/CODE_OF_CONDUCT.md
- type: ContributionGuide
  url: https://github.com/langchain-ai/.github/blob/main/CONTRIBUTING.md
- type: License
  name: MIT
  url: https://github.com/langchain-ai/langgraph/blob/main/LICENSE
- type: AgenticAccess
  url: agentic-access/langgraph-agentic-access.yml
- type: DomainSecurity
  url: security/langgraph-domain-security.yml
- type: Authentication
  url: authentication/langgraph-authentication.yml
- name: LangGraph
  url: https://www.langchain.com/langgraph
  type: Website
- name: LangGraph Documentation
  url: https://docs.langchain.com/langgraph-platform
  type: Documentation
- name: LangGraph GitHub
  url: https://github.com/langchain-ai/langgraph
  type: GitHub
- name: LangChain
  url: https://www.langchain.com/
  type: ParentCompany
- type: Integrations
  url: https://docs.langchain.com/oss/python/integrations/providers/overview
- url: https://www.langchain.com/blog/rss.xml
  type: Blog
integrations:
- name: light
- name: dark
- name: Downloads per month
- name: PyPI - Latest version
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: langchain
x-relationship: product

LangGraph API — frequently asked questions

Does LangGraph have an API?

Yes. APIs.io lists 6 APIs from LangGraph, including LangGraph Agent Connections (v2) API, LangGraph Auth Service (v2) API and LangGraph Deployments (v2) API, and 3 more.

Is there an OpenAPI specification for the LangGraph API?

Yes. APIs.io indexes 6 OpenAPI specifications for LangGraph, each linked for download from this page.

How do I authenticate with the LangGraph API?

LangGraph uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as LangGraph Authentication.

How much does the LangGraph API cost?

APIs.io lists 3 pricing plans for LangGraph, with each plan's price, limits and inclusions under Pricing on this page.

Is the LangGraph API ready for AI agents?

LangGraph has a Kin Score of 34.2 out of 100 (thin) and an Agent Readiness score of 26.8 (agent-aware), scored by API Evangelist on 2026-11-13.

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/langgraph"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/langgraph/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/langgraph/evidence"

Calls without X-API-Key need no key. Calls with it need a paid plan — get a key.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.