LangChain website screenshot

LangChain

LangChain is a comprehensive ecosystem for building and deploying AI agents, consisting of open-source frameworks and an agent engineering platform called LangSmith. The company offers two main frameworks: LangChain, which enables rapid development with pre-built agent architectures and model integrations, and LangGraph, which provides low-level primitives for building custom agent workflows with greater control.

LangChain publishes 66 APIs on the APIs.io network, including access_policies API, ace API, alert_rules API, and 63 more. Tagged areas include Agents, Artificial Intelligence, Large Language Models, LLM Observability, and Tracing.

LangChain’s developer surface includes authentication, engineering blog, documentation, changelog, pricing, support, GitHub presence, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
42.5/100 developing ▬ flat Agent 41/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
66 APIs
AgentsArtificial IntelligenceLarge Language ModelsLLM ObservabilityTracingEvaluation

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 42.5/100 · developing
Contract Quality 13.6 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 10.0 / 20
Operational Transparency 6.8 / 13
Governance 0.0 / 12
Discoverability 6.9 / 10
Agent readiness — 41/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/langchain: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 66

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

LangChain access_policies API

The access_policies API from LangChain — 3 operation(s) for access_policies.

LangChain ace API

The ace API from LangChain — 1 operation(s) for ace.

LangChain alert_rules API

The alert_rules API from LangChain — 3 operation(s) for alert_rules.

LangChain annotation-queues API

The annotation-queues API from LangChain — 17 operation(s) for annotation-queues.

LangChain api-key API

The api-key API from LangChain — 4 operation(s) for api-key.

LangChain audit-logs API

The audit-logs API from LangChain — 1 operation(s) for audit-logs.

LangChain auth API

The auth API from LangChain — 7 operation(s) for auth.

LangChain aws_marketplace API

The aws_marketplace API from LangChain — 1 operation(s) for aws_marketplace.

LangChain backfills API

The backfills API from LangChain — 1 operation(s) for backfills.

LangChain beacon API

The beacon API from LangChain — 1 operation(s) for beacon.

LangChain bulk-exports API

The bulk-exports API from LangChain — 7 operation(s) for bulk-exports.

LangChain charts API

The charts API from LangChain — 13 operation(s) for charts.

LangChain comments API

The comments API from LangChain — 3 operation(s) for comments.

LangChain commits API

The commits API from LangChain — 2 operation(s) for commits.

LangChain data_planes API

The data_planes API from LangChain — 1 operation(s) for data_planes.

LangChain datasets API

The datasets API from LangChain — 28 operation(s) for datasets.

LangChain evaluators API

The evaluators API from LangChain — 2 operation(s) for evaluators.

LangChain examples API

The examples API from LangChain — 9 operation(s) for examples.

LangChain experiment-view-overrides API

The experiment-view-overrides API from LangChain — 2 operation(s) for experiment-view-overrides.

LangChain experiments API

The experiments API from LangChain — 1 operation(s) for experiments.

LangChain features API

The features API from LangChain — 4 operation(s) for features.

LangChain feedback API

The feedback API from LangChain — 7 operation(s) for feedback.

LangChain feedback-configs API

The feedback-configs API from LangChain — 1 operation(s) for feedback-configs.

LangChain fleet github-app API

The fleet github-app API from LangChain — 9 operation(s) for fleet github-app.

LangChain fleet integrations API

The fleet integrations API from LangChain — 3 operation(s) for fleet integrations.

LangChain fleet mcp API

The fleet mcp API from LangChain — 4 operation(s) for fleet mcp.

LangChain fleet usage API

The fleet usage API from LangChain — 4 operation(s) for fleet usage.

LangChain fleet_webhooks API

The fleet_webhooks API from LangChain — 1 operation(s) for fleet_webhooks.

LangChain hub_environments API

The hub_environments API from LangChain — 2 operation(s) for hub_environments.

LangChain info API

The info API from LangChain — 2 operation(s) for info.

LangChain integrations API

The integrations API from LangChain — 1 operation(s) for integrations.

LangChain likes API

The likes API from LangChain — 1 operation(s) for likes.

LangChain mcp API

The mcp API from LangChain — 2 operation(s) for mcp.

LangChain mcp_vendors API

The mcp_vendors API from LangChain — 6 operation(s) for mcp_vendors.

LangChain me API

The me API from LangChain — 4 operation(s) for me.

LangChain metrics API

The metrics API from LangChain — 1 operation(s) for metrics.

LangChain model-price-map API

The model-price-map API from LangChain — 2 operation(s) for model-price-map.

LangChain nps API

The nps API from LangChain — 1 operation(s) for nps.

LangChain oauth API

The oauth API from LangChain — 7 operation(s) for oauth.

LangChain Ok API

The Ok API from LangChain — 1 operation(s) for ok.

LangChain optimization-jobs API

The optimization-jobs API from LangChain — 4 operation(s) for optimization-jobs.

LangChain Organizations API

The Organizations API from LangChain — 1 operation(s) for organizations.

LangChain orgs API

The orgs API from LangChain — 39 operation(s) for orgs.

LangChain ownerships API

The ownerships API from LangChain — 1 operation(s) for ownerships.

LangChain playground-settings API

The playground-settings API from LangChain — 2 operation(s) for playground-settings.

LangChain prompt-webhooks API

The prompt-webhooks API from LangChain — 3 operation(s) for prompt-webhooks.

LangChain prompts API

The prompts API from LangChain — 2 operation(s) for prompts.

LangChain public API

The public API from LangChain — 20 operation(s) for public.

LangChain repos API

The repos API from LangChain — 5 operation(s) for repos.

LangChain run API

The run API from LangChain — 19 operation(s) for run.

LangChain runs API

The runs API from LangChain — 7 operation(s) for runs.

LangChain sandboxes API

The sandboxes API from LangChain — 11 operation(s) for sandboxes.

LangChain sandboxes-internal API

The sandboxes-internal API from LangChain — 1 operation(s) for sandboxes-internal.

LangChain SCIM Tokens API

The SCIM Tokens API from LangChain — 2 operation(s) for scim tokens.

LangChain service-accounts API

The service-accounts API from LangChain — 2 operation(s) for service-accounts.

LangChain sessions API

The sessions API from LangChain — 1 operation(s) for sessions.

LangChain settings API

The settings API from LangChain — 2 operation(s) for settings.

LangChain tag-transitions API

The tag-transitions API from LangChain — 1 operation(s) for tag-transitions.

LangChain tags API

The tags API from LangChain — 2 operation(s) for tags.

LangChain tenant API

The tenant API from LangChain — 1 operation(s) for tenant.

LangChain threads API

The threads API from LangChain — 2 operation(s) for threads.

LangChain tools API

The tools API from LangChain — 3 operation(s) for tools.

LangChain tracer-sessions API

The tracer-sessions API from LangChain — 14 operation(s) for tracer-sessions.

LangChain TTL Settings API

The TTL Settings API from LangChain — 2 operation(s) for ttl settings.

LangChain usage-limits API

The usage-limits API from LangChain — 3 operation(s) for usage-limits.

LangChain workspaces API

The workspaces API from LangChain — 25 operation(s) for workspaces.

Scroll for all 66

Open Collections 1

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

LangSmith

OPEN COLLECTION

GraphQL 1

GraphQL schemas published by this provider.

LangChain GraphQL API

LangChain is a framework for building LLM applications. The LangSmith API (the hosted platform) covers trace management, feedback collection, dataset management, evaluation runs...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Langchain Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Langchain Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Langchain Finops

FINOPS

Security Posture 2

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

Langchain Authentication

apiKey/http · 4 schemes

SECURITY

Langchain Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Langchain Agentic Access

506 operations · 309 acting · 8 human-in-the-loop

506 operations · 309 acting

AGENTIC

Resources

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 Guide
Guide

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 AgentSkills
AgentSkills
 LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHub
GitHub

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

ChangeLog
ChangeLog
 Support
Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

CaseStudies
CaseStudies

Source (apis.yml)

apis.yml Raw ↑ 
aid: langchain
name: LangChain
description: 'LangChain is a comprehensive ecosystem for building and deploying AI agents, consisting of open-source frameworks
  and an agent engineering platform called LangSmith. The company offers two main frameworks: LangChain, which enables rapid
  development with pre-built agent architectures and model integrations, and LangGraph, which provides low-level primitives
  for building custom agent workflows with greater control.'
kind: contract
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/langchain.png
tags:
- Agents
- Artificial Intelligence
- Large Language Models
- LLM Observability
- Tracing
- Evaluation
created: '2026-01-02'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/langchain/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
- aid: langchain:langchain-access-policies-api
  name: LangChain access_policies API
  description: The access_policies API from LangChain — 3 operation(s) for access_policies.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - access_policies
  properties:
  - type: OpenAPI
    url: openapi/langchain-access-policies-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-ace-api
  name: LangChain ace API
  description: The ace API from LangChain — 1 operation(s) for ace.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - ace
  properties:
  - type: OpenAPI
    url: openapi/langchain-ace-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-alert-rules-api
  name: LangChain alert_rules API
  description: The alert_rules API from LangChain — 3 operation(s) for alert_rules.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - alert_rules
  properties:
  - type: OpenAPI
    url: openapi/langchain-alert-rules-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-annotation-queues-api
  name: LangChain annotation-queues API
  description: The annotation-queues API from LangChain — 17 operation(s) for annotation-queues.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - annotation-queues
  properties:
  - type: OpenAPI
    url: openapi/langchain-annotation-queues-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-api-key-api
  name: LangChain api-key API
  description: The api-key API from LangChain — 4 operation(s) for api-key.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - api-key
  properties:
  - type: OpenAPI
    url: openapi/langchain-api-key-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-audit-logs-api
  name: LangChain audit-logs API
  description: The audit-logs API from LangChain — 1 operation(s) for audit-logs.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - audit-logs
  properties:
  - type: OpenAPI
    url: openapi/langchain-audit-logs-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-auth-api
  name: LangChain auth API
  description: The auth API from LangChain — 7 operation(s) for auth.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - auth
  properties:
  - type: OpenAPI
    url: openapi/langchain-auth-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-aws-marketplace-api
  name: LangChain aws_marketplace API
  description: The aws_marketplace API from LangChain — 1 operation(s) for aws_marketplace.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - aws_marketplace
  properties:
  - type: OpenAPI
    url: openapi/langchain-aws-marketplace-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-backfills-api
  name: LangChain backfills API
  description: The backfills API from LangChain — 1 operation(s) for backfills.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - backfills
  properties:
  - type: OpenAPI
    url: openapi/langchain-backfills-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-beacon-api
  name: LangChain beacon API
  description: The beacon API from LangChain — 1 operation(s) for beacon.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - beacon
  properties:
  - type: OpenAPI
    url: openapi/langchain-beacon-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-bulk-exports-api
  name: LangChain bulk-exports API
  description: The bulk-exports API from LangChain — 7 operation(s) for bulk-exports.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - bulk-exports
  properties:
  - type: OpenAPI
    url: openapi/langchain-bulk-exports-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-charts-api
  name: LangChain charts API
  description: The charts API from LangChain — 13 operation(s) for charts.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - charts
  properties:
  - type: OpenAPI
    url: openapi/langchain-charts-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-comments-api
  name: LangChain comments API
  description: The comments API from LangChain — 3 operation(s) for comments.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - comments
  properties:
  - type: OpenAPI
    url: openapi/langchain-comments-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-commits-api
  name: LangChain commits API
  description: The commits API from LangChain — 2 operation(s) for commits.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - commits
  properties:
  - type: OpenAPI
    url: openapi/langchain-commits-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-data-planes-api
  name: LangChain data_planes API
  description: The data_planes API from LangChain — 1 operation(s) for data_planes.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - data_planes
  properties:
  - type: OpenAPI
    url: openapi/langchain-data-planes-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-datasets-api
  name: LangChain datasets API
  description: The datasets API from LangChain — 28 operation(s) for datasets.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - datasets
  properties:
  - type: OpenAPI
    url: openapi/langchain-datasets-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-evaluators-api
  name: LangChain evaluators API
  description: The evaluators API from LangChain — 2 operation(s) for evaluators.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - evaluators
  properties:
  - type: OpenAPI
    url: openapi/langchain-evaluators-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-examples-api
  name: LangChain examples API
  description: The examples API from LangChain — 9 operation(s) for examples.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - examples
  properties:
  - type: OpenAPI
    url: openapi/langchain-examples-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-experiment-view-overrides-api
  name: LangChain experiment-view-overrides API
  description: The experiment-view-overrides API from LangChain — 2 operation(s) for experiment-view-overrides.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - experiment-view-overrides
  properties:
  - type: OpenAPI
    url: openapi/langchain-experiment-view-overrides-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-experiments-api
  name: LangChain experiments API
  description: The experiments API from LangChain — 1 operation(s) for experiments.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - experiments
  properties:
  - type: OpenAPI
    url: openapi/langchain-experiments-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-features-api
  name: LangChain features API
  description: The features API from LangChain — 4 operation(s) for features.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - features
  properties:
  - type: OpenAPI
    url: openapi/langchain-features-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-feedback-api
  name: LangChain feedback API
  description: The feedback API from LangChain — 7 operation(s) for feedback.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - feedback
  properties:
  - type: OpenAPI
    url: openapi/langchain-feedback-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-feedback-configs-api
  name: LangChain feedback-configs API
  description: The feedback-configs API from LangChain — 1 operation(s) for feedback-configs.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - feedback-configs
  properties:
  - type: OpenAPI
    url: openapi/langchain-feedback-configs-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-fleet-github-app-api
  name: LangChain fleet github-app API
  description: The fleet github-app API from LangChain — 9 operation(s) for fleet github-app.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - fleet github-app
  properties:
  - type: OpenAPI
    url: openapi/langchain-fleet-github-app-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-fleet-integrations-api
  name: LangChain fleet integrations API
  description: The fleet integrations API from LangChain — 3 operation(s) for fleet integrations.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - fleet integrations
  properties:
  - type: OpenAPI
    url: openapi/langchain-fleet-integrations-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-fleet-mcp-api
  name: LangChain fleet mcp API
  description: The fleet mcp API from LangChain — 4 operation(s) for fleet mcp.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - fleet mcp
  properties:
  - type: OpenAPI
    url: openapi/langchain-fleet-mcp-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-fleet-usage-api
  name: LangChain fleet usage API
  description: The fleet usage API from LangChain — 4 operation(s) for fleet usage.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - fleet usage
  properties:
  - type: OpenAPI
    url: openapi/langchain-fleet-usage-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-fleet-webhooks-api
  name: LangChain fleet_webhooks API
  description: The fleet_webhooks API from LangChain — 1 operation(s) for fleet_webhooks.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - fleet_webhooks
  properties:
  - type: OpenAPI
    url: openapi/langchain-fleet-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-hub-environments-api
  name: LangChain hub_environments API
  description: The hub_environments API from LangChain — 2 operation(s) for hub_environments.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - hub_environments
  properties:
  - type: OpenAPI
    url: openapi/langchain-hub-environments-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-info-api
  name: LangChain info API
  description: The info API from LangChain — 2 operation(s) for info.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - info
  properties:
  - type: OpenAPI
    url: openapi/langchain-info-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-integrations-api
  name: LangChain integrations API
  description: The integrations API from LangChain — 1 operation(s) for integrations.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - integrations
  properties:
  - type: OpenAPI
    url: openapi/langchain-integrations-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-likes-api
  name: LangChain likes API
  description: The likes API from LangChain — 1 operation(s) for likes.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - likes
  properties:
  - type: OpenAPI
    url: openapi/langchain-likes-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-mcp-api
  name: LangChain mcp API
  description: The mcp API from LangChain — 2 operation(s) for mcp.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - mcp
  properties:
  - type: OpenAPI
    url: openapi/langchain-mcp-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-mcp-vendors-api
  name: LangChain mcp_vendors API
  description: The mcp_vendors API from LangChain — 6 operation(s) for mcp_vendors.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - mcp_vendors
  properties:
  - type: OpenAPI
    url: openapi/langchain-mcp-vendors-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-me-api
  name: LangChain me API
  description: The me API from LangChain — 4 operation(s) for me.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - me
  properties:
  - type: OpenAPI
    url: openapi/langchain-me-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-metrics-api
  name: LangChain metrics API
  description: The metrics API from LangChain — 1 operation(s) for metrics.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - metrics
  properties:
  - type: OpenAPI
    url: openapi/langchain-metrics-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-model-price-map-api
  name: LangChain model-price-map API
  description: The model-price-map API from LangChain — 2 operation(s) for model-price-map.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - model-price-map
  properties:
  - type: OpenAPI
    url: openapi/langchain-model-price-map-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-nps-api
  name: LangChain nps API
  description: The nps API from LangChain — 1 operation(s) for nps.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - nps
  properties:
  - type: OpenAPI
    url: openapi/langchain-nps-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-oauth-api
  name: LangChain oauth API
  description: The oauth API from LangChain — 7 operation(s) for oauth.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - oauth
  properties:
  - type: OpenAPI
    url: openapi/langchain-oauth-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-ok-api
  name: LangChain Ok API
  description: The Ok API from LangChain — 1 operation(s) for ok.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - Ok
  properties:
  - type: OpenAPI
    url: openapi/langchain-ok-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-optimization-jobs-api
  name: LangChain optimization-jobs API
  description: The optimization-jobs API from LangChain — 4 operation(s) for optimization-jobs.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - optimization-jobs
  properties:
  - type: OpenAPI
    url: openapi/langchain-optimization-jobs-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-organizations-api
  name: LangChain Organizations API
  description: The Organizations API from LangChain — 1 operation(s) for organizations.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/langchain-organizations-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-orgs-api
  name: LangChain orgs API
  description: The orgs API from LangChain — 39 operation(s) for orgs.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - orgs
  properties:
  - type: OpenAPI
    url: openapi/langchain-orgs-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-ownerships-api
  name: LangChain ownerships API
  description: The ownerships API from LangChain — 1 operation(s) for ownerships.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - ownerships
  properties:
  - type: OpenAPI
    url: openapi/langchain-ownerships-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-playground-settings-api
  name: LangChain playground-settings API
  description: The playground-settings API from LangChain — 2 operation(s) for playground-settings.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - playground-settings
  properties:
  - type: OpenAPI
    url: openapi/langchain-playground-settings-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-prompt-webhooks-api
  name: LangChain prompt-webhooks API
  description: The prompt-webhooks API from LangChain — 3 operation(s) for prompt-webhooks.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - prompt-webhooks
  properties:
  - type: OpenAPI
    url: openapi/langchain-prompt-webhooks-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-prompts-api
  name: LangChain prompts API
  description: The prompts API from LangChain — 2 operation(s) for prompts.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - prompts
  properties:
  - type: OpenAPI
    url: openapi/langchain-prompts-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-public-api
  name: LangChain public API
  description: The public API from LangChain — 20 operation(s) for public.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - public
  properties:
  - type: OpenAPI
    url: openapi/langchain-public-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-repos-api
  name: LangChain repos API
  description: The repos API from LangChain — 5 operation(s) for repos.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - repos
  properties:
  - type: OpenAPI
    url: openapi/langchain-repos-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL
    url: graphql/langchain-graphql.md
- aid: langchain:langchain-run-api
  name: LangChain run API
  description: The run API from LangChain — 19 operation(s) for run.
  humanURL: https://docs.langchain.com/langsmith
  baseURL: https://api.smith.langchain.com
  tags:
  - run
  properties:
  - type: OpenAPI
    url: openapi/langchain-run-api-openapi.yml
  - type: Documentation
    url: https://docs.langchain.com/langsmith
  - type: Signup
    url: https://smith.langchain.com/
  - type: Authentication
    url: https://docs.langchain.com/langsmith/create-account-api-key
  - type: GraphQL

# --- truncated at 32 KB (43 KB total) ---
# Full source: https://raw.githubusercontent.com/api-evangelist/langchain/refs/heads/main/apis.yml