LaunchDarkly

LaunchDarkly is a feature management and runtime control platform. Development teams use it to wrap releases in feature flags, target variations at specific users, contexts, segments and environments, run experiments and guarded rollouts, and turn a change back off without shipping new code. The platform now extends the same targeting, approval and audit machinery to AI through AgentControl, where prompts, models, tools and agent graphs are versioned and rolled out as configs, and to observability through session replay, errors, logs and traces. LaunchDarkly publishes a 401-operation REST API, more than thirty SDKs across thirteen client-side, thirteen server-side and four edge runtimes, a self-hosted Relay Proxy, a CLI, and a hosted MCP server exposing 125 tools to AI clients. LaunchDarkly is operated by Catamorphic Co.

LaunchDarkly publishes 29 APIs on the APIs.io network, including Webhooks API, Access Tokens API, Account Members API, and 26 more. Tagged areas include Feature Flags, Feature Management, Experimentation, Observability, and Continuous Delivery.

The LaunchDarkly catalog on APIs.io includes 1 event-driven AsyncAPI specification, 1 JSON-LD context, and 2 Spectral governance rulesets.

LaunchDarkly’s developer surface includes authentication, engineering blog, CLI, changelog, sandbox, documentation, API reference, and 43 more developer resources.

🌐 Visit website 📡 Source on GitHub

77.9/100 exemplar ▬ flat Agent 45/100 agent ready Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

3 APIs 1 MCP Servers 16 Features

Feature Flags Feature Management Experimentation Observability Continuous Delivery DevOps AI Agents Release Management Developer Tools T1

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 77.9/100 · exemplar

Contract Quality 16.8 / 23

Developer Ergonomics 14.5 / 18

Access Clarity 18.0 / 18

Operational Transparency 10.8 / 12

Contract Governance 3.4 / 11

Discoverability 7.3 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 45/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 6 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 7 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 6 / 6

Agentic Commerce Well-Known Document 0 / 5

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.

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 github.com/api-evangelist/launchdarkly: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 30

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

LaunchDarkly Webhooks API

The LaunchDarkly Webhooks API allows developers to build custom integrations that subscribe to activity events within LaunchDarkly. When actions occur such as flag changes, proj...

launchdarkly Access Tokens API

Create and manage personal and service access tokens used to authenticate API requests.

launchdarkly Account Members API

Manage team members, invitations, and member roles within a LaunchDarkly account.

launchdarkly Approvals API

Manage approval requests and workflows for flag changes that require review before deployment.

launchdarkly Audit Log API

Access the change history of all modifications made to resources in the LaunchDarkly account.

launchdarkly Client-Side Evaluation API

Flag evaluation endpoints for client-side and mobile SDKs using environment IDs or mobile keys for authentication.

launchdarkly Client-Side Streaming API

Server-Sent Events streaming endpoints for client-side and mobile SDKs to receive real-time flag updates.

launchdarkly Code References API

View code references that show where feature flags are used in your codebase.

launchdarkly Custom Roles API

Define custom roles with fine-grained permissions using resource specifiers and actions.

launchdarkly Environments API

Manage environments within projects such as production, staging, and development.

launchdarkly Experiments API

Create and manage experiments to measure the impact of feature flag variations on metrics.

launchdarkly Feature Flags API

Create, update, and manage feature flags and their targeting rules across projects and environments.

launchdarkly Flag Triggers API

Create triggers that allow external services to toggle feature flags via unique webhook URLs.

launchdarkly Integration Audit Log Subscriptions API

Manage integrations that subscribe to audit log events and forward them to external tools.

launchdarkly Metrics API

Define and manage metrics used to measure experiment outcomes and feature flag impact.

launchdarkly PHP Polling API

Polling endpoints for PHP server-side SDKs which do not support streaming mode.

launchdarkly Projects API

Manage projects that organize feature flags and other resources.

launchdarkly Relay Proxy Configurations API

Manage automatic configuration entries for LaunchDarkly Relay Proxy instances.

launchdarkly Releases API

Manage release pipelines for coordinating feature flag rollouts across environments.

launchdarkly Segments API

Create and manage user segments for targeting groups of contexts with feature flags.

launchdarkly Server-Side Evaluation API

Flag evaluation endpoints for server-side SDKs using SDK keys for authentication.

launchdarkly Server-Side Streaming API

Server-Sent Events streaming endpoints for server-side SDKs to receive real-time flag updates.

launchdarkly Status API

Health and status monitoring endpoints for the Relay Proxy. No authentication is required for these endpoints.

launchdarkly Tags API

The Tags API from launchdarkly — 1 operation(s) for tags.

launchdarkly Teams API

Organize account members into teams for collaborative flag management and permissions.

launchdarkly Webhooks API

Configure webhooks to receive HTTP POST notifications when changes occur in LaunchDarkly.

launchdarkly Workflows API

Create and manage automated workflows for scheduling and orchestrating flag changes.

LaunchDarkly MCP Server

LaunchDarkly operates a first-party hosted Model Context Protocol server at https://mcp.launchdarkly.com/mcp/launchdarkly, reachable by any MCP client over streamable HTTP and a...

LaunchDarkly Backup API

The Backup API from LaunchDarkly — 1 operation(s) for backup.

LaunchDarkly Debug Sessions API

The Debug Sessions API from LaunchDarkly — 3 operation(s) for debug sessions.

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Open Collections 29

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

API Collection

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Account Members API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Approvals API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Audit Log API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Client-Side Evaluation API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Client-Side Streaming API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Code References API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Custom Roles API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Environments API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Experiments API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Feature Flags API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Flag Triggers API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Integration Audit Log Subscriptions API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Metrics API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens PHP Polling API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Projects API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Relay Proxy Configurations API

OPEN COLLECTION

LaunchDarkly Relay Proxy

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Releases API

OPEN COLLECTION

LaunchDarkly REST API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Segments API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Server-Side Evaluation API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Server-Side Streaming API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Status API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Tags API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Teams API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Webhooks API

OPEN COLLECTION

LaunchDarkly Relay Proxy Access Tokens Workflows API

OPEN COLLECTION

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MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

LaunchDarkly MCP Server

LaunchDarkly operates a first-party hosted MCP server covering feature management, AgentControl and observability, and also publishes a local stdio server for the federal and EU...

MCP SERVER

GraphQL 1

GraphQL schemas published by this provider.

LaunchDarkly GraphQL Schema

LaunchDarkly does not publish a native GraphQL API. This is a conceptual GraphQL schema derived from the LaunchDarkly REST API (version 20240415) data model documented at https:...

GRAPHQL

Pricing Plans 1

Published pricing tiers and plan structures.

Launchdarkly Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Launchdarkly Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

Launchdarkly Finops

FINOPS

Features 16

Notable capabilities this provider offers.

Developer free: unlimited flags, seats, 30 SDKs, 5K replays, 10M logs

Foundation: $12/mo per Service Connection + $10 per 1k client MAU

Enterprise custom: SAML/SCIM, custom roles, release automation

Guardian custom: release monitoring, auto rollback, guardrails

REST API for projects, environments, flags, segments

Per-route rate limits + global 200 req/10s

Server-side, client-side, mobile SDKs (30+ languages)

Streaming SDK for real-time flag updates

Webhooks for flag and audit events

OAuth 2.0 + Personal API tokens + service accounts

Experimentation with statistical analysis

Code references (find flag usage in code)

Workflows with scheduling and approvals (Enterprise)

Release pipelines and progressive rollouts

Observability (Errors + Logs + Traces + Replays)

Galaxy AI features for flag governance

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Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

LaunchDarkly Webhooks Events

LaunchDarkly sends webhook notifications as HTTP POST requests when changes occur within the platform. The webhook payload format is identical to audit log entries and includes ...

ASYNCAPI

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Launchdarkly Context

0 classes · 15 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

LaunchDarkly API Rules

8 rules · 1 errors 6 warnings 1 info

SPECTRAL

LaunchDarkly API Rules

6 rules · 4 warnings 2 info

SPECTRAL

JSON Schema 70

Standalone JSON Schema definitions for this provider's data models.

AccessToken

10 properties

JSON SCHEMA

AccessTokenBody

5 properties

JSON SCHEMA

AccessTokens

2 properties

JSON SCHEMA

ApprovalRequest

6 properties

JSON SCHEMA

ApprovalRequestBody

4 properties

JSON SCHEMA

ApprovalRequests

2 properties

JSON SCHEMA

AuditLogEntries

2 properties

JSON SCHEMA

AuditLogEntry

9 properties

JSON SCHEMA

Clause

5 properties

JSON SCHEMA

CodeReferenceRepositories

1 properties

JSON SCHEMA

CustomRole

6 properties

JSON SCHEMA

CustomRoleBody

4 properties

JSON SCHEMA

CustomRoles

2 properties

JSON SCHEMA

Environment

10 properties

JSON SCHEMA

EnvironmentBody

6 properties

JSON SCHEMA

Environments

3 properties

JSON SCHEMA

EnvironmentStatus

8 properties

JSON SCHEMA

EvaluationContext

4 properties

JSON SCHEMA

Experiment

7 properties

JSON SCHEMA

ExperimentBody

4 properties

JSON SCHEMA

Experiments

3 properties

JSON SCHEMA

LaunchDarkly Feature Flag

14 properties

JSON SCHEMA

FeatureFlag

12 properties

JSON SCHEMA

FeatureFlagBody

8 properties

JSON SCHEMA

FeatureFlags

3 properties

JSON SCHEMA

FlagData

2 properties

JSON SCHEMA

FlagEnvironment

10 properties

JSON SCHEMA

FlagEvaluation

6 properties

JSON SCHEMA

FlagEvaluations

0 properties

JSON SCHEMA

FlagTrigger

6 properties

JSON SCHEMA

FlagTriggerBody

2 properties

JSON SCHEMA

FlagTriggers

2 properties

JSON SCHEMA

IntegrationSubscriptions

1 properties

JSON SCHEMA

Links

1 properties

JSON SCHEMA

Member

8 properties

JSON SCHEMA

MemberInviteBody

3 properties

JSON SCHEMA

Members

3 properties

JSON SCHEMA

MemberSummary

5 properties

JSON SCHEMA

Metric

8 properties

JSON SCHEMA

MetricBody

7 properties

JSON SCHEMA

Metrics

2 properties

JSON SCHEMA

PatchOperation

2 properties

JSON SCHEMA

Project

6 properties

JSON SCHEMA

ProjectBody

4 properties

JSON SCHEMA

Projects

3 properties

JSON SCHEMA

RelayProxyConfig

8 properties

JSON SCHEMA

RelayProxyConfigBody

2 properties

JSON SCHEMA

RelayProxyConfigs

1 properties

JSON SCHEMA

RelayProxyStatus

3 properties

JSON SCHEMA

ReleasePipeline

5 properties

JSON SCHEMA

ReleasePipelineBody

4 properties

JSON SCHEMA

ReleasePipelines

1 properties

JSON SCHEMA

Rollout

3 properties

JSON SCHEMA

Rule

5 properties

JSON SCHEMA

Segment

10 properties

JSON SCHEMA

SegmentBody

4 properties

JSON SCHEMA

SegmentRule

4 properties

JSON SCHEMA

Segments

3 properties

JSON SCHEMA

Statement

5 properties

JSON SCHEMA

TagCollection

2 properties

JSON SCHEMA

Target

3 properties

JSON SCHEMA

Team

7 properties

JSON SCHEMA

TeamBody

5 properties

JSON SCHEMA

Teams

3 properties

JSON SCHEMA

Variation

4 properties

JSON SCHEMA

LaunchDarkly Webhook Event

13 properties

JSON SCHEMA

Webhook

8 properties

JSON SCHEMA

WebhookBody

6 properties

JSON SCHEMA

Webhooks

2 properties

JSON SCHEMA

Workflows

1 properties

JSON SCHEMA

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JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Launchdarkly Structure

0 properties

JSON STRUCTURE

Security Posture 4

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

Launchdarkly Authentication

apiKey/oauth2 · 3 schemes

SECURITY

Launchdarkly Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Launchdarkly Vulnerability Disclosure

Hackerone

SECURITY

Launchdarkly Trust Center

SOC 2, ISO 27001, HIPAA, FedRAMP, GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Launchdarkly Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

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

Launchdarkly Agentic Access

58 operations · 25 acting

AGENTIC

Resources

Get Started 4

Portal, sign-up, and the first successful call

Sandbox

DeveloperPortal

GettingStarted

SignUp

Documentation 6

Reference material describing how the API behaves

JSONSchema

JSONSchema

OpenAPI

AsyncAPI

Documentation

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

LLMsTxt

WellKnown

MCPServer

AgentSkill

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

JSONLD

Conventions

Conformance

ErrorCatalog

Lifecycle

DataModel

Webhooks

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Build 6

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

ToolCrosswalk

SourceCode

Access & Security 7

Authentication, authorization, and security posture

TrustCenter

DomainSecurity

Authentication

Compliance

OAuthScopes

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

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Operate 5

Status, limits, changes, and where to get help

StatusPage

Deprecation

ChangeLog

RateLimits

Support

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 4

The organization behind the API

Website

Website

LinkedIn

Blog

Blog

Blog

Blog

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: launchdarkly
deliveryModel:
  model: unknown
  open_source: unknown
  commercial: true
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - openapi
  - pricing
  - repository-unlicensed
  generated: '2026-08-28'
  method: derived
specificationVersion: '0.23'
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
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/launchdarkly.png
url: https://raw.githubusercontent.com/api-evangelist/launchdarkly/refs/heads/main/apis.yml
apis:
- aid: launchdarkly:webhooks-api
  name: LaunchDarkly Webhooks API
  tags:
  - Event
  - Integration
  - Notification
  - Webhook
  tags_raw:
  - Events
  - Integrations
  - Notifications
  - Webhooks
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  baseURL: https://app.launchdarkly.com/api/v2
  humanURL: https://launchdarkly.com/docs/api/webhooks
  properties:
  - url: https://launchdarkly.com/docs/api/webhooks
    type: Documentation
  - type: AsyncAPI
    url: asyncapi/launchdarkly-webhooks-asyncapi.yml
  - type: Webhooks
    url: asyncapi/launchdarkly-webhooks-asyncapi.yml
  description: The LaunchDarkly Webhooks API allows developers to build custom integrations that subscribe to activity events
    within LaunchDarkly. When actions occur such as flag changes, project creation, or environment modifications, LaunchDarkly
    sends HTTP POST payloads to configured webhook URLs. This enables use cases like updating external issue trackers, notifying
    support systems of feature rollouts, and triggering downstream automation workflows based on feature flag lifecycle events.
- aid: launchdarkly:launchdarkly-access-tokens-api
  name: launchdarkly Access Tokens API
  description: Create and manage personal and service access tokens used to authenticate API requests.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Access Tokens
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-access-tokens-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-account-members-api
  name: launchdarkly Account Members API
  description: Manage team members, invitations, and member roles within a LaunchDarkly account.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Account Members
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-account-members-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-approvals-api
  name: launchdarkly Approvals API
  description: Manage approval requests and workflows for flag changes that require review before deployment.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Approvals
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-approvals-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-audit-log-api
  name: launchdarkly Audit Log API
  description: Access the change history of all modifications made to resources in the LaunchDarkly account.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Audit Log
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-audit-log-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-client-side-evaluation-api
  name: launchdarkly Client-Side Evaluation API
  description: Flag evaluation endpoints for client-side and mobile SDKs using environment IDs or mobile keys for authentication.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Client-Side Evaluation
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-client-side-evaluation-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-client-side-streaming-api
  name: launchdarkly Client-Side Streaming API
  description: Server-Sent Events streaming endpoints for client-side and mobile SDKs to receive real-time flag updates.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Client-Side Streaming
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-client-side-streaming-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-code-references-api
  name: launchdarkly Code References API
  description: View code references that show where feature flags are used in your codebase.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Code References
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-code-references-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-custom-roles-api
  name: launchdarkly Custom Roles API
  description: Define custom roles with fine-grained permissions using resource specifiers and actions.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Custom Roles
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-custom-roles-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-environments-api
  name: launchdarkly Environments API
  description: Manage environments within projects such as production, staging, and development.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Environments
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-environments-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-experiments-api
  name: launchdarkly Experiments API
  description: Create and manage experiments to measure the impact of feature flag variations on metrics.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Experiments
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-experiments-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-feature-flags-api
  name: launchdarkly Feature Flags API
  description: Create, update, and manage feature flags and their targeting rules across projects and environments.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Feature Flags
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-feature-flags-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-flag-triggers-api
  name: launchdarkly Flag Triggers API
  description: Create triggers that allow external services to toggle feature flags via unique webhook URLs.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Flag Triggers
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-flag-triggers-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-integration-audit-log-subscriptions-api
  name: launchdarkly Integration Audit Log Subscriptions API
  description: Manage integrations that subscribe to audit log events and forward them to external tools.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Integration Audit Log Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-integration-audit-log-subscriptions-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-metrics-api
  name: launchdarkly Metrics API
  description: Define and manage metrics used to measure experiment outcomes and feature flag impact.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Metrics
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-metrics-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-php-polling-api
  name: launchdarkly PHP Polling API
  description: Polling endpoints for PHP server-side SDKs which do not support streaming mode.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - PHP Polling
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-php-polling-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-projects-api
  name: launchdarkly Projects API
  description: Manage projects that organize feature flags and other resources.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Project
  tags_raw:
  - Projects
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-projects-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-relay-proxy-configurations-api
  name: launchdarkly Relay Proxy Configurations API
  description: Manage automatic configuration entries for LaunchDarkly Relay Proxy instances.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Relay Proxy Configurations
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-relay-proxy-configurations-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-releases-api
  name: launchdarkly Releases API
  description: Manage release pipelines for coordinating feature flag rollouts across environments.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Releases
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-releases-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-segments-api
  name: launchdarkly Segments API
  description: Create and manage user segments for targeting groups of contexts with feature flags.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Segments
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-segments-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-server-side-evaluation-api
  name: launchdarkly Server-Side Evaluation API
  description: Flag evaluation endpoints for server-side SDKs using SDK keys for authentication.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Server-Side Evaluation
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-server-side-evaluation-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-server-side-streaming-api
  name: launchdarkly Server-Side Streaming API
  description: Server-Sent Events streaming endpoints for server-side SDKs to receive real-time flag updates.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Server-Side Streaming
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-server-side-streaming-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-status-api
  name: launchdarkly Status API
  description: Health and status monitoring endpoints for the Relay Proxy. No authentication is required for these endpoints.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Status
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-status-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-tags-api
  name: launchdarkly Tags API
  description: The Tags API from launchdarkly — 1 operation(s) for tags.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Tags
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-tags-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-teams-api
  name: launchdarkly Teams API
  description: Organize account members into teams for collaborative flag management and permissions.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Team
  tags_raw:
  - Teams
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-teams-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-webhooks-api
  name: launchdarkly Webhooks API
  description: Configure webhooks to receive HTTP POST notifications when changes occur in LaunchDarkly.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Webhook
  tags_raw:
  - Webhooks
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-webhooks-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-workflows-api
  name: launchdarkly Workflows API
  description: Create and manage automated workflows for scheduling and orchestrating flag changes.
  humanURL: https://launchdarkly.com/docs/api
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Workflows
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-workflows-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/api
  - type: Documentation
    url: https://launchdarkly.com/docs/sdk/relay-proxy
- aid: launchdarkly:launchdarkly-mcp-server
  name: LaunchDarkly MCP Server
  description: LaunchDarkly operates a first-party hosted Model Context Protocol server at https://mcp.launchdarkly.com/mcp/launchdarkly,
    reachable by any MCP client over streamable HTTP and authorized with OAuth 2.0 (dynamic client registration, PKCE). It
    exposes 125 tools across feature management, AgentControl, experimentation, metrics and observability, each carrying MCP
    annotations that declare whether it is read-only, idempotent or destructive. A stdio server is also published to npm as
    @launchdarkly/mcp-server for the federal and EU instances, where the hosted server is not available.
  humanURL: https://launchdarkly.com/docs/home/getting-started/mcp
  baseURL: https://mcp.launchdarkly.com/mcp/launchdarkly
  tags:
  - MCP
  - AI Agents
  - Feature Flags
  - Tools
  properties:
  - type: MCPServer
    url: mcp/launchdarkly-mcp.yml
  - type: ToolCrosswalk
    url: mcp/launchdarkly-tool-crosswalk.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/home/getting-started/mcp
  - type: Documentation
    url: https://launchdarkly.com/docs/home/getting-started/mcp-hosted
  - type: Authentication
    url: authentication/launchdarkly-authentication.yml
  - type: OAuthScopes
    url: scopes/launchdarkly-scopes.yml
- aid: launchdarkly:launchdarkly-backup-api
  name: LaunchDarkly Backup API
  description: The Backup API from LaunchDarkly — 1 operation(s) for backup.
  humanURL: https://launchdarkly.com/docs/api/webhooks
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Backup
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-backup-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/guides/flags/ldcli-dev-server-reference
  - type: Sandbox
    url: sandbox/launchdarkly-sandbox.yml
  - type: SourceCode
    url: https://github.com/launchdarkly/ldcli
- aid: launchdarkly:launchdarkly-debug-sessions-api
  name: LaunchDarkly Debug Sessions API
  description: The Debug Sessions API from LaunchDarkly — 3 operation(s) for debug sessions.
  humanURL: https://launchdarkly.com/docs/api/webhooks
  baseURL: https://app.launchdarkly.com/api/v2
  tags:
  - Debug Sessions
  properties:
  - type: OpenAPI
    url: openapi/launchdarkly-debug-sessions-api-openapi.yml
  - type: Documentation
    url: https://launchdarkly.com/docs/guides/flags/ldcli-dev-server-reference
  - type: Sandbox
    url: sandbox/launchdarkly-sandbox.yml
  - type: SourceCode
    url: https://github.com/launchdarkly/ldcli
common:
- type: Website
  url: https://www.launchdarkly.com/
- type: CapabilityMap
  url: capabilities/launchdarkly-capability-edges.yml
  name: LaunchDarkly Business Capability Map
- type: TrustCenter
  url: security/launchdarkly-trust-center.yml
- type: AgenticAccess
  url: agentic-access/launchdarkly-agentic-access.yml
- type: DomainSecurity
  url: security/launchdarkly-domain-security.yml
- type: Authentication
  url: authentication/launchdarkly-authentication.yml
- type: GitHubOrganization
  url: https://github.com/launchdarkly
- type: LinkedIn
  url: https://www.linkedin.com/company/launchdarkly
- type: JSONSchema
  url: json-schema/launchdarkly-feature-flag-schema.json
- type: JSONSchema
  url: json-schema/launchdarkly-webhook-event-schema.json
- type: JSONLD
  url: json-ld/launchdarkly-context.jsonld
- type: Blog
  url: https://launchdarkly.com/blog/feed/
- type: Features
  data:
  - 'Developer free: unlimited flags, seats, 30 SDKs, 5K replays, 10M logs'
  - 'Foundation: $12/mo per Service Connection + $10 per 1k client MAU'
  - 'Enterprise custom: SAML/SCIM, custom roles, release automation'
  - 'Guardian custom: release monitoring, auto rollback, guardrails'
  - REST API for projects, environments, flags, segments
  - Per-route rate limits + global 200 req/10s
  - Server-side, client-side, mobile SDKs (30+ languages)
  - Streaming SDK for real-time flag updates
  - Webhooks for flag and audit events
  - OAuth 2.0 + Personal API tokens + service accounts
  - Experimentation with statistical analysis
  - Code references (find flag usage in code)
  - Workflows with scheduling and approvals (Enterprise)
  - Release pipelines and progressive rollouts
  - Observability (Errors + Logs + Traces + Replays)
  - Galaxy AI features for flag governance
  sources:
  - https://launchdarkly.com/pricing/
  updated: '2026-05-04'
- type: OpenAPI
  url: openapi/launchdarkly-rest-api-openapi.json
- type: LLMsTxt
  url: llms/launchdarkly-llms.txt
- type: Packages
  url: packages/launchdarkly-packages.yml
- type: SDKs
  url: packages/launchdarkly-packages.yml
- type: CLI
  url: cli/launchdarkly-cli.yml
- type: WellKnown
  url: well-known/launchdarkly-well-known.yml
- type: MCPServer
  url: mcp/launchdarkly-mcp.yml
- type: ToolCrosswalk
  url: mcp/launchdarkly-tool-crosswalk.yml
- type: Conventions
  url: conventions/launchdarkly-conventions.yml
- type: Conformance
  url: conformance/launchdarkly-conformance.yml
- type: Compliance
  url: conformance/launchdarkly-conformance.yml
- type: ErrorCatalog
  url: errors/launchdarkly-problem-types.yml
- type: Lifecycle
  url: lifecycle/launchdarkly-lifecycle.yml
- type: StatusPage
  url: https://status.launchdarkly.com/
- type: Deprecation
  url: https://launchdarkly.com/policies/end-of-life-policy/
- type: OAuthScopes
  url: scopes/launchdarkly-scopes.yml
- type: DataModel
  url: data-model/launchdarkly-data-model.yml
- type: ChangeLog
  url: changelog/launchdarkly-changelog.yml
- type: Sandbox
  url: sandbox/launchdarkly-sandbox.yml
- type: AgentSkill
  url: skills/_index.yml
- type: Overlay
  url: overlays/launchdarkly-rest-api-overlay.yaml
- type: Webhooks
  url: asyncapi/launchdarkly-webhooks-asyncapi.yml
- type: AsyncAPI
  url: asyncapi/launchdarkly-webhooks-asyncapi.yml
- type: Plans
  url: plans/launchdarkly-plans-pricing.yml
- type: RateLimits
  url: rate-limits/launchdarkly-rate-limits.yml
- type: DeveloperPortal
  url: https://launchdarkly.com/docs/home
- type: Documentation
  url: https://launchdarkly.com/docs/home
- type: APIReference
  url: https://launchdarkly.com/docs/api
- type: GettingStarted
  url: https://launchdarkly.com/docs/home/getting-started
- type: Support
  url: https://support.launchdarkly.com/
- type: Pricing
  url: https://launchdarkly.com/pricing/
- type: SignUp
  url: https://app.launchdarkly.com/signup
- type: TermsOfService
  url: https://launchdarkly.com/policies/
- type: PrivacyPolicy
  url: https://launchdarkly.com/privacy/
- type: Blog
  url: https://launchdarkly.com/blog/
- type: SourceCode
  url: https://github.com/launchdarkly/ldcli
- type: VulnerabilityDisclosure
  url: security/launchdarkly-vulnerability-disclosure.yml
- type: Security
  url: security/launchdarkly-vulnerability-disclosure.yml
modified: '2026-08-27'
description: LaunchDarkly is a feature management and runtime control platform. Development teams use it to wrap releases
  in feature flags, target variations at specific users, contexts, segments and environments, run experiments and guarded
  rollouts, and turn a change back off without shipping new code. The platform now extends the same targeting, approval and
  audit machinery to AI through AgentControl, where prompts, models, tools and agent graphs are versioned and rolled out as
  configs, and to observability through session replay, errors, logs and traces. LaunchDarkly publishes a 401-operation REST
  API, more than thirty SDKs across thirteen client-side, thirteen server-side and four edge runtimes, a self-hosted Relay
  Proxy, a CLI, and a hosted MCP server exposing 125 tools to AI clients. LaunchDarkly is operated by Catamorphic Co.
name: LaunchDarkly
tags:
- Feature Flags
- Feature Management
- Experimentation
- Observability
- Continuous Delivery
- DevOps
- AI Agents
- Release Management
- Developer Tools
- T1
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
  url: http://apievangelist.com
- FN: APIs.json
  email: info@apis.io
- FN: LaunchDarkly
  email: support@launchdarkly.com
  url: https://launchdarkly.com
created: 2024/04/14
x-enrichment:
  date: '2026-08-27'
  status: enriched
  artifacts_added: 25
  pass: local-v1

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