Etcd

etcd is a CNCF graduated distributed, reliable key-value store used as the backing store for all Kubernetes cluster data. It provides strong consistency guarantees using the Raft consensus algorithm, supporting watch operations, lease-based TTLs, and atomic compare-and-swap transactions. etcd is designed for high availability and stores critical configuration data for distributed systems.

Etcd publishes 6 APIs on the APIs.io network, including Auth API, Cluster API, KV API, and 3 more. Tagged areas include Cloud Native, Consensus, Distributed Systems, Graduated, and Key-Value Store.

The Etcd catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Etcd’s developer surface includes authentication, documentation, getting-started guide, engineering blog, changelog, support, Stack Overflow tag, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

51.1/100 developing ▬ flat Agent 38/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6

AccessFreeSelf serve⚡ Free to try

10 APIs

Cloud NativeConsensusDistributed SystemsGraduatedKey-Value StoreKubernetes

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6

Composite quality — 51.1/100 · developing

Contract Quality 15.5 / 25

Developer Ergonomics 7.4 / 20

Commercial Clarity 5.8 / 20

Operational Transparency 8.2 / 13

Governance 7.0 / 12

Discoverability 7.2 / 10

Agent readiness — 38/100 · 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 0 / 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/etcd: 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 10

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

Rate Limits 1

Documented rate limits and quota policies.

Etcd Rate Limits

4 limits

RATE LIMITS

FinOps 1

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

JSON Schema 76

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

Scroll for all 76

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

GettingStarted

GettingStarted

Documentation 2

Reference material describing how the API behaves

JSONSchema

JSONSchema

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Build 2

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

GitHubRepository

GitHubRepository

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Security

Security

Operate 4

Status, limits, changes, and where to get help

Community

ChangeLog

Support

StackOverflow

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: etcd
name: Etcd
description: etcd is a CNCF graduated distributed, reliable key-value store used as the backing store for all Kubernetes cluster
  data. It provides strong consistency guarantees using the Raft consensus algorithm, supporting watch operations, lease-based
  TTLs, and atomic compare-and-swap transactions. etcd is designed for high availability and stores critical configuration
  data for distributed systems.
url: https://etcd.io
accessModel:
  pricing: free
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Free · 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/etcd.png
tags:
- Cloud Native
- Consensus
- Distributed Systems
- Graduated
- Key-Value Store
- Kubernetes
created: '2026-03-16'
modified: '2026-05-19'
specificationVersion: '0.19'
type: Index
apis:
- aid: etcd:etcd-grpc-api
  name: etcd gRPC API
  description: The etcd v3 API is a gRPC-based interface providing key-value operations (put, get, delete, range), watch streams
    for change notifications, lease management for TTL-based keys, cluster membership management, maintenance operations including
    snapshots and defragmentation, and authentication and authorization controls.
  humanURL: https://etcd.io/docs/v3.5/learning/api/
  properties:
  - type: Documentation
    url: https://etcd.io/docs/v3.5/learning/api/
  - type: Reference
    url: https://etcd.io/docs/v3.5/learning/api_guarantees/
  - type: Authentication
    url: https://etcd.io/docs/v3.5/op-guide/authentication/
  - type: GettingStarted
    url: https://etcd.io/docs/v3.5/dev-guide/interacting_v3/
  - type: Client Libraries
    url: https://etcd.io/docs/v3.5/integrations/
  tags:
  - Cluster Management
  - gRPC
  - Key-Value
  - Lease
  - Watch
- aid: etcd:etcd-concurrency-api
  name: etcd Concurrency API
  description: The etcd concurrency API provides distributed primitives built on top of the core key-value store, including
    distributed mutexes (locks), leader election, and software transactional memory (STM). These primitives are used to coordinate
    between distributed processes and implement consensus patterns in clustered applications.
  humanURL: https://etcd.io/docs/v3.5/dev-guide/api_concurrency_reference_v3/
  properties:
  - type: Documentation
    url: https://etcd.io/docs/v3.5/dev-guide/api_concurrency_reference_v3/
  - type: Reference
    url: https://etcd.io/docs/v3.5/dev-guide/api_concurrency_reference_v3/
  tags:
  - Concurrency
  - Coordination
  - Distributed Locking
  - Leader Election
- aid: etcd:etcd-metrics-api
  name: etcd Metrics API
  description: etcd exposes a Prometheus-compatible metrics endpoint that provides operational insights into the etcd cluster,
    including request rates, latency histograms, disk I/O statistics, Raft state, and cluster health indicators. This endpoint
    is used for monitoring and alerting in production etcd deployments.
  humanURL: https://etcd.io/docs/v3.5/op-guide/monitoring/
  properties:
  - type: Documentation
    url: https://etcd.io/docs/v3.5/op-guide/monitoring/
  - type: Reference
    url: https://etcd.io/docs/v3.5/metrics/
  tags:
  - Metrics
  - Monitoring
  - Observability
  - Prometheus
- aid: etcd:etcd-v2-api
  name: etcd v2 HTTP API
  description: The original etcd v2 API exposed a RESTful HTTP interface for key-value operations using a hierarchical directory
    structure. This API has been deprecated in favor of the v3 gRPC API and was removed from the default etcd build in later
    versions. Existing users should migrate to the v3 API.
  humanURL: https://etcd.io/docs/v2.3/api/
  properties:
  - type: Documentation
    url: https://etcd.io/docs/v2.3/api/
  - type: Deprecation Notice
    url: https://etcd.io/docs/v3.5/op-guide/v2-migration/
  - type: Migration Guide
    url: https://etcd.io/docs/v3.5/op-guide/v2-migration/
  tags:
  - Deprecated
  - HTTP
  - Key-Value
  - REST
- aid: etcd:etcd-auth-api
  name: Etcd Auth API
  description: Authentication and authorization management for users and roles
  humanURL: https://etcd.io/docs/v3.5/learning/api/
  tags:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/etcd-auth-api-openapi.yml
  - type: Documentation
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
  - type: Reference
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
- aid: etcd:etcd-cluster-api
  name: Etcd Cluster API
  description: Cluster membership management including member add, remove, and list
  humanURL: https://etcd.io/docs/v3.5/learning/api/
  tags:
  - Cluster
  properties:
  - type: OpenAPI
    url: openapi/etcd-cluster-api-openapi.yml
  - type: Documentation
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
  - type: Reference
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
- aid: etcd:etcd-kv-api
  name: Etcd KV API
  description: Key-value store operations including put, get, delete, and range queries
  humanURL: https://etcd.io/docs/v3.5/learning/api/
  tags:
  - KV
  properties:
  - type: OpenAPI
    url: openapi/etcd-kv-api-openapi.yml
  - type: Documentation
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
  - type: Reference
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
- aid: etcd:etcd-lease-api
  name: Etcd Lease API
  description: Lease management for TTL-based key expiration
  humanURL: https://etcd.io/docs/v3.5/learning/api/
  tags:
  - Lease
  properties:
  - type: OpenAPI
    url: openapi/etcd-lease-api-openapi.yml
  - type: Documentation
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
  - type: Reference
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
- aid: etcd:etcd-maintenance-api
  name: Etcd Maintenance API
  description: Maintenance operations including snapshots, defragmentation, and status
  humanURL: https://etcd.io/docs/v3.5/learning/api/
  tags:
  - Maintenance
  properties:
  - type: OpenAPI
    url: openapi/etcd-maintenance-api-openapi.yml
  - type: Documentation
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
  - type: Reference
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
- aid: etcd:etcd-watch-api
  name: Etcd Watch API
  description: Watch operations for streaming key change notifications
  humanURL: https://etcd.io/docs/v3.5/learning/api/
  tags:
  - Watch
  properties:
  - type: OpenAPI
    url: openapi/etcd-watch-api-openapi.yml
  - type: Documentation
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
  - type: Reference
    url: https://etcd.io/docs/v3.5/dev-guide/api_grpc_gateway/
common:
- type: AgenticAccess
  url: agentic-access/etcd-agentic-access.yml
- type: DomainSecurity
  url: security/etcd-domain-security.yml
- type: Authentication
  url: authentication/etcd-authentication.yml
- type: JSONSchema
  url: json-schema/etcd-key-value-schema.json
- type: JSONLD
  url: json-ld/etcd-context.jsonld
- type: Website
  name: etcd Website
  description: Official etcd project website.
  url: https://etcd.io
- type: Documentation
  name: etcd Documentation
  description: Official etcd documentation.
  url: https://etcd.io/docs/
- type: GettingStarted
  name: etcd Getting Started
  description: Guide to installing and using etcd for the first time.
  url: https://etcd.io/docs/v3.5/quickstart/
- type: GitHubOrganization
  name: etcd GitHub Organization
  description: Source code and related repositories for the etcd project.
  url: https://github.com/etcd-io
- type: GitHubRepository
  name: etcd GitHub Repository
  description: Main etcd source code repository.
  url: https://github.com/etcd-io/etcd
- type: Blog
  name: etcd Blog
  description: Project blog and announcements.
  url: https://etcd.io/blog/
- type: Community
  name: etcd Community
  description: Community resources and contribution guidelines for the etcd project.
  url: https://etcd.io/community/
- type: ChangeLog
  name: etcd Changelog
  description: Release notes and version history for etcd.
  url: https://github.com/etcd-io/etcd/blob/main/CHANGELOG/
- type: Security
  name: etcd Security
  description: Security disclosure policy and advisories for etcd.
  url: https://github.com/etcd-io/etcd/blob/main/security/SECURITY.md
- type: Support
  name: etcd Support
  description: Community support channels including mailing lists and Slack.
  url: https://etcd.io/community/
- type: StackOverflow
  name: etcd Stack Overflow
  description: etcd-tagged questions and answers on Stack Overflow.
  url: https://stackoverflow.com/questions/tagged/etcd
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Etcd

APIs 10

Open Collections 1

Pricing Plans 1