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: IssueTracker
    url: https://github.com/etcd-io/etcd/issues
  - type: Releases
    url: https://github.com/etcd-io/etcd/releases
  - type: SecurityPolicy
    url: https://github.com/etcd-io/etcd/blob/main/.github/SECURITY.md
  - type: CodeOfConduct
    url: https://github.com/etcd-io/etcd/blob/main/code-of-conduct.md
  - type: ContributionGuide
    url: https://github.com/etcd-io/etcd/blob/main/CONTRIBUTING.md
  - type: License
    name: Apache-2.0
    url: https://github.com/etcd-io/etcd/blob/main/LICENSE
  - 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