Kurrent

aid: kurrent
name: Kurrent
description: Kurrent — formerly Event Store Ltd — builds KurrentDB, an event-native database purpose-built to store, process
  and deliver application state changes as an immutable, append-only log of events. Where a traditional CRUD database overwrites
  rows and discards the history that produced them, KurrentDB retains every state change as a first-class event, giving applications
  a complete audit trail, temporal queries and the ability to replay history to rebuild state or seed new read models. The
  product line spans KurrentDB (open-source and commercial, self-hosted), Kurrent Cloud (managed clusters on AWS, Azure and
  Google Cloud), Kurrent Enterprise, and Capacitor, a shared memory layer for agentic coding. Developers integrate over a
  primary gRPC protocol with official client SDKs for .NET, Java, Node.js, Python, Go and Rust, or over the native AtomPub-style
  HTTP API. Connectors move events in and out of Kafka, MongoDB, Elasticsearch, RabbitMQ, Pulsar, SQL and HTTP endpoints.
  KurrentDB is widely used for event sourcing, CQRS, event-driven microservices, change data capture and, increasingly, as
  durable memory for AI agents.
image: https://www.kurrent.io/favicon.ico
url: https://raw.githubusercontent.com/api-evangelist/kurrent/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- creandum
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Database
- Event Sourcing
- Event Streaming
- Event Driven Architecture
- CQRS
- Data Infrastructure
- Developer Tools
- Cloud
- Open Source
- gRPC
- Agentic AI
apis:
- aid: kurrent:kurrentdb-http-api
  name: KurrentDB HTTP API
  description: KurrentDB exposes a native AtomPub-over-HTTP interface alongside its primary gRPC protocol, covering stream
    append and read, persistent (competing consumer) subscriptions, projections, user administration, node administration,
    statistics and cluster gossip. Authentication is HTTP Basic with per-stream access control lists. The base URL is your
    own KurrentDB node or Kurrent Cloud cluster, which serves the HTTP API on port 2113 by default.
  humanURL: https://docs.kurrent.io/server/v26.1/http-api/introduction.html
  baseURL: https://docs.kurrent.io/server/v26.1/http-api/api.html
  tags:
  - Streams
  - Subscriptions
  - Projections
  - Events
  - Database
  properties:
  - type: OpenAPI
    url: openapi/kurrent-kurrentdb-http-api-openapi.yml
  - type: Overlay
    url: overlays/kurrent-kurrentdb-http-api-overlay.yaml
  - type: Documentation
    url: https://docs.kurrent.io/server/v26.1/http-api/introduction.html
  - type: APIReference
    url: https://docs.kurrent.io/server/v26.1/http-api/api.html
  - type: Authentication
    url: https://docs.kurrent.io/server/v26.1/http-api/security.html
- aid: kurrent:kurrentdb-grpc-api
  name: KurrentDB gRPC API
  description: The primary protocol for KurrentDB. The published protocol buffer definitions cover the v2 streams service
    (multi-stream appends, reads), the schema registry service, the secondary index service, and the shared RPC error model.
    Every official client SDK — .NET, Java, Node.js, Python, Go and Rust — is generated against these contracts.
  humanURL: https://docs.kurrent.io/clients/
  baseURL: https://github.com/kurrent-io/KurrentDB/tree/master/proto
  tags:
  - gRPC
  - Protobuf
  - Streams
  - Schema Registry
  - Database
  properties:
  - type: Protobuf
    url: grpc/kurrent-streams.proto
  - type: Protobuf
    url: grpc/kurrent-rpc.proto
  - type: Documentation
    url: https://docs.kurrent.io/clients/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.kurrent.io/
- type: DeveloperPortal
  url: https://docs.kurrent.io/dev-center/
- type: Documentation
  url: https://docs.kurrent.io/
- type: APIReference
  url: https://docs.kurrent.io/server/v26.1/http-api/api.html
- type: GettingStarted
  url: https://docs.kurrent.io/getting-started/quickstart/
- type: Support
  url: https://eventstore.freshdesk.com/support/login
- type: HelpCenter
  url: https://discuss.kurrent.io/
- type: Blog
  url: https://www.kurrent.io/blog
- type: BlogRSS
  url: https://www.kurrent.io/rss.xml
- type: GitHubOrganization
  url: https://github.com/kurrent-io
- type: Pricing
  url: https://www.kurrent.io/pricing
- type: SignUp
  url: https://identity.eventstore.com/login
- type: Login
  url: https://console.kurrent.cloud/
- type: TermsOfService
  url: https://www.kurrent.io/terms-of-use
- type: PrivacyPolicy
  url: https://www.kurrent.io/privacy-policy
- type: StatusPage
  url: https://status.eventstore.cloud/
- type: ChangeLog
  url: https://www.kurrent.io/releases
- type: Discord
  url: https://discord.gg/Phn9pmCw3t
- type: YouTube
  url: https://www.youtube.com/@Kurrent_io
- type: Training
  url: https://academy.kurrent.io
- type: Packages
  url: packages/kurrent-packages.yml
- type: SDKs
  url: packages/kurrent-packages.yml
- type: CLI
  url: cli/kurrent-cli.yml
- type: MCPServer
  url: mcp/kurrent-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/kurrent-llms.txt
- type: WellKnown
  url: well-known/kurrent-well-known.yml
- type: Authentication
  url: authentication/kurrent-authentication.yml
- type: OAuthScopes
  url: scopes/kurrent-scopes.yml
- type: Conventions
  url: conventions/kurrent-conventions.yml
- type: Idempotency
  url: conventions/kurrent-conventions.yml
- type: ErrorCatalog
  url: errors/kurrent-problem-types.yml
- type: ErrorCatalog
  url: errors/kurrent-error-codes.yml
- type: Sandbox
  url: sandbox/kurrent-sandbox.yml
- type: Conformance
  url: conformance/kurrent-conformance.yml
- type: Lifecycle
  url: lifecycle/kurrent-lifecycle.yml
- type: Deprecation
  url: lifecycle/kurrent-lifecycle.yml
- type: ChangeLog
  url: changelog/kurrent-changelog.yml
- type: DataModel
  url: data-model/kurrent-data-model.yml
- type: Webhooks
  url: asyncapi/kurrent-connectors-webhooks.yml
- type: TrustCenter
  url: https://trust.kurrent.io/
- type: TrustCenter
  url: security/kurrent-trust-center.yml
- type: DomainSecurity
  url: security/kurrent-domain-security.yml
- type: Protobuf
  url: grpc/kurrent-streams.proto
- type: Overlay
  url: overlays/kurrent-kurrentdb-http-api-overlay.yaml
- type: OpenAPI
  url: openapi/kurrent-kurrentdb-http-api-openapi.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence