# Kurrent

**Canonical:** https://apis.io/providers/kurrent/  
**Website:** https://www.kurrent.io/  
**APIs profiled:** 1

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.

## Kin Score — 45.8 / 100 (developing)

Scored 2026-08-30 under rubric 0.17.2. Trend: flat (-0.6 from 46.4).

| Facet | Score |
|---|---|
| Discoverability | 75.9 |
| Contract Quality | 21.7 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 50.0 |
| Developer Ergonomics | 90.5 |
| Commercial Clarity | 38.2 |
| Access Clarity | 38.2 |

## Agent readiness — 45.5 (agent-native)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | documented |
| Auth Clarity | served |
| Idempotency | documented |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | yes |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | served |
| Protected Resource Metadata | no |
| Dynamic Client Registration | yes |
| Agentic Commerce | no |

## Access

Self-serve signup — onboarding: self-serve, pricing: unknown, trial: no (confidence: medium).

## APIs (9)

- **KurrentDB gRPC API** — The primary protocol for KurrentDB. The published protocol buffer definitions cover the v2 streams service (multi-stream appends, reads), the schema registry service, the second...
- **Kurrent Admin API** — Node administration operations
- **Kurrent Gossip API** — Cluster gossip
- **Kurrent Info API** — Node information and configuration
- **Kurrent Projections API** — Create, manage and query projections
- **Kurrent Statistics API** — Node statistics
- **Kurrent Streams API** — Append to, read from and manage event streams
- **Kurrent Subscriptions API** — Persistent (competing consumer) subscription management and consumption
- **Kurrent Users API** — User account management

## MCP servers (1)

- **KurrentDB** — Official Kurrent MCP server that lets an agent explore data in KurrentDB by reading streams, writing events, and building, creating, updating and testing projections.

## Security (3)

- **Kurrent Authentication** — http/mutualTLS/openIdConnect · 3 schemes
- **Kurrent Domain Security** — TLSv1.3 · DMARC
- **Kurrent Trust Center** — trust center published

## Tags

Company, Database, Event Sourcing, Event Streaming, Event Driven Architecture, CQRS, Data Infrastructure, Developer Tools, Cloud, Open-Source, gRPC, Agentic AI

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/kurrent/). Scores are computed from the provider's own public artifacts under a published rubric.