ClickHouse website screenshot

ClickHouse

ClickHouse is a fast open-source column-oriented database management system that enables real-time analytical reporting using SQL. ClickHouse exposes multiple interfaces - an HTTP interface for SQL queries, native TCP, MySQL and PostgreSQL wire-compatible interfaces, and a gRPC interface - and the ClickHouse Cloud management plane offers a public OpenAPI-described REST API for provisioning and managing services, organizations, members, API keys, backups, and private endpoints.

ClickHouse publishes 4 APIs on the APIs.io network, including ClickHouse HTTP Interface API, Ping API, Play API, and 1 more. Tagged areas include Analytics, Cloud Database, Column-Oriented, Database, and OLAP.

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

ClickHouse’s developer surface includes authentication, documentation, getting-started guide, GitHub presence, engineering blog, pricing, support, and 13 more developer resources.

58.4/100 strong ▬ flat Agent 36/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
9 APIs
AnalyticsCloud DatabaseColumn-OrientedDatabaseOLAPOpen SourceReal-TimeSQL

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 58.4/100 · strong
Contract Quality 14.8 / 25
Developer Ergonomics 8.3 / 20
Commercial Clarity 15.8 / 20
Operational Transparency 6.8 / 13
Governance 6.3 / 12
Discoverability 6.5 / 10
Agent readiness — 36/100 · 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 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 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/clickhouse: 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 9

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

ClickHouse HTTP Interface

HTTP interface (default port 8123, HTTPS 8443) for executing SQL queries against ClickHouse. Supports SELECT via GET, mutations via POST, multiple output formats (JSON, CSV, XML...

ClickHouse Native TCP Interface

Native binary TCP protocol used by ClickHouse client libraries for maximum throughput between client and server (default port 9000).

ClickHouse MySQL Interface

MySQL wire protocol compatibility allowing existing MySQL clients and BI tools to query ClickHouse without driver changes.

ClickHouse PostgreSQL Interface

PostgreSQL wire protocol compatibility for connecting psql, JDBC and other PostgreSQL clients to ClickHouse.

ClickHouse gRPC Interface

gRPC interface defined by clickhouse_grpc.proto for efficient binary communication.

ClickHouse ClickHouse HTTP Interface API

The ClickHouse HTTP Interface API from ClickHouse — 1 operation(s) for clickhouse http interface.

ClickHouse Ping API

The Ping API from ClickHouse — 1 operation(s) for ping.

ClickHouse Play API

The Play API from ClickHouse — 1 operation(s) for play.

ClickHouse Replicas Status API

The Replicas Status API from ClickHouse — 1 operation(s) for replicas status.

Scroll for all 9

Postman Collections 4

Ready-to-run Postman collections for exercising this provider's APIs.

Open Collections 1

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

ClickHouse HTTP Interface

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Clickhouse Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Event Specifications 1

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

ClickHouse Kafka Table Engine (Consumer-Side Streaming)

AsyncAPI description of the documented streaming surface that ClickHouse offers through the Kafka table engine. ClickHouse itself does NOT publish a public WebSocket, Server-Sen...

ASYNCAPI

Semantic Vocabularies 1

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

Clickhouse Context

0 classes · 5 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

ClickHouse API Rules

3 rules · 3 warnings

SPECTRAL

ClickHouse API Rules

9 rules · 4 errors 5 warnings

SPECTRAL

Security Posture 3

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

Clickhouse Authentication

apiKey/http · 2 schemes

SECURITY

Clickhouse Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Clickhouse Trust Center

SOC 2, ISO 27001, PCI DSS, HIPAA, GDPR

SECURITY

Agentic Access 1

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

Clickhouse Agentic Access

5 operations · 1 acting

5 operations · 1 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 3

Authentication, authorization, and security posture

Operate 4

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 3

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: clickhouse
name: ClickHouse
url: https://raw.githubusercontent.com/api-evangelist/clickhouse/refs/heads/main/apis.yml
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
created: '2024-01-01'
modified: '2026-04-26'
type: Index
access: 3rd-Party
position: Consumer
specificationVersion: '0.19'
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/clickhouse.png
kind: opensource
tags:
- Analytics
- Cloud Database
- Column-Oriented
- Database
- OLAP
- Open Source
- Real-Time
- SQL
description: ClickHouse is a fast open-source column-oriented database management system that enables real-time analytical
  reporting using SQL. ClickHouse exposes multiple interfaces - an HTTP interface for SQL queries, native TCP, MySQL and PostgreSQL
  wire-compatible interfaces, and a gRPC interface - and the ClickHouse Cloud management plane offers a public OpenAPI-described
  REST API for provisioning and managing services, organizations, members, API keys, backups, and private endpoints.
apis:
- aid: clickhouse:clickhouse-http-interface
  name: ClickHouse HTTP Interface
  tags:
  - Database
  - HTTP
  - SQL
  humanURL: https://clickhouse.com/docs/en/interfaces/http
  baseURL: http://localhost:8123
  properties:
  - url: https://clickhouse.com/docs/en/interfaces/http
    type: Documentation
  description: HTTP interface (default port 8123, HTTPS 8443) for executing SQL queries against ClickHouse. Supports SELECT
    via GET, mutations via POST, multiple output formats (JSON, CSV, XML, TabSeparated), and authentication via HTTP Basic,
    URL parameters, or X-ClickHouse-User/X-ClickHouse-Key headers. Helper paths include /ping and /replicas_status.
- aid: clickhouse:clickhouse-native
  name: ClickHouse Native TCP Interface
  tags:
  - Native
  - TCP
  humanURL: https://clickhouse.com/docs/en/interfaces/tcp
  properties:
  - url: https://clickhouse.com/docs/en/interfaces/tcp
    type: Documentation
  description: Native binary TCP protocol used by ClickHouse client libraries for maximum throughput between client and server
    (default port 9000).
- aid: clickhouse:clickhouse-mysql
  name: ClickHouse MySQL Interface
  tags:
  - MySQL
  - Wire Protocol
  humanURL: https://clickhouse.com/docs/en/interfaces/mysql
  properties:
  - url: https://clickhouse.com/docs/en/interfaces/mysql
    type: Documentation
  description: MySQL wire protocol compatibility allowing existing MySQL clients and BI tools to query ClickHouse without
    driver changes.
- aid: clickhouse:clickhouse-postgresql
  name: ClickHouse PostgreSQL Interface
  tags:
  - PostgreSQL
  - Wire Protocol
  humanURL: https://clickhouse.com/docs/en/interfaces/postgresql
  properties:
  - url: https://clickhouse.com/docs/en/interfaces/postgresql
    type: Documentation
  description: PostgreSQL wire protocol compatibility for connecting psql, JDBC and other PostgreSQL clients to ClickHouse.
- aid: clickhouse:clickhouse-grpc
  name: ClickHouse gRPC Interface
  tags:
  - gRPC
  - Protocol Buffers
  humanURL: https://clickhouse.com/docs/en/interfaces/grpc
  properties:
  - url: https://clickhouse.com/docs/en/interfaces/grpc
    type: Documentation
  - url: https://github.com/ClickHouse/ClickHouse/blob/master/src/Server/grpc_protos/clickhouse_grpc.proto
    type: Protocol Buffers
  description: gRPC interface defined by clickhouse_grpc.proto for efficient binary communication.
- aid: clickhouse:clickhouse-clickhouse-http-interface-api
  name: ClickHouse ClickHouse HTTP Interface API
  description: The ClickHouse HTTP Interface API from ClickHouse — 1 operation(s) for clickhouse http interface.
  humanURL: https://clickhouse.com/docs/en/interfaces/http
  baseURL: http://localhost:8123
  tags:
  - ClickHouse HTTP Interface
  properties:
  - type: OpenAPI
    url: openapi/clickhouse-clickhouse-http-interface-api-openapi.yml
  - type: Documentation
    url: https://clickhouse.com/docs/en/cloud/manage/api/api-overview
  - type: Swagger
    url: https://clickhouse.com/docs/cloud/manage/api/swagger
- aid: clickhouse:clickhouse-ping-api
  name: ClickHouse Ping API
  description: The Ping API from ClickHouse — 1 operation(s) for ping.
  humanURL: https://clickhouse.com/docs/en/interfaces/http
  baseURL: http://localhost:8123
  tags:
  - Ping
  properties:
  - type: OpenAPI
    url: openapi/clickhouse-ping-api-openapi.yml
  - type: Documentation
    url: https://clickhouse.com/docs/en/cloud/manage/api/api-overview
  - type: Swagger
    url: https://clickhouse.com/docs/cloud/manage/api/swagger
- aid: clickhouse:clickhouse-play-api
  name: ClickHouse Play API
  description: The Play API from ClickHouse — 1 operation(s) for play.
  humanURL: https://clickhouse.com/docs/en/interfaces/http
  baseURL: http://localhost:8123
  tags:
  - Play
  properties:
  - type: OpenAPI
    url: openapi/clickhouse-play-api-openapi.yml
  - type: Documentation
    url: https://clickhouse.com/docs/en/cloud/manage/api/api-overview
  - type: Swagger
    url: https://clickhouse.com/docs/cloud/manage/api/swagger
- aid: clickhouse:clickhouse-replicas-status-api
  name: ClickHouse Replicas Status API
  description: The Replicas Status API from ClickHouse — 1 operation(s) for replicas status.
  humanURL: https://clickhouse.com/docs/en/interfaces/http
  baseURL: http://localhost:8123
  tags:
  - Replicas Status
  properties:
  - type: OpenAPI
    url: openapi/clickhouse-replicas-status-api-openapi.yml
  - type: Documentation
    url: https://clickhouse.com/docs/en/cloud/manage/api/api-overview
  - type: Swagger
    url: https://clickhouse.com/docs/cloud/manage/api/swagger
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/clickhouse/overview
- type: AgenticAccess
  url: agentic-access/clickhouse-agentic-access.yml
- type: TrustCenter
  url: security/clickhouse-trust-center.yml
- type: DomainSecurity
  url: security/clickhouse-domain-security.yml
- type: Authentication
  url: authentication/clickhouse-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/clickhouseinc
- type: Website
  url: https://clickhouse.com/
- type: Documentation
  url: https://clickhouse.com/docs
- type: GettingStarted
  url: https://clickhouse.com/docs/en/getting-started
- type: GitHub
  url: https://github.com/ClickHouse/ClickHouse
- type: Blog
  url: https://clickhouse.com/blog
- type: Community
  url: https://clickhouse.com/community
- type: Slack
  url: https://clickhouse.com/slack
- type: Pricing
  url: https://clickhouse.com/pricing
- type: Support
  url: https://clickhouse.com/support
- type: StatusPage
  url: https://status.clickhouse.com/
- type: PrivacyPolicy
  url: https://clickhouse.com/legal/privacy-policy
- type: TermsOfService
  url: https://clickhouse.com/legal/terms-of-service
- type: JSONLD
  url: json-ld/clickhouse-context.jsonld
- type: Spectral
  url: rules/clickhouse-rules.yml
- type: Integrations
  url: https://clickhouse.com/integrations
integrations:
- name: Airbyte
- name: Amazon S3
- name: CloudQuery
- name: Confluent Cloud
- name: Google Cloud Storage (GCS)
- name: Kafka
- name: MySQL
- name: PostgreSQL
- name: Prequel
- name: new Streamkap
- name: Vector
- name: Deepnote
- name: Grafana
- name: Hex
- name: Metabase
- name: Splunk
- name: Superset
- name: Tableau
- name: DataGrip
- name: DBeaver
- name: C#
- name: Java
- name: Node.js
- name: Python
- name: dbt
- name: Microsoft Azure Data Factory
- name: Microsoft Azure Synapse
- name: pg_clickhouse
- name: AWS
- name: Azure
- name: Google Cloud
maintainers:
- FN: Kin Lane
  email: kinlane@gmail.com