Chatwork website screenshot

Chatwork

Chatwork is a Japanese business messaging and collaboration platform similar to Slack, providing group chat rooms, task management, file sharing, and video calls for teams and organizations. The Chatwork REST API v2 enables programmatic access to user info, contacts, chat rooms, messages, tasks, and files, authenticated via an API token sent in the X-ChatWorkToken HTTP header.

Chatwork publishes 9 APIs on the APIs.io network, including Contacts API, Files API, Incoming Requests API, and 6 more. Tagged areas include Messaging, Chat, Collaboration, Productivity, and Tasks.

Chatwork’s developer surface includes authentication, documentation, API reference, pricing, signup flow, support, and 12 more developer resources.

🌐 Visit website 📡 Source on GitHub
34.4/100 thin ▬ flat Agent 38/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessSelf serve
9 APIs 1 MCP Servers
MessagingChatCollaborationProductivityTasks

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 34.4/100 · thin
Contract Quality 13.4 / 25
Developer Ergonomics 7.8 / 20
Commercial Clarity 4.7 / 20
Operational Transparency 2.7 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 38/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 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/chatwork: 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.

Chatwork Contacts API

The Contacts API from Chatwork — 1 operation(s) for contacts.

Chatwork Files API

The Files API from Chatwork — 2 operation(s) for files.

Chatwork Incoming Requests API

The Incoming Requests API from Chatwork — 2 operation(s) for incoming requests.

Chatwork Link API

The Link API from Chatwork — 1 operation(s) for link.

Chatwork Me API

The Me API from Chatwork — 3 operation(s) for me.

Chatwork Members API

The Members API from Chatwork — 1 operation(s) for members.

Chatwork Messages API

The Messages API from Chatwork — 4 operation(s) for messages.

Chatwork Rooms API

The Rooms API from Chatwork — 2 operation(s) for rooms.

Chatwork Tasks API

The Tasks API from Chatwork — 3 operation(s) for tasks.

Scroll for all 9

Open Collections 1

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

Chatwork API v2

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

MCP Server

MCP SERVER

Security Posture 3

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

Chatwork Authentication

apiKey · 1 scheme

SECURITY

Chatwork Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Chatwork Vulnerability Disclosure

disclosure policy published

SECURITY

Agentic Access 1

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

Chatwork Agentic Access

32 operations · 17 acting

32 operations · 17 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Signup
Signup
 Login
Login

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess
 MCPServer
MCPServer
 LlmsText
LlmsText

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 4

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Other 1

Properties that don't map to a standard resource type

API Source
API Source

Source (apis.yml)

apis.yml Raw ↑ 
aid: chatwork
name: Chatwork
description: Chatwork is a Japanese business messaging and collaboration platform similar to Slack, providing group chat rooms,
  task management, file sharing, and video calls for teams and organizations. The Chatwork REST API v2 enables programmatic
  access to user info, contacts, chat rooms, messages, tasks, and files, authenticated via an API token sent in the X-ChatWorkToken
  HTTP header.
type: Index
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/chatwork.png
tags:
- Messaging
- Chat
- Collaboration
- Productivity
- Tasks
url: https://raw.githubusercontent.com/api-evangelist/chatwork/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-19'
specificationVersion: '0.19'
apis:
- aid: chatwork:chatwork-contacts-api
  name: Chatwork Contacts API
  description: The Contacts API from Chatwork — 1 operation(s) for contacts.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/chatwork-contacts-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
- aid: chatwork:chatwork-files-api
  name: Chatwork Files API
  description: The Files API from Chatwork — 2 operation(s) for files.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Files
  properties:
  - type: OpenAPI
    url: openapi/chatwork-files-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
- aid: chatwork:chatwork-incoming-requests-api
  name: Chatwork Incoming Requests API
  description: The Incoming Requests API from Chatwork — 2 operation(s) for incoming requests.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Incoming Requests
  properties:
  - type: OpenAPI
    url: openapi/chatwork-incoming-requests-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
- aid: chatwork:chatwork-link-api
  name: Chatwork Link API
  description: The Link API from Chatwork — 1 operation(s) for link.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Link
  properties:
  - type: OpenAPI
    url: openapi/chatwork-link-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
- aid: chatwork:chatwork-me-api
  name: Chatwork Me API
  description: The Me API from Chatwork — 3 operation(s) for me.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Me
  properties:
  - type: OpenAPI
    url: openapi/chatwork-me-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
- aid: chatwork:chatwork-members-api
  name: Chatwork Members API
  description: The Members API from Chatwork — 1 operation(s) for members.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Members
  properties:
  - type: OpenAPI
    url: openapi/chatwork-members-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
- aid: chatwork:chatwork-messages-api
  name: Chatwork Messages API
  description: The Messages API from Chatwork — 4 operation(s) for messages.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/chatwork-messages-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
- aid: chatwork:chatwork-rooms-api
  name: Chatwork Rooms API
  description: The Rooms API from Chatwork — 2 operation(s) for rooms.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Rooms
  properties:
  - type: OpenAPI
    url: openapi/chatwork-rooms-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
- aid: chatwork:chatwork-tasks-api
  name: Chatwork Tasks API
  description: The Tasks API from Chatwork — 3 operation(s) for tasks.
  humanURL: https://developer.chatwork.com
  baseURL: https://api.chatwork.com/v2
  tags:
  - Tasks
  properties:
  - type: OpenAPI
    url: openapi/chatwork-tasks-api-openapi.yml
  - type: Documentation
    url: https://developer.chatwork.com
  - type: APIReference
    url: https://developer.chatwork.com/reference
  - type: OAuth
    url: https://developer.chatwork.com/docs/oauth
common:
- type: AgenticAccess
  url: agentic-access/chatwork-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/chatwork-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/chatwork-domain-security.yml
- type: Authentication
  url: authentication/chatwork-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/chatwork
- type: Website
  url: https://go.chatwork.com
- type: Documentation
  url: https://developer.chatwork.com
- type: APIReference
  url: https://developer.chatwork.com/reference
- type: Pricing
  url: https://go.chatwork.com/en/price/
- type: Signup
  url: https://www.chatwork.com/login/
- type: Login
  url: https://www.chatwork.com/login/
- type: Authentication
  url: https://developer.chatwork.com/docs/oauth
- type: GitHubOrganization
  url: https://github.com/chatwork
- type: API Source
  url: https://github.com/chatwork/api
- type: Support
  url: https://help.chatwork.com
- type: StatusPage
  url: https://status.chatwork.com
- name: MCP Server
  url: https://github.com/chatwork/chatwork-mcp-server
  type: MCPServer
- type: LlmsText
  url: https://developer.chatwork.com/llms.txt
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com