Google Chat

The Google Chat API enables building Chat apps that integrate with Google Chat. It provides RESTful access to manage Chat spaces, memberships, messages, reactions, attachments, and custom emojis. The API supports creating conversational bots, automating messaging workflows, and managing organizational chat resources programmatically.

Google Chat publishes 7 APIs on the APIs.io network, including customEmojis API, Google Chat API API, Members API, and 4 more. Tagged areas include Chat, Collaboration, Google, Google Workspace, and Messaging.

The Google Chat catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

Google Chat’s developer surface includes developer portal, getting-started guide, authentication, pricing, support, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

44.7/100 developing ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessFreemium

1 APIs

Chat Collaboration Google Google Workspace Messaging Spaces

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 44.7/100 · developing

Contract Quality 12.8 / 23

Developer Ergonomics 9.2 / 18

Access Clarity 8.5 / 18

Operational Transparency 3.1 / 12

Contract Governance 1.1 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/google-chat: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 7

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

Google Chat customEmojis API

The customEmojis API from Google Chat — 1 operation(s) for customemojis.

Google Chat Google Chat API API

The Google Chat API API from Google Chat — 1 operation(s) for google chat api.

Google Chat Members API

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

Google Chat Messages API

The Messages API from Google Chat — 1 operation(s) for messages.

Google Chat Reactions API

The Reactions API from Google Chat — 1 operation(s) for reactions.

Google Chat Spaces API

The Spaces API from Google Chat — 1 operation(s) for spaces.

Google Chat Spaces:setup API

The Spaces:setup API from Google Chat — 1 operation(s) for spaces:setup.

Scroll for all 7

Postman Collections 7

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

Google Chat customEmojis API

POSTMAN

Google Chat customEmojis Google Chat API API

POSTMAN

Google Chat customEmojis Members API

POSTMAN

Google Chat customEmojis Messages API

POSTMAN

Google Chat customEmojis Reactions API

POSTMAN

Google Chat customEmojis Spaces API

POSTMAN

Google Chat customEmojis Spaces:setup API

POSTMAN

Scroll for all 7

Open Collections 9

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

API Collection

OPEN COLLECTION

Google Chat customEmojis API

OPEN COLLECTION

Google Chat customEmojis Google Chat API API

OPEN COLLECTION

Google Chat customEmojis Members API

OPEN COLLECTION

Google Chat customEmojis Messages API

OPEN COLLECTION

Google Chat customEmojis Reactions API

OPEN COLLECTION

Google Chat customEmojis Spaces API

OPEN COLLECTION

Google Chat customEmojis Spaces:setup API

OPEN COLLECTION

Google Chat API

OPEN COLLECTION

Scroll for all 9

Pricing Plans 1

Published pricing tiers and plan structures.

Google Chat Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Google Chat Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Google Chat Finops

FINOPS

Semantic Vocabularies 1

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

Json Ld Context

4 classes · 4 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Google Chat API Rules

6 rules · 4 warnings 2 info

SPECTRAL

Security Posture 2

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

Google Chat Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Google Chat Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Google Chat Agentic Access

14 operations · 8 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

JSONLD

JSONLD

Build 2

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

GitHubOrganization

GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

StatusPage

StatusPage

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: google-chat
name: Google Chat
description: The Google Chat API enables building Chat apps that integrate with Google Chat. It provides RESTful access to
  manage Chat spaces, memberships, messages, reactions, attachments, and custom emojis. The API supports creating conversational
  bots, automating messaging workflows, and managing organizational chat resources programmatically.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Freemium
  confidence: medium
  source:
  - plans
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/google-chat.png
url: https://raw.githubusercontent.com/api-evangelist/google-chat/refs/heads/main/apis.yml
created: '2026-03-13'
modified: '2026-05-19'
specificationVersion: '0.23'
type: Index
tags:
- Chat
- Collaboration
- Google
- Google Workspace
- Messaging
- Spaces
apis:
- aid: google-chat:google-chat-customemojis-api
  name: Google Chat customEmojis API
  description: The customEmojis API from Google Chat — 1 operation(s) for customemojis.
  humanURL: https://developers.google.com/workspace/chat/api/guides
  baseURL: https://chat.googleapis.com
  tags:
  - CustomEmojis
  tags_raw:
  - customEmojis
  properties:
  - type: OpenAPI
    url: openapi/google-chat-customemojis-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/chat/api/guides
  - type: Authentication
    url: https://developers.google.com/workspace/chat/authenticate-authorize
  - type: GettingStarted
    url: https://developers.google.com/workspace/chat/quickstart/apps-script
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-chat:google-chat-google-chat-api-api
  name: Google Chat Google Chat API API
  description: The Google Chat API API from Google Chat — 1 operation(s) for google chat api.
  humanURL: https://developers.google.com/workspace/chat/api/guides
  baseURL: https://chat.googleapis.com
  tags:
  - Google Chat API
  properties:
  - type: OpenAPI
    url: openapi/google-chat-google-chat-api-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/chat/api/guides
  - type: Authentication
    url: https://developers.google.com/workspace/chat/authenticate-authorize
  - type: GettingStarted
    url: https://developers.google.com/workspace/chat/quickstart/apps-script
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-chat:google-chat-members-api
  name: Google Chat Members API
  description: The Members API from Google Chat — 1 operation(s) for members.
  humanURL: https://developers.google.com/workspace/chat/api/guides
  baseURL: https://chat.googleapis.com
  tags:
  - Members
  properties:
  - type: OpenAPI
    url: openapi/google-chat-members-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/chat/api/guides
  - type: Authentication
    url: https://developers.google.com/workspace/chat/authenticate-authorize
  - type: GettingStarted
    url: https://developers.google.com/workspace/chat/quickstart/apps-script
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-chat:google-chat-messages-api
  name: Google Chat Messages API
  description: The Messages API from Google Chat — 1 operation(s) for messages.
  humanURL: https://developers.google.com/workspace/chat/api/guides
  baseURL: https://chat.googleapis.com
  tags:
  - Message
  tags_raw:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/google-chat-messages-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/chat/api/guides
  - type: Authentication
    url: https://developers.google.com/workspace/chat/authenticate-authorize
  - type: GettingStarted
    url: https://developers.google.com/workspace/chat/quickstart/apps-script
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-chat:google-chat-reactions-api
  name: Google Chat Reactions API
  description: The Reactions API from Google Chat — 1 operation(s) for reactions.
  humanURL: https://developers.google.com/workspace/chat/api/guides
  baseURL: https://chat.googleapis.com
  tags:
  - Reactions
  properties:
  - type: OpenAPI
    url: openapi/google-chat-reactions-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/chat/api/guides
  - type: Authentication
    url: https://developers.google.com/workspace/chat/authenticate-authorize
  - type: GettingStarted
    url: https://developers.google.com/workspace/chat/quickstart/apps-script
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-chat:google-chat-spaces-api
  name: Google Chat Spaces API
  description: The Spaces API from Google Chat — 1 operation(s) for spaces.
  humanURL: https://developers.google.com/workspace/chat/api/guides
  baseURL: https://chat.googleapis.com
  tags:
  - Spaces
  properties:
  - type: OpenAPI
    url: openapi/google-chat-spaces-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/chat/api/guides
  - type: Authentication
    url: https://developers.google.com/workspace/chat/authenticate-authorize
  - type: GettingStarted
    url: https://developers.google.com/workspace/chat/quickstart/apps-script
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
- aid: google-chat:google-chat-spaces-setup-api
  name: Google Chat Spaces:setup API
  description: The Spaces:setup API from Google Chat — 1 operation(s) for spaces:setup.
  humanURL: https://developers.google.com/workspace/chat/api/guides
  baseURL: https://chat.googleapis.com
  tags:
  - Spaces:setup
  properties:
  - type: OpenAPI
    url: openapi/google-chat-spaces-setup-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/chat/api/guides
  - type: Authentication
    url: https://developers.google.com/workspace/chat/authenticate-authorize
  - type: GettingStarted
    url: https://developers.google.com/workspace/chat/quickstart/apps-script
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
common:
- type: Website
  url: https://www.google.com/
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/google-chat/overview
- type: AgenticAccess
  url: agentic-access/google-chat-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/google-chat-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/google-chat-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/googleworkspace
- type: Portal
  url: https://developers.google.com/workspace/chat
- type: GettingStarted
  url: https://developers.google.com/workspace/chat/api/guides
- type: Authentication
  url: https://developers.google.com/identity/protocols/oauth2
- type: Pricing
  url: https://workspace.google.com/pricing
- type: TermsOfService
  url: https://developers.google.com/terms
- type: PrivacyPolicy
  url: https://policies.google.com/privacy
- type: StatusPage
  url: https://www.google.com/appsstatus/dashboard/
- type: Support
  url: https://developers.google.com/workspace/chat/support
- type: Blog
  url: https://workspaceupdates.googleblog.com/
- type: JSONLD
  url: json-ld/json-ld.jsonld
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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