Google Gmail

The Gmail API lets you view and manage Gmail mailbox data like threads, messages, and labels. It provides RESTful access to Gmail mailboxes, supporting message sending, drafting, organizing with labels, managing settings, and push notifications for mailbox changes. The API uses OAuth 2.0 for authorization and supports both user and service account authentication for Google Workspace domains.

Google Gmail publishes 1 API contract indexed on the APIs.io network. Tagged areas include Drafts, Email, Gmail, Google, and Google Workspace.

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

Google Gmail’s developer surface includes developer portal, getting-started guide, documentation, authentication, pricing, support, engineering blog, and 13 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

44.1/100 developing ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemium

1 published contract

Drafts Email Gmail Google Google Workspace Labels Messaging Threads

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 44.1/100 · developing

Contract Quality 10.4 / 19

Developer Ergonomics 7.7 / 15

Access Clarity 4.3 / 15

Operational Transparency 3.6 / 10

Contract Governance 0.9 / 9

Discoverability 5.0 / 8

Regulatory Posture 4.6 / 15

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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document

9 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Access Clarity scores 28.9 — up to +14.2 composite points
Contract Quality scores 55.6 — up to +11.1 composite points
Contract Governance scores 9.8 — up to +10.8 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/google-gmail/apis.yml: open an issue on github.com/api-evangelist/google-gmail to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

OpenAPI

measured — observed by APIs.io (published)

APIs 1

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

Google Gmail API

The Gmail API from Google Gmail — 19 operation(s) for gmail.

Postman Collections 1

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

Google Gmail API

POSTMAN

Open Collections 2

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

Google Gmail API

OPEN COLLECTION

Google Gmail API

OPEN COLLECTION

Google Gmail API pricing

Not yet checked against Google Gmail's own pricing page. Compiled by API Evangelist on 2026-05-04; confirm before you rely on a figure. A free plan or tier is listed.

Plan	Price
Free freemium	Free
Professional paid	Free
Enterprise enterprise	—

Plan details, limits and sources →

Rate limits

Free Tier Default: 10 requests per minute
Free Tier Monthly Quota: 1000 requests per month
Professional Tier Default: 100 requests per minute

Compiled by API Evangelist, not yet checked against Google Gmail's documentation. All 5 limits →

Pricing Plans 1

Published pricing tiers and plan structures.

Google Gmail Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Google Gmail Rate Limits

5 limits

RATE LIMITS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

Google Gmail

SLA

FinOps 1

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

Google Gmail Finops

FINOPS

Semantic Vocabularies 1

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

Json Ld Context

6 classes · 5 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Google Gmail — jsonschema rules

6 rules · 4 warnings 2 info

SPECTRAL

Security Posture 2

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

Google Gmail Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Google Gmail Vulnerability Disclosure

security.txt · contact published

SECURITY

Agentic Access 1

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

Google Gmail Agentic Access

29 operations · 17 acting · 1 human-in-the-loop

29 operations · 17 acting

AGENTIC

Resources

Get Started 2

Portal, sign-up, and the first successful call

Portal

Portal

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

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 3

Status, limits, changes, and where to get help

RateLimits

RateLimits

StatusPage

StatusPage

Support

Support

Commercial 5

Pricing, plans, and the legal terms of use

Plans

FinOps

Pricing

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: google-gmail
name: Google Gmail
description: The Gmail API lets you view and manage Gmail mailbox data like threads, messages, and labels. It provides RESTful
  access to Gmail mailboxes, supporting message sending, drafting, organizing with labels, managing settings, and push notifications
  for mailbox changes. The API uses OAuth 2.0 for authorization and supports both user and service account authentication
  for Google Workspace domains.
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: low
  source:
  - plans
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/google-gmail.png
url: https://raw.githubusercontent.com/api-evangelist/google-gmail/refs/heads/main/apis.yml
created: '2026-03-13'
modified: '2026-09-16'
specificationVersion: '0.23'
type: Index
tags:
- Drafts
- Email
- Gmail
- Google
- Google Workspace
- Labels
- Messaging
- Threads
apis:
- aid: google-gmail:google-gmail-gmail-api
  name: Google Gmail API
  description: The Gmail API from Google Gmail — 19 operation(s) for gmail.
  humanURL: https://developers.google.com/workspace/gmail/api/guides
  baseURL: https://gmail.googleapis.com
  tags:
  - Gmail
  properties:
  - type: OpenAPI
    url: openapi/google-gmail-gmail-api-openapi.yml
  - type: Documentation
    url: https://developers.google.com/workspace/gmail/api/reference/rest
  - type: Authentication
    url: https://developers.google.com/workspace/gmail/api/auth/about-auth
  - type: GettingStarted
    url: https://developers.google.com/workspace/gmail/api/guides
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.jsonld
common:
- type: Plans
  url: plans/google-gmail-plans-pricing.yml
- type: RateLimits
  url: rate-limits/google-gmail-rate-limits.yml
- type: FinOps
  url: finops/google-gmail-finops.yml
- type: Website
  url: https://www.google.com/
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/google-gmail/overview
- type: AgenticAccess
  url: agentic-access/google-gmail-agentic-access.yml
- type: VulnerabilityDisclosure
  url: security/google-gmail-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/google-gmail-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/googleworkspace
- type: Portal
  url: https://developers.google.com/workspace/gmail
- type: GettingStarted
  url: https://developers.google.com/workspace/gmail/api/guides
- type: Documentation
  url: https://developers.google.com/workspace/gmail/api
- type: Authentication
  url: https://developers.google.com/workspace/gmail/api/auth/about-auth
- type: Pricing
  url: https://developers.google.com/workspace/gmail/api/guides/quota
- type: TermsOfService
  url: https://developers.google.com/terms
- type: PrivacyPolicy
  url: https://policies.google.com/privacy
- type: StatusPage
  url: https://status.cloud.google.com/
- type: Support
  url: https://developers.google.com/workspace/gmail/api/support
- type: JSONLD
  url: json-ld/json-ld.jsonld
- url: https://blog.google/products/gmail/rss/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: google
x-relationship: product

Google Gmail API — frequently asked questions

Does Google Gmail have an API?

Yes. APIs.io lists 1 API from Google Gmail, including Google Gmail API.

Is there an OpenAPI specification for the Google Gmail API?

Yes. APIs.io indexes 1 OpenAPI specification for Google Gmail, each linked for download from this page.

How do I authenticate with the Google Gmail API?

Google Gmail uses bearer-token authentication.

How much does the Google Gmail API cost?

APIs.io lists 3 pricing plans for Google Gmail, with each plan's price, limits and inclusions under Pricing on this page.

Is the Google Gmail API ready for AI agents?

Google Gmail has a Kin Score of 44.1 out of 100 (developing) and an Agent Readiness score of 19.6 (agent-aware), scored by API Evangelist on 2026-11-06.

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get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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