Google Messages API is one of 125 APIs that Google publishes on the APIs.io network, described by a machine-readable OpenAPI specification.
Tagged areas include Message. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a getting-started guide, and an API reference.
This API exposes
8 operations
across 6 paths,
and defines 23 schemas.
It is described by OpenAPI 3.1.0, at version 1.0.0.
Requests are made against a single base URL, https://www.googleapis.com/books/v1.
8 operations6 paths23 schemas1 DELETE2 GET5 POST
Metadata
The identity and technical contract details declared by the specification.
Google Messages API declares
1 security scheme
for authenticating requests.
It supports OAuth 2.0 (OAuth2) using the authorizationCode flow, exposing 1 scope.
OAuth2 — OAuth 2.0 authentication for Google Books API
Paths & Operations 8
Across 6 paths, the API surfaces 8 operations — 1 DELETE, 2 GET, 5 POST. Each is listed below with its method, path, parameters, and response codes.
Messages 8
Operations related to Messages
POST
/gmail/v1/users/{userId}/messages/{id}/untrash
Google Untrash Messages
3 paramsbody→ 200
POST
/gmail/v1/users/{userId}/messages/{id}/modify
Google Modify Messages
4 paramsbody→ 200
POST
/gmail/v1/users/{userId}/messages/import
Google Import Messages
3 paramsbody→ 200
POST
/gmail/v1/users/{userId}/messages/send
Google Send Messages
3 paramsbody→ 200
GET
/gmail/v1/users/{userId}/messages
Google List Messages
5 params→ 200
POST
/gmail/v1/users/{userId}/messages
Google Insert Messages
3 paramsbody→ 200
GET
/gmail/v1/users/{userId}/messages/{id}
Google Get Messages
3 params→ 200
DELETE
/gmail/v1/users/{userId}/messages/{id}
Google Delete Messages
2 params→ 204
Schemas 23
The contract defines 23 schemas that model the data the API accepts and returns. The most detailed are GmailUsersMessagesPostResponse (9 properties), UsersMessagesImportPostResponse (9 properties), UsersMessagesUntrashPostResponse (9 properties), UsersMessagesModifyPostResponse (9 properties). Each schema is shown below with its type and property counts.
Every API here is available over the API and to AI agents over MCP. APIs is not yet its own endpoint on the v1 API. Reach this content through network search and the tag graph, or the MCP server below.
Installs https://mcp.apievangelist.com/mcp in Claude, Cursor, VS Code and the rest — one button, every client.
MCP tools for apis
4 tools reach this content
search_api_evangelistSearch every content type across the network at once.
find_relatedThe shared-tag relevance graph — what else covers this.
get_tagEverything one tag labels, across all content types.
guide_topicPRO — a curated bundle for a topic: area, guidance, rules, papers, stories, services.
A second provider on the same verified email joins the account you already have.
Your account
ⓘWhere this information came from
This is an independent, third-party profile of Google Messages API, published by
API Evangelist. We do not operate, host, resell, or
support these APIs, and we are not affiliated with or endorsed by the company unless stated above.
Everything here is built from publicly available information — the company's own site,
developer portal, documentation, public repositories, and the specifications it publishes for public use.
Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's
public API artifacts, scored against a published rubric. They are not certifications,
endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and
you do not need to justify the request. A removed company is recorded as unrated, never scored
zero for having asked. Acknowledgement within one business day; removal within two.
info@apievangelist.com
·
Read the full data-sourcing policy → On a security or compliance team? Put security in the subject line and
you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.
