Merchant API v1beta was discontinued and shut down on February 28, 2026. For steps to transition to the latest stable version, see Migrate from v1beta to v1.

DevdocsMcpService

Service to handle requests for the Devdocs MCP server.

ForwardMcpMessage
`rpc ForwardMcpMessage(HttpBody) returns (HttpBody)` The ForwardMcpMessage message is for the old implementation of the MCP that acts like a proxy between the MAPI server and the GCP infrastructure. The other QueryMapiDocs and FindMapiCodeSample methods are equivalent but using OneMCP. Authorization scopes Requires the following OAuth scope: `https://www.googleapis.com/auth/content` For more information, see the OAuth 2.0 Overview.

ForwardMcpMessage

rpc ForwardMcpMessage(HttpBody) returns (HttpBody)

The ForwardMcpMessage message is for the old implementation of the MCP that acts like a proxy between the MAPI server and the GCP infrastructure. The other QueryMapiDocs and FindMapiCodeSample methods are equivalent but using OneMCP.

Authorization scopes

Requires the following OAuth scope:

https://www.googleapis.com/auth/content

For more information, see the OAuth 2.0 Overview.

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Last updated 2026-07-01 UTC.

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DevdocsMcpService