MCP Tools Reference: developerconnect.googleapis.com

Tool: add-repo-pull-request-review-comment

Add a review comment (inline on diff) to a pull request.

The following code sample shows how to use curl to call the add-repo-pull-request-review-comment MCP tool.

Curl Request 
curl --location 'https://developerconnect.googleapis.com/mcp' \
--header 'content-type: application/json' \
--header 'accept: application/json, text/event-stream' \
--data '{
  "method": "tools/call",
  "params": {
    "name": "add-repo-pull-request-review-comment",
    "arguments": {
      // Provide these details according to the MCP tool specification.
    }
  },
  "jsonrpc": "2.0",
  "id": 1
}'

Input Schema

Request message for AddGitRepositoryLinkPullRequestReviewComment.

AddGitRepositoryLinkPullRequestReviewCommentRequest

JSON representation 
{
  "name": string,
  "pullRequestId": string,
  "comment": {
    object (PullRequestReviewComment)
  },
  "commitId": string
}
Fields
name

string

Required. The resource name of the GitRepositoryLink in the format projects/*/locations/*/connections/*/gitRepositoryLinks/*.
pullRequestId

string

Required. The ID of the Pull Request.
comment

object (PullRequestReviewComment)

Required. The review comment to add.
commitId

string

Optional. The commit SHA to comment on. If not specified, defaults to the HEAD commit of the Pull Request.

PullRequestReviewComment

JSON representation 
{
  "id": string,
  "body": string,
  "path": string,
  "firstLine": integer,
  "lastLine": integer,
  "side": enum (DiffSide),
  "author": string,
  "createTime": string,
  "updateTime": string,
  "commitId": string
}
Fields
id

string

Output only. The ID of the comment.
body

string

Required. The body of the comment.
path

string

Required. The file path to comment on.
firstLine

integer

Optional. The first line of the comment range (inclusive). If not specified, the comment applies only to the last_line.
lastLine

integer

Required. The last line of the comment range (inclusive). If first_line is not specified, the comment applies only to this line.
side

enum (DiffSide)

Optional. The side of the diff to comment on. Defaults to HEAD.
author

string

Output only. The username of the author.
createTime

string (Timestamp format)

Output only. When the comment was created.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
updateTime

string (Timestamp format)

Output only. When the comment was updated.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
commitId

string

Output only. The commit SHA the comment was actually applied to.

Timestamp

JSON representation 
{
  "seconds": string,
  "nanos": integer
}
Fields
seconds

string (int64 format)

Represents seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z. Must be between -62135596800 and 253402300799 inclusive (which corresponds to 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z).
nanos

integer

Non-negative fractions of a second at nanosecond resolution. This field is the nanosecond portion of the duration, not an alternative to seconds. Negative second values with fractions must still have non-negative nanos values that count forward in time. Must be between 0 and 999,999,999 inclusive.

DiffSide

DiffSide represents which side of the diff the comment is on.

Enums
DIFF_SIDE_UNSPECIFIED Default value. This value is unused.
BASE The side of the diff before changes (deleted or modified lines).
HEAD The side of the diff after changes (added or modified lines).

Output Schema

Message representing a SCM Pull Request Review Comment (inline on diff).

PullRequestReviewComment

JSON representation 
{
  "id": string,
  "body": string,
  "path": string,
  "firstLine": integer,
  "lastLine": integer,
  "side": enum (DiffSide),
  "author": string,
  "createTime": string,
  "updateTime": string,
  "commitId": string
}
Fields
id

string

Output only. The ID of the comment.
body

string

Required. The body of the comment.
path

string

Required. The file path to comment on.
firstLine

integer

Optional. The first line of the comment range (inclusive). If not specified, the comment applies only to the last_line.
lastLine

integer

Required. The last line of the comment range (inclusive). If first_line is not specified, the comment applies only to this line.
side

enum (DiffSide)

Optional. The side of the diff to comment on. Defaults to HEAD.
author

string

Output only. The username of the author.
createTime

string (Timestamp format)

Output only. When the comment was created.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
updateTime

string (Timestamp format)

Output only. When the comment was updated.

Uses RFC 3339, where generated output will always be Z-normalized and use 0, 3, 6 or 9 fractional digits. Offsets other than "Z" are also accepted. Examples: "2014-10-02T15:01:23Z", "2014-10-02T15:01:23.045123456Z" or "2014-10-02T15:01:23+05:30".
commitId

string

Output only. The commit SHA the comment was actually applied to.

Timestamp

JSON representation 
{
  "seconds": string,
  "nanos": integer
}
Fields
seconds

string (int64 format)

Represents seconds of UTC time since Unix epoch 1970-01-01T00:00:00Z. Must be between -62135596800 and 253402300799 inclusive (which corresponds to 0001-01-01T00:00:00Z to 9999-12-31T23:59:59Z).
nanos

integer

Non-negative fractions of a second at nanosecond resolution. This field is the nanosecond portion of the duration, not an alternative to seconds. Negative second values with fractions must still have non-negative nanos values that count forward in time. Must be between 0 and 999,999,999 inclusive.

DiffSide

DiffSide represents which side of the diff the comment is on.

Enums
DIFF_SIDE_UNSPECIFIED Default value. This value is unused.
BASE The side of the diff before changes (deleted or modified lines).
HEAD The side of the diff after changes (added or modified lines).

Tool Annotations

Tool annotations are sent to MCP clients to describe the basic risk of a given tool. Most clients treat these hints as untrusted, but they can be used to decide when a confirmation prompt might be sent to a user.

Along with the title string, the following boolean hints are defined as follows:

  • readOnlyHint: If true, the tool doesn't modify its environment. Default: false.
  • destructiveHint: If true, then the tool can perform destructive actions. If false, then the tool can only perform additive actions. Default: true.
  • idempotentHint: If true, then calling the tool repeatedly with the same arguments will have no additional effect on its environment. Default: false.
  • openWorldHint: If true, then the tool can interact with an 'open world' of external entities. If false, then the tool can only interact with internal entities. For example, a web search tool would be open world, while a memory tool would not be open world.

Destructive Hint: ❌ | Idempotent Hint: ❌ | Read Only Hint: ❌ | Open World Hint: ❌