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GitmoapAPIBeta
Reviewreviewers
POST/repositories/{repo_id}/merge-requests/{mr_id}/reviewers

Add a reviewer to a merge request

add_reviewer
  • reviewer:manage
    A token needs the reviewer:manage scope: Add and remove merge-request reviewersGranted by mcp_agent_write, write_api, write_repository.Every operation this scope unlocks
  • Audited · mutation

    x-gitmoap-audit: {"kind":"audited","arg":"mutation"}

  • Quota · reviewers per mr

    x-gitmoap-quota: {"kind":"enforced","arg":"reviewers_per_mr"}

Asks a person to review the merge request. The reviewer must be able to read it, so asking someone who cannot is refused.

Parameters

Path
  • repo_idRepositoryId (string · uuid)Repository ID
  • mr_idMergeRequestId (integer · int64)Merge request ID

Request body

application/json
  • reviewer_idReviewerId (string · uuid)
Request body exampleSynthesized example
{
"reviewer_id": "b7e2d1c0-9f8e-4d7c-a6b5-c4d3e2f1a0b9"
}

Responses

201Reviewer addedapplication/json
  • auth_methodReviewAuthMethodsessiontokenunknownHow the review was made: through a sign-in session or with an access token. An approval rule may count only the first.
  • created_atstring
  • merge_request_idMergeRequestId (integer · int64)
  • principal_kindPrincipalKinduserservice_accountagentA person or a service account.
  • repository_idRepositoryId (string · uuid)
  • review_statusReviewStatuspendingapprovedrejected
  • reviewerActorSummaryDenormalized reviewer snapshot (write-time enrichment)
  • stalebooleanWhether this reviewer's approval predates the current source-branch tip (i.e. was cast against an older revision). Computed at read time; not stored. Purely informational — whether staleness blocks a merge is governed by the approval policy's reset_on_push, surfaced per approval in the merge check. Always present in responses; it is recomputed on every read.
  • approved_at_shaCommitHash (string) or nulloptional
  • reviewed_atstring or nulloptional
201 exampleSynthesized example
{
"auth_method": "session",
"created_at": "2026-10-10T14:29:47Z",
"merge_request_id": 42,
"principal_kind": "user",
"repository_id": "5b0e7c2a-9d14-4e8b-a6f1-2c3d4e5f6a70",
"review_status": "pending",
"reviewer": {
"email": "tomas@acme.example",
"id": "id-a41d",
"username": "mara",
"avatar_url": "https://gitmoap.example/acme/650e4b6a"
},
"stale": false,
"approved_at_sha": "ff07724cbe4e30814ebadef89057427736635616",
"reviewed_at": "2026-10-09T01:14:31Z"
}
400Invalid requestapplication/json
Error codes
  • BAD_REQUESTThe request is malformed: a parameter or a body field is not a well-formed value of its type
  • errorErrorBody
    • The ErrorBody schema
    • codestringThe coarse category, tied to the status: NOT_FOUND, CONFLICT, INSUFFICIENT_SCOPE. Every error has one; the API reference's error catalogue lists them all.
    • messagestringWhat went wrong, for a person. Written to be read, not parsed: match on reason or code.
    • fieldstring or nulloptionalOn a 400 that refused one field's value, the field, as its JSON path: email, items[0].name. Put the message under that input. Absent on every other error.
    • reasonstring or nulloptionalThe specific code, when the error has one: LAST_ORGANIZATION_OWNER, BRANCH_PROTECTED. The message starts with it too. Match on this when it is present, and on code otherwise.
    • required_scopestring or nulloptionalThe scope the access token was missing, on INSUFFICIENT_SCOPE.
    • violationsanyoptionalPresent on the structured-validation errors (PROVIDER_VALIDATION_FAILED per-node, PIPELINE_VALIDATION_FAILED DAG): a JSON array of the offending elements, so a caller can fix every one in a single round-trip. Absent (omitted) on every other error.
400 exampleSynthesized example
{
"error": {
"code": "code-093a",
"message": "Stream pipeline status into the run header"
}
}
401Unauthenticated — no credential, or an invalid oneapplication/json
Error codes
  • UNAUTHORIZEDNo credential was sent, or the one sent is invalid, expired or revoked
  • errorErrorBody
    • The ErrorBody schema
    • codestringThe coarse category, tied to the status: NOT_FOUND, CONFLICT, INSUFFICIENT_SCOPE. Every error has one; the API reference's error catalogue lists them all.
    • messagestringWhat went wrong, for a person. Written to be read, not parsed: match on reason or code.
    • fieldstring or nulloptionalOn a 400 that refused one field's value, the field, as its JSON path: email, items[0].name. Put the message under that input. Absent on every other error.
    • reasonstring or nulloptionalThe specific code, when the error has one: LAST_ORGANIZATION_OWNER, BRANCH_PROTECTED. The message starts with it too. Match on this when it is present, and on code otherwise.
    • required_scopestring or nulloptionalThe scope the access token was missing, on INSUFFICIENT_SCOPE.
    • violationsanyoptionalPresent on the structured-validation errors (PROVIDER_VALIDATION_FAILED per-node, PIPELINE_VALIDATION_FAILED DAG): a JSON array of the offending elements, so a caller can fix every one in a single round-trip. Absent (omitted) on every other error.
401 exampleSynthesized example
{
"error": {
"code": "code-1427",
"message": "Stream pipeline status into the run header"
}
}
403Forbidden — the caller's access level or token scope is insufficientapplication/json
Error codes
  • FORBIDDENYou are signed in but may not do this here; reason names the permission or the rule that refused it
  • INSUFFICIENT_SCOPEThe access token lacks the scope this operation needs; required_scope names it
  • PERMISSION_REQUIREDYou need a permission you do not hold here; the message names it
  • errorErrorBody
    • The ErrorBody schema
    • codestringThe coarse category, tied to the status: NOT_FOUND, CONFLICT, INSUFFICIENT_SCOPE. Every error has one; the API reference's error catalogue lists them all.
    • messagestringWhat went wrong, for a person. Written to be read, not parsed: match on reason or code.
    • fieldstring or nulloptionalOn a 400 that refused one field's value, the field, as its JSON path: email, items[0].name. Put the message under that input. Absent on every other error.
    • reasonstring or nulloptionalThe specific code, when the error has one: LAST_ORGANIZATION_OWNER, BRANCH_PROTECTED. The message starts with it too. Match on this when it is present, and on code otherwise.
    • required_scopestring or nulloptionalThe scope the access token was missing, on INSUFFICIENT_SCOPE.
    • violationsanyoptionalPresent on the structured-validation errors (PROVIDER_VALIDATION_FAILED per-node, PIPELINE_VALIDATION_FAILED DAG): a JSON array of the offending elements, so a caller can fix every one in a single round-trip. Absent (omitted) on every other error.
403 exampleSynthesized example
{
"error": {
"code": "code-22e0",
"message": "Pin a page's payload to the build that rendered it"
}
}
404The merge request or the reviewer does not existapplication/json
Error codes
  • NOT_FOUNDThe resource does not exist — or exists and you cannot see it: a private resource you have no access to answers exactly as an absent one does
  • errorErrorBody
    • The ErrorBody schema
    • codestringThe coarse category, tied to the status: NOT_FOUND, CONFLICT, INSUFFICIENT_SCOPE. Every error has one; the API reference's error catalogue lists them all.
    • messagestringWhat went wrong, for a person. Written to be read, not parsed: match on reason or code.
    • fieldstring or nulloptionalOn a 400 that refused one field's value, the field, as its JSON path: email, items[0].name. Put the message under that input. Absent on every other error.
    • reasonstring or nulloptionalThe specific code, when the error has one: LAST_ORGANIZATION_OWNER, BRANCH_PROTECTED. The message starts with it too. Match on this when it is present, and on code otherwise.
    • required_scopestring or nulloptionalThe scope the access token was missing, on INSUFFICIENT_SCOPE.
    • violationsanyoptionalPresent on the structured-validation errors (PROVIDER_VALIDATION_FAILED per-node, PIPELINE_VALIDATION_FAILED DAG): a JSON array of the offending elements, so a caller can fix every one in a single round-trip. Absent (omitted) on every other error.
404 exampleSynthesized example
{
"error": {
"code": "code-4215",
"message": "Label every synthesized example"
}
}
409The request conflicts with the resource's current state; `reason` says howapplication/json
Error codes
  • CONFLICTThe request conflicts with the resource's current state; reason says how
  • LEGAL_ACCEPTANCE_REQUIREDAccept the current Terms of Service before changing anything; reading stays open
  • errorErrorBody
    • The ErrorBody schema
    • codestringThe coarse category, tied to the status: NOT_FOUND, CONFLICT, INSUFFICIENT_SCOPE. Every error has one; the API reference's error catalogue lists them all.
    • messagestringWhat went wrong, for a person. Written to be read, not parsed: match on reason or code.
    • fieldstring or nulloptionalOn a 400 that refused one field's value, the field, as its JSON path: email, items[0].name. Put the message under that input. Absent on every other error.
    • reasonstring or nulloptionalThe specific code, when the error has one: LAST_ORGANIZATION_OWNER, BRANCH_PROTECTED. The message starts with it too. Match on this when it is present, and on code otherwise.
    • required_scopestring or nulloptionalThe scope the access token was missing, on INSUFFICIENT_SCOPE.
    • violationsanyoptionalPresent on the structured-validation errors (PROVIDER_VALIDATION_FAILED per-node, PIPELINE_VALIDATION_FAILED DAG): a JSON array of the offending elements, so a caller can fix every one in a single round-trip. Absent (omitted) on every other error.
409 exampleSynthesized example
{
"error": {
"code": "code-5ec4",
"message": "Label every synthesized example"
}
}
422The reviewer cannot read this merge requestapplication/json
Error codes
  • errorErrorBody
    • The ErrorBody schema
    • codestringThe coarse category, tied to the status: NOT_FOUND, CONFLICT, INSUFFICIENT_SCOPE. Every error has one; the API reference's error catalogue lists them all.
    • messagestringWhat went wrong, for a person. Written to be read, not parsed: match on reason or code.
    • fieldstring or nulloptionalOn a 400 that refused one field's value, the field, as its JSON path: email, items[0].name. Put the message under that input. Absent on every other error.
    • reasonstring or nulloptionalThe specific code, when the error has one: LAST_ORGANIZATION_OWNER, BRANCH_PROTECTED. The message starts with it too. Match on this when it is present, and on code otherwise.
    • required_scopestring or nulloptionalThe scope the access token was missing, on INSUFFICIENT_SCOPE.
    • violationsanyoptionalPresent on the structured-validation errors (PROVIDER_VALIDATION_FAILED per-node, PIPELINE_VALIDATION_FAILED DAG): a JSON array of the offending elements, so a caller can fix every one in a single round-trip. Absent (omitted) on every other error.
422 exampleSynthesized example
{
"error": {
"code": "code-6f33",
"message": "Stream pipeline status into the run header"
}
}
429Reviewer limit reached for this merge requestapplication/json
Error codes
  • TOO_MANY_REQUESTSRetryableA quota, a rate limit or a transfer budget is spent. When the response carries Retry-After, retry after that many seconds
  • errorErrorBody
    • The ErrorBody schema
    • codestringThe coarse category, tied to the status: NOT_FOUND, CONFLICT, INSUFFICIENT_SCOPE. Every error has one; the API reference's error catalogue lists them all.
    • messagestringWhat went wrong, for a person. Written to be read, not parsed: match on reason or code.
    • fieldstring or nulloptionalOn a 400 that refused one field's value, the field, as its JSON path: email, items[0].name. Put the message under that input. Absent on every other error.
    • reasonstring or nulloptionalThe specific code, when the error has one: LAST_ORGANIZATION_OWNER, BRANCH_PROTECTED. The message starts with it too. Match on this when it is present, and on code otherwise.
    • required_scopestring or nulloptionalThe scope the access token was missing, on INSUFFICIENT_SCOPE.
    • violationsanyoptionalPresent on the structured-validation errors (PROVIDER_VALIDATION_FAILED per-node, PIPELINE_VALIDATION_FAILED DAG): a JSON array of the offending elements, so a caller can fix every one in a single round-trip. Absent (omitted) on every other error.
429 exampleSynthesized example
{
"error": {
"code": "code-8ecf",
"message": "Stream pipeline status into the run header"
}
}

CLI

gitmoap reviewers add

  • --repo-ididRepository ID (id or owner/repo path)
  • --mr-ididMerge request ID
  • --reviewer-idstring

Used in these guides