Update a label

Change a label's name, color or description; only the fields given change.

PATCH/repos/{owner}/{name}/labels/{label}

Renaming it renames it on every issue and pull request that carries it. Needs the Write role or higher; applying labels and milestones needs Triage.

Renaming a label renames it on every issue and pull request that carries it.

Authentication: Required. Send an access token as Authorization: Bearer.
MCP tool: repository with action update_label, and the same inputs
Scope: An access token needs issues:write.

Path parameters

Name	Type	Required	Description
`owner`	string	Yes	The workspace that owns the repository.
`name`	string	Yes	The repository’s name.
`label`	string	Yes	The label’s name, e.g. “good first issue”. URL-encode spaces in the path.

Body parameters

Send a JSON object. Names are snake_case, as in responses; the camelCase spelling is accepted too.

Name	Type	Required	Description
`new_name`	string	No	Rename it, on everything that carries it.
`color`	string	No	Six hex digits.
`description`	string	No	An empty string clears it.

Example request

curl -X PATCH https://api.g1t.sh/repos/flagon-io/hello/labels/area%3A%20cli \
  -H "Authorization: Bearer $G1T_TOKEN" \
  -H "Content-Type: application/json" \
  -d '{
    "new_name": "cli",
    "color": "0052cc"
  }'

Example response

A successful request answers 200 with:

{
  "name": "cli",
  "color": "0052cc",
  "description": "The command-line tool",
  "issues": 3,
  "pulls": 1
}

Errors

A failed request answers with one of these statuses and a body like {"error": {"code": "not_found", "message": "Repository not found."}}. See errors.

Status	Code	When
401	`unauthenticated`	A token is required, or the one sent is not valid.
403	`forbidden`	The token is valid but not allowed to do this, such as a member-only change or an agent token outside its repository.
404	`not_found`	It does not exist, or you cannot see it.
409	`conflict`	The request conflicts with the current state.
422	`invalid`	The input is not valid. `message` says which field and why.