Update a project label

PATCH/api/v2/workspaces/{slug}/project-labels/{pk}/

Change a project label's name, color, description, or position. Projects that carry the label keep it. Only workspace owners and admins can update project labels.

PATCH is partial. Send only the fields you want to change. Anything you omit keeps its current value.

Path Parameters

slug:requiredstring

The workspace slug. It appears in your Plane URLs. In https://app.plane.so/my-team/projects/, the slug is my-team.

pk:requiredstring (uuid)

The id of the project label to update.

Body Parameters

Every field is optional. Send the subset you are changing.

name:optionalstring

New display name. Maximum 255 characters. A name that another label uses, in any letter case, returns 409 conflict with that label's id. You can send the label's own name in any letter case.

color:optionalstring

Hex color used wherever the label is rendered. Maximum 255 characters. Can be empty.

description:optionalstring

Free-form note about what the label is for. Can be empty.

sort_order:optionalnumber

Ordering weight. Lower values sort first. Set it to reposition the label in the default list order.

Response shaping

fields:optionalstring

Comma-separated list of fields to return. Unrequested keys are omitted from the response, not returned as null, so absent means "not requested" and null means "actually null". id always comes back whether or not you name it.

Pass all for every requestable field. An unknown name is a 400 that lists the valid set and suggests the closest match, so a typo can't silently cost you the saving.

Requestable here: color, created_at, created_by_id, description, id, name, sort_order, updated_at, updated_by_id.

See Sparse fields.

Scopes

workspaces.project_labels:write

Errors

Status	Code	Cause
400	invalid_request	A field failed validation, for example an empty name or a value over its length limit.
401	unauthorized	Missing or invalid credentials.
402	payment_required	The feature this endpoint belongs to isn't enabled on your plan, or is switched off.
403	forbidden	Only workspace owners and admins can update project labels, or your token lacks the scope.
404	not_found	No such project label or workspace, or it's outside your tenant.
406	not_acceptable	The Accept header asks for a representation the API can't produce.
409	conflict	Another project label already uses this name, in any letter case. The body carries its id.
409	governance_migration_in_progress	A governance migration is running, so the workspace is read-only. Retry after it finishes.
413	payload_too_large	The request body is over the size limit.
415	unsupported_media_type	The Content-Type isn't one this endpoint accepts.
429	rate_limited	Throttled. Honor the Retry-After header before retrying.

Update a project label

curl -X PATCH \
  "https://api.plane.so/api/v2/workspaces/my-team/project-labels/d8a4f2c6-1e7b-4093-9c5a-6b2e0f8d3a71/" \
  -H "X-Api-Key: $PLANE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "name": "Roadmap 2026",
  "color": "#8e4ec6"
}'

import requests

response = requests.patch(
    "https://api.plane.so/api/v2/workspaces/my-team/project-labels/d8a4f2c6-1e7b-4093-9c5a-6b2e0f8d3a71/",
    headers={"X-Api-Key": "your-api-key"},
    json={
        "name": "Roadmap 2026",
        "color": "#8e4ec6",
    },
)
print(response.json())

const response = await fetch(
  "https://api.plane.so/api/v2/workspaces/my-team/project-labels/d8a4f2c6-1e7b-4093-9c5a-6b2e0f8d3a71/",
  {
    method: "PATCH",
    headers: {
      "X-Api-Key": "your-api-key",
      "Content-Type": "application/json",
    },
    body: JSON.stringify({
      name: "Roadmap 2026",
      color: "#8e4ec6",
    }),
  },
);
const data = await response.json();

Response200

{
  "id": "d8a4f2c6-1e7b-4093-9c5a-6b2e0f8d3a71",
  "name": "Roadmap 2026",
  "description": "Projects committed on this year's roadmap",
  "color": "#8e4ec6",
  "sort_order": 65535,
  "created_at": "2026-01-14T09:22:41.478363Z",
  "updated_at": "2026-02-03T16:45:12.904117Z",
  "created_by_id": "16c61a3a-512a-48ac-b0be-b6b46fe6f430",
  "updated_by_id": "16c61a3a-512a-48ac-b0be-b6b46fe6f430"
}

Response409

{
  "type": "conflict",
  "code": "conflict",
  "detail": "A project label with this name already exists in this workspace.",
  "id": "2b6e9d14-7c3a-4f85-b0e2-9a1d5c8f6e37"
}