---
title: "Add or update a tournament staff member"
method: POST
path: "/tournaments/{identifier}/staff"
tags: ["Tournament: Staff & Invites"]
---

# Add or update a tournament staff member

`POST /tournaments/{identifier}/staff`

Grants a user the ADMIN or MODERATOR staff role on the tournament. Requires the tournaments staff capability and ADMIN authority - strictly higher than the MANAGER floor for reading the roster, so a tournament MODERATOR answers 403 and cannot promote themselves. Upserts by user: posting a role for someone who already holds a staff row updates that row instead of creating a second one, so this endpoint is safely retryable and also serves as the change-role operation. A MODERATOR gains the manager-floor endpoints (application review, participant removal and disqualification, free-agent pool moderation) but none of the admin-floor ones.

## Path parameters

- `identifier` string, required — Tournament slug.

## Request body

- TournamentAddStaffBody — Tournament staff addition payload.
  - `userId` string, required — User ID of the staff member to add.
  - `role` 'ADMIN' | 'MODERATOR', required — Tournament staff role.

## Response `200`

The staff member was added or their role updated.

- TournamentWriteAck — Acknowledgement returned by the tournament write endpoints whose backing operation has nothing to return - the organizer writes (endpoints 22-34), the team roster writes (40, 41), and the competitor self actions that neither mint nor resolve a row (38, 39, 44, 45, 47). Endpoints that mint a row answer with that row's id instead, and the two respond endpoints (42, 46) answer with the decision they recorded.
  - `success` true, required — Always true; failures are error responses.
  - `timestamp` string, required — Response generation time (ISO 8601).

## Other responses

- `400` — Bad request (invalid body, cursor, limit, or date).
- `401` — Missing or invalid API key.
- `403` — API key lacks the required permission.
- `404` — Resource not found.
- `429` — Rate limited.
- `500` — Internal server error.

---

[API](https://skmtc.net/teambattles/apis/teambattles-api.md) · [All operations](https://skmtc.net/teambattles/apis/teambattles-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/teambattles/teambattles-api/versions/2ffe8fb53b7d/schema)