---
title: "Set Fsmasky username"
method: POST
path: "/v1/competitions/fsmasky-pnl-challenge/username"
tags: ["Competition"]
---

# Set Fsmasky username

`POST /v1/competitions/fsmasky-pnl-challenge/username`

## Request

- Base URL: `https://api.testnet.rise.trade`
- URL: `https://api.testnet.rise.trade/v1/competitions/fsmasky-pnl-challenge/username`
- Auth: none required
- TypeScript: <https://skmtc.dev/rise/apis/risex-rest-api/docs/v1/competitions/fsmasky-pnl-challenge/username/post.ts> (a function with typed inputs; its response is checked against the schema)

Set a username for a wallet in the Fsmasky competition cohort. Fails with PERMISSION_DENIED if the wallet isn't in the cohort. The wallet stays off the Fsmasky leaderboard until this is called.

## Request body

- ApiSetFsmaskyUsernameRequest
  - `wallet` string: Wallet address (0x-prefixed). Must already be in the Fsmasky cohort whitelist.
  - `username` string

## Response `200`

A successful response.

- ApiSetFsmaskyUsernameResponse
  - `wallet` string
  - `username` string

## Other responses

- `default`: An unexpected error response.

## Changes

- **2026-11-03** `98eabcd6a6ad`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/rise/apis/risex-rest-api/changes/v1/competitions/fsmasky-pnl-challenge/username/post.md)

---

[API](https://skmtc.dev/rise/apis/risex-rest-api.md) - [All operations](https://skmtc.dev/rise/apis/risex-rest-api/llms.txt) - [OpenAPI document](https://skmtc.dev/rise/apis/risex-rest-api/revisions/98eabcd6a6ad?raw)