---
title: "Add deployer(s) to the sniper watchlist (Ultra)"
method: POST
path: "/sniper/watchlist"
tags: ["Sniper"]
---

# Add deployer(s) to the sniper watchlist (Ultra)

`POST /sniper/watchlist`

## Request

- Base URL: `https://madeonsol.com/api/v1`
- URL: `https://madeonsol.com/api/v1/sniper/watchlist`
- Auth: HTTP bearer

Add one deployer (`wallet`) or many (`wallets`, max 50) with an optional `label`. Idempotent. ULTRA/BUSINESS/ENTERPRISE.

## Request body

- object
  - `wallet` string
  - `wallets` string[]
  - `label` string

## Response `200`

Added (or all already present)

- object
  - `added` integer: Number of deployers newly added
  - `deployers` string[]: Wallet addresses just added — present when added > 0
  - `message` string: Present instead of deployers when every requested wallet was already on the watchlist

## Other responses

- `400`: Invalid body
- `401`: Missing or invalid API key, or an expired free-tier key. Authentication-stage error: no `X-RateLimit-*` headers, no `_rid`.
- `403`: ULTRA, BUSINESS or ENTERPRISE subscription required
- `409`: Watchlist limit (50) exceeded
- `429`: Too many requests. Every 429 carries `Retry-After`. A quota 429 (`rate_limit_exceeded`, with `X-RateLimit-*`), a heavy-query concurrency 429 (`error_kind` `concurrency`/`capacity`), or the per-IP authentication-failure block (30 failed auths/min; plain `error` + `retry_after_seconds`, no `X-RateLimit-*`).
- `500`: Unexpected server error from the route (`Internal server error`, with `_rid`). Safe to retry with backoff. A failed API-key lookup is a 503 `auth_backend_unavailable`, never a 500.
- `503`: The API-key or subscription lookup could not be answered (authentication stage). Retryable and not your fault: it is never counted as a failed authentication. Honour `Retry-After`; no `X-RateLimit-*`, no `_rid`.

---

[API](https://skmtc.dev/madeonsol/apis/madeonsol-api.md) · [All operations](https://skmtc.dev/madeonsol/apis/madeonsol-api/llms.txt) · [OpenAPI document](https://skmtc.dev/madeonsol/apis/madeonsol-api/revisions/d9531a28d83b?raw)