# FomoScan User Lookup by Handle

> FomoScan User Lookup by Handle is a paid API for AI agents from www.fomoscan.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Resolves a FOMO platform trader's profile by their public @handle, returning their stable user ID and verified wallet addresses.

## Facts

- Endpoint: GET https://www.fomoscan.dev/v2/user/handle/overdose_ai
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/fomoscan-user-lookup-by-handle-ed56c4ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_I4B38vI6kDzrxE1kZCXKv

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability fomoscan-user-lookup-by-handle-ed56c4ad
```

Example prompt: Can you look up the FOMO trader with handle overdose_ai and get me their stable user ID and any verified wallet addresses?

## When to prefer this

Use this endpoint when you have a FOMO trader's public @handle but not their stable numeric user ID. Prefer the handle-lookup endpoint over wallet-based or ID-based endpoints specifically when starting from a social username. Once you obtain the stable ID, persist it and use the ID-based endpoint for all subsequent calls to avoid issues if the user renames their handle.

## Known failure modes

- Handle not found — returns 404 if the handle does not exist or has been deleted
- Wrong input type — passing a wallet address or numeric ID will fail; this endpoint only accepts plain handles without the @ symbol
- Payment failure — if the x402 payment of 0.1 USDC cannot be completed, the call will be rejected
- Rate limiting — excessive calls may result in throttling

## How this service works

Resolve a FOMO trader by public handle (the @name on FOMO, without @). Use when you have a handle and not a stored user id. Returns id, handle, name, bio, and verified solanaAddress/evmAddress. Persist id — handles can change. Do not pass a wallet or numeric id.

## Output

Returns a JSON object containing the trader's stable numeric user ID, current handle, display name, bio, and their verified Solana and/or EVM wallet addresses. The stable ID should be persisted by the caller since handles can change over time.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/fomoscan-user-lookup-by-handle-ed56c4ad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.fomoscan.dev](https://www.zero.xyz/host/www.fomoscan.dev/llms.txt)