# Twitter User Profile Lookup - f9s216

> Twitter User Profile Lookup - f9s216 is a paid API for AI agents from twitter.surf.cascade.fyi, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14, last successful call 2026-05-27).

Retrieves the public Twitter profile and metadata for user f9s216 (frederick), including bio, metrics, and images, via a paid x402 micropayment endpoint.

## Facts

- Endpoint: GET https://twitter.surf.cascade.fyi/users/f9s216
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Last successful call: 2026-05-27
- Success rate: 100% of calls made through Zero
- Activations on Zero: 2
- Tags: x402
- Canonical page: https://www.zero.xyz/c/twitter-surf-cascade-fyi-f8b22e65
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_z1ovd6ebw__C5jlzORZkc

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 twitter-surf-cascade-fyi-f8b22e65
```

Example prompt: Can you pull up the Twitter profile for the user @f9s216 — I want to see their bio, follower count, how many tweets they've posted, and their profile picture?

## When to prefer this

Use this endpoint when you specifically need profile metadata for the Twitter user f9s216 — it is a fixed, single-user lookup endpoint rather than a general-purpose user search. Prefer it when you need structured public metrics (followers, tweets, likes) along with image URLs and bio for this specific account, and when you are operating in a Web3/crypto payment context using x402 micropayments.

## Known failure modes

- Payment failure: insufficient USDC balance or unsupported wallet results in 402 Payment Required
- User not found: if the hardcoded user f9s216 is deleted or suspended, returns an error or empty data
- Network timeout: upstream Twitter API unavailability causes delayed or failed response
- Rate limiting: repeated calls may be throttled by the upstream provider

## How this service works

Provides paid retrieval of Twitter user f9s216's profile and public metadata; accepts Solana and Ethereum (USDC) payments for access.

## Output

Returns a JSON object with the user's Twitter ID, display name (frederick), username (f9s216), account creation date, bio description, profile and cover image URLs, and public metrics including follower count, following count, tweet count, like count, and media count.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "data"
 ],
 "properties": {
  "data": {
   "type": "object",
   "required": [
    "id",
    "name",
    "username",
    "created_at",
    "description",
    "public_metrics",
    "cover_image_url",
    "profile_image_url"
   ],
   "properties": {
    "id": {
     "type": "string"
    },
    "name": {
     "type": "string"
    },
    "username": {
     "type": "string"
    },
    "created_at": {
     "type": "string"
    },
    "description": {
     "type": "string"
    },
    "public_metrics": {
     "type": "object",
     "required": [
      "like_count",
      "media_count",
      "tweet_count",
      "followers_count",
      "following_count"
     ],
     "properties": {
      "like_count": {
       "type": "number"
      },
      "media_count": {
       "type": "number"
      },
      "tweet_count": {
       "type": "number"
      },
      "followers_count": {
       "type": "number"
      },
      "following_count": {
       "type": "number"
      }
     }
    },
    "cover_image_url": {
     "type": "string"
    },
    "profile_image_url": {
     "type": "string"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/twitter-surf-cascade-fyi-f8b22e65/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from twitter.surf.cascade.fyi](https://www.zero.xyz/host/twitter.surf.cascade.fyi/llms.txt)