# Twitter Surf – User Mentions Feed

> Twitter Surf – User Mentions Feed is a paid API for AI agents from twitter.surf.cascade.fyi, paid per call via x402, $0.004/call, status unknown (last checked 2026-09-14).

Retrieves a paginated list of tweets mentioning a specific Twitter/X user (sibylcap) via the twitter.surf proxy

## Facts

- Endpoint: GET https://twitter.surf.cascade.fyi/users/sibylcap/mentions
- Price: $0.004/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/twitter-surf-cascade-fyi-e713763b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fdg1noyNnihC2DZBPzQhV

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-e713763b
```

Example prompt: Can you pull the latest tweets mentioning @sibylcap on Twitter? Grab the first page and if there are more, use the pagination cursor to get the next batch.

## When to prefer this

Use this endpoint when you need to retrieve mention activity for the specific user @sibylcap via the twitter.surf cascade proxy, particularly when building monitoring pipelines, engagement trackers, or conversation analysis tools that rely on x402 micropayment-gated Twitter data access.

## Known failure modes

- No mentions found — returns empty list if user has no recent mentions
- Invalid or expired pagination cursor — may return error or restart from beginning
- Rate limiting or payment failure — 402 payment required if x402 payment header is missing or insufficient
- User not found — if the username in the path does not exist
- Upstream Twitter API error — twitter.surf proxy may fail if Twitter API is unavailable

## How this service works

User mentions

## Output

A paginated list of tweets that mention the user @sibylcap, including tweet content, metadata, and a pagination cursor to retrieve subsequent pages of mentions.

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "_truncated",
  "_originalSize"
 ],
 "properties": {
  "_truncated": {
   "type": "boolean"
  },
  "_originalSize": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/twitter-surf-cascade-fyi-e713763b/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)