# ReadX List Timeline

> ReadX List Timeline is a paid API for AI agents from readx.sh, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).

Retrieves the combined tweet timeline for all accounts in a specified X/Twitter list, with pagination support

## Facts

- Endpoint: GET https://readx.sh/api/lists/:id/timeline
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/readx-list-timeline-7321f5a3
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iQycCWjWZSDQaUSO5tP5I

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 readx-list-timeline-7321f5a3
```

Example prompt: Fetch the latest tweets from X list ID 1583921 — and if there's a pagination cursor from last time, use it to get the next page of results.

## When to prefer this

Use this endpoint when you need to read the aggregated tweet feed of a curated X/Twitter list, especially for monitoring multiple accounts simultaneously. Prefer this over individual user timeline endpoints when you have a pre-curated list of accounts and want a single merged feed. Ideal for news monitoring, tracking industry voices, or following a topic through a managed list.

## Known failure modes

- Invalid list ID (non-numeric) returns a 400 or validation error
- List not found or private list returns a 404 or access denied error
- Missing required id parameter causes request rejection
- Invalid or expired pagination cursor returns an error or resets to first page
- Payment failure (x402) returns 402 Payment Required
- Rate limiting or upstream X API issues may cause 429 or 503 responses

## How this service works

The combined timeline of every account in a list. Example: GET /api/lists/1/timeline

## Output

A combined chronological tweet timeline containing posts from all accounts in the specified X list, including tweet text, author details, timestamps, engagement metrics, and a pagination cursor for fetching subsequent pages.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "id"
     ],
     "properties": {
      "id": {
       "type": "string",
       "pattern": "^[0-9]+$",
       "description": "Numeric resource id."
      },
      "cursor": {
       "type": "string",
       "description": "Pagination cursor from a previous response's pagination.bottom (or replies.bottom)."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/readx-list-timeline-7321f5a3/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from readx.sh](https://www.zero.xyz/host/readx.sh/llms.txt)