# ReadX X/Twitter User Profile Lookup by ID

> ReadX X/Twitter User Profile Lookup by ID is a paid API for AI agents from readx.1x402.sh, paid per call via x402, $0.05/call, status down (last checked 2026-09-15).

Fetches a Twitter/X user profile by numeric user ID via a pay-per-call JSON API using x402 micropayments

## Facts

- Endpoint: GET https://readx.1x402.sh/api/user/%7Bid%7D
- Price: $0.05/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/readx-x-twitter-user-profile-lookup-by-id-c3c66764
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_0WfKBmAPVWTPa9XUSl6rF

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-x-twitter-user-profile-lookup-by-id-c3c66764
```

Example prompt: Can you pull up the Twitter profile for user ID 44196397 — I want to see their bio, follower count, and username?

## When to prefer this

Use this endpoint when you need to look up a specific Twitter/X user profile by numeric ID without holding Twitter API credentials, and you are willing to pay $0.05 USDC per call via x402 micropayments on Base or Solana. Ideal for agents that need on-demand, low-volume Twitter profile lookups without managing API key subscriptions.

## Known failure modes

- Invalid or non-existent user ID returns an error code in the JSON response
- Payment failure (insufficient USDC balance or x402 handshake error) returns HTTP 402
- Rate limiting or upstream X/Twitter unavailability may return an error
- Malformed ID path parameter results in a 400 or error JSON response

## How this service works

ReadX is a read-only X/Twitter JSON API. Profiles, timelines, tweets, search, lists, followers & following — pay per call with x402 micropayments in USDC on Base or Solana. No API keys.

## Output

Returns a JSON object with code 0 on success and a data object containing the user's public profile information including username, display name, bio, follower/following counts, tweet count, and other public account metadata.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "code": 0,
  "data": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/readx-x-twitter-user-profile-lookup-by-id-c3c66764/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from readx.1x402.sh](https://www.zero.xyz/host/readx.1x402.sh/llms.txt)