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ReadX — Get Usernames by User ID
x402
ReadX — Get Usernames by User ID 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).
Looks up X/Twitter usernames (handles) for one or more numeric user IDs, returning a mapping of ID to username.
Price / call$0.01
Success—
StatusUnknown
How this service works
Resolve up to 20 numeric user ids to @usernames (map; null on per-id failure). Example: GET /api/tools/get_usernames?user_ids=12,44196397
Output
A JSON object with a 'data' field mapping numeric user IDs (as string keys) to their current X/Twitter usernames (handles). Null values indicate IDs that could not be resolved. Also returns a 'code' field (0 on success).
Example use cases
Resolve follower IDs to usernames
“I have a list of X user IDs from a dataset — can you look up their usernames so I know who these accounts actually are?”
Identify account behind a numeric ID
“Who owns X/Twitter user ID 12? Look up the username for me.”
Enrich analytics data with handles
“My analytics export has raw Twitter user IDs but no screen names — can you resolve these IDs to their current usernames so I can read the report properly?”
Technical details
Endpoint
GEThttps://readx.sh/api/tools/get_usernamesWhen to prefer
Use this endpoint when you have numeric X/Twitter user IDs and need to resolve them to human-readable usernames, without requiring X API credentials. Ideal for enriching datasets, analytics pipelines, or any workflow that surfaces raw X user IDs. Prefer over official X API when you want pay-per-call micropayment access with no key management.
Side effects
- Invalid or non-existent user ID returns null for that entry
- Malformed request returns a non-zero error code
- Payment failure (x402) if USDC balance is insufficient — endpoint returns 402 before processing
- Rate limits or upstream X API unavailability may cause transient errors
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| required | string | |
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"code": 0,
"data": {
"0": null,
"12": "jack",
"44196397": "elonmusk"
}
}
}Tags
x402
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