X Username

Looks up a public X profile by username, wrapping the read-only X API v2 user-by-username route.

Overview

Looks up a public X profile by username, wrapping the read-only X API v2 user-by-username route. Accepts a handle with or without @ and returns id, username, display name, bio, verification fields, created_at, followers, following, tweet count, and listed count. Requires X_BEARER_TOKEN; no posting, replying, liking, following, or account mutation. Use it as a Twitter username lookup, handle resolver, public profile lookup, or follower count API.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/x-username	$0.00575	Invoke X Username (Blockchain) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/x-username \
  -H 'Content-Type: application/json' \
  -d '{}'

# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/x-username \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace