X Handle Availability

Checks whether an X handle is available, using a read-only X API v2 user-by-username check.

Overview

Checks whether an X handle is available, using a read-only X API v2 user-by-username check. Returns available=true when the handle is not found and available=false with public profile metrics when claimed. Requires X_BEARER_TOKEN; no posting, replying, liking, following, scraping, or account mutation. Use it as a Twitter username availability checker or social handle lookup for brand launch workflows.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/x-handle-availability	$0.00575	Invoke X Handle Availability (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-handle-availability \
  -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-handle-availability \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace