{"name":"x-handle-availability","description":"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.","price":"$0.005","method":"POST","input_schema":{"properties":{"username":{"type":"string","description":"X/Twitter handle to check, with or without @, e.g. 'launchforge'."}},"required":["username"]},"input_example":{"username":"launchforge"},"output_example":{"username":"launchforge","available":true,"status":"not_found","source":"X API v2 user lookup"},"x402_payment_required":true,"x402_facilitator":"https://api.cdp.coinbase.com/platform/v2/x402"}