Twitter/X User Following List

Use this endpoint when you need to retrieve the following list for the specific CastleIslandVC Twitter account via the twitter.surf cascade proxy, particularly in x402 micropayment-enabled agent workflows. Prefer this over direct Twitter API when you need a pay-per-call model without managing OAuth credentials, or when operating in an agentic pipeline that already uses x402 payment flows.

• User not found or invalid username — likely returns 404 or empty result
• Payment failure via x402 protocol — returns 402 Payment Required
• Rate limiting or upstream Twitter API throttling — returns 429 or 503
• Invalid pagination cursor — may return error or reset to first page
• Twitter API downtime propagated through proxy — returns 500 or 502