Post a cast (message) to Farcaster via Neynar API. Use this to share updates, announcements, or engage with the Farcaster community. Supports channels, threading (replies), and embeds (max 2 URLs). Max 1024 characters. Ideal for: price alerts, milestone announcements, community updates, automated social posts.

Retrieve detailed Farcaster social cast data from Grapevine's decentralized x402 protocol gateway. Returns complete cast information including author profiles, engagement metrics, embedded content, and thread context from the Farcaster network. | Input: No input parameters required - the endpoint returns data for the specific CID (bafkreidqv3tidl72maqfrnzpgo6bjjbm5agwv5auvhyqjvhsxmmvmwsjwa) encoded in the URL | Output: Returns complete Farcaster cast data including author profile (username, display name, follower count, verified addresses), cast content, engagement metrics (likes, recasts, replies), embedded casts/links, channel information, and thread hierarchy | Use cases: I need to retrieve a specific Farcaster cast with full author and engagement details; Get complete cast metadata including embedded content and thread information; Fetch Farcaster social data for analysis or archival purposes; Access decentralized cast records via the Grapevine x402 payment gateway | Cost: 0.01 on base