Social profile ingest via SociaVault on social.gedx402.com — POST { platform, handle? | user_id? | url? | channelId? | subreddit? } or GET ?platform=&handle=. Platforms: tiktok, instagram, youtube, twitter, facebook, linkedin, reddit, threads. x402 settlement USDC per request (see npm run pricing:report). Hero: GET /heroes/social-profile.