{"schema":"draconic21.social_trends_pulse_availability.v1","available":true,"price_usdc":0.015,"source":"Hacker News + GitHub + Mastodon + Wikipedia (live, each cached 10-30min independently)","note":"No snapshot to go stale — every paid call aggregates fresh trending topics across up to 4 free public sources, deduped/merged across sources. POST { sources?: subset of [hackernews, lobsters, mastodon, wikipedia], limit?: 1..20 } — omit both for all 4 sources, top 10 merged topics."}