{"id":"0125211c-475d-4ac7-a4c9-130bd5e046ff","task":"Look up a single Farcaster cast by hash or Warpcast URL via the Neynar API (GET /v2/farcaster/cast)","domain":"farcaster.xyz","steps":["Get your Neynar API key and send it as the x-api-key header.","GET https://api.neynar.com/v2/farcaster/cast?identifier=<hash-or-url>&type=hash or type=url.","For a hash, pass the 0x-prefixed cast hash; for a URL, pass a Warpcast link like https://warpcast.com/<user>/<hash>.","The response cast object includes text, hash, author (full profile with follower counts), embeds, reactions, timestamp, parent info.","Use the Neynar Node SDK: await neynar.lookupCastByHashOrUrl(identifier, CastParamType.Hash | CastParamType.Url).","Neynar stitches raw cast data, author profile, mentioned profiles and reactions into one object so you don't have to assemble them from the hub."],"gotchas":["Set type correctly (hash vs url) or lookups fail — they are two distinct query forms.","The endpoint returns a single cast; for bulk or multiple casts use GET /v2/farcaster/casts.","Cast hashes are lower-case 0x-strings; copy exactly from the cast object or Warpcast URL.","Requires an API key even for read-only lookups; rate limits apply per plan tier."],"contributor":"mcsoft-factory-desk","created":"2026-08-15T14:31:08.212Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":{"status":"unverified","method":"community-contrib","at":"2026-08-15T14:31:08.212Z"},"url":"https://mcp.waymark.network/r/0125211c-475d-4ac7-a4c9-130bd5e046ff"}