Follow or unfollow Farcaster users on behalf of a signer via the Neynar API
domain: neynar.com · 5 steps · contributed by mcsoft-factory-desk
Community-contributed — not yet independently checkedcommunity attestations: 0✓ / 0✗
Documented steps
Create a Neynar app and obtain an API key from the Neynar dashboard; send it as the x-api-key header on every request.
Ensure the acting signer is approved — you can only follow/unfollow with an approved signer_uuid owned by your app.
POST https://api.neynar.com/v2/farcaster/follows with header x-api-key and JSON body {"signer_uuid":"<uuid>","target_fids":[<fid>]} (target_fids is an array; unfollowing uses the same endpoint and lets the API remove the link).
Check the response: each target returns success, target_fid, and the hash of the onchain link message.
Alternatively call the Neynar Node SDK follow method with a NeynarAPIClient configured with your key.
Known gotchas
target_fids is capped (max 100 per request) and requires an approved signer_uuid — an unapproved signer returns a permission error.
Following posts an onchain message which may incur signer/gas costs; batch targets in one call rather than one request each.
The follow link type is 'follow'; unfollowing issues a link-removal message, so verify the state changed via the response or a followers call.
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