Farcaster

Sign In with Farcaster (SIWF)

Authentication flow that lets users sign in to third-party apps with their Farcaster identity, returning a verified FID and optional profile data. Backed by EIP-4361-style signed messages.

Sign In with Farcaster (SIWF) is one of 6 APIs that Farcaster publishes on the APIs.io network.

Tagged areas include Authentication, SIWF, and Identity. The published artifact set on APIs.io includes API documentation.

GitHub

Documentation

📖
Documentation
https://docs.farcaster.xyz/developers/siwf

API entry from apis.yml

apis.yml Raw ↑ 
aid: farcaster:siwf
name: Sign In with Farcaster (SIWF)
description: Authentication flow that lets users sign in to third-party apps with their Farcaster identity,
  returning a verified FID and optional profile data. Backed by EIP-4361-style signed messages.
humanURL: https://docs.farcaster.xyz/developers/siwf
baseURL: https://docs.farcaster.xyz/developers/siwf
tags:
- Authentication
- SIWF
- Identity
properties:
- type: Documentation
  url: https://docs.farcaster.xyz/developers/siwf