Here's an idea for a Farcaster startup: 

- Sell labels for Farcaster accounts 
- Accounts can have multiple labels (e.g. airdrop farmer, onchain transctor)  
- Labels can be either binary or a confidence score (0 to 1) 

Warpcast would pay to use this service if you did a good job.

Technowatermelon. Elder Millenial. Building Farcaster. 

nf.td/varun

By labels I don't mean generic stuff like "proof of human" which is largely uninteresting. 

Labels should be valuable to a specific company building on FC. For example: 

- Onchain spender (useful to anyone launching a mint) 
- Geopolitics caster (useful for Warpcast feed algorithms) 
- Automated account

etc...

Other mistake people make is trying to giga-brain it by automating fully or applying LLMs. 

This is really, really hard and unlikely to work. Start by manually labelling with heuristics and sell the data. 

If its working, try to develop a basic ML-model using some common features.

Other mistake people make is trying to put it onchain. This is a bad idea because: 

1. Onchain is harder to use than a REST API 
2. Labels change often, and revoking on chain is hard
3. People get mad when you take away something you gave them