A place for developers to talk about building on Farcaster.

/dev

Neynar

Introducing semantic search of casts! 🪐

In the `cast/search` route, you can now specify a `mode`, which can be `literal` (searches text for the same words), `semantic` (uses vectors to find casts with similar meaning), or `hybrid` (a combination of literal and semantic).

Try it out and let us know if you have questions!

https://docs.neynar.com/reference/search-casts

Big upgrade on the cast search API today - semantic search

We're storing millions of vectors, each vector made within seconds of when a cast hits the network. When a semantic or hybrid search is performed, we get the vector for the search query, find the casts with vectors that are closest in vector space and insert in the API response. 

Up next:
- algorithmic ranking of search results (right now its desc chron only) so the best results show at the top
- any necessary latency improvements

Feedback is useful as always 🪐

Big upgrade on the cast search API today - semantic search

We're storing millions of vectors, each vector made within seconds of when a cast hits the network. When a semantic or hybrid search is performed, we get the vector for the search query, find the casts with vectors that are closest in vector space and insert in the API response. 

Up next:
- algorithmic ranking of search results (right now its desc chron only) so the best results show at the top
- any necessary latency improvements

Feedback is useful as always 🪐

https://docs.neynar.com/reference/search-casts

building farcaster infra @ /neynar 🪐 casting @ /rish

Will vectors also be available through your indexing service?

Say I'm fetching a list of casts for a feed or in this case a search. 

If I have some custom user metadata in another table in my db I would like to fetch along with each author of each cast (rank, xp level, points balance, etc...) its much more performant and cost effective to just make that relation in my db and get all the data I need in a single request

Not a specific need atm but something I could see being useful in the future