# s5 update #4

> 龴ↀ◡ↀ龴 qcast 龴ↀ◡ↀ龴

**Published by:** [deca12x](https://paragraph.com/@deca12x/)
**Published on:** 2024-06-30
**URL:** https://paragraph.com/@deca12x/s5-update-4

## Content

_tldr_studied & revised a lot of concepts and tools: neynar, nextjs vs express, fetch api, postman vs swagger.building toy version = cast from script, no frontendlast update _toy version_ 1. project setup - set up nextjs repo - structure folders like this https://nextjs.org/docs/getting-started/project-structure 2. write logic to connect signer, neynar api key, neynar client and post cast - first read docs for posting a cast https://docs.neynar.com/reference/post-cast then write all logic in one file neynar.ts but use these 2 github links as examples: - main logic will be similar to this (search createcast) https://github.com/builders-garden/pulse-api/blob/main/src/modules/farcaster/farcaster.service.ts - get neynar client from neynar api key https://github.com/builders-garden/pulse-api/blob/main/src/utils/neynar.ts 3. test the api call with postman - study this about fetching apis https://developer.mozilla.org/en-us/docs/web/api/fetch_api/using_fetch - set an endpoint and test with postman or swagger https://nextjs.org/docs/pages/building-your-application/routing/api-routes localhost3000/api/qcast ... this will call route.ts inside api/qcast _later_ 4. endpoint accept calls only from my frontend - to protect endpoint: create a x-secret in the .env - pass to the api - in postman headers (or in frontend headers later) set it to be the same 5. in my frontend, only specific farcaster user can call api - in page body, use neynar authentication so it gets the signeruuid from the fid authentication https://docs.neynar.com/docs/how-to-let-users-connect-farcaster-accounts-with-write-access-for-free-using-sign-in-with-neynar-siwn

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