Next.js route tool

Generate a raw-body-safe Next.js payment webhook handler.

Pick a provider and copy an App Router handler with raw-body signature verification, event dispatch boundaries, idempotency guard notes, and a Vitest duplicate replay starter.

Handler inputs

provider + route + storage

Generated output

handler, env, test, review


          

        

      


      

        

          Raw body
          Uses request.text() before JSON parsing
        

        

          Retry safety
          Idempotency key before side effects
        

        

          Cost
          No provider API calls
        

        

          Upgrade
          Free sample plus CNY 69 Pro Kit preview
        

      


      

        

          
From route to release

          
Use the generator for one route, then upgrade when the launch needs fixtures and CI.

          

            The Pro Kit packages route handlers, fake provider fixtures, signature tests, duplicate replay tests, review templates, and launch checklists so a payment webhook change can ship with less manual glue.
          

        

        

          
            Download the free sample
            Inspect one fake Lemon Squeezy fixture, one Next.js handler, and three local tests.
          
          
            Preview the CNY 69 Pro Kit
            Review the 29-file package, 12 verified tests, manifest, checksum, and runbooks before live checkout is connected.
          
          
            Generate replay cURL commands
            Replay the generated handler with signed fake payloads.