Available · Apple notarized BuildAPlugin API workspace on macOS
Universal macOS app Apple Silicon and Intel

Free download

BuildAPlugin macOS Public Beta

A local API client for building, sending, saving, and inspecting requests—plus optional JavaScript plugins that turn repeated API work into focused internal tools.

FreeNo payment method required
  • Signed by Melvin Ollewagen and notarized by Apple
  • No account, email address, checkout, or payment method required
  • Bot-protected download link expires after five minutes
  • Production build with no beta expiry deadline
Download for macOS

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What is included

Local API clientRequests, headers, bodies, responses, collections, variables, imports, and exports.
Optional workflow pluginsAdd focused UI, commands, request hooks, and automation in inspectable CommonJS JavaScript.
API + device workflowsCombine requests with Bluetooth, media, files, secure storage, system information, and platform diagnostics.

Install BuildAPlugin

1. Download Click Download for macOS. No account or email address is required.
2. Install Open BuildAPlugin-macOS-1.0.0-build12.zip and drag Build A Plugin.app into Applications.
3. Launch Open the app normally; the notarized build is accepted by Gatekeeper.
4. Report bugs Use the in-app feedback button or support form.