v.13

Pace Maker 13: every HTTP method, with a request body editor

Pace Maker now load-tests write endpoints too. Pick any HTTP method, compose a request body in the new Load tab, and watch your API under real POST, PUT, PATCH, or DELETE traffic.

What's new

• All HTTP methods: GET, HEAD, POST, PUT, PATCH, DELETE, and OPTIONS, chosen with the new Method picker in Settings
• Load tab: a new tab next to Chart, Stats, and Texts for the request body
  • Content types: JSON, form, plain text, or XML
  • Syntax highlighting for JSON and XML as you type, in Light and Dark Mode
  • A live check shows the body size and whether your JSON is valid
  • Quotes and dashes stay exactly as you type them; macOS no longer turns " into curly quotes
  • For GET, HEAD, and OPTIONS the tab explains that no body is sent and offers a one-click switch to POST
• Content-Type is set for you from the chosen content type, unless you add your own under Headers
• Safety reminder: methods that change data show a note to point them at a test environment
• Texts tab shows the full request, including the method and body

Fixed

• Header name suggestions didn't appear on macOS 27
• The ZIP download now unzips straight to PaceMaker.app, and the DMG includes an Applications shortcut for drag-to-install

Requirements

macOS 14 or later on Apple Silicon. Downloads are signed with a Developer ID and notarized by Apple.

Downloads

File	SHA-256
PaceMaker-13.dmg	fe3d334476a8d4de82a23cfb618bdd052c96803ed4a95ed2433d392cfe3826cf
PaceMaker-13.zip	b73efc7ff38ac753274836f2fffc8edb97c7fb732716a4eb4dcde255bbe4f932