MassCode – A local-first dev workspace, your data is plain Markdown
Plain Markdown storage keeps your snippets portable when SnippetsLab locks you in.

Plain text storage like Bruno, but the UI tweaks don't justify switching from established tools.
Backend developers, API engineers
Bruno · Postman · Insomnia
Now I am really trying to pay attention to the developer experience with carefully put ui interactions and shortcuts.
it is built with tauri so it is fast and small.
some of the features:
It can sync with open api and update the requests as they change. it also provides better auto complete and linting when a spec is present.
it is local and everything is stored in text files the same way that they are shown in the app itself.
all the envs are defined in one file so you can scan them easily.
it does support scripts and also standalone scripts that don't require a request, which are called actions
Plain Markdown storage keeps your snippets portable when SnippetsLab locks you in.
10MB Julia IDE with full LSP and debugger beats VSCode's 300MB bloat.
Exactly-once execution guard for AI agents—request-ID dedup prevents duplicate emails, tickets, payouts.
x402 wire-protocol means zero code changes to add per-request payments.
Local-first API client when Bruno and Hoppscotch already own this space.
Mount APIs as filesystems via FUSE; clever for agents and shell muscle-memory.