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Morsewire
The API client that feels at home on your Mac.
Morsewire is what an API client looks like when it is built for the Mac rather than ported to it. It speaks HTTP, GraphQL, WebSocket, gRPC, Socket.IO, MQTT and SOAP, imports your existing Postman, Bruno and Insomnia collections in seconds, mocks the services that are not built yet, and stores everything as readable YAML you can review and diff in Git. No account, no cloud workspace, no tracking.
Coming soon to the Mac App StoreGet notified
Version 1.0 · macOS 14 Sonoma or later · Free · Pro $2.99/mo
Features
What Morsewire does
Every protocol in one client
HTTP, GraphQL, WebSocket, gRPC, Socket.IO, MQTT and SOAP — with environments, variables and auth built in rather than bolted on.
Import in seconds
Postman, Bruno, Insomnia, Thunder Client, HAR, cURL, OpenAPI, RAML and WSDL. Credentials found in those files go straight into your Keychain.
Mock what isn't built
Serve examples and rules from a local mock server so front-end work never waits on the back end.
Editor and validator
A fast YAML, JSON and spec editor with completion, schema validation, formatting and a live documentation preview.
Your existing scripts run as-is
Postman and Bruno pre-request and test scripts execute unchanged in a sandboxed runtime, assertions included.
Files, not a database
Collections are readable YAML on disk — reviewable in a pull request, diffable, and shareable through Git like any other source file.
Reference
Free and Pro
Everything needed for day-to-day API work is free. Pro covers automation and the deeper workflows, with a one-week trial for new subscribers.
| Capability | Free | Pro |
|---|---|---|
| All seven protocols | Yes | Yes |
| Import from Postman, Bruno, Insomnia, OpenAPI | Yes | Yes |
| Mock server | Yes | Yes |
| Spec editor, validation and docs preview | Yes | Yes |
| Postman and Bruno script runtime | Yes | Yes |
| Git sync to GitHub, GitLab or any host | — | Yes |
| Collection Runner, load tests, scheduled runs | — | Yes |
| Flows — chain requests on a visual canvas | — | Yes |
| HTTPS capture and AI assistant | — | Yes |
Specifications
The details
- Protocols
- HTTP, GraphQL, WebSocket, gRPC, Socket.IO, MQTT, SOAP
- Imports
- Postman, Bruno, Insomnia, Thunder Client, HAR, cURL, OpenAPI, RAML, WSDL
- Storage
- Plain YAML files on disk — no proprietary database
- Secrets
- Stored in the macOS Keychain, never in collection files
- Account
- None required — no cloud workspace, no tracking
- Pro pricing
- $2.99/month or $19/year, with a one-week free trial
- AI assistant
- Claude, using your own API key (Pro)
- Distribution
- Mac App Store
FAQ
Frequently asked questions
Morsewire is finished and going through Mac App Store review. It will be a free download with an optional Pro subscription — get in touch if you would like to hear the moment it is live.
Morsewire is almost here
Free · Pro $2.99/mo · No account, no telemetry, nothing leaves your Mac.