Membrane.

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A fast, powerful way to write internal tools in TypeScript, connecting the apps you already use at work.

Outgoing HTTP requests can be routed through an exit-node under your control. This is crucial when talking to APIs that implement IP-based rate limits, services behind a firewall, or to inject your own credentials privately.

Simply run mctl exit-node on any computer and Membrane will route all outgoing traffic through it while the command is running.

You can pass a script or program with --transformer. The script can modify or inject new headers. For example, inject an API key in the Authorization header. The script (or program) receives the request headers as JSON via stdin and outputs the modified headers in stdout.

A fast, powerful way to write internal tools in TypeScript, connecting the apps you already use at work.

Durable Programs ....................................................................................................0

Cron Jobs and Timers ....................................................................................................

Membrane Web IDE ....................................................................................................2

The Graph ....................................................................................................

Graph-based Access Control ....................................................................................................4

Observability ....................................................................................................

Instantanous Deploys ....................................................................................................6

Step Debugger ....................................................................................................

Custom Exit Nodes ....................................................................................................8

Outgoing HTTP requests can be routed through an exit-node under your control. This is crucial when talking to APIs that implement IP-based rate limits, services behind a firewall, or to inject your own credentials privately.

Simply run mctl exit-node on any computer and Membrane will route all outgoing traffic through it while the command is running.

You can pass a script or program with --transformer. The script can modify or inject new headers. For example, inject an API key in the Authorization header. The script (or program) receives the request headers as JSON via stdin and outputs the modified headers in stdout.

HTTP Endpoints ....................................................................................................9

Open Source Drivers (APIs) ....................................................................................................10

Code completion ....................................................................................................

SMS Reminders ....................................................................................................

Discord Weather Bot ....................................................................................................1

Mailchimp Alerts ....................................................................................................2

Follow Hacker News Users ....................................................................................................3

Airtable changes to Email ....................................................................................................4

Twitter Bot ....................................................................................................5

HTMX Form ....................................................................................................

Github Weekly Report ....................................................................................................7

Github Action Alert ....................................................................................................8

Github Commits on Discord ....................................................................................................9

Track HN Jobs in Google Sheets ....................................................................................................10

Mailchimp to airtable ....................................................................................................11

If you're curious about Membrane's architecture, Juan joined the devtools.fm podcast to talk through the nuts and bolts.

2024-12-20 Automating changelogs Automating Membrane changelogs with Membrane
2024-12-13 Changelog 0.14 Custom IDE theme; collapse all types
2024-12-11 Stripe subscription webhooks A program to handle Stripe webhooks
2024-12-10 Slack signup alerts A program to send signup alerts on Slack
2024-12-06 Changelog 0.13 Program REPL, simplified IDE
2024-11-22 Changelog 0.12 Renaming & deleting programs; faster TS diagnostics
2024-11-15 Changelog 0.11 IDE layout updates; search & explore packages by user
2024-11-08 Changelog 0.10 Saving editor settings; HTTP endpoint previews
2024-11-01 Changelog 0.9 Program cloning; embedded docs in IDE
2024-10-25 Changelog 0.8 Package publishing; Navigator action logs
2024-10-18 Changelog 0.7 Simpler onboarding, new templates; better types
2024-10-04 Changelog 0.6 IDE text selection; GitHub, Anthropic driver upgrades
2024-09-27 Changelog 0.5 Better npm support; package sharing upgrades
2024-09-13 Changelog 0.4 Navigator file explorer; share page improvements
2024-09-06 Changelog 0.3 Support npm package types; Logs back navigation
2024-08-30 Changelog 0.2 Logs UI upgrades and better onboarding UX (examples)
2024-08-23 Changelog 0.1 Improved Navigator context menu and driver install UX
2024-06-19 Public Roadmap A Membrane program to share what we're working on
2023-09-20 Progress Update #3 Simpler function signatures; built-in Google auth
2023-09-13 Progress Update #2 Windows support and OOM handling
2023-08-30 Progress Update #1 Internal logging architecture; improved HTTP UI
2023-08-14 Progress Update #0 Exit nodes and Program Replays

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