Membrane.

Simplify persistance

There's no need to connect a database (although you can!) because Membrane programs run in a durable JavaScript runtime.

That's right, we transparently persist memory changes so that you don't worry about loading and storing state.

Any JavaScript object can persist indefinitely because Membrane's execution timeout is effectively

Keep long-lived values in state.
import { state } from "membrane";
state.notes = state.notes ?? []
export async function saveNote({ args }) {
  state.notes.push(args.note);
}

Auditable

The most time-consuming part of bugfixing can often be reproducing the issue in the first place. We didn't like that, so we fixed it!

In Membrane, every side-effect is first written to the program's write-ahead log and then processed. HTTP requests and responses, source code changes, queries, etc are all program side-effects.

This log gives you clear understanding plus the ability to replay history so that reproducing bugs is a walk in the park.

Membrane logs are not just text output; they are the source of truth!

The Graph

In Membrane, each program defines a graph API to expose its data and functionality to other programs. You can think of the graph as objects that can be referenced by other programs, allowing you to easily compose functionality.

In this video we showcase the graph in a quick tour of the Membrane IDE.

We call API connectors drivers.

A driver is a regular Membrane program with the sole purpose of exposing an API and its types in your graph. Anyone can write or modify a driver and publish it as a Membrane package.

To install an existing driver, click "FIND PROGRAMS" in the top right of the Membrane IDE.

Need to connect to an API that doesn't have a driver yet? No problem, you can always use fetch directly. And feel free to reach out on discord or via emailto request new drivers.

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

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

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

We call API connectors drivers.

A driver is a regular Membrane program with the sole purpose of exposing an API and its types in your graph. Anyone can write or modify a driver and publish it as a Membrane package.

To install an existing driver, click "FIND PROGRAMS" in the top right of the Membrane IDE.

Need to connect to an API that doesn't have a driver yet? No problem, you can always use fetch directly. And feel free to reach out on discord or via emailto request new drivers.

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

Github Action Alert ....................................................................................................0

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

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

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

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

Github Commits on Discord ....................................................................................................5

Mailchimp to airtable ....................................................................................................6

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

Track HN Jobs in Google Sheets ....................................................................................................8

Twitter Bot ....................................................................................................9

Discord Weather Bot ....................................................................................................10

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

2025-04-23 Membrane Beta Announcing Beta: dashboard, Brane, completions, sys-db
2025-04-23 Brane Enter Membrane's intelligent assistant
2025-04-04 Changelog 0.20 Prepping for launch week
2025-04-02 Testing email verification Membrane + Playwright
2025-03-28 Changelog 0.19 Brane, inline completions, onboarding
2025-03-21 Changelog 0.18 Brane (AI), dashboard, sys programs, welcome tour
2025-01-31 Changelog 0.17 In development: dashboard, sys-db, LLM copilot
2025-01-24 10 unhappy users Scaling Membrane, or anything
2025-01-18 Membrane + Hono API router Pete's onsite hackathon project
2025-01-17 Exploring Browser Automation Thomas's onsite hackathon project
2025-01-10 Changelog 0.16 Type inference & more schema editor features
2025-01-09 Typewriter effect with pure CSS Smooth loadin'
2025-01-03 Changelog 0.15 Revamped docs, IDE polish
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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