Imagine it. Model it. Use it live.

Say what you want to keep track of. Diesel turns it into a model, and the model is already a working app, with your data in it.

  1. 1

    Imagine

    I follow a few gold juniors: the companies, their deposits, and what I hold in my portfolio.
    Got it. A portfolio holds your shares in companies, and each company owns deposits.

    In your own words, or talking it through with AI.

  2. 2

    Model

    ✦ drafted by AI holds * of owns * Portfolioname, currency Holdingshares, cost Companyticker, stage Depositcommodity, place

    Drafted by AI from what you said: the things you track and how they link. Change it by talking, or by hand.

  3. 3

    Create live

    My gold juniors

    Updated 2 minutes ago
    Frostline Resources+4.2%drill results due Oct
    Copperhead Mining−1.1%dividend paid
    North Royalty & Streaming+0.6%new royalty signed

    A working app, right away. No code, no screens to design.

For hobby users For app creators For power users
For hobby users

Your own app, with your data behind it.

For you, your family, your club.

Tell diesel what you keep track of and get a working app: lists, pages, maps and alerts, filled with your own data. Change your mind and the app changes with it.

Start an app
Opening soon.

Pick an app to see it. Each one is just a model and your data.

/app/Portfolio
DescribeIn plain words, or talk it through with AI.
UseLists, pages, maps and editors appear right away.
KeepYour data stays yours, and grows with the app.
For app creators

Describe a domain. Use the app it becomes, right away.

For people who build apps and think in models.

Model your domain with AI, see it as a graph, and work with live objects the moment a class exists. Sketch draft views, mock APIs by example, then wire behaviour in with rules, flows and streams. Work on a live specification, not an abstract one!

5 minutesFrom a 20-class model to a working, navigable app, with zero code. That's the bar.
Open the domain browser See the model graph

Tap a class. Its screens already exist.

owns * of Deposit Company Holding
/app/Company

Generated from the model. No screens were designed for this.

ModelClasses, keys and references, drafted with AI, editable as text or as a diagram.
RunLists, object pages, maps and editors, live from the model, no build step.
OrchestrateSequential rules for the everyday, flows for parallel steps, streams when you need them.
For power users

Prototype big domains, rules and APIs, fast.

For architects and teams prototyping enterprise-grade domain models and functionality.

Specs and stories live in readable pages, code sits in small strict blocks, and every story is a test. Mock APIs by example, orchestrate with rules and flows, and prove the model before anyone writes production code.

Open the fiddle Read the spec

The same portfolio, as source.


    

  

  

    
WriteProse first, with small blocks of rules where they're explained.

    
MockDescribe an API by example before it exists.

    
TestStories double as acceptance tests that keep running.

  






  

    
Extras

    
More ways to live with diesel.

  






  

    

      Living notebook
      
Keep everything you work on with AI in one living notebook.

      
For you, your hobby, or your small team.

      
Your chats with AI produce good stuff: plans, answers, lists, little tools. Then it scrolls away. Diesel keeps it, links it, and keeps it fresh, so next week you pick up where you left off.

      

        Investment portfolioRiding trailsHome budget
        Garden planResearch notesClub schedule
      

      Start a notebook
      
Opening soon.

    

    

      

        
        
        
      

      

    

  

  

    
CapturesWhat you and your AI make, without copy and paste.

    
ConnectsNotes, documents and the things you track, like companies, trades or trails, linked to each other.

    
Stays aliveNumbers refresh, alerts fire, and pages rearrange as things change. Describe your world, get an app.

  






  

    

      Works with Obsidian
      
Prefer writing in Obsidian? Keep writing there.

      
Your notes and guides can live in your Obsidian vault and in diesel at the same time. Edit on either side, sync, and both stay the same.

      
    
        
  • Two-way sync: changes flow in both directions.
    • 
        
  • Plain markdown files, exactly as they are in diesel. Nothing extra added to your notes.
    • 
        
  • If both sides changed, you get both copies to compare. Nothing is ever overwritten or deleted behind your back.
    • 
        
  • Works on laptops and on the iPad.
    • 
      

      

        Get the Diesel Sync plugin
      

      
Install it in Obsidian with the BRAT plugin: add razie/obsidian-diesel-sync.

    

    

      

        
Your vault

        
Diesel/
  metals/
    Topic/
      Buying rules.md
      Gold juniors.md
  Cards/

      

      
      

        
In diesel

        
Buying rules

        
Linked from My gold juniors and 2 other notes