pxml is a monorepo containing:
| Package | Description | npm |
|---|---|---|
@two-tech-dev/pxml-core | Parser, codegen, test runner, fix loop, schema validation | @two-tech-dev/pxml-core |
@two-tech-dev/pxml | CLI (pxml init, pxml compile, pxml test, pxml fix, pxml validate, pxml studio) | @two-tech-dev/pxml |
@two-tech-dev/pxml-studio | ReactFlow web editor — visual graph builder, WebSocket compile, Settings, plugins | @two-tech-dev/pxml-studio |
Instead of writing free-form prompts, you specify your web application architecture in XML, manage modifications using a Manifest, and allow the AI to perform local self-healing repairs at minimal cost.
| Feature | Free-form Prompting | pxml |
|---|---|---|
| Input format | Natural language paragraphs | Declarative XML with typed inputs/outputs/constraints |
| Validation | None (discover at runtime) | Schema validation before any LLM call |
| Execution order | AI guesses dependencies | Topological sort from <depends_on> |
| Tests | Write separately (or skip) | <test> blocks auto-compiled to Vitest |
| Bug fixing | Re-prompt entire file | Surgical SEARCH/REPLACE patch |
| Regression prevention | None | bugs_history.xml attached to every fix prompt |
| Token cost | Unpredictable | Measured per-node, printed in dollars |
| Delivery guarantee | Best-effort | Test suite must pass before fix accepted |
| Git audit | Chat transcripts | Every spec is a file in git |
npm install -g @two-tech-dev/pxml
pxml init
export ANTHROPIC_API_KEY="your-api-key"
pxml compile# Anthropic (default)
pxml compile --provider anthropic --model claude-3-5-sonnet
# OpenAI
pxml compile --provider openai --model gpt-4o
# Ollama (local)
pxml compile --provider ollama --model llama3.2:latest --baseUrl http://localhost:11434pxml compile --dry-run # show plan without AI calls
pxml compile --no-autogen-tests # skip AI test generation
pxml compile --verify # AI self-verification (2× tokens)
pxml compile --no-validate # skip per-file linter validation
pxml compile --no-build-check # skip post-codegen build verification| Command | Description |
|---|---|
pxml init | Initialize project with sample flows and packages |
pxml compile [file] | Generate code from XML specs |
pxml test [--node id] | Run compiled test suite |
pxml fix --flow name | Self-heal failing tests (up to 3 retries) |
pxml validate | Schema + cross-reference validation |
pxml doctor | Check environment and API keys |
pxml install / pxml i | Install packages from pxml.json |
pxml plugin url-git <url> | Install single package from git |
pxml migrate | Update to latest pxml syntax |
pxml diagnose --log <path> | Analyze compile log for failure patterns |
my-project/
├── project.xml # main config: name, stack, imports, autogen-tests
├── flows/ # node definitions grouped by feature
│ ├── auth.xml
│ ├── cart.xml
│ └── catalog.xml
├── packages/ # installed git packages
├── pxml.json # manifest: version + installed packages
├── bugs_history.xml # institutional memory for regression prevention
└── .pxml/
├── manifest.json # test results, compile state
└── layout.json # graph editor layout (pxml Studio)
<projectname="my-app"stack="nextjs"version="0.1.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:noNamespaceSchemaLocation="pxml.xsd">
<importsrc="flows/blog.xml"as="blog" />
</project>
<!-- flows/blog.xml -->
<flowname="blog.write">
<nodeid="api.posts.create"type="api-route">
<meta>
<path>app/api/posts/route.ts</path>
<depends_on>db.setup</depends_on>
</meta>
<input>
<fieldname="title"type="string"required="true" />
<fieldname="content"type="string"required="true" />
</input>
<constraintverify="static">
POST returns 201 with created post; title max 200 chars
</constraint>
<test>
<given>
<bodyjson="true">
<title>Hello</title>
<content>My post</content>
</body>
</given>
<expect><status>201</status></expect>
</test>
</node>
</flow>Launch the visual graph editor with a single command:
pxml studio # starts on http://localhost:3001
pxml studio --port 8080 # custom portA ReactFlow-based graph editor for visual pxml project management. Features:
- Graph canvas: 6 node types (api-route, ui-component, db-model, middleware, config-file, setup-command)
- Node creation: toolbar button (Ctrl+N) or right-click canvas → choose node type
- Drag-to-connect: multi-handle edges (3 source + 3 target per node)
- Draw.io-style edges: draggable waypoints, midpoint bend-points, delete button on hover
- Property panel: 5 tabs (basic, fields, constraints, tests, meta)
- Settings dialog: VSCode-style (Ctrl+,) — General, Appearance, Editor, Output, AI Provider, Graph
- Compile: WebSocket streaming with real-time node status animation
- Test/Fix/Diagnose: run tests, self-heal, analyze failures
- Plugin manager: install packages from git URLs
- Undo/Redo: full history stack (Ctrl+Z / Ctrl+Shift+Z)
- Layout persistence: saved to
.pxml/layout.json - Resizable panels: left sidebar, right properties, bottom output
- XML import/export: bidirectional XML ↔ graph serialization
- Monochromatic dark theme: Cursor/Grok-inspired neutral grays
pxml supports nextjs, python, rust, go — the code generator adjusts prompt guidelines and style directives based on <project stack="...">.
Document known bugs in bugs_history.xml. The compiler attaches them to every fix prompt to prevent recurrence:
<bugsxmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:noNamespaceSchemaLocation="bugs.xsd">
<bugid="cart.badge"flow="cart.view">
Cart badge count displays 0 despite items in cart.
Always fetch from backend DB route, not localStorage.
</bug>
</bugs>After every compile or fix, the CLI prints a cost summary with input/output/cached tokens and estimated dollar cost.
pxml validate auto-generates an enriched pxml.xsd with exact autocomplete for flows, node types, and extends targets from imported packages — no LSP configuration needed.
MIT