hypha-debugger 0.1.7

Injectable debugger for Python processes and AI agents, powered by Hypha RPC

Hypha Debugger

A lightweight, injectable debugger for web pages and Python processes, powered by Hypha RPC. Designed for AI agent workflows — inject a debugger, get a URL, call it remotely.

No browser extension required. Just import and start.

┌─────────────────────────┐         ┌──────────────┐         ┌─────────────────────────┐
│  Target (Browser/Python) │ ──WS──▶ │ Hypha Server │ ◀──WS── │  Remote Client           │
│                          │         │              │         │  (curl / Python / Agent)  │
│  - Registers debug svc   │         │  Routes RPC  │         │  - Calls debug functions  │
│  - Executes remote code  │         │  messages    │         │  - Takes screenshots      │
│  - Returns results       │         │              │         │  - Queries DOM/state      │
└─────────────────────────┘         └──────────────┘         └─────────────────────────┘

JavaScript (Browser)

Inject into any web page to enable remote DOM inspection, screenshots, JavaScript execution, and React component tree inspection.

Quick Start

Via CDN (easiest):

<script src="https://cdn.jsdelivr.net/npm/hypha-rpc@0.20.97/dist/hypha-rpc-websocket.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/hypha-debugger/dist/hypha-debugger.min.js"></script>
<script>
  hyphaDebugger.startDebugger({ server_url: 'https://hypha.aicell.io' });
</script>

Via npm:

npm install hypha-debugger hypha-rpc

import { startDebugger } from 'hypha-debugger';

const session = await startDebugger({
  server_url: 'https://hypha.aicell.io',
});

console.log(session.service_url); // HTTP endpoint for remote calls
console.log(session.token);       // JWT token for authentication

What You Get

After starting, the debugger prints:

[hypha-debugger] Connected to https://hypha.aicell.io
[hypha-debugger] Service URL: https://hypha.aicell.io/ws-xxx/services/clientId:web-debugger
[hypha-debugger] Token: eyJ...
[hypha-debugger] Test it:
  curl 'https://hypha.aicell.io/ws-xxx/services/clientId:web-debugger/get_page_info' -H 'Authorization: Bearer eyJ...'

A floating debug overlay (🐛) appears on the page with connection status, service URL (with copy button), and a live log of remote operations.

Service Functions (JavaScript)

All functions are callable via the HTTP URL or Hypha RPC:

Function	Description
get_page_info()	URL, title, viewport size, detected frameworks, performance timing
get_console_logs(level?, limit?)	Captured console output (log/warn/error/info)
query_dom(selector, limit?)	Query elements by CSS selector — returns tag, text, attributes, bounds
click_element(selector)	Click an element
fill_input(selector, value)	Set value of input/textarea/select (works with React)
scroll_to(target)	Scroll to element (CSS selector) or position ({x, y})
get_computed_styles(selector, properties?)	Get computed CSS styles
get_element_bounds(selector)	Get bounding rectangle and visibility
take_screenshot(selector?, format?, scale?)	Capture page/element as base64 PNG/JPEG
execute_script(code, timeout_ms?)	Execute arbitrary JavaScript, return result
navigate(url)	Navigate to URL
go_back() / go_forward() / reload()	Browser history navigation
get_react_tree(selector?, max_depth?)	Inspect React component tree (fiber-based) — names, props, state

Calling via curl

# Get page info
curl 'SERVICE_URL/get_page_info' -H 'Authorization: Bearer TOKEN'

# Take a screenshot
curl 'SERVICE_URL/take_screenshot' -H 'Authorization: Bearer TOKEN'

# Execute JavaScript
curl -X POST 'SERVICE_URL/execute_script' \
  -H 'Authorization: Bearer TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{"code": "document.title"}'

# Query DOM
curl -X POST 'SERVICE_URL/query_dom' \
  -H 'Authorization: Bearer TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{"selector": "button"}'

# Click a button
curl -X POST 'SERVICE_URL/click_element' \
  -H 'Authorization: Bearer TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{"selector": "#submit-btn"}'

Calling via Python

from hypha_rpc import connect_to_server

server = await connect_to_server({
    "server_url": "https://hypha.aicell.io",
    "workspace": "WORKSPACE",
    "token": "TOKEN",
})
debugger = await server.get_service("web-debugger")

info = await debugger.get_page_info()
screenshot = await debugger.take_screenshot()
result = await debugger.execute_script(code="document.title")
tree = await debugger.get_react_tree()

Configuration

await startDebugger({
  server_url: 'https://hypha.aicell.io', // Required
  workspace: 'my-workspace',              // Optional, auto-assigned
  token: 'jwt-token',                     // Optional
  service_id: 'web-debugger',             // Default: 'web-debugger'
  service_name: 'Web Debugger',           // Default: 'Web Debugger'
  show_ui: true,                          // Default: true (floating overlay)
  visibility: 'public',                   // 'public' | 'protected' | 'unlisted'
});

---

Python

Inject into any Python process to enable remote code execution, variable inspection, file browsing, and process monitoring.

Quick Start

pip install hypha-debugger

CLI (simplest — just run and get instructions):

hypha-debugger

Or with options:

hypha-debugger --server-url https://hypha.aicell.io --service-id my-debugger
hypha-debugger --no-token  # URL-secret mode, no auth needed
python -m hypha_debugger   # alternative

Async:

import asyncio
from hypha_debugger import start_debugger

async def main():
    session = await start_debugger(server_url="https://hypha.aicell.io")
    session.print_instructions()  # print instructions anytime
    await session.serve_forever()

asyncio.run(main())

Sync (scripts, notebooks):

from hypha_debugger import start_debugger_sync

session = start_debugger_sync(server_url="https://hypha.aicell.io")
session.print_instructions()  # print instructions anytime

What You Get

The debugger prints copy-paste instructions on startup:

[hypha-debugger] Connected to https://hypha.aicell.io
[hypha-debugger] Service ID: ws-xxx/clientId:py-debugger
[hypha-debugger] Service URL: https://hypha.aicell.io/ws-xxx/services/py-debugger

SERVICE_URL="https://hypha.aicell.io/ws-xxx/services/py-debugger"
TOKEN="eyJ..."

# Quick test:
curl "$SERVICE_URL/get_process_info?_mode=last" -H "Authorization: Bearer $TOKEN"

# Execute code:
curl -X POST "$SERVICE_URL/execute_code?_mode=last" -H "Authorization: Bearer $TOKEN" -H "Content-Type: application/json" -d '{"code": "import sys; sys.version"}'

Call session.print_instructions() anytime to reprint them.

Service Functions (Python)

Function	Description
get_process_info()	PID, CWD, Python version, hostname, platform, memory usage
execute_code(code, namespace?)	Execute arbitrary Python code, return stdout/stderr/result
get_variable(name, namespace?)	Inspect a variable — type, value, shape (for numpy), keys (for dicts)
list_variables(namespace?, filter?)	List variables in scope
get_stack_trace()	Stack trace of all threads
list_files(path?, pattern?)	List files in directory (sandboxed to CWD)
read_file(path, max_lines?, encoding?)	Read a file (sandboxed to CWD)
get_installed_packages(filter?)	List installed pip packages

Calling via curl

# Get process info
curl 'SERVICE_URL/get_process_info' -H 'Authorization: Bearer TOKEN'

# Execute Python code
curl -X POST 'SERVICE_URL/execute_code' \
  -H 'Authorization: Bearer TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{"code": "2 + 2"}'

# List files
curl 'SERVICE_URL/list_files' -H 'Authorization: Bearer TOKEN'

# Read a file
curl -X POST 'SERVICE_URL/read_file' \
  -H 'Authorization: Bearer TOKEN' \
  -H 'Content-Type: application/json' \
  -d '{"path": "main.py"}'

Calling via Python (remote client)

from hypha_rpc import connect_to_server

server = await connect_to_server({
    "server_url": "https://hypha.aicell.io",
    "workspace": "WORKSPACE",
    "token": "TOKEN",
})
debugger = await server.get_service("py-debugger")

info = await debugger.get_process_info()
result = await debugger.execute_code(code="import sys; sys.version")
files = await debugger.list_files()

---

How It Works

1. Your target (browser page or Python process) connects to a Hypha server via WebSocket
2. It registers an RPC service with schema-annotated functions
3. The debugger prints a Service URL and Token
4. Remote clients call service functions via HTTP REST or Hypha RPC WebSocket
5. All functions have JSON Schema annotations, making them compatible with LLM/AI agent tool calling

License

MIT