hedron-core
Framework-neutral typed rendering core for Hedron.
Defines models, security boundary types, components, the HTML serializer,
Auto() intelligent rendering, cache protocols, ColorMode, utility built-ins,
and the public render(...) -> RenderResult and request-scoped RenderSession
APIs — with no FastAPI, Flask, Django, ASGI, or WSGI dependency.
Host adapters share this renderer:
- FastAPI —
hedron - Flask —
hedron-flask - Django —
hedron-django
Package maturity: Beta · Train: 0.25.x (last published 0.25.1; workspace 0.25.2 candidate) · pin >=0.25.0,<0.26
Install
pip install "hedron-core>=0.25.0,<0.26"
# or
uv add "hedron-core>=0.25.0,<0.26"
Requires Python 3.11–3.14.
Quick start
from hedron_core import Page, RenderContext, RenderMode, Text, render
result = render(
Page(Text("Hello, Hedron"), title="Demo"),
context=RenderContext.standalone(locale="en"),
mode=RenderMode.PAGE,
)
print(result.html)
What this package includes
Model,Props,FormModel,EventPayload, andField- Trust boundary types:
Secret,TrustedHtml,SafeUrl,UrlPurpose - Component protocol, registry, diagnostics (JSON/SARIF), and deterministic identity
- Context-aware HTML serializer,
render(...) -> RenderResult, andRenderSession - Scoped CSS, themes, assets, and component discovery helpers
- Built-ins for pages, forms, layout, landmarks, and content
- Framework-neutral plugin metadata and Explorer panel registration helpers
- Portable adapter contracts (
AuthSignal, capability matrix, URL reverse request)
What it does not include
- HTTP routing or FastAPI / Flask / Django adapters
- HTMX request handling and CSRF middleware (host packages)
- CLI, Component Explorer UI, charts, or data grids
Prefer hedron for application work on FastAPI.
Links
License
MIT. See LICENSE.
1 maintainer
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