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hedron-core

PyPI Python CI License: MIT

hedron-core is the framework-neutral HTML renderer. It has no FastAPI, Flask, or Django dependency.

Building an app? Install hedron instead. Use this package if you are writing a host adapter or rendering components outside a web framework.

Published in-tree v0.48.0. Git tag and PyPI upload are deferred. In-tree pin hedron-core>=0.48.0,<0.49. The latest on PyPI is 0.47.0.

Package maturity: Beta · pin >=0.48.0,<0.49.

Install

pip install "hedron-core>=0.47.0,<0.48"
# or
uv add "hedron-core>=0.47.0,<0.48"

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, and Field
  • Trust boundary types: Secret, TrustedHtml, SafeUrl, UrlPurpose
  • Component protocol, registry, diagnostics (JSON/SARIF), and deterministic identity
  • Context-aware HTML serializer, render(...) -> RenderResult, and RenderSession
  • 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 the repository license.

Release files for hedron-core 0.48.0

For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.

Source distribution (sdist)

Source distribution for hedron-core 0.48.0
File Size Uploaded
hedron_core-0.48.0.tar.gz 288.2 kB Details

Built distribution (wheel)

Table of built distributions (wheels) for hedron-core 0.48.0
File Interpreter ABI Platform
hedron_core-0.48.0-py3-none-any.whl Python 3 none any Details

Total release size: 651.6 kB

Release files / hedron_core-0.48.0.tar.gz

Download URL hedron_core-0.48.0.tar.gz
Size 288.2 kB
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Release files / hedron_core-0.48.0-py3-none-any.whl

Download URL hedron_core-0.48.0-py3-none-any.whl
Size 363.3 kB
Tags Python 3
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Uploaded via uv/0.12.1 {"installer":{"name":"uv","version":"0.12.1","subcommand":["publish"]},"python":null,"implementation":{"name":null,"version":null},"distro":{"name":"Ubuntu","version":"24.04","id":"noble","libc":null},"system":{"name":null,"release":null},"cpu":null,"openssl_version":null,"setuptools_version":null,"rustc_version":null,"ci":true}

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