---
id: asdf-transform-schemas
version: "0.6.0"
license: unclear
license_treatment: unclear
maintenance: active
---

# asdf-transform-schemas — ASDF schemas for transforms

License: unclear · Maintenance: active · Downloads: 263.9K/mo

## What it is and what it does

asdf-transform-schemas is a schema package that defines validation rules for transform tags within the ASDF (Advanced Scientific Data Format) file format. It does not provide user-facing APIs but instead serves as a dependency for ASDF implementation packages like asdf-astropy, which bundle it to enable proper validation of transform metadata in scientific data files.

The package is maintained as part of the ASDF ecosystem and is actively developed. It requires Python 3.9 or later and depends on asdf-standard. Most users should not install it directly; instead, they install implementation packages that include it as a transitive dependency. The package has low install friction and no known security vulnerabilities.

Use it for:

- Validating ASDF files that contain transform tags when using asdf-astropy or other ASDF implementation packages.
- Ensuring transform metadata in scientific data files conforms to the ASDF standard schema.
- Supporting coordinate transformation workflows in astronomy and scientific computing via ASDF format compliance.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides ASDF schemas for validating transform tags used in the ASDF file format.

Yes, but typically as a transitive dependency. Install directly only if you are building ASDF-based tools or need explicit control over schema validation for transform tags. For most users, install an implementation package like asdf-astropy instead, which will pull this in automatically.

## Install

pip install asdf-transform-schemas
uv add asdf-transform-schemas
poetry add asdf-transform-schemas

## Installing asdf-transform-schemas

Before you install: Active maintenance with a recent commit (2026-07-20) and low install friction. This is a schema package typically pulled in as a transitive dependency rather than installed directly.

Quickstart:

# Typically installed as a dependency of asdf-astropy or similar
# Direct installation:
pip install asdf-transform-schemas

# Used indirectly via asdf-standard and related packages
import asdf

Requires Python 3.9 or later; typically installed as a transitive dependency rather than directly.

Verify before relying:

- Whether this package is intended for end-user installation or only as a transitive dependency of implementation packages like asdf-astropy.

## Package facts

- License: not declared (unclear)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 263.9K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

asdf transform schemas, asdf schema validation, transform tag validation, asdf format schemas, scientific data transform schemas, asdf coordinate transforms, schema-validation, asdf-ecosystem

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