wadllib
Navigate HTTP resources using WADL files as guides.
Decision gist · record as of 2026-08-14
Yes, if you are working with a WADL-described web service. The package is stable, actively maintained, has low install friction, and carries no known vulnerabilities. However, WADL adoption is limited in modern APIs; verify that your target service actually uses WADL before adding it as a dependency. The copyleft license (LGPL v3) requires derivative works to be similarly licensed.AI-flagged interpretation of the facts on this page — verify before relying
Before you install
- Requires Python 3.8 or later.
- Low friction install with only two runtime dependencies (importlib-resources and lazr.uri).
- Actively maintained as of 44 days ago with stable status.
License · maintenance · safety
LGPL v3 (copyleft) — Licensed under LGPL v3 (copyleft). You may use and modify wadllib freely, but any derivative work must also be distributed under LGPL v3 or compatible terms.
last release 2026-07-01 (44 days)
0 known vulnerabilities (OSV.dev, 2026-08-14) · 316,275 downloads/mo, #7,678 on PyPI
Alternatives
Verify before relying
pip install wadllib
from wadllib.application import Application
wadl_bytes = open('service.wadl', 'rb').read()
app = Application('http://api.example.com/', wadl_bytes)
resource = app.get_resource_by_path('')- Whether WADL is still actively used in modern REST API ecosystems or primarily for legacy systems.
- Real-world performance characteristics when parsing large or deeply nested WADL documents.
What it is and what it does
wadllib is a Python library for working with WADL files—XML documents that formally describe HTTP web services. It parses WADL markup and builds an object model representing the service's resources, methods, parameters, and representations, letting you navigate and query the service structure programmatically.
The library is designed for clients that need to discover and interact with HTTP APIs whose structure is defined in WADL. You load a WADL file by URL or file handle, then navigate from a root resource through linked resources, retrieve method definitions, build request URLs with parameters, and bind actual HTTP response data to WADL resource descriptions to extract typed values. It depends on importlib-resources for resource loading and lazr.uri for URL handling.
Use it for
- Build a dynamic HTTP client that discovers API endpoints and methods from a WADL file at runtime.
- Extract and validate parameter definitions for HTTP requests before making them to a WADL-described service.
- Navigate a complex REST API by following WADL-defined links between resources without hardcoding URLs.
- Parse WADL metadata to generate documentation or code stubs for a web service.
- Bind JSON or XML response data to WADL resource descriptions to access typed fields and linked resources.
Worth the install?
AI-flagged interpretation of the facts on this page. Verify before relying on it.
Yes, if you are working with a WADL-described web service.
The package is stable, actively maintained, has low install friction, and carries no known vulnerabilities. However, WADL adoption is limited in modern APIs; verify that your target service actually uses WADL before adding it as a dependency. The copyleft license (LGPL v3) requires derivative works to be similarly licensed.
Install
wadllib on PyPI
Before you install
Low friction install with only two runtime dependencies (importlib-resources and lazr.uri). Actively maintained as of 44 days ago with stable status.
Requires Python 3.8 or later.
License in practice
Licensed under LGPL v3 (copyleft). You may use and modify wadllib freely, but any derivative work must also be distributed under LGPL v3 or compatible terms.
Quickstart
pip install wadllib
from wadllib.application import Application
wadl_bytes = open('service.wadl', 'rb').read()
app = Application('http://api.example.com/', wadl_bytes)
resource = app.get_resource_by_path('')Verify before relying
- Whether WADL is still actively used in modern REST API ecosystems or primarily for legacy systems.
- Real-world performance characteristics when parsing large or deeply nested WADL documents.
Package facts
| License | LGPL v3 copyleft |
| Python support | Supports the current Python release >=3.8 |
| Install friction | Low. Pure-Python wheel |
| Runtime dependencies | 2 packagesimportlib-resourceslazr.uri |
| Maintenance | Actively maintained 44 days since the last release |
| First released | |
| Downloads | 316,275 / month, #7,678 on PyPI 30-day window, as of 2026-08-14 |
| Known vulnerabilities | None known OSV.dev, checked 2026-08-14 |
| Classifiers | Development Status :: 5 - Production/StableIntended Audience :: DevelopersLicense :: OSI Approved :: GNU Library or Lesser General Public License (LGPL)Operating System :: OS IndependentProgramming Language :: PythonProgramming Language :: Python :: 3Programming Language :: Python :: 3.10Programming Language :: Python :: 3.11Programming Language :: Python :: 3.12Programming Language :: Python :: 3.13Programming Language :: Python :: 3.14Programming Language :: Python :: 3.8Programming Language :: Python :: 3.9 |
Evidence: wadllib-2.1.0-py3-none-any.whl
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