# aio-libs/yarl

Yet another URL library

Repository: https://github.com/aio-libs/yarl
Canonical: https://ross.abutalabs.com/products/yarl
Homepage: https://yarl.aio-libs.org
Language: Python
License: Apache-2.0
License Family: permissive
Topics: aiohttp, url-parsing, urls, hacktoberfest
Last push: 2026-08-25T12:03:31+00:00

## Health v2 (maintenance only)
Score: 97/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 99, release rhythm 93, longevity 100
- inputs: {"age_days": 3683, "days_push": 8, "days_rel": 45, "gap_med": 2, "n_releases_24m": 36}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1494, forks 209 (observed 2026-08-28T04:04:53.036182+00:00)

## What it is
yarl is a Python library providing a URL class for parsing, constructing, and manipulating URLs with automatic encoding and immutable semantics. It is the URL library underlying aiohttp and supports both encoded and human-readable representations.

## Use cases
- parse urls in python
- build urls with query parameters
- join url path segments safely
- encode and decode url components
- normalize urls to canonical form
- extract scheme host and path from a url

## When to choose
- you need RFC-compliant URL parsing and manipulation in Python
- you use aiohttp or want immutable URL objects with automatic percent-encoding
- you need to handle non-ASCII URLs correctly

## When to avoid
- you only need simple string splitting of URLs
- you are working in a non-Python stack

## Facets
- artifact type: library
- maturity: stable
- function: parser, http-client, developer-tools
- domain: web-development, developer-tools, apis
- platform: python, cross-platform
- tags: url-parsing, url-manipulation, aiohttp, immutable-urls, percent-encoding

## Member repositories
- aio-libs/yarl (main) score 97

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:53.036182+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:33:21.230680+00:00, confidence not recorded.
  - readme: https://github.com/aio-libs/yarl (fetched 2026-08-28T04:04:53.036182+00:00, sha ef996850be97)
- Data as of 2026-08-30T08:39:29.467469+00:00.