# hypothesis/h

Annotate with anyone, anywhere.

Repository: https://github.com/hypothesis/h
Canonical: https://ross.abutalabs.com/products/h
Homepage: https://hypothes.is/
Language: Python
License: BSD-2-Clause
License Family: permissive
Topics: annotation, python, hypothesis
Last push: 2026-08-21T14:08:20+00:00

## Health v2 (maintenance only)
Score: 67/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 8, longevity 100
- inputs: {"age_days": 5266, "days_push": 12, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3176, forks 462 (observed 2026-08-28T04:07:47.620044+00:00)

## What it is
h is the backend web application behind hypothes.is, serving the website and the web annotation API that clients use to create, share, and discuss annotations on web pages and PDFs. It is a Python (Pyramid) application with a JavaScript frontend, developed openly by Hypothesis.

## Use cases
- self-host a web annotation server
- store and serve annotations over an API
- build collaborative annotation features into an app
- run a private annotation service for a class or organization
- integrate annotation data with an LMS or other tools
- query annotations for a given web page or PDF

## When to choose
- you want to self-host the Hypothesis annotation backend or its API
- you need a standards-based web annotation store with groups, permissions, and search
- you want to contribute to or extend the Hypothesis platform

## When to avoid
- you just want to annotate pages in your browser - use the Hypothesis browser client instead
- you need a lightweight embeddable annotation widget rather than a full server
- you want a general-purpose note-taking or document-management tool

## Facets
- artifact type: application
- maturity: active
- function: web-framework, api-framework, http-server, search-engine, auth
- domain: education, web-development, apis, self-hosted
- platform: python, self-hosted
- tags: annotation, social-annotation, web-annotation-api, lms-integration, pyramid, higher-education, web-server, docker, linux, macos

## Member repositories
- hypothesis/h (main) score 67

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:47.620044+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 2026-08-29T18:45:24.826039+00:00, confidence not recorded.
  - readme: https://github.com/hypothesis/h (fetched 2026-08-28T04:07:47.620044+00:00, sha 58f980df524e)
  - homepage: https://hypothes.is/ (fetched 2026-08-29T09:39:36.565551+00:00, sha f772b0a415c6)
  - site_page: https://web.hypothes.is/about-us (fetched 2026-08-29T09:39:36.575640+00:00, sha e5a706efc19e)
  - site_page: https://web.hypothes.is/blog/annotation-as-self-discovery-what-students-learn-about-themselves-through-social-annotation (fetched 2026-08-29T09:39:36.581712+00:00, sha 26305c814a3e)
  - site_page: https://web.hypothes.is/product-update (fetched 2026-08-29T09:39:36.577829+00:00, sha 26a17d3eb206)
  - site_page: https://web.hypothes.is/pricing-page (fetched 2026-08-29T09:39:36.579741+00:00, sha 5c1e8136d33b)
  - site_page: https://web.hypothes.is/?page_id=3575 (fetched 2026-08-29T09:39:36.583642+00:00, sha f772b0a415c6)
- Data as of 2026-08-30T08:39:29.467469+00:00.