# simonw/til

Today I Learned

Repository: https://github.com/simonw/til
Canonical: https://ross.abutalabs.com/products/simonw-til
Homepage: https://til.simonwillison.net
Language: HTML
License: Apache-2.0
License Family: permissive
Topics: datasette, til
Last push: 2026-07-29T04:43:20+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 95, release rhythm 35, longevity 100
- inputs: {"age_days": 2327, "days_push": 35, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1451, forks 119 (observed 2026-08-28T04:04:45.991062+00:00)

## What it is
A collection of 580+ short 'Today I Learned' technical notes by Simon Willison, published as Markdown files in a GitHub repository and searchable at til.simonwillison.net via Datasette. Topics span Python, SQLite, LLMs, GitHub Actions, macOS, and many other developer tools.

## Use cases
- find a quick snippet for configuring GitHub Actions
- look up how to do something in SQLite or Datasette
- search notes about LLM tooling and MCP setup
- browse tips on Python packaging and uv
- subscribe to an Atom feed of new developer tips
- set up a similar TIL site with Datasette

## When to choose
- you want concise, practical notes on Python, SQLite, LLMs, or CI tooling
- you need a searchable reference of small developer how-tos
- you want inspiration for publishing your own TIL collection

## When to avoid
- you need comprehensive tutorials or structured courses
- you need production-grade software rather than notes
- you need documentation for a specific tool's full API

## Facets
- artifact type: learning-resource
- maturity: active
- function: documentation, markdown, search-engine
- domain: developer-tools, tutorials, documentation, awesome-lists
- platform: python, cli
- tags: til, knowledge-base, notes, datasette, simon-willison, atom-feed, web-server

## Member repositories
- simonw/til (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:45.991062+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 2026-08-30T04:35:52.879980+00:00, confidence not recorded.
  - readme: https://github.com/simonw/til (fetched 2026-08-28T04:04:45.991062+00:00, sha bfa26d65cdf8)
  - homepage: https://til.simonwillison.net (fetched 2026-08-29T11:45:21.678226+00:00, sha 70ba6d743bce)
  - site_page: https://til.simonwillison.net/readthedocs (fetched 2026-08-29T11:45:21.682394+00:00, sha ffc0e770821d)
  - site_page: https://til.simonwillison.net/jupyter/jupyterlab-uv-tool-install (fetched 2026-08-29T11:45:21.685704+00:00, sha d5940cedcfa9)
  - site_page: https://simonwillison.net/2025/Feb/7/sqlite-s3vfs (fetched 2026-08-29T11:45:21.684140+00:00, sha 992a7d9ffe26)
- Data as of 2026-08-30T08:39:29.467469+00:00.