webspec-indexlisted

# webspec-index Query WHATWG, W3C, and TC39 web specifications from the command line. Use `webspec-index` whenever you need to understand what a web spec says — algorithm steps, section content, cross-references, or whether a spec anchor exists. Specs are fetched and cached locally on first use. ## Available specs Assume that all specs from WHATWG, W3C and TC39 are indexed. If in doubt, run `webspec-index specs` to list all spec names and their base URLs. ## Installation If `webspec-index` is not already available in your environment, you can install it via cargo: ```bash cargo binstall webspec-index # or cargo install webspec-index ``` ## Commands Always put the section identifier in quotes to avoid shell interpretation of `#`. See `webspec-index --help` for full command list and options. ### Look up a spec section ```bash webspec-index query 'HTML#navigate' webspec-index query 'DOM#concept-tree' webspec-index query 'CSS-GRID#grid-container' webspec-index query 'https://html.spec.whatwg.org/#navigate' webspec-index query 'https://w3c.github.io/webappsec-permissions-policy/#permissions-policy-header' ``` Returns the section's title, type (heading/algorithm/definition), full content as markdown, navigation tree (parent/prev/next/children), and cross-references. This is the primary command — use it to read what a spec section says. Use `--format markdown` for human-readable output, or default `--format json` for structured data. For non-hardcoded specs, URL querie