What it does
Core capabilities at a glance
- Accessibility
- Agent Readiness
- Astro
- Cloudflare Pages
- Llms TXT
- MCP
- SEO
- Specification
Deep dive
The full breakdown - performance, comparisons, and setup
specification.websiteLink to this section
specification.website is an agent framework - Website specification — HTML, accessibility, security, SEO, agent-readiness. Platform-agnostic, sourced, MIT.
OverviewLink to this section
The website specification — from ' ' to '/.well-known/security.txt', from WCAG contrast to 'llms.txt'. Platform-agnostic, sourced on every page, written for humans and agents. MIT licensed, open for pull requests.
The web is a layer cake of standards: WHATWG defines HTML, W3C ratifies WCAG, the IETF publishes the RFCs behind security headers and '/.well-known/' URIs, IANA registers the namespaces, search engines publish their own rules, browsers add quirks. Almost nobody carries the whole picture.
This site collects the slices into one platform-agnostic specification — sources cited on every page.
It is not a framework. It is not a tutorial. It is a spec, in the same way the HTML Living Standard is a spec: outcomes, requirements, references.
- Not platform-specific. No "use this Next.js plugin" advice — the spec describes the outcome, you choose the implementation. - Not opinion. Where there is no settled standard, the spec says so. - Not a marketing site. No newsletter capture. No cookies. Aggregate Plausible analytics; that's it.
specification.website is open-source, written primarily in TypeScript, with 923 GitHub stars under the Other license. It was last updated on 2026-11-04.
Key capabilitiesLink to this section
From the project's documentation:
- Not opinion. Where there is no settled standard, the spec says so.
- Not a marketing site. No newsletter capture. No cookies. Aggregate Plausible analytics; that's it.
- Foundations — HTML, head, document basics.
- SEO — search visibility.
- Accessibility — WCAG-aligned rules.
- Security — headers, transport, policies.
How it fits a local-AI stackLink to this section
specification.website runs on your own hardware, so pair it with a model and a GPU sized to your needs. Use the VRAM calculator to pick a model that fits your card, and see what you can run for hardware guidance. Related agent frameworks in the directory:
SourcesLink to this section
- Source code & docs: jdevalk/specification.website
- Official website: https://specification.website
Stats from GitHub, 2026-11-05.
Frequently asked
Quick answers to common questions
What is specification.website?
specification.website is a agent-framework tool for local AI workloads. Website specification — HTML, accessibility, security, SEO, agent-readiness. Platform-agnostic, sourced, MIT.
Is specification.website free and open source?
Yes, specification.website has 923 GitHub stars and is licensed under Other. You can self-host it for free on web.
What platforms does specification.website support?
specification.website runs on web.
What hardware do I need for specification.website?
The hardware requirements depend on which models you run. Check our hardware directory for compatible GPUs and systems. specification.website has 923 GitHub stars and an active community.
Does specification.website support GPU acceleration?
specification.website's GPU support depends on your specific setup. Check the documentation for details. For the best performance, pair it with an NVIDIA RTX 4090 or 5090.
What are the best alternatives to specification.website?
Popular alternatives include other agent-framework tools in our directory. Browse our full collection at /tool for comparisons, community reviews, and benchmark data to find the right fit for your workflow.
How much does specification.website cost?
specification.website is free-open-source. It is completely free and open source to self-host.
Pairs well with
Complementary tools, models, and hardware