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Known Good

Searches an index of websites graded for how well AI agents can use them, via an MCP server and API.

Actively maintained

MarketingSearchFor developers
knowngood.sh ↗GitHub
Open knowngood.shAlternativesSet it up for my teamIs Known Good yours? Claim the card →
At a glanceswept Oct 14, 2026

≈ 4visits/mo

Use not read yet · estimate, read Oct 14, 2026

For
developers connecting AI agents to search and check agent-ready websites
Activity
Actively maintainedrelease 13 days ago · site updated 7 days ago
Runs as
API
Used for
  • search for websites that AI agents can use
  • check a page for WebMCP support
  • read a site's agent-readiness test report
Worth knowingcomputed from what we read · each with its source
Your datawhat they publish, each line with its page · read Oct 20, 2026

These are Known Good's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.

How a program reaches itfound, not claimed · read Oct 20, 2026

MCP server details →

This card as JSON, for your agent →

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.

Alternatives in Marketingby use, among tools still maintained

Figure and bar: visits/mo, estimate · year: online since

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Not it? Say what you need

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Three tools from the Atlas for the job you describe, each with what fits and what does not.

From people who use itnot part of the reading

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Questions this page answers
  • What is Known Good?

    Searches an index of websites graded for how well AI agents can use them, via an MCP server and API. It is listed in the Atlas under Marketing.

  • Who is Known Good for?

    developers connecting AI agents to search and check agent-ready websites

  • Is Known Good still maintained?

    Actively maintained: release 13 days ago · site updated 7 days ago.

  • What are alternatives to Known Good?

    In Marketing, by use: Framer, GrowthBar Agent, Keywords Everywhere, WordLift, LVL Up Auto, SEOmatic for Claude & ChatGPT.

How we read a tool

No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.

  • Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
  • Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
  • Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
  • The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.

How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.

How we read every tool → · By INITE Atlas Desk