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llms.txt Validator

Checks a site's llms.txt file against the official spec, requests every linked URL, and scores the result from 0 to 100.

Actively maintained

At a glanceswept Oct 14, 2026

≈ 1visits/mo

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

  • llms.txt Validator1
  • #1 PolyAI392k
For
Website owners and developers who want to check their llms.txt file against the spec before publishing it.
Activity
Actively maintainedsite updated 10 days ago
Used for
  • validate a domain's llms.txt against the official spec
  • check that every linked URL in llms.txt is reachable
  • review a draft llms.txt by pasting its text
Worth knowingcomputed from what we read · each with its source
How a program reaches itfound, not claimed · read Oct 21, 2026
  • MCP serverdev.llms-txt-validator/llms-txt-validatorverified in the MCP registry
  • Stateanswers, 3 toolschecked 2026-10-21
  • Address to connectllms-txt-validator.dev/mcp
  • API docsllms-txt-validator.dev/apithe vendor's page ↗

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 Agentsby use, among tools still maintained

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

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Questions this page answers
  • What is llms.txt Validator?

    Checks a site's llms.txt file against the official spec, requests every linked URL, and scores the result from 0 to 100. It is listed in the Atlas under Agents.

  • Who is llms.txt Validator for?

    Website owners and developers who want to check their llms.txt file against the spec before publishing it.

  • Is llms.txt Validator still maintained?

    Actively maintained: site updated 10 days ago.

  • What are alternatives to llms.txt Validator?

    In Agents, by use: Future AGI, Fully Managed OpenClaw Hosting, Alice by TranX, CrawlerOptic, Noveum AI, Free Token Counter.

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