---
title: "llms.txt: what it is and what we check · Specoria"
description: "A Markdown file at /llms.txt that summarizes a site for language models and links to its key pages. Who runs it, where it stands and what our free test checks."
source_url: "https://specoria.com/agent-protocols/llms-txt/"
lang: "en"
---

AGENT PROTOCOL MAP Facts checked against their sources on October 8, 2026

# llms.txt

A Markdown file at /llms.txt that summarizes a site for language models and links to its key pages.

llms.txt

## At a glance

### Who runs it
A proposal by Jeremy Howard (Answer.AI), first published in September 2024. Not a formal standard.

### Where it stands
Version 2 of the proposal (last updated August 2026). Google says its Search ignores llms.txt files: creating one will neither help nor harm.

Source: [llmstxt.org ↗](https://llmstxt.org/) · August 10, 2026

Source: [Google Search Central ↗](https://developers.google.com/search/docs/fundamentals/ai-optimization-guide) · July 10, 2026

### In Türkiye
A site-level file with no country restrictions.

Source: [llmstxt.org ↗](https://llmstxt.org/) · August 10, 2026

Checked

## What our free test checks

Our free test: Checked

Checks whether /llms.txt exists and how it is built: one H1 title, a “>” summary, “##” sections and annotated links; up to three of its links are tried. Neither line affects the score.

Requests (GET only)

- `/llms.txt`

Shown in the result as

- llms.txt
- llms.txt structure

Our rules

## How the test treats protocols

- None of these affects the score. Adoption is still very low, so a missing file is information, not a fault.
- Only GET requests to the store’s own domain, small and short. We never call an endpoint, open a session, send a POST or place an order.
- A file counts only if it is a valid JSON object of the expected shape; a soft 404 page doesn’t count.
- Every request is listed on our crawler page, and you can ask to have your site excluded.

[Every request our crawler makes →](https://specoria.com/bot/)

Agent protocol map

## Keep reading

### Related reading

[How to prepare your product catalog for shopping agents →](https://specoria.com/insights/preparing-your-catalog-for-shopping-agents/)

### Other protocols

[UCP](https://specoria.com/agent-protocols/ucp/) · [ACP](https://specoria.com/agent-protocols/acp/) · [MCP](https://specoria.com/agent-protocols/mcp/) · [WebMCP](https://specoria.com/agent-protocols/webmcp/) · [A2A](https://specoria.com/agent-protocols/a2a/) · [Web Bot Auth](https://specoria.com/agent-protocols/web-bot-auth/)

[All eight protocols on one page →](https://specoria.com/agent-protocols/)

## Does your store publish llms.txt?

The free test reads the files and signals on this page from your store, with GET requests only.

[Run the free test on your store →](https://specoria.com/#contact)[How the free test works →](https://specoria.com/method/)