llms.txt HTTP Status Checker

Test the HTTP response returned by a website’s /llms.txt endpoint and identify successful, redirected, missing, blocked or server-error responses.

llms.txt HTTP Status Checker

Inspect the response code and delivery details

Free

Check the llms.txt response

Enter a domain and we’ll request its /llms.txt endpoint.

Enter a website to inspect its llms.txt HTTP response.

What Is the llms.txt HTTP Status Checker?

This checker requests a website’s root /llms.txt endpoint and reports the HTTP response code. It helps distinguish a successful file response from a missing file, access restriction, redirect or server failure.

Understanding Common Status Codes

200 means the server returned a successful response, 404 means the file was not found, 401/403 indicates restricted access and 5xx codes indicate a server-side failure. A successful code is also checked for HTML fallbacks and empty responses.

Why the Final URL Matters

Redirects can move a request away from the intended resource. The final URL and content type help determine whether the response is still a real llms.txt file or an unrelated homepage.

Free WordPress plugin

Publish your llms.txt automatically

Generate and maintain a clean /llms.txt endpoint from your WordPress posts, pages, categories and public custom post types.

Download free plugin View plugin features

Related Components

llms.txt Generator & Builder Create an llms.txt file manually, from a sitemap or from a list of URLs. llms.txt Validator Check syntax, Markdown and structure. llms.txt Formatter Clean, beautify and reorder sections. llms.txt Converter Convert between CSV, JSON and HTML. llms.txt Link Checker Find broken and duplicate URLs. llms.txt Analyzer & Previewer Preview, URLs, sections and word count.

Questions you might have

What HTTP status should llms.txt return?
A public llms.txt file should normally return HTTP 200 with a text-based content type.
Why does my missing file return 200?
Some sites return the homepage for every unknown path. The checker flags HTML responses so they are not mistaken for a valid text file.
Are redirects always a problem?
No. A redirect is acceptable when the final URL still serves the intended llms.txt resource.
What does HTTP 403 mean?
The server understood the request but refused access, often because of permissions, firewall rules or bot protection.
Does this tool validate Markdown?
No. Use the llms.txt Validator after confirming the endpoint responds successfully.
llms.txt Availability Checker Check whether a website publishes a public llms.txt file. llms.txt File Size Checker Measure the exact byte size, characters and lines.