[Bug]: Error checking website

[edujsantos]

MCP Client

Other (specify in description)

Context7 MCP Version

not applicable

Bug Description

I tried using https://context7.com/add-library?tab=website to add official documentation for NTSL language for Nelogica's Profit trading platform.
It is hosted at https://ajuda.nelogica.com.br/hc/pt-br/articles/360046443212-Documenta%C3%A7%C3%A3o-NTSL-Compilado-de-fun%C3%A7%C3%B5es-e-instru%C3%A7%C3%B5es-de-usabilidade with a main link to https://www.nelogica.com.br/manualntsl that redirects to (https://downloadserver-cdn.nelogica.com.br/content/profit/manual_ntsl/ManualNTSL.pdf). I tried different combinations of the 3 links but it always lead to "Error checking website If you think this is a mistake, please open an issue."

Steps to Reproduce

1. Visit https://context7.com/add-library?tab=website
2. Fill in the URL/advanced fields with any combination of https://www.nelogica.com.br/manualntsl , https://downloadserver-cdn.nelogica.com.br/content/profit/manual_ntsl/ManualNTSL.pdf , or https://ajuda.nelogica.com.br/hc/pt-br/articles/360046443212-Documenta%C3%A7%C3%A3o-NTSL-Compilado-de-fun%C3%A7%C3%B5es-e-instru%C3%A7%C3%B5es-de-usabilidade

Expected Behavior

Accepts documentation

Actual Behavior

Error

Error Messages / Logs

Transport Method

stdio (default)

Node.js Version

No response

Operating System

No response

Configuration

Additional Context

No response

[fahreddinozcan]

Thanks for the detailed report. We investigated this and confirmed the problem.
The manualntsl URL redirects directly to a PDF. Our website importer currently expects HTML documentation and does not support direct or redirected PDF URLs, so it incorrectly returns the generic “Error checking website” message.
As a workaround, please download ManualNTSL.pdf and add it using the PDF Upload tab on the Add Library page.
We’ll track improving the error message and handling PDF redirects more gracefully. Thanks again for reporting this!