#oauth

Debugging why Claude cannot reach a remote MCP server that works locally

Claude cannot reach your MCP server, but curl can

Claude shows one error for a lot of different problems: Couldn't reach the MCP server. Your server is up. You can curl it. MCP Inspector connects. Claude still refuses.

Sat Aug 22 2026 · 6 min read · 0 views

Software

Claude custom connector OAuth registration: choosing between DCR, CIMD and Anthropic-held credentials

Claude cannot register with your OAuth server. Now what?

Your remote MCP server works in curl. It works in MCP Inspector. Then you add it to Claude as a custom connector and get this:

Sat Aug 22 2026 · 5 min read · 0 views

Software