Unclear It is not known which servers get the plain message in place of the detailed error.
What
When reading a resource from an MCP server fails, Claude Code used to return the full underlying error text. MCP servers are outside programs that give Claude Code extra tools. For some servers, it now returns only the general message "mcp_read_resource: could not read the resource".
Why
You and Claude may see less detail about why a resource could not be read.
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubt
It is not known which servers get the plain message in place of the detailed error.