Reading the project's .mcp.json now goes through a safe reader that rejects the file if it isn't a regular file or if it exceeds a byte-size cap, throwing a clear error instead of attempting to parse arbitrary content.
Names in the bundle.mcp.json
The entry above is what we published on the day. These lines were added later, as Anthropic's own pages caught up, and they sit beside the original rather than replacing it.
Added since
A small documentation edit on Connect to MCP servers touched a line naming .mcp.json after this was published.
* **Cloud sessions**: commit a `.mcp.json` to your repository. See [Edit .mcp.json directly](#edit-mcp-json-directly).mcp-quickstart see the edit
Confirmed since
Anthropic's documentation has since written up .mcp.json, on MCP, plugins, skills, and hooks.
| `.mcp.json` | MCP servers bundled with this plugin. A JSON object keyed by server name: `{"mcpServers": {"<name>": {"type": "http", "url": "...", "oauth": true}}}`. A remote entry uses `type` (`http` or `sse`), not `transport`, and suppo…third-party/claude-desktop/extensions see the edit
Two sources agreeTwo things we can check say the same as this entry.
Anthropic's documentation agrees
Anthropic's documentation has since written up .mcp.json, on MCP, plugins, skills, and hooks.
Anthropic's release notes agree
Fixed claude mcp add/remove hanging or exhausting memory when the project's .mcp.json is a FIFO or a device-file symlink; it now fails fast…