anc.dev the agent-native standard
Install ▸

Fix: initialize advertises capabilities (tools / resources / prompts)

Web-audit fix skill for the mcp-capabilities check (MCP & API, SHOULD).

Goal

Advertise the capability groups your MCP server implements in the initialize result.

Fix

Populate the capabilities object in your initialize result. Clients gate feature use on it: an empty or missing capabilities tells a client nothing is available, so it will not call tools/list, resources/list, or prompts/list. Advertise the groups your server actually implements (for example { "tools": {} }).

Resources

Copy-paste prompt

Paste this into your coding agent, replacing the Issue line with the Result line from your audit:

Verify

Re-run the audit at https://anc.dev/web-audit or call the audit_website MCP tool; the mcp-capabilities check should report pass.