readOnlyHint
boolean
How to use it
readOnlyHint is exposed by the Fastmcp MCP server. Add the server to your MCP client (Claude Desktop, Cursor, Windsurf and others), and the readOnlyHint tool becomes available to the model automatically. See the full listing for setup details and every tool this server provides.
Install Fastmcp
$
npx fastmcp dev src/examples/addition.ts