Function mcp__request__argument__key 

pub fn mcp__request__argument__key(value: &str) -> String

Instantiates the <key> placeholder in the attribute MCP__REQUEST__ARGUMENT__KEY (mcp.request.argument.<key>) with a concrete value.

Example

use relay_conventions::interpolate::mcp__request__argument__key;
assert_eq!(mcp__request__argument__key("foobar"), "mcp.request.argument.foobar");