Nomad changes

docs/snippets/r/mcp/mcp_custom_client.md

@@ -0,0 +1,25 @@
+```r title="R"
+# The kreuzberg R bindings ship no MCP client. Drive the kreuzberg CLI's
+# stdio MCP transport from R using a piped subprocess.
+mcp <- pipe("kreuzberg mcp", open = "w+")
+on.exit(close(mcp), add = TRUE)
+
+request <- list(
+  method = "tools/call",
+  params = list(
+    name = "extract_file",
+    arguments = list(
+      path = "document.pdf",
+      async = TRUE
+    )
+  )
+)
+
+writeLines(jsonlite::toJSON(request, auto_unbox = TRUE), con = mcp)
+flush(mcp)
+
+response_line <- readLines(mcp, n = 1L)
+cat(response_line, "\n")
+```
+
+<!-- snippet:syntax-only --> The R bindings have no MCP client; this snippet drives the MCP CLI over stdio. Requires the `jsonlite` package.