feat: add routed online search providers

extensions/exa.ts

@@ -0,0 +1,32 @@
+import type { ExtensionAPI } from "@earendil-works/pi-coding-agent";
+import { createMcpAdapter } from "pi-mcp-adapter";
+import { createExaToolApiOverride } from "./exa-tool-prefix.ts";
+
+const EXA_TOOLS = ["web_search_exa", "web_fetch_exa", "web_search_advanced_exa"];
+const EXA_MCP_URL = `https://mcp.exa.ai/mcp?tools=${EXA_TOOLS.join(",")}`;
+
+const exaAdapter = createMcpAdapter({
+	config: {
+		settings: {
+			disableProxyTool: true,
+			scriptMode: false,
+		},
+		mcpServers: {
+			exa: {
+				url: EXA_MCP_URL,
+				protocolVersion: "auto",
+				lifecycle: "eager",
+				directTools: EXA_TOOLS,
+				includeTools: EXA_TOOLS,
+				toolPrefix: "none",
+				approveTools: false,
+				exposeResources: false,
+			},
+		},
+	},
+});
+
+/** Connect Pi to Exa while exposing every direct tool as `exa_<original-name>`. */
+export default function exaExtension(pi: ExtensionAPI): void {
+	exaAdapter(createExaToolApiOverride(pi));
+}