all repos — sz-chrome-remote-extension @ ae0e6d4ea16c8232957d84c226c9c874c7c5f1c1

pi-chrome, patched to drive a signed-in browser on another host through a broker, with an MCP server 

feat: lazy-register chrome tools until /chrome authorize

Defer all pi.registerTool() calls until /chrome authorize fires.

Previously, 18 chrome_* tool definitions + chrome-profile-bridge
primer consumed ~5K tokens/turn even when Chrome control locked.

Changes:
- Add chromeToolsRegistered flag (default false)
- Wrap all pi.registerTool() calls in registerChromeTools(pi)
- Only register tools when authorizeFor() runs
- Make before_agent_start conditional: primer injected only when
  tools registered AND authorized
- No tools exist in context until user explicitly allows it

Saves ~5,000 tokens/turn when Chrome control is locked.
Dani Bednarski 49581958+DaniBedz@users.noreply.github.com
Sun, 17 May 2026 00:24:02 +1000
commit

ae0e6d4ea16c8232957d84c226c9c874c7c5f1c1

parent

4739dce965041f72da917794b6d3122d01904f45

2 files changed, 36 insertions(+), 0 deletions(-)

jump to
M extensions/chrome-profile-bridge/index.ts → extensions/chrome-profile-bridge/index.ts 
@@ -463,6 +463,7 @@
 	const bridge = new ChromeProfileBridge(DEFAULT_HOST, DEFAULT_PORT);
 	let backgroundDefault = false;
 	let chromeAuthorizedUntil: number | "indefinite" | undefined;
+	let chromeToolsRegistered = false;
 
 	const authSummary = (): string => {
 		if (chromeAuthorizedUntil === "indefinite") return "authorized indefinitely";

@@ -526,6 +527,9 @@ }
 	});
 
 	pi.on("before_agent_start", (event) => {
+		if (!chromeToolsRegistered || !chromeControlAuthorized()) {
+			return { systemPrompt: event.systemPrompt };
+		}
 		const primer = `
 <chrome-profile-bridge>
 Chrome control is available through the chrome_* tools via a companion Chrome extension installed in the user's normal Chrome profile. Tools target the existing signed-in profile: no remote-debug port, no throwaway profile.

@@ -649,6 +653,7 @@ if (!ok) {
 			ctx.ui.notify("Chrome control remains locked.", "info");
 			return;
 		}
+		registerChromeTools(pi);
 		chromeAuthorizedUntil = until;
 		ctx.ui.notify(`Chrome control authorized for ${label}.`, "info");
 		updateChromeStatus(ctx);

@@ -850,6 +855,10 @@ ctx.ui.notify(`Unknown subcommand '${head}'. Try: /chrome authorize | revoke | status | doctor | onboard | background.`, "warning");
 			}
 		},
 	});
+
+	function registerChromeTools(pi: ExtensionAPI): void {
+		if (chromeToolsRegistered) return;
+		chromeToolsRegistered = true;
 
 	pi.registerTool({
 		name: "chrome_launch",

@@ -1384,4 +1393,6 @@ const result = await authorizedBridgeSend("page.upload", withBackground({ ...params, paths }), DEFAULT_TIMEOUT_MS, signal);
 			return { content: [{ type: "text", text: `Uploaded ${paths.length} file(s) to ${params.uid ?? params.selector}` }], details: { result: result as Json } };
 		},
 	});
+	}
+
 }
A package-lock.json 
@@ -0,0 +1,25 @@
+{
+	"name": "pi-chrome",
+	"version": "0.15.21",
+	"lockfileVersion": 3,
+	"requires": true,
+	"packages": {
+		"": {
+			"name": "pi-chrome",
+			"version": "0.15.21",
+			"license": "MIT",
+			"peerDependencies": {
+				"@earendil-works/pi-coding-agent": "*",
+				"typebox": "*"
+			},
+			"peerDependenciesMeta": {
+				"@earendil-works/pi-coding-agent": {
+					"optional": true
+				},
+				"typebox": {
+					"optional": true
+				}
+			}
+		}
+	}
+}