diff --git a/src/IScribeFactory.sol b/src/IScribeFactory.sol
index 97acaf3..2e1a2ba 100644
--- a/src/IScribeFactory.sol
+++ b/src/IScribeFactory.sol
@@ -66,4 +66,16 @@ interface IScribeFactory {
     function plantRouter(ScribeRouterConfig calldata cfg)
         external
         returns (address);
+
+    /// @notice Returns whether `addr` is a Scribe instance deployed by this
+    ///         factory.
+    /// @param addr The address to query.
+    /// @return True if `addr` was deployed as a Scribe by this factory.
+    function isScribe(address addr) external view returns (bool);
+
+    /// @notice Returns whether `addr` is a ScribeRouter instance deployed by
+    ///         this factory.
+    /// @param addr The address to query.
+    /// @return True if `addr` was deployed as a ScribeRouter by this factory.
+    function isRouter(address addr) external view returns (bool);
 }
diff --git a/src/ScribeFactory.sol b/src/ScribeFactory.sol
index 50071e9..3f80aa9 100644
--- a/src/ScribeFactory.sol
+++ b/src/ScribeFactory.sol
@@ -21,6 +21,12 @@ import {LibSecp256k1} from "./libs/LibSecp256k1.sol";
  * @custom:security-contact security@chroniclelabs.org
  */
 contract ScribeFactory is IScribeFactory, Auth, Toll {
+    /// @inheritdoc IScribeFactory
+    mapping(address => bool) public isScribe;
+
+    /// @inheritdoc IScribeFactory
+    mapping(address => bool) public isRouter;
+
     constructor(address initialAuthed) payable Auth(initialAuthed) {}
 
     /// @inheritdoc IScribeFactory
@@ -71,6 +77,7 @@ contract ScribeFactory is IScribeFactory, Auth, Toll {
     function _plantScribe(ScribeConfig calldata cfg) internal returns (Scribe) {
         // Deploy scribe.
         Scribe scribe = new Scribe(address(this), cfg.wat);
+        isScribe[address(scribe)] = true;
         emit ScribeDeployed(msg.sender, address(scribe), cfg.name);
 
         // Lift validators and set bar.
@@ -97,6 +104,7 @@ contract ScribeFactory is IScribeFactory, Auth, Toll {
     {
         // Deploy router.
         ScribeRouter router = new ScribeRouter(address(this), cfg.name);
+        isRouter[address(router)] = true;
         emit ScribeRouterDeployed(msg.sender, address(router), cfg.name);
 
         // Rely authed and kiss tolled.
diff --git a/test/IScribeFactoryTest.sol b/test/IScribeFactoryTest.sol
index 78f17aa..efd1e8c 100644
--- a/test/IScribeFactoryTest.sol
+++ b/test/IScribeFactoryTest.sol
@@ -160,6 +160,10 @@ abstract contract IScribeFactoryTest is Test {
 
         // Factory denied.
         assertFalse(IAuth(scribe).authed(address(factory)));
+
+        // Tracked as scribe, not as router.
+        assertTrue(factory.isScribe(scribe));
+        assertFalse(factory.isRouter(scribe));
     }
 
     // -- Test: plantRouter --
@@ -192,6 +196,10 @@ abstract contract IScribeFactoryTest is Test {
 
         // Scribe not set.
         assertEq(IScribeRouter(router).scribe(), address(0));
+
+        // Tracked as router, not as scribe.
+        assertTrue(factory.isRouter(router));
+        assertFalse(factory.isScribe(router));
     }
 
     // -- Test: plantScribeWithRouter --
@@ -236,6 +244,10 @@ abstract contract IScribeFactoryTest is Test {
         // Factory denied.
         assertFalse(IAuth(scribe).authed(address(factory)));
 
+        // Tracked as scribe, not as router.
+        assertTrue(factory.isScribe(scribe));
+        assertFalse(factory.isRouter(scribe));
+
         // -- ScribeRouter Checks
 
         // Name set.
@@ -254,6 +266,10 @@ abstract contract IScribeFactoryTest is Test {
 
         // Factory denied.
         assertFalse(IAuth(router).authed(address(factory)));
+
+        // Tracked as router, not as scribe.
+        assertTrue(factory.isRouter(router));
+        assertFalse(factory.isScribe(router));
     }
 
     // -- Test: Toll Protection --