diff --git a/client/config.test.ts b/client/config.test.ts
index f0493d47..7a91d1ae 100644
--- a/client/config.test.ts
+++ b/client/config.test.ts
@@ -8,6 +8,11 @@ Deno.test("Config - basic functionality", () => {
   config.set("testKey", "testValue");
   assertEquals(config.get(["testKey"], null), "testValue");
 
+  // Test insert
+  config.insert("plugs", "plug1");
+  config.insert("plugs", "plug1");
+  assertEquals(config.get("plugs", null), ["plug1", "plug1"]);
+
   // Test default value
   assertEquals(config.get("nonExistentKey", "default"), "default");
 
diff --git a/client/config.ts b/client/config.ts
index 8c17fbca..45ff826a 100644
--- a/client/config.ts
+++ b/client/config.ts
@@ -134,6 +134,27 @@ export class Config {
     }
   }
 
+  insert<T>(
+    key: string | string[],
+    value?: T,
+  ): void {
+    if (typeof key === "string") {
+      key = key.split(".");
+    }
+    const resolved = resolvePath(this.values, key, true);
+    if (resolved) {
+      if (!Array.isArray(resolved.obj[resolved.key])) {
+        resolved.obj[resolved.key] = [];
+      }
+      resolved.obj[resolved.key].push(value);
+    } else {
+      throw new Error(`Invalid key ${key}`);
+    }
+
+    // Find and validate only the relevant schema after the fact...
+    this.validatePath(key);
+  }
+
   /**
    * Checks if a path exists in the config
    * @param path The path to check, supports dot notation (e.g. "foo.bar.baz")
diff --git a/client/plugos/syscalls/config.ts b/client/plugos/syscalls/config.ts
index eff7ac79..1793ac48 100644
--- a/client/plugos/syscalls/config.ts
+++ b/client/plugos/syscalls/config.ts
@@ -13,6 +13,13 @@ export function configSyscalls(config: Config): SysCallMapping {
     ) => {
       config.set(keyOrValues as any, value);
     },
+    "config.insert": (
+      _ctx,
+      key: string | string[],
+      value: any,
+    ) => {
+      config.insert(key, value);
+    },
     "config.has": (_ctx, path: string) => {
       return config.has(path);
     },
diff --git a/plug-api/syscalls/config.ts b/plug-api/syscalls/config.ts
index ad6865da..01ba662f 100644
--- a/plug-api/syscalls/config.ts
+++ b/plug-api/syscalls/config.ts
@@ -28,6 +28,16 @@ export function set<T>(
   return syscall("config.set", pathOrValues, value);
 }
 
+/**
+ * Inserts a config value into an array
+ */
+export function insert<T>(
+  path: string | string[],
+  value: T,
+): Promise<void> {
+  return syscall("config.insert", path, value);
+}
+
 /**
  * Checks if a config path exists.
  * @param path The path to check