diff --git a/.gitignore b/.gitignore
index 890e9c97..5b912745 100644
--- a/.gitignore
+++ b/.gitignore
@@ -82,3 +82,5 @@ npm-audit.txt
 *.debug.js
 
 .vscode/
+
+config-errors.txt
diff --git a/backend/package.json b/backend/package.json
index fbbe2ddc..b23dd8b6 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -24,6 +24,7 @@
     "migrate-rollback": "npm run typeorm -- migration:revert -d dist/backend/src/data/dataSource.js",
     "migrate-rollback-prod": "cross-env NODE_ENV=production npm run migrate",
     "migrate-rollback-dev": "cross-env NODE_ENV=development npm run build && npm run migrate",
+    "validate-active-configs": "cross-env NODE_ENV=development node -r ./register-tsconfig-paths.js --unhandled-rejections=strict --enable-source-maps dist/backend/src/validateActiveConfigs.js > ../config-errors.txt",
     "test": "npm run build && npm run run-tests",
     "run-tests": "ava",
     "test-watch": "tsc-watch --onSuccess \"npx ava\""
diff --git a/backend/src/data/db.ts b/backend/src/data/db.ts
index a4f9b88b..f8d8f3bf 100644
--- a/backend/src/data/db.ts
+++ b/backend/src/data/db.ts
@@ -15,3 +15,9 @@ export function connect() {
 
   return connectionPromise;
 }
+
+export function disconnect() {
+  if (connectionPromise) {
+    connectionPromise.then(() => dataSource.destroy());
+  }
+}
diff --git a/backend/src/validateActiveConfigs.ts b/backend/src/validateActiveConfigs.ts
new file mode 100644
index 00000000..c9e3414b
--- /dev/null
+++ b/backend/src/validateActiveConfigs.ts
@@ -0,0 +1,46 @@
+import { YAMLException } from "js-yaml";
+import { validateGuildConfig } from "./configValidator";
+import { Configs } from "./data/Configs";
+import { connect, disconnect } from "./data/db";
+import { loadYamlSafely } from "./utils/loadYamlSafely";
+import { ObjectAliasError } from "./utils/validateNoObjectAliases";
+
+function writeError(key: string, error: string) {
+  const indented = error.split("\n").map(s => " ".repeat(64) + s).join("\n");
+  const prefix = `Invalid config ${key}:`;
+  const prefixed = prefix + indented.slice(prefix.length);
+  console.log(prefixed + "\n\n");
+}
+
+connect().then(async () => {
+  const configs = new Configs();
+  const activeConfigs = await configs.getActive();
+  for (const config of activeConfigs) {
+    if (config.key === "global") {
+      continue;
+    }
+
+    let parsed: unknown;
+    try {
+      parsed = loadYamlSafely(config.config);
+    } catch (err) {
+      if (err instanceof ObjectAliasError) {
+        writeError(config.key, err.message);
+        continue;
+      }
+      if (err instanceof YAMLException) {
+        writeError(config.key, `invalid YAML: ${err.message}`);
+        continue;
+      }
+      throw err;
+    }
+
+    const errors = await validateGuildConfig(parsed);
+    if (errors) {
+      writeError(config.key, errors);
+    }
+  }
+
+  await disconnect();
+  process.exit(0);
+});