diff --git a/cli/src/commands/connections.ts b/cli/src/commands/connections.ts
index d897b47..7d1105f 100644
--- a/cli/src/commands/connections.ts
+++ b/cli/src/commands/connections.ts
@@ -1,6 +1,6 @@
 import { Command } from "commander";
 import chalk from "chalk";
-import { requireConfig, saveConfig, loadConfig } from "../config.js";
+import { requireConfig, saveConfig } from "../config.js";
 import { AskdbClient } from "../api.js";
 
 export const connectionsCommand = new Command("connections")
diff --git a/packages/mcp-server/src/code-mode/runtime.test.ts b/packages/mcp-server/src/code-mode/runtime.test.ts
index 4b8025d..196406b 100644
--- a/packages/mcp-server/src/code-mode/runtime.test.ts
+++ b/packages/mcp-server/src/code-mode/runtime.test.ts
@@ -255,7 +255,7 @@ test("makeBridge forwards its connectionId so sandbox calls hit the chosen DB",
   await bridge.external_find({ collection: "users" });
 
   assert.equal(
-    (calls[0]?.parsed as { connectionId?: string }).connectionId,
+    (calls[0]?.parsed as { connectionId?: string })?.connectionId,
     "conn_multi"
   );
 });
diff --git a/packages/mcp-server/src/index.ts b/packages/mcp-server/src/index.ts
index 8b44e79..1b271f6 100644
--- a/packages/mcp-server/src/index.ts
+++ b/packages/mcp-server/src/index.ts
@@ -20,7 +20,6 @@ import {
   schema,
   eq,
   and,
-  isNull,
   inArray,
   desc,
   generateCollectionDetailMarkdown,
diff --git a/packages/shared/src/crypto/encryption.ts b/packages/shared/src/crypto/encryption.ts
index d2c43e6..4054324 100644
--- a/packages/shared/src/crypto/encryption.ts
+++ b/packages/shared/src/crypto/encryption.ts
@@ -2,7 +2,6 @@ import { randomBytes, createCipheriv, createDecipheriv } from "crypto";
 
 const ALGORITHM = "aes-256-gcm";
 const IV_LENGTH = 16;
-const AUTH_TAG_LENGTH = 16;
 
 function getKey(): Buffer {
   const hex = process.env.ENCRYPTION_KEY;
diff --git a/server/src/index.ts b/server/src/index.ts
index 117ee9e..8b35fb9 100644
--- a/server/src/index.ts
+++ b/server/src/index.ts
@@ -2,7 +2,7 @@ import path from "node:path";
 import { fileURLToPath } from "node:url";
 import { existsSync } from "node:fs";
 import { config as loadEnv } from "dotenv";
-import rateLimit from "express-rate-limit";
+import { rateLimit } from "express-rate-limit";
 import cookieParser from "cookie-parser";
 import { CSP_DIRECTIVES } from "./lib/csp.js";