diff --git a/vector-api/package.json b/vector-api/package.json
index 21fd5b8..8fdd788 100644
--- a/vector-api/package.json
+++ b/vector-api/package.json
@@ -21,6 +21,7 @@
     "wrangler": "^3.50.0"
   },
   "dependencies": {
+    "@hono/zod-validator": "^0.2.1",
     "@types/body-parser": "^1.19.5",
     "@upstash/vector": "^1.0.7",
     "body-parser": "^1.20.2",
@@ -29,6 +30,7 @@
     "hono": "^4.2.4",
     "langchain": "^0.1.34",
     "openai": "^4.35.0",
-    "ts-node": "^10.9.2"
+    "ts-node": "^10.9.2",
+    "zod": "^3.23.7"
   }
 }
diff --git a/vector-api/pnpm-lock.yaml b/vector-api/pnpm-lock.yaml
index 4f9bc7d..8337f6f 100644
--- a/vector-api/pnpm-lock.yaml
+++ b/vector-api/pnpm-lock.yaml
@@ -1,6 +1,13 @@
 lockfileVersion: '6.0'
 
+settings:
+  autoInstallPeers: true
+  excludeLinksFromLockfile: false
+
 dependencies:
+  '@hono/zod-validator':
+    specifier: ^0.2.1
+    version: 0.2.1(hono@4.2.4)(zod@3.23.7)
   '@types/body-parser':
     specifier: ^1.19.5
     version: 1.19.5
@@ -28,6 +35,9 @@ dependencies:
   ts-node:
     specifier: ^10.9.2
     version: 10.9.2(@types/node@20.12.7)(typescript@5.4.5)
+  zod:
+    specifier: ^3.23.7
+    version: 3.23.7
 
 devDependencies:
   '@types/cors':
@@ -555,6 +565,16 @@ packages:
     engines: {node: '>=14'}
     dev: true
 
+  /@hono/zod-validator@0.2.1(hono@4.2.4)(zod@3.23.7):
+    resolution: {integrity: sha512-HFoxln7Q6JsE64qz2WBS28SD33UB2alp3aRKmcWnNLDzEL1BLsWfbdX6e1HIiUprHYTIXf5y7ax8eYidKUwyaA==}
+    peerDependencies:
+      hono: '>=3.9.0'
+      zod: ^3.19.1
+    dependencies:
+      hono: 4.2.4
+      zod: 3.23.7
+    dev: false
+
   /@jridgewell/resolve-uri@3.1.2:
     resolution: {integrity: sha512-bRISgCIjP20/tbWSPWMEi54QVPRZExkuD9lJL+UIxUKtwVJA8wW1Trb1jMs1RFXo1CBTNZ/5hpC9QvmKWdopKw==}
     engines: {node: '>=6.0.0'}
@@ -854,8 +874,8 @@ packages:
       flat: 5.0.2
       langsmith: 0.1.18
       uuid: 9.0.1
-      zod: 3.22.4
-      zod-to-json-schema: 3.22.5(zod@3.22.4)
+      zod: 3.23.7
+      zod-to-json-schema: 3.22.5(zod@3.23.7)
     transitivePeerDependencies:
       - encoding
     dev: false
@@ -874,8 +894,8 @@ packages:
       p-queue: 6.6.2
       p-retry: 4.6.2
       uuid: 9.0.1
-      zod: 3.22.4
-      zod-to-json-schema: 3.22.5(zod@3.22.4)
+      zod: 3.23.7
+      zod-to-json-schema: 3.22.5(zod@3.23.7)
     dev: false
 
   /@langchain/openai@0.0.28:
@@ -885,8 +905,8 @@ packages:
       '@langchain/core': 0.1.58
       js-tiktoken: 1.0.11
       openai: 4.35.0
-      zod: 3.22.4
-      zod-to-json-schema: 3.22.5(zod@3.22.4)
+      zod: 3.23.7
+      zod-to-json-schema: 3.22.5(zod@3.23.7)
     transitivePeerDependencies:
       - encoding
     dev: false
@@ -1797,8 +1817,8 @@ packages:
       p-retry: 4.6.2
       uuid: 9.0.1
       yaml: 2.4.1
-      zod: 3.22.4
-      zod-to-json-schema: 3.22.5(zod@3.22.4)
+      zod: 3.23.7
+      zod-to-json-schema: 3.22.5(zod@3.23.7)
     transitivePeerDependencies:
       - '@aws-crypto/sha256-js'
       - '@aws-sdk/client-bedrock-agent-runtime'
@@ -1947,7 +1967,7 @@ packages:
       workerd: 1.20240405.0
       ws: 8.16.0
       youch: 3.3.3
-      zod: 3.22.4
+      zod: 3.23.7
     transitivePeerDependencies:
       - bufferutil
       - supports-color
@@ -2601,13 +2621,13 @@ packages:
       stacktracey: 2.1.8
     dev: true
 
-  /zod-to-json-schema@3.22.5(zod@3.22.4):
+  /zod-to-json-schema@3.22.5(zod@3.23.7):
     resolution: {integrity: sha512-+akaPo6a0zpVCCseDed504KBJUQpEW5QZw7RMneNmKw+fGaML1Z9tUNLnHHAC8x6dzVRO1eB2oEMyZRnuBZg7Q==}
     peerDependencies:
       zod: ^3.22.4
     dependencies:
-      zod: 3.22.4
+      zod: 3.23.7
     dev: false
 
-  /zod@3.22.4:
-    resolution: {integrity: sha512-iC+8Io04lddc+mVqQ9AZ7OQ2MrUKGN+oIQyq1vemgt46jwCwLfhq7/pwnBnNXXXZb8VTVLKwp9EDkx+ryxIWmg==}
+  /zod@3.23.7:
+    resolution: {integrity: sha512-NBeIoqbtOiUMomACV/y+V3Qfs9+Okr18vR5c/5pHClPpufWOrsx8TENboDPe265lFdfewX2yBtNTLPvnmCxwog==}
diff --git a/vector-api/src/index.ts b/vector-api/src/index.ts
index 9f92e85..46e7b79 100644
--- a/vector-api/src/index.ts
+++ b/vector-api/src/index.ts
@@ -3,6 +3,8 @@ import { Hono } from 'hono'
 import { env } from 'hono/adapter'
 import { cors } from 'hono/cors'
 import { RecursiveCharacterTextSplitter } from 'langchain/text_splitter'
+import { zValidator } from '@hono/zod-validator';
+import { z } from 'zod'
 
 const semanticSplitter = new RecursiveCharacterTextSplitter({
   chunkSize: 25,
@@ -24,11 +26,11 @@ const app = new Hono()
 
 app.use(cors())
 
-app.post('/', async (c) => {
-  if (c.req.header('Content-Type') !== 'application/json') {
-    return c.json({ error: 'JSON body expected.' }, { status: 406 })
-  }
+const zodSchema = z.object({
+  message: z.string().min(1, { message: "Message argument is required." }) 
+})
 
+app.post('/', zValidator('json', zodSchema), async (c) => {
   try {
     const { VECTOR_TOKEN, VECTOR_URL } = env<Environment>(c)
 
@@ -38,12 +40,7 @@ app.post('/', async (c) => {
       cache: false, // disable needed for cf worker deployment
     })
 
-    const body = await c.req.json()
-    let { message } = body as { message: string }
-
-    if (!message) {
-      return c.json({ error: 'Message argument is required.' }, { status: 400 })
-    }
+    let { message } = c.req.valid('json');
 
     // this is because of the cloudflare worker sub-request limit
     if (message.split(/\s/).length > 35 || message.length > 1000) {