diff --git a/src/lib/AGENTS.md b/src/lib/AGENTS.md
index 9907e90..8662a22 100644
--- a/src/lib/AGENTS.md
+++ b/src/lib/AGENTS.md
@@ -12,7 +12,7 @@ Shared utilities and infrastructure layers used across the application.
 
 **Purpose**: Input validation and type safety using Zod schemas
 
-- `ProjectInputSchema`: Project data validation (1-10 tags, 1-10 links)
+- `ProjectInputSchema`: Project data validation (1+ tags, 1-10 links)
 - `WebhookPayloadSchema`: Webhook request validation with API key auth
 - `KeywordInputSchema`: Keyword cloud data with visual config
 - `ProjectQuerySchema`: Query parameter validation (search, tags, status, pagination)
diff --git a/src/lib/validations.test.ts b/src/lib/validations.test.ts
index 78f7607..90f505b 100644
--- a/src/lib/validations.test.ts
+++ b/src/lib/validations.test.ts
@@ -1,5 +1,5 @@
 import { describe, it, expect } from 'vitest';
-import { AIEventInputSchema } from './validations';
+import { AIEventInputSchema, ProjectInputSchema } from './validations';
 
 describe('AIEventInputSchema', () => {
   const validEvent = {
@@ -62,3 +62,34 @@ describe('AIEventInputSchema', () => {
     })).toThrow();
   });
 });
+
+describe('ProjectInputSchema', () => {
+  const baseProjectInput = {
+    name: 'Agent Park',
+    description: 'A curated list of practical AI agent tools.',
+    tags: [{ name: 'ai-agent' }],
+    links: [{ type: 'GITHUB' as const, url: 'https://github.com/example/repo' }],
+  };
+
+  it('should allow more than 10 tags', () => {
+    const manyTags = Array.from({ length: 20 }, (_, index) => ({
+      name: `tag-${index + 1}`,
+    }));
+
+    expect(() =>
+      ProjectInputSchema.parse({
+        ...baseProjectInput,
+        tags: manyTags,
+      })
+    ).not.toThrow();
+  });
+
+  it('should still require at least one tag', () => {
+    expect(() =>
+      ProjectInputSchema.parse({
+        ...baseProjectInput,
+        tags: [],
+      })
+    ).toThrow();
+  });
+});
diff --git a/src/lib/validations.ts b/src/lib/validations.ts
index 27ecb4c..6c251c5 100644
--- a/src/lib/validations.ts
+++ b/src/lib/validations.ts
@@ -49,7 +49,7 @@ export const ProjectBaseSchema = z.object({
 });
 
 export const ProjectInputSchema = ProjectBaseSchema.extend({
-  tags: z.array(TagSchema).min(1, "At least one tag is required").max(10),
+  tags: z.array(TagSchema).min(1, "At least one tag is required"),
   links: z.array(ExternalLinkSchema).min(1, "At least one link is required").max(10),
 });