diff --git a/examples/category-schema.v0.json b/examples/category-schema.v0.json
new file mode 100644
index 0000000..ab0d7d6
--- /dev/null
+++ b/examples/category-schema.v0.json
@@ -0,0 +1,13 @@
+{
+  "schema_version": "memact.category_schema.v0",
+  "id": "cat-001",
+  "name": "Technology",
+  "version": "1.0.0",
+  "description": "Technology related categories",
+  "contextFields": ["field", "subfield", "topic"],
+  "exampleInputs": ["AI", "blockchain", "cloud computing"],
+  "normalizedOutputShape": { "id": "string", "label": "string" },
+  "wikiTemplates": ["{{TechBox}}"],
+  "permissionSuggestions": ["read", "write"],
+  "safetyNotes": "Ensure accurate classification before submission"
+}
\ No newline at end of file
diff --git a/src/contracts/category-schema.v0.mjs b/src/contracts/category-schema.v0.mjs
new file mode 100644
index 0000000..8e378f8
--- /dev/null
+++ b/src/contracts/category-schema.v0.mjs
@@ -0,0 +1,17 @@
+import { validateObject } from "../validators.mjs"
+
+export function validateCategorySchema(value) {
+  return validateObject(value, [
+    { key: "schema_version", const: "memact.category_schema.v0" },
+    { key: "id",          type: "string",  required: true },
+    { key: "name",        type: "string",  required: true },
+    { key: "version",     type: "string",  required: true },
+    { key: "description", type: "string" },
+    { key: "contextFields",          type: "array" },
+    { key: "exampleInputs",          type: "array" },
+    { key: "normalizedOutputShape",  type: "object" },
+    { key: "wikiTemplates",          type: "array" },
+    { key: "permissionSuggestions",  type: "array" },
+    { key: "safetyNotes", type: "string" }
+  ])
+}
\ No newline at end of file
diff --git a/src/index.mjs b/src/index.mjs
index fe4f810..0da5a88 100644
--- a/src/index.mjs
+++ b/src/index.mjs
@@ -6,3 +6,4 @@ export { validateFeatureManifest } from "./contracts/feature-manifest.v0.mjs"
 export { validateFeatureRunRequest, validateFeatureRunResult } from "./contracts/feature-run.v0.mjs"
 export { validateAccessPolicy } from "./contracts/access-policy.v0.mjs"
 export { validateApiError } from "./contracts/api-error.v0.mjs"
+export { validateCategorySchema } from "./contracts/category-schema.v0.mjs"
\ No newline at end of file
diff --git a/test/contracts.test.mjs b/test/contracts.test.mjs
index a2a4a58..9d9b2ff 100644
--- a/test/contracts.test.mjs
+++ b/test/contracts.test.mjs
@@ -77,3 +77,69 @@ test("invalid feature result status fails", () => {
     generated_at: new Date().toISOString()
   }).ok, false)
 })
+import { validateCategorySchema } from "../src/index.mjs"
+
+test("valid minimal category schema passes", () => {
+  const result = validateCategorySchema({
+    schema_version: "memact.category_schema.v0",
+    id: "cat-001",
+    name: "Technology",
+    version: "1.0.0"
+  })
+  assert.equal(result.ok, true)
+})
+
+test("valid full category schema passes", () => {
+  const result = validateCategorySchema({
+    schema_version: "memact.category_schema.v0",
+    id: "cat-002",
+    name: "Science",
+    version: "2.0.0",
+    description: "All science related categories",
+    contextFields: ["field", "subfield"],
+    exampleInputs: ["biology", "chemistry"],
+    normalizedOutputShape: { id: "string", label: "string" },
+    wikiTemplates: ["{{ScienceBox}}"],
+    permissionSuggestions: ["read", "write"],
+    safetyNotes: "Ensure accurate classification"
+  })
+  assert.equal(result.ok, true)
+})
+
+test("missing id fails", () => {
+  const result = validateCategorySchema({
+    schema_version: "memact.category_schema.v0",
+    name: "Technology",
+    version: "1.0.0"
+  })
+  assert.equal(result.ok, false)
+})
+
+test("missing name fails", () => {
+  const result = validateCategorySchema({
+    schema_version: "memact.category_schema.v0",
+    id: "cat-003",
+    version: "1.0.0"
+  })
+  assert.equal(result.ok, false)
+})
+
+test("missing version fails", () => {
+  const result = validateCategorySchema({
+    schema_version: "memact.category_schema.v0",
+    id: "cat-004",
+    name: "Health"
+  })
+  assert.equal(result.ok, false)
+})
+
+test("wrong type for contextFields fails", () => {
+  const result = validateCategorySchema({
+    schema_version: "memact.category_schema.v0",
+    id: "cat-005",
+    name: "Tech",
+    version: "1.0.0",
+    contextFields: "not-an-array"
+  })
+  assert.equal(result.ok, false)
+})
\ No newline at end of file