diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 13bf7f8d..8c1b994c 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -5,11 +5,15 @@ on:
     paths:
       - "docs/**"
       - "DOCS_GUIDELINES.md"
+      - "packages/core/schemas/**"
+      - "scripts/sync-schemas.ts"
   push:
     branches: [main]
     paths:
       - "docs/**"
       - "DOCS_GUIDELINES.md"
+      - "packages/core/schemas/**"
+      - "scripts/sync-schemas.ts"
 
 concurrency:
   group: docs-${{ github.ref }}
@@ -27,6 +31,9 @@ jobs:
         with:
           node-version: 22
 
+      - name: Check schema mirror (core → docs)
+        run: npx tsx scripts/sync-schemas.ts --check
+
       - name: Validate build
         working-directory: docs
         run: npx mint validate
diff --git a/docs/schema/hyperframes.json b/docs/schema/hyperframes.json
new file mode 100644
index 00000000..f75be026
--- /dev/null
+++ b/docs/schema/hyperframes.json
@@ -0,0 +1,45 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://hyperframes.heygen.com/schema/hyperframes.json",
+  "title": "Hyperframes Project Config",
+  "description": "Per-project configuration for a Hyperframes project (hyperframes.json). Tells `hyperframes add` which registry to pull items from and where to drop them in the project tree. Created by `hyperframes init`; users may edit it to point at custom registries or reshape their project layout.",
+  "type": "object",
+  "required": ["registry", "paths"],
+  "additionalProperties": false,
+  "properties": {
+    "$schema": {
+      "type": "string",
+      "format": "uri",
+      "description": "JSON Schema URL — https://hyperframes.heygen.com/schema/hyperframes.json."
+    },
+    "registry": {
+      "type": "string",
+      "format": "uri",
+      "minLength": 1,
+      "description": "Base URL of the registry to pull items from. Point at the official Hyperframes registry or a custom one."
+    },
+    "paths": {
+      "type": "object",
+      "description": "Target paths for each item type, relative to the project root.",
+      "required": ["blocks", "components", "assets"],
+      "additionalProperties": false,
+      "properties": {
+        "blocks": {
+          "type": "string",
+          "minLength": 1,
+          "description": "Where `hyperframes:block` items land. Defaults to `compositions`."
+        },
+        "components": {
+          "type": "string",
+          "minLength": 1,
+          "description": "Where `hyperframes:component` items land. Defaults to `compositions/components`."
+        },
+        "assets": {
+          "type": "string",
+          "minLength": 1,
+          "description": "Where asset files (images, fonts, videos) land. Defaults to `assets`."
+        }
+      }
+    }
+  }
+}
diff --git a/docs/schema/registry-item.json b/docs/schema/registry-item.json
new file mode 100644
index 00000000..ba72da93
--- /dev/null
+++ b/docs/schema/registry-item.json
@@ -0,0 +1,141 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://hyperframes.heygen.com/schema/registry-item.json",
+  "title": "Hyperframes Registry Item",
+  "description": "Manifest for a single distributable item (example, block, or component).",
+  "type": "object",
+  "required": ["name", "type", "title", "description", "files"],
+  "properties": {
+    "$schema": {
+      "type": "string",
+      "format": "uri"
+    },
+    "name": {
+      "type": "string",
+      "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?$",
+      "description": "Item name in kebab-case, must start and end with alphanumeric."
+    },
+    "type": {
+      "type": "string",
+      "enum": ["hyperframes:example", "hyperframes:block", "hyperframes:component"]
+    },
+    "title": {
+      "type": "string",
+      "minLength": 1
+    },
+    "description": {
+      "type": "string",
+      "minLength": 1
+    },
+    "tags": {
+      "type": "array",
+      "items": { "type": "string", "minLength": 1 }
+    },
+    "author": {
+      "type": "string",
+      "minLength": 1
+    },
+    "license": {
+      "type": "string",
+      "minLength": 1,
+      "description": "SPDX license identifier (e.g. \"Apache-2.0\", \"MIT\")."
+    },
+    "minCliVersion": {
+      "type": "string",
+      "pattern": "^\\d+\\.\\d+\\.\\d+(?:-[0-9A-Za-z-]+(?:\\.[0-9A-Za-z-]+)*)?$",
+      "description": "Minimum `hyperframes` CLI version required to install this item."
+    },
+    "deprecated": {
+      "type": "string",
+      "minLength": 1,
+      "description": "If set, the item is deprecated; the value is the reason or migration note."
+    },
+    "dimensions": {
+      "type": "object",
+      "required": ["width", "height"],
+      "additionalProperties": false,
+      "properties": {
+        "width": { "type": "integer", "minimum": 1 },
+        "height": { "type": "integer", "minimum": 1 }
+      }
+    },
+    "duration": {
+      "type": "number",
+      "exclusiveMinimum": 0,
+      "description": "Duration in seconds. Must be > 0."
+    },
+    "registryDependencies": {
+      "type": "array",
+      "items": {
+        "type": "string",
+        "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?$"
+      }
+    },
+    "files": {
+      "type": "array",
+      "minItems": 1,
+      "items": {
+        "type": "object",
+        "required": ["path", "target", "type"],
+        "additionalProperties": false,
+        "properties": {
+          "path": {
+            "type": "string",
+            "minLength": 1,
+            "description": "Source path, relative to registry-item.json."
+          },
+          "target": {
+            "type": "string",
+            "minLength": 1,
+            "description": "Destination path in the user's project, relative to project root. Must not traverse outside the project (no `..` segments, no absolute paths).",
+            "not": {
+              "anyOf": [
+                { "pattern": "(^|[/\\\\])\\.\\.([/\\\\]|$)" },
+                { "pattern": "^[/\\\\]" },
+                { "pattern": "^[A-Za-z]:[/\\\\]" }
+              ]
+            }
+          },
+          "type": {
+            "type": "string",
+            "enum": [
+              "hyperframes:composition",
+              "hyperframes:asset",
+              "hyperframes:snippet",
+              "hyperframes:style",
+              "hyperframes:timeline"
+            ]
+          }
+        }
+      }
+    },
+    "preview": {
+      "type": "object",
+      "additionalProperties": false,
+      "properties": {
+        "video": { "type": "string" },
+        "poster": { "type": "string" }
+      }
+    },
+    "relatedSkill": {
+      "type": "string",
+      "minLength": 1
+    }
+  },
+  "allOf": [
+    {
+      "if": {
+        "required": ["type"],
+        "properties": { "type": { "const": "hyperframes:component" } }
+      },
+      "then": {
+        "not": {
+          "anyOf": [{ "required": ["dimensions"] }, { "required": ["duration"] }]
+        }
+      },
+      "else": {
+        "required": ["dimensions", "duration"]
+      }
+    }
+  ]
+}
diff --git a/docs/schema/registry.json b/docs/schema/registry.json
new file mode 100644
index 00000000..ced96b1f
--- /dev/null
+++ b/docs/schema/registry.json
@@ -0,0 +1,45 @@
+{
+  "$schema": "https://json-schema.org/draft/2020-12/schema",
+  "$id": "https://hyperframes.heygen.com/schema/registry.json",
+  "title": "Hyperframes Registry Manifest",
+  "description": "Top-level manifest describing all items in a Hyperframes registry.",
+  "type": "object",
+  "required": ["name", "homepage", "items"],
+  "additionalProperties": false,
+  "properties": {
+    "$schema": {
+      "type": "string",
+      "format": "uri"
+    },
+    "name": {
+      "type": "string",
+      "minLength": 1,
+      "description": "Registry name (e.g. \"hyperframes\")."
+    },
+    "homepage": {
+      "type": "string",
+      "format": "uri",
+      "description": "Registry homepage URL."
+    },
+    "items": {
+      "type": "array",
+      "description": "Items in this registry. Each entry is a shorthand reference; the full item manifest lives at <type-dir>/<name>/registry-item.json.",
+      "items": {
+        "type": "object",
+        "required": ["name", "type"],
+        "additionalProperties": false,
+        "properties": {
+          "name": {
+            "type": "string",
+            "pattern": "^[a-z0-9]([a-z0-9-]*[a-z0-9])?$",
+            "description": "Item name in kebab-case, must start and end with alphanumeric."
+          },
+          "type": {
+            "type": "string",
+            "enum": ["hyperframes:example", "hyperframes:block", "hyperframes:component"]
+          }
+        }
+      }
+    }
+  }
+}
diff --git a/package.json b/package.json
index e56ce3e9..2497445e 100644
--- a/package.json
+++ b/package.json
@@ -18,6 +18,8 @@
     "build:hyperframes-runtime:modular": "bun run --filter @hyperframes/core build:hyperframes-runtime:modular",
     "verify:packed-manifests": "node scripts/verify-packed-manifests.mjs",
     "set-version": "tsx scripts/set-version.ts",
+    "sync-schemas": "tsx scripts/sync-schemas.ts",
+    "sync-schemas:check": "tsx scripts/sync-schemas.ts --check",
     "lint": "oxlint . && tsx scripts/lint-skills.ts",
     "lint:skills": "tsx scripts/lint-skills.ts",
     "lint:fix": "oxlint --fix .",
diff --git a/scripts/sync-schemas.ts b/scripts/sync-schemas.ts
new file mode 100644
index 00000000..1002d5d3
--- /dev/null
+++ b/scripts/sync-schemas.ts
@@ -0,0 +1,60 @@
+#!/usr/bin/env tsx
+/**
+ * Mirror JSON Schemas from `packages/core/schemas/` into `docs/schema/` so
+ * Mintlify serves them at `https://hyperframes.heygen.com/schema/*`. The core
+ * copies stay authoritative — they're exported from `@hyperframes/core` for
+ * npm consumers — and this script is the single contract that prevents the
+ * docs mirror from drifting.
+ *
+ * Usage:
+ *   bun run sync-schemas         # copy core → docs
+ *   bun run sync-schemas --check # exit non-zero if copies are stale (CI)
+ *
+ * `docs/schema/hyperframes.json` is authored directly in docs (no source in
+ * core) so it's skipped by this script.
+ */
+
+import { readFileSync, writeFileSync } from "node:fs";
+import { join } from "node:path";
+
+const ROOT = join(import.meta.dirname, "..");
+const SOURCE_DIR = join(ROOT, "packages/core/schemas");
+const TARGET_DIR = join(ROOT, "docs/schema");
+const MIRRORED = ["registry.json", "registry-item.json"];
+
+function main() {
+  const checkOnly = process.argv.includes("--check");
+  let drift = 0;
+
+  for (const name of MIRRORED) {
+    const source = readFileSync(join(SOURCE_DIR, name), "utf-8");
+    const targetPath = join(TARGET_DIR, name);
+    const target = (() => {
+      try {
+        return readFileSync(targetPath, "utf-8");
+      } catch {
+        return null;
+      }
+    })();
+
+    if (target === source) {
+      console.log(`  ✓ ${name} in sync`);
+      continue;
+    }
+
+    drift++;
+    if (checkOnly) {
+      console.error(`  ✗ ${name} out of sync (run \`bun run sync-schemas\` to fix)`);
+      continue;
+    }
+    writeFileSync(targetPath, source);
+    console.log(`  → ${name} updated`);
+  }
+
+  if (checkOnly && drift > 0) {
+    console.error(`\n${drift} schema${drift === 1 ? "" : "s"} drifted from source.`);
+    process.exit(1);
+  }
+}
+
+main();