diff --git a/packages/@sanity/codegen/.depcheckrc.json b/packages/@sanity/codegen/.depcheckrc.json
new file mode 100644
index 00000000000..d2b37f0015c
--- /dev/null
+++ b/packages/@sanity/codegen/.depcheckrc.json
@@ -0,0 +1,3 @@
+{
+  "ignores": ["@sanity/pkg-utils"]
+}
diff --git a/packages/@sanity/codegen/.eslintrc.cjs b/packages/@sanity/codegen/.eslintrc.cjs
new file mode 100644
index 00000000000..99fd6c69224
--- /dev/null
+++ b/packages/@sanity/codegen/.eslintrc.cjs
@@ -0,0 +1,11 @@
+'use strict'
+
+const path = require('path')
+
+const ROOT_PATH = path.resolve(__dirname, '../../..')
+
+module.exports = {
+  rules: {
+    'import/no-extraneous-dependencies': ['error', {packageDir: [ROOT_PATH, __dirname]}],
+  },
+}
diff --git a/packages/@sanity/codegen/.gitignore b/packages/@sanity/codegen/.gitignore
new file mode 100644
index 00000000000..52b428d6f80
--- /dev/null
+++ b/packages/@sanity/codegen/.gitignore
@@ -0,0 +1,12 @@
+# Logs
+/logs
+*.log
+
+# Coverage directory used by tools like istanbul
+/coverage
+
+# Dependency directories
+/node_modules
+
+# Compiled code
+/lib
diff --git a/packages/@sanity/codegen/README.md b/packages/@sanity/codegen/README.md
new file mode 100644
index 00000000000..4cb7e1a8288
--- /dev/null
+++ b/packages/@sanity/codegen/README.md
@@ -0,0 +1,3 @@
+# @sanity/codegen
+
+Codegen toolkit for Sanity.io. This package is currently in an experimental state, and subject to change.
diff --git a/packages/@sanity/codegen/jest.config.cjs b/packages/@sanity/codegen/jest.config.cjs
new file mode 100644
index 00000000000..51ecfb62217
--- /dev/null
+++ b/packages/@sanity/codegen/jest.config.cjs
@@ -0,0 +1,8 @@
+'use strict'
+
+const {createJestConfig} = require('../../../test/config.cjs')
+
+module.exports = createJestConfig({
+  displayName: require('./package.json').name,
+  testEnvironment: 'node',
+})
diff --git a/packages/@sanity/codegen/package.config.ts b/packages/@sanity/codegen/package.config.ts
new file mode 100644
index 00000000000..fc4cec4fc5c
--- /dev/null
+++ b/packages/@sanity/codegen/package.config.ts
@@ -0,0 +1,5 @@
+import {defineConfig} from '@sanity/pkg-utils'
+
+import baseConfig from '../../../package.config'
+
+export default defineConfig(baseConfig)
diff --git a/packages/@sanity/codegen/package.json b/packages/@sanity/codegen/package.json
new file mode 100644
index 00000000000..17870b94217
--- /dev/null
+++ b/packages/@sanity/codegen/package.json
@@ -0,0 +1,67 @@
+{
+  "name": "@sanity/codegen",
+  "version": "3.33.0",
+  "description": "Codegen toolkit for Sanity.io",
+  "keywords": [
+    "sanity",
+    "cms",
+    "headless",
+    "realtime",
+    "content",
+    "codegen"
+  ],
+  "homepage": "https://www.sanity.io/",
+  "bugs": {
+    "url": "https://github.com/sanity-io/sanity/issues"
+  },
+  "publishConfig": {
+    "access": "public"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/sanity-io/sanity.git",
+    "directory": "packages/@sanity/codegen"
+  },
+  "license": "MIT",
+  "author": "Sanity.io <hello@sanity.io>",
+  "exports": {
+    ".": {
+      "types": "./lib/dts/src/_exports/index.d.ts",
+      "source": "./src/_exports/index.ts",
+      "require": "./lib/_exports/index.js",
+      "node": {
+        "module": "./lib/_exports/index.esm.js",
+        "import": "./lib/_exports/index.cjs.mjs"
+      },
+      "import": "./lib/_exports/index.esm.js",
+      "default": "./lib/_exports/index.esm.js"
+    },
+    "./package.json": "./package.json"
+  },
+  "main": "./lib/_exports/index.js",
+  "module": "./lib/_exports/index.esm.js",
+  "source": "./src/_exports/index.ts",
+  "types": "./lib/dts/src/_exports/index.d.ts",
+  "files": [
+    "lib",
+    "src",
+    "!**/__tests__/**"
+  ],
+  "scripts": {
+    "prebuild": "run-s clean",
+    "build": "pkg-utils build --tsconfig tsconfig.lib.json",
+    "postbuild": "run-s check:package",
+    "check:package": "pkg-utils --strict --tsconfig tsconfig.lib.json",
+    "clean": "rimraf lib coverage",
+    "lint": "eslint .",
+    "watch": "pkg-utils watch --tsconfig tsconfig.lib.json",
+    "test": "jest"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "rimraf": "^3.0.2"
+  },
+  "engines": {
+    "node": ">=18"
+  }
+}
diff --git a/packages/@sanity/codegen/src/_exports/index.ts b/packages/@sanity/codegen/src/_exports/index.ts
new file mode 100644
index 00000000000..32194a4a2f0
--- /dev/null
+++ b/packages/@sanity/codegen/src/_exports/index.ts
@@ -0,0 +1 @@
+export const TODO = 1
diff --git a/packages/@sanity/codegen/tsconfig.json b/packages/@sanity/codegen/tsconfig.json
new file mode 100644
index 00000000000..dfc2b88930a
--- /dev/null
+++ b/packages/@sanity/codegen/tsconfig.json
@@ -0,0 +1,12 @@
+{
+  "extends": "../../../tsconfig.settings",
+  "include": ["./src/**/*"],
+  "compilerOptions": {
+    "composite": true,
+    "lib": ["ES2022.Error"],
+    "rootDir": ".",
+    "outDir": "./lib/dts",
+    "declarationDir": "./lib/dts"
+  },
+  "references": [{"path": "../types/tsconfig.lib.json"}, {"path": "../../groq/tsconfig.lib.json"}]
+}
diff --git a/packages/@sanity/codegen/tsconfig.lib.json b/packages/@sanity/codegen/tsconfig.lib.json
new file mode 100644
index 00000000000..dfc2b88930a
--- /dev/null
+++ b/packages/@sanity/codegen/tsconfig.lib.json
@@ -0,0 +1,12 @@
+{
+  "extends": "../../../tsconfig.settings",
+  "include": ["./src/**/*"],
+  "compilerOptions": {
+    "composite": true,
+    "lib": ["ES2022.Error"],
+    "rootDir": ".",
+    "outDir": "./lib/dts",
+    "declarationDir": "./lib/dts"
+  },
+  "references": [{"path": "../types/tsconfig.lib.json"}, {"path": "../../groq/tsconfig.lib.json"}]
+}
diff --git a/packages/@sanity/codegen/tsdoc.json b/packages/@sanity/codegen/tsdoc.json
new file mode 100644
index 00000000000..0700c7d44a6
--- /dev/null
+++ b/packages/@sanity/codegen/tsdoc.json
@@ -0,0 +1,33 @@
+{
+  "$schema": "https://developer.microsoft.com/json-schemas/tsdoc/v0/tsdoc.schema.json",
+  "tagDefinitions": [
+    {
+      "tagName": "@hidden",
+      "syntaxKind": "block",
+      "allowMultiple": true
+    },
+    {
+      "tagName": "@todo",
+      "syntaxKind": "block",
+      "allowMultiple": true
+    }
+  ],
+  "supportForTags": {
+    "@hidden": true,
+    "@beta": true,
+    "@internal": true,
+    "@public": true,
+    "@experimental": true,
+    "@see": true,
+    "@link": true,
+    "@example": true,
+    "@deprecated": true,
+    "@alpha": true,
+    "@param": true,
+    "@returns": true,
+    "@remarks": true,
+    "@throws": true,
+    "@defaultValue": true,
+    "@todo": true
+  }
+}
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index db9e4c59169..b6a9e6dac84 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -837,6 +837,12 @@ importers:
         specifier: ^4.0.0
         version: 4.0.0
 
+  packages/@sanity/codegen:
+    devDependencies:
+      rimraf:
+        specifier: ^3.0.2
+        version: 3.0.2
+
   packages/@sanity/diff:
     dependencies:
       '@sanity/diff-match-patch':
diff --git a/tsconfig.json b/tsconfig.json
index c242407e6da..dbdd3859010 100644
--- a/tsconfig.json
+++ b/tsconfig.json
@@ -13,6 +13,7 @@
     {"path": "./packages/@sanity/mutator"},
     {"path": "./packages/@sanity/portable-text-editor"},
     {"path": "./packages/@sanity/schema"},
+    {"path": "./packages/@sanity/codegen"},
     {"path": "./packages/@sanity/types"},
     {"path": "./packages/@sanity/util"},
     {"path": "./packages/@sanity/vision"},