diff --git a/src/lib/data/list-variants.ts b/src/lib/data/list-variants.ts
new file mode 100644
index 0000000..2596b2a
--- /dev/null
+++ b/src/lib/data/list-variants.ts
@@ -0,0 +1,10 @@
+export const VARIANT = {
+  standard: "Standard",
+  checklist: "Checklist",
+  project: "Project",
+} as const;
+
+export const VARIANTS = Object.values(VARIANT) as unknown as readonly [
+  string,
+  ...string[],
+];
diff --git a/src/lib/data/task-labels.ts b/src/lib/data/task-labels.ts
new file mode 100644
index 0000000..229cd53
--- /dev/null
+++ b/src/lib/data/task-labels.ts
@@ -0,0 +1,13 @@
+export const LABEL = {
+  feature: "Feature",
+  bug: "Bug",
+  docs: "Docs",
+  chore: "Chore",
+  refactor: "Refactor",
+  build: "Build",
+} as const;
+
+export const LABELS = Object.values(LABEL) as unknown as readonly [
+  string,
+  ...string[],
+];
diff --git a/src/lib/data/task-priority.ts b/src/lib/data/task-priority.ts
new file mode 100644
index 0000000..b2631f3
--- /dev/null
+++ b/src/lib/data/task-priority.ts
@@ -0,0 +1,10 @@
+export const PRIORITY = {
+  high: "High",
+  medium: "Medium",
+  low: "Low",
+} as const;
+
+export const PRIORITIES = Object.values(PRIORITY) as unknown as readonly [
+  string,
+  ...string[],
+];
diff --git a/src/lib/data/task-status.ts b/src/lib/data/task-status.ts
new file mode 100644
index 0000000..082371b
--- /dev/null
+++ b/src/lib/data/task-status.ts
@@ -0,0 +1,12 @@
+export const STATUS = {
+  backlog: "Backlog",
+  todo: "Todo",
+  inProgress: "In Progress",
+  done: "Done",
+  canceled: "Canceled",
+} as const;
+
+export const STATUSES = Object.values(STATUS) as unknown as readonly [
+  string,
+  ...string[],
+];
diff --git a/src/lib/schemas/list-creation-form.ts b/src/lib/schemas/list-creation-form.ts
new file mode 100644
index 0000000..ba44194
--- /dev/null
+++ b/src/lib/schemas/list-creation-form.ts
@@ -0,0 +1,13 @@
+import { z } from "zod";
+import { LABELS } from "~/lib/data/task-labels";
+import { VARIANTS } from "~/lib/data/list-variants";
+
+export const listNameSchema = z.string().max(128);
+
+export const listCreationFormSchema = z.object({
+  name: listNameSchema, // Text
+  variant: z.union([z.enum(VARIANTS).optional(), z.literal("")]), // Radio group
+  labels: z.array(z.enum(LABELS)), // Checkbox group
+  id: z.boolean(), // Checkbox
+  idPrefix: z.string().max(8), // Text
+});
diff --git a/src/lib/schemas/task-creation-form.ts b/src/lib/schemas/task-creation-form.ts
new file mode 100644
index 0000000..7400fbb
--- /dev/null
+++ b/src/lib/schemas/task-creation-form.ts
@@ -0,0 +1,3 @@
+import { z } from "zod";
+
+export const taskCreationFormSchema = z.object({});
diff --git a/src/server/api/root.ts b/src/server/api/root.ts
index 51e2498..8e7029b 100644
--- a/src/server/api/root.ts
+++ b/src/server/api/root.ts
@@ -1,4 +1,5 @@
-// import { postRouter } from "~/server/api/routers/post";
+import { listRouter } from "~/server/api/routers/lists";
+import { tasksRouter } from "~/server/api/routers/tasks";
 import { createCallerFactory, createTRPCRouter } from "~/server/api/trpc";
 
 /**
@@ -7,7 +8,8 @@ import { createCallerFactory, createTRPCRouter } from "~/server/api/trpc";
  * All routers added in /api/routers should be manually added here.
  */
 export const appRouter = createTRPCRouter({
-  // post: postRouter,
+  list: listRouter,
+  tasks: tasksRouter,
 });
 
 // export type definition of API
diff --git a/src/server/api/routers/lists.ts b/src/server/api/routers/lists.ts
new file mode 100644
index 0000000..10cc8b7
--- /dev/null
+++ b/src/server/api/routers/lists.ts
@@ -0,0 +1,43 @@
+import { z } from "zod";
+import {
+  listCreationFormSchema,
+  listNameSchema,
+} from "~/lib/schemas/list-creation-form";
+
+import { createTRPCRouter, protectedProcedure } from "~/server/api/trpc";
+
+export const listRouter = createTRPCRouter({
+  create: protectedProcedure
+    .input(listCreationFormSchema)
+    .mutation(async ({ ctx, input }) => {
+      return [];
+    }),
+  getAll: protectedProcedure.query(async ({ ctx }) => {
+    return [
+      { id: 0, name: "Groceries" },
+      { id: 1, name: "Christmas" },
+      { id: 2, name: "Salt Seeker" },
+      { id: 3, name: "Maize Walker" },
+      { id: 4, name: "Sympathy for the Machine" },
+      {
+        id: 4,
+        name: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor elit incididunt ut labore et dolore magna aliqua.",
+      },
+    ];
+  }),
+  get: protectedProcedure
+    .input(z.object({ listId: z.number() }))
+    .query(async ({ ctx, input }) => {
+      return { name: "Groceries", data: [] };
+    }),
+  update: protectedProcedure
+    .input(z.object({ listId: z.number(), name: listNameSchema }))
+    .mutation(async ({ ctx, input }) => {
+      return [];
+    }),
+  delete: protectedProcedure
+    .input(z.object({ listId: z.number() }))
+    .mutation(async ({ ctx, input }) => {
+      return [];
+    }),
+});
diff --git a/src/server/api/routers/post.ts b/src/server/api/routers/post.ts
deleted file mode 100644
index 7a296c9..0000000
--- a/src/server/api/routers/post.ts
+++ /dev/null
@@ -1,39 +0,0 @@
-// import { z } from "zod";
-
-// import {
-//   createTRPCRouter,
-//   protectedProcedure,
-//   publicProcedure,
-// } from "~/server/api/trpc";
-// import { posts } from "~/server/db/schema";
-
-// export const postRouter = createTRPCRouter({
-//   hello: publicProcedure
-//     .input(z.object({ text: z.string() }))
-//     .query(({ input }) => {
-//       return {
-//         greeting: `Hello ${input.text}`,
-//       };
-//     }),
-
-//   create: protectedProcedure
-//     .input(z.object({ name: z.string().min(1) }))
-//     .mutation(async ({ ctx, input }) => {
-//       await ctx.db.insert(posts).values({
-//         name: input.name,
-//         createdById: ctx.session.user.id,
-//       });
-//     }),
-
-//   getLatest: protectedProcedure.query(async ({ ctx }) => {
-//     const post = await ctx.db.query.posts.findFirst({
-//       orderBy: (posts, { desc }) => [desc(posts.createdAt)],
-//     });
-
-//     return post ?? null;
-//   }),
-
-//   getSecretMessage: protectedProcedure.query(() => {
-//     return "you can now see this secret message!";
-//   }),
-// });
diff --git a/src/server/api/routers/tasks.ts b/src/server/api/routers/tasks.ts
new file mode 100644
index 0000000..205f6b7
--- /dev/null
+++ b/src/server/api/routers/tasks.ts
@@ -0,0 +1,12 @@
+import { z } from "zod";
+import { taskCreationFormSchema } from "~/lib/schemas/task-creation-form";
+
+import { createTRPCRouter, protectedProcedure } from "~/server/api/trpc";
+
+export const tasksRouter = createTRPCRouter({
+  create: protectedProcedure
+    .input(taskCreationFormSchema)
+    .mutation(async ({ ctx, input }) => {
+      //
+    }),
+});