diff --git a/src/github/common/types.ts b/src/github/common/types.ts
new file mode 100644
index 00000000..9be60a74
--- /dev/null
+++ b/src/github/common/types.ts
@@ -0,0 +1,132 @@
+import { z } from "zod";
+
+// Base schemas for common types
+export const GitHubAuthorSchema = z.object({
+  name: z.string(),
+  email: z.string(),
+  date: z.string(),
+});
+
+export const GitHubOwnerSchema = z.object({
+  login: z.string(),
+  id: z.number(),
+  node_id: z.string(),
+  avatar_url: z.string(),
+  url: z.string(),
+  html_url: z.string(),
+  type: z.string(),
+});
+
+export const GitHubRepositorySchema = z.object({
+  id: z.number(),
+  node_id: z.string(),
+  name: z.string(),
+  full_name: z.string(),
+  private: z.boolean(),
+  owner: GitHubOwnerSchema,
+  html_url: z.string(),
+  description: z.string().nullable(),
+  fork: z.boolean(),
+  url: z.string(),
+  created_at: z.string(),
+  updated_at: z.string(),
+  pushed_at: z.string(),
+  git_url: z.string(),
+  ssh_url: z.string(),
+  clone_url: z.string(),
+  default_branch: z.string(),
+});
+
+export const GithubFileContentLinks = z.object({
+  self: z.string(),
+  git: z.string().nullable(),
+  html: z.string().nullable()
+});
+
+export const GitHubFileContentSchema = z.object({
+  name: z.string(),
+  path: z.string(),
+  sha: z.string(),
+  size: z.number(),
+  url: z.string(),
+  html_url: z.string(),
+  git_url: z.string(),
+  download_url: z.string(),
+  type: z.string(),
+  content: z.string().optional(),
+  encoding: z.string().optional(),
+  _links: GithubFileContentLinks
+});
+
+export const GitHubDirectoryContentSchema = z.object({
+  type: z.string(),
+  size: z.number(),
+  name: z.string(),
+  path: z.string(),
+  sha: z.string(),
+  url: z.string(),
+  git_url: z.string(),
+  html_url: z.string(),
+  download_url: z.string().nullable(),
+});
+
+export const GitHubContentSchema = z.union([
+  GitHubFileContentSchema,
+  z.array(GitHubDirectoryContentSchema),
+]);
+
+export const GitHubTreeEntrySchema = z.object({
+  path: z.string(),
+  mode: z.enum(["100644", "100755", "040000", "160000", "120000"]),
+  type: z.enum(["blob", "tree", "commit"]),
+  size: z.number().optional(),
+  sha: z.string(),
+  url: z.string(),
+});
+
+export const GitHubTreeSchema = z.object({
+  sha: z.string(),
+  url: z.string(),
+  tree: z.array(GitHubTreeEntrySchema),
+  truncated: z.boolean(),
+});
+
+export const GitHubCommitSchema = z.object({
+  sha: z.string(),
+  node_id: z.string(),
+  url: z.string(),
+  author: GitHubAuthorSchema,
+  committer: GitHubAuthorSchema,
+  message: z.string(),
+  tree: z.object({
+    sha: z.string(),
+    url: z.string(),
+  }),
+  parents: z.array(
+    z.object({
+      sha: z.string(),
+      url: z.string(),
+    })
+  ),
+});
+
+export const GitHubReferenceSchema = z.object({
+  ref: z.string(),
+  node_id: z.string(),
+  url: z.string(),
+  object: z.object({
+    sha: z.string(),
+    type: z.string(),
+    url: z.string(),
+  }),
+});
+
+// Export types
+export type GitHubAuthor = z.infer<typeof GitHubAuthorSchema>;
+export type GitHubRepository = z.infer<typeof GitHubRepositorySchema>;
+export type GitHubFileContent = z.infer<typeof GitHubFileContentSchema>;
+export type GitHubDirectoryContent = z.infer<typeof GitHubDirectoryContentSchema>;
+export type GitHubContent = z.infer<typeof GitHubContentSchema>;
+export type GitHubTree = z.infer<typeof GitHubTreeSchema>;
+export type GitHubCommit = z.infer<typeof GitHubCommitSchema>;
+export type GitHubReference = z.infer<typeof GitHubReferenceSchema>;
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