diff --git a/src/cli/program.ts b/src/cli/program.ts
index 6c5c605..e061fda 100644
--- a/src/cli/program.ts
+++ b/src/cli/program.ts
@@ -4,6 +4,7 @@ import { registerCheckCommand } from '../commands/check.js';
 import { registerFollowCommands } from '../commands/follow.js';
 import { registerHelpCommand } from '../commands/help.js';
 import { registerHomeCommand } from '../commands/home.js';
+import { registerLikeCommands } from '../commands/like.js';
 import { registerListsCommand } from '../commands/lists.js';
 import { registerNewsCommand } from '../commands/news.js';
 import { registerPostCommands } from '../commands/post.js';
@@ -31,8 +32,10 @@ export const KNOWN_COMMANDS = new Set([
   'unfollow',
   'following',
   'followers',
+  'like',
   'likes',
   'lists',
+  'unlike',
   'list-timeline',
   'home',
   'user-tweets',
@@ -146,6 +149,7 @@ export function createProgram(ctx: CliContext): Command {
   registerBookmarksCommand(program, ctx);
   registerUnbookmarkCommand(program, ctx);
   registerFollowCommands(program, ctx);
+  registerLikeCommands(program, ctx);
   registerListsCommand(program, ctx);
   registerHomeCommand(program, ctx);
   registerUserCommands(program, ctx);
diff --git a/src/commands/like.ts b/src/commands/like.ts
new file mode 100644
index 0000000..01ee11a
--- /dev/null
+++ b/src/commands/like.ts
@@ -0,0 +1,81 @@
+import type { Command } from 'commander';
+import type { CliContext } from '../cli/shared.js';
+import { TwitterClient } from '../lib/twitter-client.js';
+
+export function registerLikeCommands(program: Command, ctx: CliContext): void {
+  program
+    .command('like')
+    .description('Like tweets')
+    .argument('<tweet-id-or-url...>', 'Tweet IDs or URLs to like')
+    .action(async (tweetIdOrUrls: string[]) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs });
+      let failures = 0;
+
+      for (const input of tweetIdOrUrls) {
+        const tweetId = ctx.extractTweetId(input);
+        const result = await client.like(tweetId);
+        if (result.success) {
+          console.log(`${ctx.p('ok')}Liked tweet ${tweetId}`);
+        } else {
+          failures += 1;
+          console.error(`${ctx.p('err')}Failed to like tweet ${tweetId}: ${result.error}`);
+        }
+      }
+
+      if (failures > 0) {
+        process.exit(1);
+      }
+    });
+
+  program
+    .command('unlike')
+    .description('Unlike tweets')
+    .argument('<tweet-id-or-url...>', 'Tweet IDs or URLs to unlike')
+    .action(async (tweetIdOrUrls: string[]) => {
+      const opts = program.opts();
+      const timeoutMs = ctx.resolveTimeoutFromOptions(opts);
+
+      const { cookies, warnings } = await ctx.resolveCredentialsFromOptions(opts);
+
+      for (const warning of warnings) {
+        console.error(`${ctx.p('warn')}${warning}`);
+      }
+
+      if (!cookies.authToken || !cookies.ct0) {
+        console.error(`${ctx.p('err')}Missing required credentials`);
+        process.exit(1);
+      }
+
+      const client = new TwitterClient({ cookies, timeoutMs });
+      let failures = 0;
+
+      for (const input of tweetIdOrUrls) {
+        const tweetId = ctx.extractTweetId(input);
+        const result = await client.unlike(tweetId);
+        if (result.success) {
+          console.log(`${ctx.p('ok')}Unliked tweet ${tweetId}`);
+        } else {
+          failures += 1;
+          console.error(`${ctx.p('err')}Failed to unlike tweet ${tweetId}: ${result.error}`);
+        }
+      }
+
+      if (failures > 0) {
+        process.exit(1);
+      }
+    });
+}