diff --git a/package.json b/package.json
index 6ea757a..17f3fcc 100644
--- a/package.json
+++ b/package.json
@@ -220,6 +220,7 @@
     "docs:preview": "cd docs && bun run preview",
     "widget:build": "cd widget && bun run build.js",
     "widget:publish": "cd widget && cd src && sudo npm publish --access public",
-    "server:publish": "cd server && sudo npm publish --access public"
+    "server:publish": "cd server && sudo npm publish --access public",
+    "cli:publish": "cd solver-cli && sudo npm publish --access public"
   }
 }
diff --git a/solver-cli/.gitignore b/solver-cli/.gitignore
new file mode 100644
index 0000000..a14702c
--- /dev/null
+++ b/solver-cli/.gitignore
@@ -0,0 +1,34 @@
+# dependencies (bun install)
+node_modules
+
+# output
+out
+dist
+*.tgz
+
+# code coverage
+coverage
+*.lcov
+
+# logs
+logs
+_.log
+report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
+
+# dotenv environment variable files
+.env
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
+
+# caches
+.eslintcache
+.cache
+*.tsbuildinfo
+
+# IntelliJ based IDEs
+.idea
+
+# Finder (MacOS) folder config
+.DS_Store
diff --git a/solver-cli/README.md b/solver-cli/README.md
new file mode 100644
index 0000000..65bbec4
--- /dev/null
+++ b/solver-cli/README.md
@@ -0,0 +1,15 @@
+# solver-cli
+
+To install dependencies:
+
+```bash
+bun install
+```
+
+To run:
+
+```bash
+bun run index.js
+```
+
+This project was created using `bun init` in bun v1.2.10. [Bun](https://bun.sh) is a fast all-in-one JavaScript runtime.
diff --git a/solver-cli/bun.lock b/solver-cli/bun.lock
new file mode 100644
index 0000000..519337a
--- /dev/null
+++ b/solver-cli/bun.lock
@@ -0,0 +1,30 @@
+{
+  "lockfileVersion": 1,
+  "workspaces": {
+    "": {
+      "name": "solver-cli",
+      "dependencies": {
+        "@cap.js/solver": "^0.0.3",
+      },
+      "devDependencies": {
+        "@types/bun": "latest",
+      },
+      "peerDependencies": {
+        "typescript": "^5",
+      },
+    },
+  },
+  "packages": {
+    "@cap.js/solver": ["@cap.js/solver@0.0.3", "", {}, "sha512-J/Vso8LllJGBmVuj68mXalSsOg8a+Ry0/lnOYu63srk37UFlbQVWdcm63hARnEdOduR33DWS0Ot/yGHPliJhqw=="],
+
+    "@types/bun": ["@types/bun@1.2.10", "", { "dependencies": { "bun-types": "1.2.10" } }, "sha512-eilv6WFM3M0c9ztJt7/g80BDusK98z/FrFwseZgT4bXCq2vPhXD4z8R3oddmAn+R/Nmz9vBn4kweJKmGTZj+lg=="],
+
+    "@types/node": ["@types/node@22.14.1", "", { "dependencies": { "undici-types": "~6.21.0" } }, "sha512-u0HuPQwe/dHrItgHHpmw3N2fYCR6x4ivMNbPHRkBVP4CvN+kiRrKHWk3i8tXiO/joPwXLMYvF9TTF0eqgHIuOw=="],
+
+    "bun-types": ["bun-types@1.2.10", "", { "dependencies": { "@types/node": "*" } }, "sha512-b5ITZMnVdf3m1gMvJHG+gIfeJHiQPJak0f7925Hxu6ZN5VKA8AGy4GZ4lM+Xkn6jtWxg5S3ldWvfmXdvnkp3GQ=="],
+
+    "typescript": ["typescript@5.8.3", "", { "bin": { "tsc": "bin/tsc", "tsserver": "bin/tsserver" } }, "sha512-p1diW6TqL9L07nNxvRMM7hMMw4c5XOo/1ibL4aAIGmSAt9slTE1Xgw5KWuof2uTOvCg9BY7ZRi+GaF+7sfgPeQ=="],
+
+    "undici-types": ["undici-types@6.21.0", "", {}, "sha512-iwDZqg0QAGrg9Rav5H4n0M64c3mkR59cJ6wQp+7C4nI0gsmExaedaYLNO44eT4AtBBwjbTiGPMlt2Md0T9H9JQ=="],
+  }
+}
diff --git a/solver-cli/index.js b/solver-cli/index.js
new file mode 100644
index 0000000..a39b6d5
--- /dev/null
+++ b/solver-cli/index.js
@@ -0,0 +1,51 @@
+#!/usr/bin/env bun
+
+import solver from "@cap.js/solver";
+import kleur from "kleur";
+
+const args = process.argv.slice(2);
+
+(async () => {
+  if (args.length === 0) {
+    console.log(`\n${kleur.cyan("@cap.js/cli")} ${kleur.gray(
+      "cli solver for cap challenges"
+    )}
+
+Usage:
+  ${kleur.dim("$")} bunx ${kleur.bold("@cap.js/cli")} <challenges>
+
+Options:
+  <challenges>  The challenges to solve in
+                format \`salt:target\``);
+    return;
+  }
+
+  const challenges = args.map((arg) => {
+    const [salt, target] = arg.split(":");
+
+    if (!salt || !target) {
+      console.error(
+        `${kleur.red("Error:")} ${kleur.yellow(arg)} is not a valid challenge`
+      );
+      process.exit(1);
+    }
+
+    return [salt, target];
+  });
+
+  console.log(`\n${kleur.cyan("@cap.js/cli")} ${kleur.dim(`${challenges.length} challenges`)}\n\n\n`);
+
+  const solutions = await solver(challenges, {
+    onProgress: (status) => {
+      process.stdout.moveCursor(0, -2);
+      process.stdout.clearScreenDown();
+      console.log(
+        `${status.result.salt}:${status.result.target}:${status.result.nonce}`
+      );
+      console.log(kleur.dim("\nSolving challenges… " + status.progress + "%"));
+    },
+  });
+
+  process.stdout.moveCursor(0, -2);
+  process.stdout.clearScreenDown();
+})();
\ No newline at end of file
diff --git a/solver-cli/package.json b/solver-cli/package.json
new file mode 100644
index 0000000..52525bd
--- /dev/null
+++ b/solver-cli/package.json
@@ -0,0 +1,18 @@
+{
+  "name": "@cap.js/cli",
+  "module": "index.js",
+  "type": "module",
+  "private": false,
+  "devDependencies": {
+    "@types/bun": "latest"
+  },
+  "peerDependencies": {
+    "typescript": "^5"
+  },
+  "dependencies": {
+    "@cap.js/solver": "^0.0.3"
+  },
+  "bin": {
+    "cli": "./index.js"
+  }
+}
diff --git a/solver/example.js b/solver/example.js
index c6f707b..a6326d2 100644
--- a/solver/example.js
+++ b/solver/example.js
@@ -21,4 +21,15 @@ const CHALLENGES = [
   ["0c21ade6e63a4e37b13cb8b087f31863", "65c9"],
 ];
 
-console.log(await solver(CHALLENGES));
+const solutions = await solver(CHALLENGES, {
+  onProgress: (status) => {
+    process.stdout.moveCursor(0, -1);
+    process.stdout.clearScreenDown();
+    console.log(`Progress: ${status.progress}%`);
+  },
+});
+
+process.stdout.moveCursor(0, -1);
+process.stdout.clearScreenDown();
+
+console.log("Solutions:", solutions);
\ No newline at end of file
diff --git a/solver/index.js b/solver/index.js
index 7d8f160..7af072c 100644
--- a/solver/index.js
+++ b/solver/index.js
@@ -72,6 +72,15 @@ export default function solver(challenges, config) {
           challengesProcessed++;
           activeWorkers--;
 
+          if (config?.onProgress) {
+            config.onProgress({
+              progress: Math.floor((challengesProcessed / totalChallenges) * 100),
+              currentChallenge: currentChallengeIndex,
+              challengesProcessed,
+              result,
+            });
+          }
+
           if (challengesProcessed === totalChallenges) {
             resolve(results);
           } else {
diff --git a/solver/package.json b/solver/package.json
index 55a3ff5..a6560d1 100644
--- a/solver/package.json
+++ b/solver/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@cap.js/solver",
-  "version": "0.0.2",
+  "version": "0.0.3",
   "description": "Server-side solver for Cap's SHA-256 PoW captchas. Cap is a lightweight, modern open-source CAPTCHA alternative designed using SHA-256 PoW.",
   "main": "index.js",
   "scripts": {