diff --git a/action.yml b/action.yml
new file mode 100644
index 0000000..252163a
--- /dev/null
+++ b/action.yml
@@ -0,0 +1,12 @@
+name: 'OpenCommit GitHub Action'
+description: 'Checks commit messages and replaces "oc" with a smart AI generated message'
+author: 'https://github.com/di-sukharev'
+
+inputs:
+  token:
+    description: 'GitHub token'
+    required: true
+
+runs:
+  using: 'node12'
+  main: 'dist/github-action.js'
diff --git a/package-lock.json b/package-lock.json
index 0158e7f..2e831c3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,6 +9,8 @@
       "version": "2.0.15",
       "license": "MIT",
       "dependencies": {
+        "@actions/core": "^1.10.0",
+        "@actions/github": "^5.1.1",
         "@clack/prompts": "^0.6.1",
         "@dqbd/tiktoken": "^1.0.2",
         "axios": "^1.3.4",
@@ -39,6 +41,34 @@
         "typescript": "^4.9.3"
       }
     },
+    "node_modules/@actions/core": {
+      "version": "1.10.0",
+      "resolved": "https://registry.npmjs.org/@actions/core/-/core-1.10.0.tgz",
+      "integrity": "sha512-2aZDDa3zrrZbP5ZYg159sNoLRb61nQ7awl5pSvIq5Qpj81vwDzdMRKzkWJGJuwVvWpvZKx7vspJALyvaaIQyug==",
+      "dependencies": {
+        "@actions/http-client": "^2.0.1",
+        "uuid": "^8.3.2"
+      }
+    },
+    "node_modules/@actions/github": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/@actions/github/-/github-5.1.1.tgz",
+      "integrity": "sha512-Nk59rMDoJaV+mHCOJPXuvB1zIbomlKS0dmSIqPGxd0enAXBnOfn4VWF+CGtRCwXZG9Epa54tZA7VIRlJDS8A6g==",
+      "dependencies": {
+        "@actions/http-client": "^2.0.1",
+        "@octokit/core": "^3.6.0",
+        "@octokit/plugin-paginate-rest": "^2.17.0",
+        "@octokit/plugin-rest-endpoint-methods": "^5.13.0"
+      }
+    },
+    "node_modules/@actions/http-client": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@actions/http-client/-/http-client-2.1.0.tgz",
+      "integrity": "sha512-BonhODnXr3amchh4qkmjPMUO8mFi/zLaaCeCAJZqch8iQqyDnVIkySjB38VHAC8IJ+bnlgfOqlhpyCUZHlQsqw==",
+      "dependencies": {
+        "tunnel": "^0.0.6"
+      }
+    },
     "node_modules/@clack/core": {
       "version": "0.3.2",
       "resolved": "https://registry.npmjs.org/@clack/core/-/core-0.3.2.tgz",
@@ -247,6 +277,107 @@
         "node": ">= 8"
       }
     },
+    "node_modules/@octokit/auth-token": {
+      "version": "2.5.0",
+      "resolved": "https://registry.npmjs.org/@octokit/auth-token/-/auth-token-2.5.0.tgz",
+      "integrity": "sha512-r5FVUJCOLl19AxiuZD2VRZ/ORjp/4IN98Of6YJoJOkY75CIBuYfmiNHGrDwXr+aLGG55igl9QrxX3hbiXlLb+g==",
+      "dependencies": {
+        "@octokit/types": "^6.0.3"
+      }
+    },
+    "node_modules/@octokit/core": {
+      "version": "3.6.0",
+      "resolved": "https://registry.npmjs.org/@octokit/core/-/core-3.6.0.tgz",
+      "integrity": "sha512-7RKRKuA4xTjMhY+eG3jthb3hlZCsOwg3rztWh75Xc+ShDWOfDDATWbeZpAHBNRpm4Tv9WgBMOy1zEJYXG6NJ7Q==",
+      "dependencies": {
+        "@octokit/auth-token": "^2.4.4",
+        "@octokit/graphql": "^4.5.8",
+        "@octokit/request": "^5.6.3",
+        "@octokit/request-error": "^2.0.5",
+        "@octokit/types": "^6.0.3",
+        "before-after-hook": "^2.2.0",
+        "universal-user-agent": "^6.0.0"
+      }
+    },
+    "node_modules/@octokit/endpoint": {
+      "version": "6.0.12",
+      "resolved": "https://registry.npmjs.org/@octokit/endpoint/-/endpoint-6.0.12.tgz",
+      "integrity": "sha512-lF3puPwkQWGfkMClXb4k/eUT/nZKQfxinRWJrdZaJO85Dqwo/G0yOC434Jr2ojwafWJMYqFGFa5ms4jJUgujdA==",
+      "dependencies": {
+        "@octokit/types": "^6.0.3",
+        "is-plain-object": "^5.0.0",
+        "universal-user-agent": "^6.0.0"
+      }
+    },
+    "node_modules/@octokit/graphql": {
+      "version": "4.8.0",
+      "resolved": "https://registry.npmjs.org/@octokit/graphql/-/graphql-4.8.0.tgz",
+      "integrity": "sha512-0gv+qLSBLKF0z8TKaSKTsS39scVKF9dbMxJpj3U0vC7wjNWFuIpL/z76Qe2fiuCbDRcJSavkXsVtMS6/dtQQsg==",
+      "dependencies": {
+        "@octokit/request": "^5.6.0",
+        "@octokit/types": "^6.0.3",
+        "universal-user-agent": "^6.0.0"
+      }
+    },
+    "node_modules/@octokit/openapi-types": {
+      "version": "12.11.0",
+      "resolved": "https://registry.npmjs.org/@octokit/openapi-types/-/openapi-types-12.11.0.tgz",
+      "integrity": "sha512-VsXyi8peyRq9PqIz/tpqiL2w3w80OgVMwBHltTml3LmVvXiphgeqmY9mvBw9Wu7e0QWk/fqD37ux8yP5uVekyQ=="
+    },
+    "node_modules/@octokit/plugin-paginate-rest": {
+      "version": "2.21.3",
+      "resolved": "https://registry.npmjs.org/@octokit/plugin-paginate-rest/-/plugin-paginate-rest-2.21.3.tgz",
+      "integrity": "sha512-aCZTEf0y2h3OLbrgKkrfFdjRL6eSOo8komneVQJnYecAxIej7Bafor2xhuDJOIFau4pk0i/P28/XgtbyPF0ZHw==",
+      "dependencies": {
+        "@octokit/types": "^6.40.0"
+      },
+      "peerDependencies": {
+        "@octokit/core": ">=2"
+      }
+    },
+    "node_modules/@octokit/plugin-rest-endpoint-methods": {
+      "version": "5.16.2",
+      "resolved": "https://registry.npmjs.org/@octokit/plugin-rest-endpoint-methods/-/plugin-rest-endpoint-methods-5.16.2.tgz",
+      "integrity": "sha512-8QFz29Fg5jDuTPXVtey05BLm7OB+M8fnvE64RNegzX7U+5NUXcOcnpTIK0YfSHBg8gYd0oxIq3IZTe9SfPZiRw==",
+      "dependencies": {
+        "@octokit/types": "^6.39.0",
+        "deprecation": "^2.3.1"
+      },
+      "peerDependencies": {
+        "@octokit/core": ">=3"
+      }
+    },
+    "node_modules/@octokit/request": {
+      "version": "5.6.3",
+      "resolved": "https://registry.npmjs.org/@octokit/request/-/request-5.6.3.tgz",
+      "integrity": "sha512-bFJl0I1KVc9jYTe9tdGGpAMPy32dLBXXo1dS/YwSCTL/2nd9XeHsY616RE3HPXDVk+a+dBuzyz5YdlXwcDTr2A==",
+      "dependencies": {
+        "@octokit/endpoint": "^6.0.1",
+        "@octokit/request-error": "^2.1.0",
+        "@octokit/types": "^6.16.1",
+        "is-plain-object": "^5.0.0",
+        "node-fetch": "^2.6.7",
+        "universal-user-agent": "^6.0.0"
+      }
+    },
+    "node_modules/@octokit/request-error": {
+      "version": "2.1.0",
+      "resolved": "https://registry.npmjs.org/@octokit/request-error/-/request-error-2.1.0.tgz",
+      "integrity": "sha512-1VIvgXxs9WHSjicsRwq8PlR2LR2x6DwsJAaFgzdi0JfJoGSO8mYI/cHJQ+9FbN21aa+DrgNLnwObmyeSC8Rmpg==",
+      "dependencies": {
+        "@octokit/types": "^6.0.3",
+        "deprecation": "^2.0.0",
+        "once": "^1.4.0"
+      }
+    },
+    "node_modules/@octokit/types": {
+      "version": "6.41.0",
+      "resolved": "https://registry.npmjs.org/@octokit/types/-/types-6.41.0.tgz",
+      "integrity": "sha512-eJ2jbzjdijiL3B4PrSQaSjuF2sPEQPVCPzBvTHJD9Nz+9dw2SGH4K4xeQJ77YfTq5bRQ+bD8wT11JbeDPmxmGg==",
+      "dependencies": {
+        "@octokit/openapi-types": "^12.11.0"
+      }
+    },
     "node_modules/@tsconfig/node10": {
       "version": "1.0.9",
       "resolved": "https://registry.npmjs.org/@tsconfig/node10/-/node10-1.0.9.tgz",
@@ -654,6 +785,11 @@
         }
       ]
     },
+    "node_modules/before-after-hook": {
+      "version": "2.2.3",
+      "resolved": "https://registry.npmjs.org/before-after-hook/-/before-after-hook-2.2.3.tgz",
+      "integrity": "sha512-NzUnlZexiaH/46WDhANlyR2bXRopNg4F/zuSA3OpZnllCUgRaOF2znDioDWrmbNVsuZk6l9pMquQB38cfBZwkQ=="
+    },
     "node_modules/bl": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/bl/-/bl-5.1.0.tgz",
@@ -883,6 +1019,11 @@
         "node": ">=0.4.0"
       }
     },
+    "node_modules/deprecation": {
+      "version": "2.3.1",
+      "resolved": "https://registry.npmjs.org/deprecation/-/deprecation-2.3.1.tgz",
+      "integrity": "sha512-xmHIy4F3scKVwMsQ4WnVaS8bHOx0DmVwRywosKhaILI0ywMDWPtBSku2HNxRvF7jtwDRsoEwYQSfbxj8b7RlJQ=="
+    },
     "node_modules/diff": {
       "version": "4.0.2",
       "resolved": "https://registry.npmjs.org/diff/-/diff-4.0.2.tgz",
@@ -2040,6 +2181,14 @@
         "node": ">=8"
       }
     },
+    "node_modules/is-plain-object": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/is-plain-object/-/is-plain-object-5.0.0.tgz",
+      "integrity": "sha512-VRSzKkbMm5jMDoKLbltAkFQ5Qr7VDiTFGXxYFXXowVj387GeGNOCsOH6Msy00SGZ3Fp84b1Naa1psqgcCIEP5Q==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/is-stream": {
       "version": "3.0.0",
       "resolved": "https://registry.npmjs.org/is-stream/-/is-stream-3.0.0.tgz",
@@ -2265,6 +2414,25 @@
       "integrity": "sha512-Tj+HTDSJJKaZnfiuw+iaF9skdPpTo2GtEly5JHnWV/hfv2Qj/9RKsGISQtLh2ox3l5EAGw487hnBee0sIJ6v2g==",
       "dev": true
     },
+    "node_modules/node-fetch": {
+      "version": "2.6.10",
+      "resolved": "https://registry.npmjs.org/node-fetch/-/node-fetch-2.6.10.tgz",
+      "integrity": "sha512-5YytjUVbwzjE/BX4N62vnPPkGNxlJPwdA9/ArUc4pcM6cYS4Hinuv4VazzwjMGgnWuiQqcemOanib/5PpcsGug==",
+      "dependencies": {
+        "whatwg-url": "^5.0.0"
+      },
+      "engines": {
+        "node": "4.x || >=6.0.0"
+      },
+      "peerDependencies": {
+        "encoding": "^0.1.0"
+      },
+      "peerDependenciesMeta": {
+        "encoding": {
+          "optional": true
+        }
+      }
+    },
     "node_modules/npm-run-path": {
       "version": "5.1.0",
       "resolved": "https://registry.npmjs.org/npm-run-path/-/npm-run-path-5.1.0.tgz",
@@ -2294,7 +2462,6 @@
       "version": "1.4.0",
       "resolved": "https://registry.npmjs.org/once/-/once-1.4.0.tgz",
       "integrity": "sha512-lNaJgI+2Q5URQBkccEKHTQOPaXdUxnZZElQTZY0MFUAuaEqe1E+Nyvgdz/aIyNi6Z9MzO5dv1H8n58/GELp3+w==",
-      "dev": true,
       "dependencies": {
         "wrappy": "1"
       }
@@ -2904,6 +3071,11 @@
         "node": ">=8.0"
       }
     },
+    "node_modules/tr46": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/tr46/-/tr46-0.0.3.tgz",
+      "integrity": "sha512-N3WMsuqV66lT30CrXNbEjx4GEwlow3v6rr4mCcv6prnfwhS01rkgyFdjPNBYd9br7LpXV1+Emh01fHnq2Gdgrw=="
+    },
     "node_modules/ts-node": {
       "version": "10.9.1",
       "resolved": "https://registry.npmjs.org/ts-node/-/ts-node-10.9.1.tgz",
@@ -2973,6 +3145,14 @@
       "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg==",
       "dev": true
     },
+    "node_modules/tunnel": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/tunnel/-/tunnel-0.0.6.tgz",
+      "integrity": "sha512-1h/Lnq9yajKY2PEbBadPXj3VxsDDu844OnaAo52UVmIzIvwwtBPIuNvkjuzBlTWpfJyUbG3ez0KSBibQkj4ojg==",
+      "engines": {
+        "node": ">=0.6.11 <=0.7.0 || >=0.7.3"
+      }
+    },
     "node_modules/type-check": {
       "version": "0.4.0",
       "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.4.0.tgz",
@@ -3018,6 +3198,11 @@
         "node": ">=4.2.0"
       }
     },
+    "node_modules/universal-user-agent": {
+      "version": "6.0.0",
+      "resolved": "https://registry.npmjs.org/universal-user-agent/-/universal-user-agent-6.0.0.tgz",
+      "integrity": "sha512-isyNax3wXoKaulPDZWHQqbmIx1k2tb9fb3GGDBRxCscfYV2Ch7WxPArBsFEG8s/safwXTT7H4QGhaIkTp9447w=="
+    },
     "node_modules/uri-js": {
       "version": "4.4.1",
       "resolved": "https://registry.npmjs.org/uri-js/-/uri-js-4.4.1.tgz",
@@ -3032,6 +3217,14 @@
       "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
       "integrity": "sha512-EPD5q1uXyFxJpCrLnCc1nHnq3gOa6DZBocAIiI2TaSCA7VCJ1UJDMagCzIkXNsUYfD1daK//LTEQ8xiIbrHtcw=="
     },
+    "node_modules/uuid": {
+      "version": "8.3.2",
+      "resolved": "https://registry.npmjs.org/uuid/-/uuid-8.3.2.tgz",
+      "integrity": "sha512-+NYs2QeMWy+GWFOEm9xnn6HCDp0l7QBD7ml8zLUmJ+93Q5NF0NocErnwkTkXVFNiX3/fpC6afS8Dhb/gz7R7eg==",
+      "bin": {
+        "uuid": "dist/bin/uuid"
+      }
+    },
     "node_modules/v8-compile-cache-lib": {
       "version": "3.0.1",
       "resolved": "https://registry.npmjs.org/v8-compile-cache-lib/-/v8-compile-cache-lib-3.0.1.tgz",
@@ -3046,6 +3239,20 @@
         "defaults": "^1.0.3"
       }
     },
+    "node_modules/webidl-conversions": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/webidl-conversions/-/webidl-conversions-3.0.1.tgz",
+      "integrity": "sha512-2JAn3z8AR6rjK8Sm8orRC0h/bcl/DqL7tRPdGZ4I1CjdF+EaMLmYxBHyXuKL849eucPFhvBoxMsflfOb8kxaeQ=="
+    },
+    "node_modules/whatwg-url": {
+      "version": "5.0.0",
+      "resolved": "https://registry.npmjs.org/whatwg-url/-/whatwg-url-5.0.0.tgz",
+      "integrity": "sha512-saE57nupxk6v3HY35+jzBwYa0rKSy0XR8JSxZPwgLr7ys0IBzhGviA1/TUGJLmSVqs8pb9AnvICXEuOHLprYTw==",
+      "dependencies": {
+        "tr46": "~0.0.3",
+        "webidl-conversions": "^3.0.0"
+      }
+    },
     "node_modules/which": {
       "version": "2.0.2",
       "resolved": "https://registry.npmjs.org/which/-/which-2.0.2.tgz",
@@ -3113,8 +3320,7 @@
     "node_modules/wrappy": {
       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
-      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ==",
-      "dev": true
+      "integrity": "sha512-l4Sp/DRseor9wL6EvV2+TuQn63dMkPjZ/sp9XkghTEbV9KlPS1xUsZ3u7/IQO4wxtcFB4bgpQPRcR3QCvezPcQ=="
     },
     "node_modules/yallist": {
       "version": "4.0.0",
diff --git a/package.json b/package.json
index e7a2812..fbf646f 100644
--- a/package.json
+++ b/package.json
@@ -60,6 +60,8 @@
     "typescript": "^4.9.3"
   },
   "dependencies": {
+    "@actions/core": "^1.10.0",
+    "@actions/github": "^5.1.1",
     "@clack/prompts": "^0.6.1",
     "@dqbd/tiktoken": "^1.0.2",
     "axios": "^1.3.4",
diff --git a/src/github-action.ts b/src/github-action.ts
new file mode 100644
index 0000000..4f1e4f8
--- /dev/null
+++ b/src/github-action.ts
@@ -0,0 +1,72 @@
+import * as child_process from 'child_process';
+import * as core from '@actions/core';
+import * as github from '@actions/github';
+
+// TODO: add all OpenCommit configs
+
+// TODO: replace with execa package
+function execShellCommand(cmd: string) {
+  return new Promise<string>((resolve, reject) => {
+    child_process.exec(
+      cmd,
+      (
+        error: child_process.ExecException | null,
+        stdout: string,
+        stderr: string
+      ) => {
+        if (error) {
+          reject(stderr);
+        } else {
+          resolve(stdout);
+        }
+      }
+    );
+  });
+}
+
+async function run() {
+  try {
+    const token = core.getInput('token');
+    const octokit = github.getOctokit(token);
+
+    const context = github.context;
+    const owner = context.repo.owner;
+    const repo = context.repo.repo;
+
+    const commits = await octokit.rest.repos.get({
+      owner: owner,
+      repo: repo
+    });
+
+    let shasToReword = '';
+
+    // TODO: fix the error
+    for (const commit of commits) {
+      if (commit.commit.message.includes('oc')) {
+        shasToReword += `${commit.sha} `;
+      }
+    }
+
+    if (shasToReword) {
+      // Start an interactive rebase
+      await execShellCommand(`git rebase -i ${shasToReword.trim()}`);
+
+      // For each commit to be modified, change the message
+      for (const sha of shasToReword.split(' ')) {
+        // TODO: call openAI
+        const improvedMessage = 'TODO';
+        await execShellCommand(
+          `git commit --amend -m "$${improvedMessage}" && git rebase --continue`
+        );
+      }
+
+      // Force push the rebased commits
+      await execShellCommand(`git push origin +${context.ref}`);
+    }
+  } catch (error: any) {
+    // TODO: fix any after test
+    core.setFailed(error!.message || error);
+  }
+}
+
+run();