diff --git a/.github/workflows/primer_run_main.yaml b/.github/workflows/primer_run_main.yaml
index 22a7976d10..b587bce0fb 100644
--- a/.github/workflows/primer_run_main.yaml
+++ b/.github/workflows/primer_run_main.yaml
@@ -82,3 +82,15 @@ jobs:
         with:
           name: primer_commitstring
           path: .pylint_primer_tests/commit_string.txt
+
+      # Run primer
+      - name: Run pylint primer
+        run: |
+          . venv/bin/activate
+          pip install -e .
+          python tests/primer/primer_tool.py run --type=main
+      - name: Upload output
+        uses: actions/upload-artifact@v3
+        with:
+          name: primer_output
+          path: .pylint_primer_tests/output_main.txt
diff --git a/.github/workflows/primer_run_pr.yaml b/.github/workflows/primer_run_pr.yaml
index 7b426d5c73..642b34f347 100644
--- a/.github/workflows/primer_run_pr.yaml
+++ b/.github/workflows/primer_run_pr.yaml
@@ -26,14 +26,16 @@ jobs:
     steps:
       - name: Check out code from GitHub
         uses: actions/checkout@v3.0.2
+        with:
+          fetch-depth: 0
       - name: Set up Python ${{ matrix.python-version }}
         id: python
         uses: actions/setup-python@v3.1.2
         with:
           python-version: ${{ matrix.python-version }}
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v3
         with:
-          version: 12
+          node-version: 16
       - run: npm install @octokit/rest
 
       # Restore cached Python environment
@@ -62,7 +64,8 @@ jobs:
           pip install -U -r requirements_test.txt
 
       # Cache primer packages
-      - name: Download diffs
+      - name: Download last 'main' run info
+        id: download-main-run
         uses: actions/github-script@v6
         with:
           script: |
@@ -86,6 +89,8 @@ jobs:
                repo: context.repo.repo,
                run_id: lastRunMain.id,
             });
+
+            // Get commitstring
             const [matchArtifactMain] = artifacts_main.data.artifacts.filter((artifact) =>
               artifact.name == "primer_commitstring");
             const downloadWorkflow = await github.rest.actions.downloadArtifact({
@@ -95,10 +100,24 @@ jobs:
                archive_format: "zip",
             });
             fs.writeFileSync("primer_commitstring.zip", Buffer.from(downloadWorkflow.data));
+
+            // Get output
+            const [matchArtifactMainOutput] = artifacts_main.data.artifacts.filter((artifact) =>
+              artifact.name == "primer_output");
+            const downloadWorkflowTwo = await github.rest.actions.downloadArtifact({
+               owner: context.repo.owner,
+               repo: context.repo.repo,
+               artifact_id: matchArtifactMainOutput.id,
+               archive_format: "zip",
+            });
+            fs.writeFileSync("primer_output_main.zip", Buffer.from(downloadWorkflowTwo.data));
+            return lastRunMain.head_sha;
       - name: Copy and unzip the commit string
         run: |
           unzip primer_commitstring.zip
           cp commit_string.txt .pylint_primer_tests/commit_string.txt
+      - name: Unzip the output of 'main'
+        run: unzip primer_output_main.zip
       - name: Get commit string
         id: commitstring
         run: |
@@ -118,11 +137,37 @@ jobs:
           . venv/bin/activate
           python tests/primer/primer_tool.py prepare --check
 
+      # Merge the 'main' commit of last successful run
+      - name: Pull 'main'
+        shell: bash
+        run: |
+          git config --global user.email "primer@example.com"
+          git config --global user.name "Pylint Primer"
+          git pull origin ${{ steps.download-main-run.outputs.result }} --no-edit --no-commit --no-rebase
+
+      # Run primer
+      - name: Run pylint primer
+        run: |
+          . venv/bin/activate
+          pip install -e .
+          python tests/primer/primer_tool.py run --type=pr
+      - name: Upload output of PR
+        uses: actions/upload-artifact@v3
+        with:
+          name: primer_output_pr
+          path: .pylint_primer_tests/output_pr.txt
+      - name: Upload output of 'main'
+        uses: actions/upload-artifact@v3
+        with:
+          name: primer_output_main
+          path: output_main.txt
+
+      # Save PR number so we know which PR to comment on
       - name: Save PR number
         run: |
           echo ${{ github.event.pull_request.number }} | tee pr_number.txt
       - name: Upload PR number
-        uses: actions/upload-artifact@v2
+        uses: actions/upload-artifact@v3
         with:
           name: primer_pylint_output_workflow
           path: pr_number.txt
diff --git a/tests/primer/packages_to_prime.json b/tests/primer/packages_to_prime.json
index 8051845cd4..a384598fc0 100644
--- a/tests/primer/packages_to_prime.json
+++ b/tests/primer/packages_to_prime.json
@@ -2,7 +2,8 @@
   "astroid": {
     "branch": "main",
     "directories": ["astroid"],
-    "url": "https://github.com/PyCQA/astroid"
+    "url": "https://github.com/PyCQA/astroid",
+    "pylintrc_relpath": "pylintrc"
   },
   "black": {
     "branch": "main",
diff --git a/tests/primer/primer_tool.py b/tests/primer/primer_tool.py
index 6bd994249c..4d40cb2afa 100644
--- a/tests/primer/primer_tool.py
+++ b/tests/primer/primer_tool.py
@@ -6,10 +6,13 @@
 
 import argparse
 import json
+from io import StringIO
 from pathlib import Path
 
 import git
 
+from pylint.lint import Run
+from pylint.reporters import JSONReporter
 from pylint.testutils.primer import PackageToLint
 
 MAIN_DIR = Path(__file__).parent.parent.parent
@@ -49,6 +52,12 @@ def __init__(self, json_path: Path) -> None:
             default=False,
         )
 
+        # All arguments for the run parser
+        run_parser = self._subparsers.add_parser("run")
+        run_parser.add_argument(
+            "--type", choices=["main", "pr"], required=True, help="Type of primer run."
+        )
+
         # Storing arguments
         self.config = self._argument_parser.parse_args()
 
@@ -58,6 +67,8 @@ def __init__(self, json_path: Path) -> None:
     def run(self) -> None:
         if self.config.command == "prepare":
             self._handle_prepare_command()
+        if self.config.command == "run":
+            self._handle_run_command()
 
     def _handle_prepare_command(self) -> None:
         commit_string = ""
@@ -88,6 +99,32 @@ def _handle_prepare_command(self) -> None:
             ) as f:
                 f.write(commit_string)
 
+    def _handle_run_command(self) -> None:
+        packages: dict[str, list[dict[str, str | int]]] = {}
+
+        for package, data in self.packages.items():
+            output = self._lint_package(data)
+            packages[package] = output
+            print(f"Successfully primed {package}.")
+
+        with open(
+            PRIMER_DIRECTORY / f"output_{self.config.type}.txt", "w", encoding="utf-8"
+        ) as f:
+            json.dump(packages, f)
+
+    def _lint_package(self, data: PackageToLint) -> list[dict[str, str | int]]:
+        # We want to test all the code we can
+        enables = ["--enable-all-extensions", "--enable=all"]
+        # Duplicate code takes too long and is relatively safe
+        disables = ["--disable=duplicate-code"]
+        arguments = data.directories + data.pylint_args + enables + disables
+        if data.pylintrc_relpath:
+            arguments += [f"--rcfile={data.pylintrc_relpath}"]
+        output = StringIO()
+        reporter = JSONReporter(output)
+        Run(arguments, reporter=reporter, do_exit=False)
+        return json.loads(output.getvalue())
+
     @staticmethod
     def _get_packages_to_lint_from_json(json_path: Path) -> dict[str, PackageToLint]:
         with open(json_path, encoding="utf8") as f: