diff --git a/.changeset/spotty-terms-occur.md b/.changeset/spotty-terms-occur.md
new file mode 100644
index 0000000000..471ba6d0dc
--- /dev/null
+++ b/.changeset/spotty-terms-occur.md
@@ -0,0 +1,5 @@
+---
+'@backstage/repo-tools': patch
+---
+
+Execute `openapi-generator-cli` from `@backstage/repo-tools` directory to force it to use our openapitools.json config file.
diff --git a/packages/repo-tools/package.json b/packages/repo-tools/package.json
index 991dcbd7af..7a7e56d68c 100644
--- a/packages/repo-tools/package.json
+++ b/packages/repo-tools/package.json
@@ -87,7 +87,8 @@
   "files": [
     "bin",
     "dist/**/*.js",
-    "templates"
+    "templates",
+    "openapitools.json"
   ],
   "nodemonConfig": {
     "watch": "./src",
diff --git a/packages/repo-tools/src/commands/openapi/client/generate.ts b/packages/repo-tools/src/commands/openapi/client/generate.ts
index 5efd4dadd9..f827f1005f 100644
--- a/packages/repo-tools/src/commands/openapi/client/generate.ts
+++ b/packages/repo-tools/src/commands/openapi/client/generate.ts
@@ -36,10 +36,9 @@ async function generate(spec: string, outputDirectory: string) {
   );
 
   await exec(
-    // The actual main.js file for the binary isn't executable but yarn does _something_ to make it executable.
-    // TODO (sennyeya@): Make this use the actual binary
-    `yarn openapi-generator-cli`,
+    'node',
     [
+      resolvePackagePath('@openapitools/openapi-generator-cli', 'main.js'),
       'generate',
       '-i',
       resolvedOpenapiPath,
@@ -52,20 +51,14 @@ async function generate(spec: string, outputDirectory: string) {
         '@backstage/repo-tools',
         'templates/typescript-backstage.yaml',
       ),
-      '-t',
-      resolvePackagePath(
-        '@backstage/repo-tools',
-        'templates/typescript-backstage',
-      ),
       '--generator-key',
       'v3.0',
     ],
     {
       maxBuffer: Number.MAX_VALUE,
-      cwd: cliPaths.ownDir,
+      cwd: resolvePackagePath('@backstage/repo-tools'),
       env: {
         ...process.env,
-        // PWD: outputDirectory,
       },
     },
   );
@@ -74,8 +67,9 @@ async function generate(spec: string, outputDirectory: string) {
     `yarn backstage-cli package lint --fix ${resolvedOutputDirectory}`,
   );
 
-  if (cliPaths.resolveTargetRoot('node_modules/.bin/prettier')) {
-    await exec(`yarn prettier --write ${resolvedOutputDirectory}`);
+  const prettier = cliPaths.resolveTargetRoot('node_modules/.bin/prettier');
+  if (prettier) {
+    await exec(`${prettier} --write ${resolvedOutputDirectory}`);
   }
 
   fs.removeSync(resolve(resolvedOutputDirectory, '.openapi-generator-ignore'));
diff --git a/packages/repo-tools/templates/typescript-backstage.yaml b/packages/repo-tools/templates/typescript-backstage.yaml
index 7137b5a8c6..b2b068856d 100644
--- a/packages/repo-tools/templates/typescript-backstage.yaml
+++ b/packages/repo-tools/templates/typescript-backstage.yaml
@@ -18,4 +18,4 @@ files:
     destinationFilename: apis/index.ts
   pluginId.mustache:
     templateType: SupportingFiles
-    destinationFilename: pluginId.ts
\ No newline at end of file
+    destinationFilename: pluginId.ts