Add n8n custom node for Codegen API integration

Author: codegen-sh[bot]

n8n-node/LICENSE

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+MIT License
+
+Copyright (c) 2025 Codegen
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+

n8n-node/README.md

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+# n8n-nodes-codegen
+
+This is an n8n community node for integrating with the [Codegen](https://codegen.com) API. It allows you to interact with Codegen's AI-powered software engineering capabilities directly from your n8n workflows.
+
+[n8n](https://n8n.io/) is a [fair-code licensed](https://docs.n8n.io/reference/license/) workflow automation platform.
+
+## Features
+
+This node allows you to:
+
+- Run Codegen agent tasks
+- Ask the Codegen expert system questions
+- Create new codemods
+
+## Installation
+
+Follow the [installation guide](https://docs.n8n.io/integrations/community-nodes/installation/) in the n8n community nodes documentation.
+
+## Operations
+
+### Agent
+
+- **Run**: Run a Codegen agent task
+- **Ask Expert**: Ask the Codegen expert system a question
+- **Create Codemod**: Create a new codemod
+
+## Credentials
+
+To use this node, you need to create credentials for the Codegen API:
+
+1. Get your API token from [Codegen](https://codegen.com)
+2. Use this token in the Codegen API credentials in n8n
+
+## Resources
+
+* [Codegen API Documentation](https://docs.codegen.com/introduction/api)
+* [n8n Community Nodes Documentation](https://docs.n8n.io/integrations/community-nodes/)
+
+## Version history
+
+- 0.1.0: Initial release
+
+## License
+
+[MIT](https://github.com/codegen-sh/codegen/blob/main/LICENSE.md)
+

n8n-node/credentials/CodegenApi.credentials.ts

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+import {
+	ICredentialType,
+	INodeProperties,
+} from 'n8n-workflow';
+
+export class CodegenApi implements ICredentialType {
+	name = 'codegenApi';
+	displayName = 'Codegen API';
+	documentationUrl = 'https://docs.codegen.com/introduction/api';
+	properties: INodeProperties[] = [
+		{
+			displayName: 'API Token',
+			name: 'apiToken',
+			type: 'string',
+			typeOptions: {
+				password: true,
+			},
+			default: '',
+			required: true,
+			description: 'The API token for Codegen API authentication',
+		},
+	];
+}
+

n8n-node/gulpfile.js

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+const { src, dest } = require('gulp');
+
+// Copies the icon files from the nodes source folders to the dist folder
+function copyIcons() {
+  return src('./nodes/**/*.svg')
+    .pipe(dest('./dist/nodes/'));
+}
+
+exports['build:icons'] = copyIcons;
+

n8n-node/index.js

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+module.exports = {
+    packageName: 'n8n-nodes-codegen',
+    nodeTypes: {
+        Codegen: {
+            sourcePath: './dist/nodes/Codegen/Codegen.node.js',
+            type: 'Codegen',
+        },
+    },
+    credentialTypes: {
+        CodegenApi: {
+            sourcePath: './dist/credentials/CodegenApi.credentials.js',
+            type: 'CodegenApi',
+        },
+    },
+};
+

n8n-node/nodes/Codegen/Codegen.node.json

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+{
+  "node": "n8n-nodes-base.codegen",
+  "nodeVersion": "1.0",
+  "codexVersion": "1.0",
+  "categories": [
+    "Development",
+    "AI"
+  ],
+  "resources": {
+    "credentialDocumentation": [
+      {
+        "url": "https://docs.codegen.com/introduction/api"
+      }
+    ],
+    "primaryDocumentation": [
+      {
+        "url": "https://docs.codegen.com/introduction/api"
+      }
+    ]
+  }
+}
+