# Batch License Header Injector for Source Code (`aspiring_hypotenuse_ior/add-license-information-to-codebase`) Actor

Automatically prepend license text to multiple codebase files to ensure legal compliance across your project. This tool takes a license string and a list of file paths/contents, returning the updated files with a properly formatted blank line separating the license from your original code.

- **URL**: https://apify.com/aspiring\_hypotenuse\_ior/add-license-information-to-codebase.md
- **Developed by:** [Lore Nest](https://apify.com/aspiring_hypotenuse_ior) (community)
- **Categories:** Developer tools
- **Stats:** 2 total users, 1 monthly users, 100.0% runs succeeded, 0 bookmarks
- **User rating**: No ratings yet

## Pricing

from $1.76 / 1,000 results

This Actor is paid per event. You are not charged for the Apify platform usage, but only a fixed price for specific events.
Since this Actor supports Apify Store discounts, the price gets lower the higher subscription plan you have.

Learn more: https://docs.apify.com/actors/running/actors-in-store.md#pay-per-event

## What's an Apify Actor?

Actors are web data automations that power AI and operations. They run on the Apify platform to scrape websites, process data, connect APIs, and automate workflows.
In Batch mode, an Actor accepts a well-defined JSON input, performs an action which can take anything from a few seconds to a few hours,
and optionally produces a well-defined JSON output, datasets with results, or files in key-value store.
In Standby mode, an Actor provides a web server which can be used as a website, API, or an MCP server.
Actors are written with capital "A".

## How to integrate an Actor?

If asked about integration, you help developers integrate Actors into their projects.
You adapt to their stack and deliver integrations that are safe, well-documented, and production-ready.
The best way to integrate Actors is as follows.

- **AI agents and MCP clients** — the [Apify MCP server](https://docs.apify.com/integrations/mcp.md) at `https://mcp.apify.com` (remote, streamable HTTP, OAuth on first use).
- **Agentic workflows and local Actor development** — [Agent Skills](https://apify.com/.well-known/agent-skills/index.json) with the [Apify CLI](https://docs.apify.com/cli/docs.md): `npm install -g apify-cli`, then `apify login`.
- **JavaScript/TypeScript projects** — the official [JS/TS client](https://docs.apify.com/api/client/js/docs.md): `npm install apify-client`.
- **Python projects** — the official [Python client](https://docs.apify.com/api/client/python/docs.md): `pip install apify-client`.
- **Any other language** — the [REST API](https://docs.apify.com/api/v2.md).

For usage examples, see the [API](#api) section below.

For more details, see Apify documentation as [Markdown index](https://docs.apify.com/llms.txt) and [Markdown full-text](https://docs.apify.com/llms-full.txt).

# README

## Batch License Header Injector for Source Code

Automatically prepend license text to multiple codebase files to ensure legal compliance across your project. This tool takes a license string and a list of file paths/contents, returning the updated files with a properly formatted blank line separating the license from your original code.

Automatically prepend license text to multiple source code files to ensure consistent legal compliance across your entire codebase. Rather than manually editing every file or writing custom scripts, this Actor takes your license string and a batch of file paths with their contents, returning each file with the license cleanly prepended and properly separated from the original code.

### Use Cases

- **Open-Source Project Onboarding**: When transitioning a proprietary project to open-source, you can retroactively add an MIT, Apache 2.0, or GPL license header to every source file in a single batch operation, ensuring no file is missed.
- **Legal Re-licensing of Existing Repositories**: If your organization updates its standard license (for example, switching from one corporate license to another), you can re-process the entire codebase in one call to propagate the new header uniformly.
- **Multi-file Code Generation Pipelines**: Code generators that emit many files at once can pipe each generated file's path and content through this Actor to ensure every newly created file ships with the required attribution and copyright notice.
- **Enforcing Company-wide License Standards**: DevOps and compliance teams can use this Actor as a final post-processing step in CI/CD pipelines to verify that all source files carry the mandated corporate license header before artifacts are published.
- **Batch Header Updates for Repositories Acquired or Merged**: When absorbing another codebase, you can prepend your organization's license to every file in the acquired project in a single batch rather than opening each file individually.

### How It Works

The Actor receives a JSON payload containing a `license` string and a `files` array, where each element is an object with a `path` and a `content` field. It iterates through every file in the array and, if a non-empty license is provided, constructs the new file content by right-stripping trailing newlines from the license text and concatenating it with a blank line separator followed by the original content. Files with an empty license string are returned unchanged. Finally, the Actor returns a `modified_files` array containing each file's path alongside its newly prepended content, ready to be written back to disk or passed downstream.

### Usage on Apify

Run it directly from the Apify Console ("Start"/"Try for free"), or call it via the API:

```
POST https://api.apify.com/v2/acts/add-license-information-to-codebase/run-sync-get-dataset-items?token=<YOUR_APIFY_TOKEN>
Content-Type: application/json

{}
```

### Pricing

Pay-per-event, billed automatically by Apify -- no separate account or payment step:

- Actor start: $0.00005 per GB of memory (minimum one event per run)
- Result: $0.005 per item returned -- this is the primary, usage-based charge

Also independently available at $0.0100 USDC (Base) per call via the x402 payment protocol (`POST /tools/add-license-information-to-codebase`) for callers outside the Apify platform.

### Example output

Real output captured from this tool's own build-time smoke test (input above):

```json
{
  "modified_files": []
}
```

## Actor input object example

```json
{}
```

# API

You can run this Actor programmatically using our API. Below are code examples in JavaScript, Python, and CLI, as well as the OpenAPI specification and MCP server setup.

## JavaScript example

```javascript
import { ApifyClient } from 'apify-client';

// Initialize the ApifyClient with your Apify API token
// Replace the '<YOUR_API_TOKEN>' with your token
const client = new ApifyClient({
    token: '<YOUR_API_TOKEN>',
});

// Prepare Actor input
const input = {};

// Run the Actor and wait for it to finish
const run = await client.actor("aspiring_hypotenuse_ior/add-license-information-to-codebase").call(input);

// Fetch and print Actor results from the run's dataset (if any)
console.log('Results from dataset');
console.log(`💾 Check your data here: https://console.apify.com/storage/datasets/${run.defaultDatasetId}`);
const { items } = await client.dataset(run.defaultDatasetId).listItems();
items.forEach((item) => {
    console.dir(item);
});

// 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/js/docs

```

## Python example

```python
from apify_client import ApifyClient

# Initialize the ApifyClient with your Apify API token
# Replace '<YOUR_API_TOKEN>' with your token.
client = ApifyClient("<YOUR_API_TOKEN>")

# Prepare the Actor input
run_input = {}

# Run the Actor and wait for it to finish
run = client.actor("aspiring_hypotenuse_ior/add-license-information-to-codebase").call(run_input=run_input)

# Fetch and print Actor results from the run's dataset (if there are any)
print(f"💾 Check your data here: https://console.apify.com/storage/datasets/{run.default_dataset_id}")
for item in client.dataset(run.default_dataset_id).iterate_items():
    print(item)

# 📚 Want to learn more 📖? Go to → https://docs.apify.com/api/client/python/docs/quick-start

```

## CLI example

```bash
echo '{}' |
apify call aspiring_hypotenuse_ior/add-license-information-to-codebase --silent --output-dataset

```

## MCP server setup

```json
{
    "mcpServers": {
        "apify": {
            "type": "http",
            "url": "https://mcp.apify.com/?tools=fetch-actor-details,aspiring_hypotenuse_ior/add-license-information-to-codebase"
        }
    }
}

```

The hosted server signs you in with OAuth on first connect, so no API token belongs in this config. Clients without OAuth support can send an `Authorization: Bearer <APIFY_API_TOKEN>` header instead, using a token from API & Integrations in Apify Console (https://console.apify.com/settings/integrations).

## OpenAPI specification

Download the OpenAPI definition: https://api.apify.com/v2/actors/7msGOOgRIfDPNYdpK/builds/J9iaw76nzJ8R4Jmad/openapi.json