# What Is the License for the Humanizer Repository?

> Discover the MIT license for the blader/humanizer repository. Use, copy, modify, and distribute the software freely with the original copyright notice.

- Repository: [Siqi Chen/humanizer](https://github.com/blader/humanizer)
- Tags: licensing-information
- Published: 2026-09-11

---

**The Humanizer repository is released under the MIT License, a permissive open-source license that grants users the freedom to use, copy, modify, merge, publish, distribute, sublicense, and sell the software provided the original copyright notice and license terms are included.**

The **blader/humanizer** repository provides tools for humanizing AI-generated content, and understanding the **license for the humanizer repository** is critical for developers integrating this open-source code into their applications. The project explicitly adopts the MIT License across its core files, plugin manifests, and validation scripts, ensuring consistent legal terms for all users.

## MIT License Declaration in Source Files

The repository contains multiple authoritative references confirming its MIT License status. The `LICENSE` file in the root directory begins with the standard MIT License header, serving as the primary legal document governing the codebase.

The [`SKILL.md`](https://github.com/blader/humanizer/blob/main/SKILL.md) metadata file explicitly lists `license: MIT` in its configuration block, providing machine-readable license identification. For Claude plugin distributions, both [`.claude-plugin/plugin.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/plugin.json) and [`.claude-plugin/marketplace.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/marketplace.json) specify `"license": "MIT"` in their respective manifest files, ensuring plugin users understand the licensing terms.

## Understanding MIT License Permissions

The MIT License is a highly permissive open-source license that imposes minimal restrictions on reuse. When using the Humanizer codebase, you are granted the following rights:

- Use the software for any purpose, including commercial applications
- Copy, modify, and merge the code with existing projects
- Publish, distribute, and sublicense the software to others
- Sell copies of the software without royalty obligations

The sole requirement is that you must include the original copyright notice and the full license text in any substantial distribution of the software. This makes the MIT License particularly suitable for both open-source and proprietary development.

## Verifying License in Additional Repository Files

Several supporting files reinforce the licensing status and help automated tools validate compliance. The [`README.md`](https://github.com/blader/humanizer/blob/main/README.md) contains project overview documentation that mentions the MIT license for end-user clarity.

For OpenAI-compatible agent configurations, the [`agents/openai.yaml`](https://github.com/blader/humanizer/blob/main/agents/openai.yaml) file operates under the same MIT License terms as the core repository. The [`scripts/validate-package.py`](https://github.com/blader/humanizer/blob/main/scripts/validate-package.py) script includes validation logic that ensures package consistency, potentially verifying that the `LICENSE` file is present in distributed packages.

## Practical Implementation: Compliance Examples

When incorporating Humanizer into your projects, proper attribution ensures compliance with the MIT License terms.

### Adding License Headers to Python Extensions

When creating extensions that modify or wrap Humanizer functionality, include the copyright notice at the top of your files:

```python

# Example: Adding the Humanizer MIT license header to a new Python file

license_header = """\

# Humanizer

# Copyright (c) 2024 BladeR

# Licensed under the MIT License (see LICENSE file for details)

"""

with open("my_humanizer_extension.py", "w") as f:
    f.write(license_header + "\n")
    # ... your code here ...

```

### Packaging Distribution Archives

Ensure you include the license file when distributing applications that bundle Humanizer:

```bash

# Example: Including the license when packaging a distribution

# Copy the LICENSE file into your packaged archive

cp path/to/humanizer/LICENSE ./dist/

```

## Summary

- The **blader/humanizer** repository is governed by the **MIT License**, confirmed in the `LICENSE` file, [`SKILL.md`](https://github.com/blader/humanizer/blob/main/SKILL.md) metadata, and plugin manifests at [`.claude-plugin/plugin.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/plugin.json) and [`.claude-plugin/marketplace.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/marketplace.json).
- The license permits unrestricted commercial use, modification, and distribution, requiring only preservation of the original copyright notice and license text.
- Validation scripts such as [`scripts/validate-package.py`](https://github.com/blader/humanizer/blob/main/scripts/validate-package.py) help ensure distributed packages maintain proper licensing files.
- Compliance requires including the `LICENSE` file from the repository root when redistributing the software or derivative works.

## Frequently Asked Questions

### Is the Humanizer repository free for commercial use?

Yes. The MIT License explicitly permits commercial use, allowing integration into proprietary applications, SaaS products, and enterprise environments without licensing fees. You must only include the original copyright notice and `LICENSE` file when distributing the software.

### Where is the license information stored in the repository?

The primary license text resides in the `LICENSE` file at the repository root. Additional declarations appear in [`SKILL.md`](https://github.com/blader/humanizer/blob/main/SKILL.md) (listing `license: MIT`), [`.claude-plugin/plugin.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/plugin.json) (specifying `"license": "MIT"`), and [`.claude-plugin/marketplace.json`](https://github.com/blader/humanizer/blob/main/.claude-plugin/marketplace.json) for plugin distributions.

### Do I need to open-source my project if I use Humanizer?

No. The MIT License is not a copyleft license. You may use Humanizer in closed-source, proprietary projects without disclosing your source code or using the same license. Only the Humanizer components themselves retain the MIT License requirements.

### What are the specific attribution requirements?

You must retain the copyright notice and permission notice (the `LICENSE` file) in all copies or substantial portions of the software. When distributing derivative works, include the original `LICENSE` file from the repository and ensure the copyright notice remains visible in your documentation or source code headers.