Entropy0

by entropy0dev

248 downloads

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GitHub

About

Source trust for AI agents — evaluates URLs and domains before ingestion, returns proceed/deny decisions with scores and reason codes.

Details

Author: entropy0dev
Downloads: 248
Categories: Other, Security, AI

Setting up with Highlight

This MCP is not yet compatible with Highlight’s one-click setup. However, you can still use it with Highlight by following these steps:

Download and install Highlight from highlightai.com/download
Navigate to the plugins tab and select "Add Custom Plugin"
Configure the plugin with the settings below

Plugin Name Entropy0

Command (node, npx, python, etc.)

Please refer to the README for specific instructions on how to obtain API keys or other required environment variables.
Enable "Start Automatically" if you want the plugin to start when Highlight launches

Setting up with Cursor

Open Cursor's settings
Navigate to the MCP section
Click "Add new Global MCP server"
Copy and paste the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

Setting up with Claude Desktop

Open Claude Desktop's settings
Go to the Integrations tab
Click "Add MCP Server"
Use the configuration below based on your operating system

Note: Make sure Claude Desktop is running before attempting to connect.

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

Setting up with Windsurf

Open Windsurf's preferences
Go to the Integrations section
Click "Add MCP Integration"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

Setting up with Cline

Open Cline's settings
Navigate to the Integrations section
Click "Add MCP Server"
Copy and paste the configuration below based on your operating system

Note: Make sure to restart Cline after adding the configuration.

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

Setting up with Goose

Open Goose's preferences
Go to the Integrations tab
Select "MCP Servers"
Click "Add New Server"
Use the configuration below based on your operating system

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

JSON

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

From the repository

Install the MCP server package via npm (@entropy0/mcp) and configure it with your Entropy0 API key. The server exposes tools that evaluate domains or URLs, returning a recommended action that your agent can reason about. Configuration details are managed through the MCP integration in your client application.

Claude Desktop / Cursor

Paste into your MCP client config file to install this server.

{
    "mcpServers": {
        "entropy0": {
            "entropy0": {
                "command": "npx",
                "args": [
                    "-y",
                    "@entropy0/mcp"
                ],
                "env": {
                    "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
                }
            }
        }
    }
}

McpServers

{
    "entropy0": {
        "command": "npx",
        "args": [
            "-y",
            "@entropy0/mcp"
        ],
        "env": {
            "ENTROPY0_API_KEY": "<YOUR_API_KEY>"
        }
    }
}

Entropy0 SDK

AI agents fetch URLs, follow links, and act on domains they've never seen before. Most of the time that's fine. Sometimes it isn't — phishing infrastructure, newly registered lookalike domains, brand impersonation sites, or plain malware hosting.

Entropy0 adds a trust gate between your agent and the external web. One API call returns a machine-readable recommended action your agent can reason about before it fetches, navigates, or transacts.

Try it without signing up →

POST /v1/decide { "domain": "secure-login-verify-account.xyz" }

→ recommended_action: "deny" confidence: 91% signals: [NEWLY_REGISTERED_DOMAIN, BRAND_MISMATCH, CERTIFICATE_ANOMALY]

---

Packages

| Package | Registry | Description |
|---|---|---|
| entropy0-langchain | PyPI | LangChain tool — trust-gate URLs before agents fetch from them |
| @entropy0/express | npm | Express middleware — evaluate request targets through /v1/decide |
| @entropy0/mcp | npm | MCP server — source trust and URL safety tools for Claude Desktop, Cursor, Cline |

---

Quick start

LangChain (Python)

pip install entropy0-langchain

```python
from entropy0_langchain import Entropy0Tool

tools = [Entropy0Tool(api_key="sk_ent0_xxxx")]

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Details

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Setting up with Highlight

From the repository

Claude Desktop / Cursor

McpServers

Entropy0 SDK

Packages

Quick start

Install

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