How do I use Password Generator MCP Server?

1. Click on "Deploy Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@Password Generator MCP Server generate a strong password for my email" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

Password Generator MCP Server

by raki0230

Overview Schema Source Related Servers Discussions Admin

Python

Local

Password Generator MCP Server

A simple Model Context Protocol (MCP) server built using the Python MCP SDK to demonstrate the three core MCP Primitives:

🛠️ Tools – Generate a secure password.
📄 Resources – Expose a password policy.
💡 Prompts – Provide a reusable prompt template for generating secure passwords.

This project accompanies my Medium article on MCP Inspector and MCP Primitives, providing a hands-on example to help you understand how these concepts work together.

Project Structure

MCP-INSPECTOR/
│
├── prompts/
│   ├── __init__.py
│   └── password_prompt.py
│
├── resources/
│   ├── __init__.py
│   └── password_resource.py
│
├── tools/
│   ├── __init__.py
│   └── password_tool.py
│
├── .gitignore
├── .python-version
├── app.py
├── pyproject.toml
├── README.md
├── server.py
└── uv.lock

Project Overview

app.py – Creates the FastMCP server instance.
server.py – Entry point that registers all MCP primitives and starts the server.
tools/password_tool.py – Implements the Password Generator Tool.
resources/password_resource.py – Exposes the Password Policy Resource.
prompts/password_prompt.py – Defines the reusable Prompt template.
pyproject.toml – Project configuration and project dependencies.
uv.lock – Lock file generated by UV.
README.md – Project documentation.

Clone the Repository

Clone the repository to your local machine.

git clone <YOUR_GITHUB_REPOSITORY_LINK>

Navigate to the project directory.

cd MCP-INSPECTOR

Synchronize and install all project dependencies.

uv sync

Activate the virtual environment.

Windows

.venv\Scripts\activate

Running the MCP Server with MCP Inspector

Start the MCP server using:

mcp dev server.py

This command starts the MCP server and automatically launches MCP Inspector in your browser.

Using MCP Inspector you can:

View all registered MCP primitives.
Execute Tools.
Read Resources.
Test Prompt templates.
Validate your MCP server before integrating it with an MCP client.

Screenshot: MCP Inspector Home Page

Testing the Tool

Open the Tools section inside MCP Inspector.

Select generate_password and provide the required inputs such as:

Password Length
Include Special Characters

Execute the Tool to generate a secure password.

Screenshot: Password Generator Tool

Screenshot: Generated Password Output

Testing the Resource

Open the Resources section.

Select the password://policy resource.

The server returns the password policy and security recommendations exposed by the MCP server.

Screenshot: Password Policy Resource

Testing the Prompt

Navigate to the Prompts section.

Select create_secure_password_prompt.

Provide an account type such as:

Banking
Email
Social Media

The Prompt generates a reusable instruction template for creating a secure password.

Screenshot: Prompt Execution

Installing the MCP Server in Claude Desktop

Open a new terminal and run:

mcp install server.py

Once the installation is complete, restart Claude Desktop if it is already running.

Claude Desktop will automatically discover the MCP server and its registered primitives.

You can now interact with the server using natural language.

For example:

Generate a strong password for my email.

Show me the password policy.

alt text Claude Desktop Detecting the MCP Server

alt text Claude Desktop Invoking the Password Generator Tool

Creating an MCP Project from Scratch

If you'd like to build your own MCP server from scratch, follow these steps.

1. Initialize a UV Project

uv init

2. Create a Virtual Environment

uv venv

3. Activate the Virtual Environment

Windows

.venv\Scripts\activate

4. Install the MCP SDK

uv add "mcp[cli]"

5. Start MCP Inspector

mcp dev server.py

6. Install the MCP Server in Claude Desktop

Open a new terminal and run:

mcp install server.py

MCP Primitives Included

🛠️ Tool

generate_password()

Generates a secure password with configurable length and optional special characters.

📄 Resource

password://policy

Returns the password generation policy and recommended password security practices.

💡 Prompt

create_secure_password_prompt()

Creates a reusable prompt template for generating a secure password for a specified account type.

Medium Article

If you're new to MCP and would like a detailed explanation of MCP Inspector and MCP Primitives, check out my accompanying Medium article.

Medium: https://medium.com/@n.raki2331/understanding-mcp-inspector-and-the-three-core-mcp-primitives-tools-resources-prompts-e6069f1ca75d?sharedUserId=n.raki2331

Available Tools

1 tool

generate_passwordC

Generate a secure random password.

ParametersJSON Schema

Name	Required	Description	Default
`length`	No
`symbols`	No

Output Schema

ParametersJSON Schema

Name	Required	Description
`result`	Yes

TDQS

C2.8/5.0

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries the full burden of behavioral disclosure. It only adds the qualifiers 'secure random'; it does not describe character composition, whether symbols are included, configurable length, or any limitations.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness4/5

Is the description appropriately sized, front-loaded, and free of redundancy?

A single, clear sentence with no wasted words and the core action front-loaded. It is appropriately brief, though the brevity leaves behavioral and parameter details unstated.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness3/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

The tool is low-complexity and an output schema exists, so return-value documentation is not needed in the description. However, with no annotations and no explanation of how the parameters affect the generated password, the definition is only minimally complete.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters2/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 0%, and the description does not mention 'length' or 'symbols'. The parameter names are somewhat self-explanatory, but the description adds no meaning beyond the schema and does not compensate for the lack of parameter documentation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description uses a specific verb ('Generate') and resource ('secure random password'), clearly conveying what the tool does. It does not differentiate from siblings because no sibling tools are listed, so it does not reach the top score.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives no guidance on when to use this tool versus alternatives, no exclusions, and no usage context. Whether to call it must be inferred entirely from the verb 'Generate'.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

1 tool updatev0.1.0Aug 30, 2026
- First observedgenerate_password

Deploy Server

One endpoint for every MCP toolRayrun runs every MCP server behind one URL and holds the credentials. Each call is decided per client, tool, and argument, then recorded.ray.runAd

TDQS

B3.1/5.0

Scored 2026-08-30 18:45 across 1 tool

Disambiguation5/5

With only one tool, there is no possibility of ambiguity or confusion between tools. The tool's purpose is clearly unique.

Naming Consistency5/5

The single tool name 'generate_password' follows a clear verb_noun pattern, which is standard and predictable. No inconsistencies exist.

Tool Count3/5

A single tool is borderline insufficient for a password generator, as users often expect options like length, character sets, or multiple generation methods. The server feels thin but is not extreme.

Completeness2/5

The server only offers a basic generate_password function with no parameters described. Real-world password generators typically include customization options (length, symbols, numbers, etc.), so the surface is incomplete for a robust tool.

Maintenance

ActivityStale

ResponsivenessNo issues

Resources

GitHub Repository

Need Help?

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Password Generator MCP Server

Project Structure

Project Overview

Clone the Repository

Running the MCP Server with MCP Inspector

Testing the Tool

Testing the Resource

Testing the Prompt

Installing the MCP Server in Claude Desktop

Creating an MCP Project from Scratch

1. Initialize a UV Project

2. Create a Virtual Environment

3. Activate the Virtual Environment

4. Install the MCP SDK

5. Start MCP Inspector

6. Install the MCP Server in Claude Desktop

MCP Primitives Included

🛠️ Tool

📄 Resource

💡 Prompt

Medium Article

Available Tools

Output Schema

TDQS

Tool Schema Changelog

TDQS

Maintenance

Resources

Related MCP Connectors

Related MCP Servers

Personal Assistant MCP Server

passwords-mcp

secret-vault-mcp

mcp-passwordgen