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MCP Ahrefs

Ahrefs MCP Server for SAAGA

Quick Start with AI Assistant

Need help getting started? Have your AI coding assistant guide you!

Simply tell your AI assistant: "I have a MCP Ahrefs project. Please read and follow WORKING_WITH_SAAGA_PROMPT.md to help me understand and work with this MCP server."

For quick reference, the .ai-prompts.md file contains a condensed version of key patterns.

For detailed technical documentation, see docs/DECORATOR_PATTERNS.md.

Related MCP server: Haloscan MCP Server

Testing with MCP Inspector

Ready to test your MCP server? The MCP Inspector Guide provides:

  • Step-by-step setup instructions with virtual environment troubleshooting

  • Test examples for all included tools

  • JSON mode instructions for parallel tools

  • Common issues and solutions

Quick start:

source .venv/bin/activate  # Or use: uv shell
uv run mcp dev mcp_ahrefs/server/app.py

Testing with Claude CLI

This project includes a convenient test script for testing your MCP server with Claude:

# Test with a simple prompt
./test_mcp_with_claude.sh "List all available tools"

# Test a specific tool
./test_mcp_with_claude.sh "Run the echo_tool with message 'Hello World'"

# Test with multiple tools
./test_mcp_with_claude.sh "Test calculate_fibonacci with n=10 and echo_tool with message 'Done'"

# On Windows
.\test_mcp_with_claude.ps1 "List all available tools"

The script automatically:

  • Uses the generated mcp.integration_test.json configuration (created by cookiecutter)

  • Runs Claude with the Sonnet model

  • Includes proper MCP configuration flags

  • Provides colored output for better readability

MCP Integration Testing

This project includes comprehensive integration tests that validate tools work correctly with real MCP client interactions:

Running Integration Tests

# Run all integration tests
test-mcp-integration

# Run with verbose output
test-mcp-integration --verbose

# Test specific tool
test-mcp-integration --tool echo_tool

# List all available tools
test-mcp-integration --list

# Cross-platform scripts also available
./test_mcp_integration.sh        # Unix/Mac
.\test_mcp_integration.ps1        # Windows

What's Tested

The integration tests validate:

  • Tool Discovery: All tools are discoverable with correct schemas (no "kwargs" parameters)

  • Parameter Conversion: String parameters from MCP are converted to appropriate types

  • Error Handling: Invalid parameters and exceptions return proper error responses

  • SAAGA Integration: Decorators work correctly in the full MCP protocol flow

  • Protocol Compliance: Tools work with real MCP client connections

Generating Tests for New Tools

When you add a new tool, generate integration tests for it:

# Generate test template
generate-mcp-tests my_new_tool

# This creates a test template you can customize
# Add it to tests/integration/test_mcp_integration.py

Integration vs Unit Tests

  • Unit Tests (test_decorators.py): Test SAAGA decorators in isolation

  • Integration Tests (test_mcp_integration.py): Test complete MCP protocol flow with real client

Run both test suites to ensure full coverage:

# Run all tests
pytest

# Run only unit tests
pytest tests/test_decorators.py

# Run only integration tests
test-mcp-integration

Overview

This MCP server was generated using the SAAGA MCP Server Cookie Cutter template. It includes:

  • FastMCP Integration: Modern MCP framework with dual transport support

  • SAAGA Decorators: Automatic exception handling, logging, and parallelization

  • Platform-Aware Configuration: Cross-platform configuration management

  • Streamlit Admin UI: Web-based configuration and monitoring interface

  • SQLite Logging: Comprehensive logging with database persistence

Installation

Prerequisites

  • Python 3.12 or higher

  • UV - An extremely fast Python package manager

Install from Source

# Install UV (if not already installed)
curl -LsSf https://astral.sh/uv/install.sh | sh  # On macOS/Linux
# Or visit https://github.com/astral-sh/uv for Windows instructions

git clone <your-repository-url>
cd mcp_ahrefs
uv venv
uv sync

Development Installation

git clone <your-repository-url>
cd mcp_ahrefs
uv venv
uv sync --extra dev

Usage

Running the MCP Server

The server can be run in two modes:

1. STDIO Mode (for MCP clients like Claude Desktop)

# Run with default settings
uv run python -m mcp_ahrefs.server.app

# Run with custom log level
uv run python -m mcp_ahrefs.server.app --log-level DEBUG

# Run the server directly
uv run python mcp_ahrefs/server/app.py

uv run mcp_ahrefs-server

2. SSE Mode (for web-based clients)

# Run with SSE transport
uv run python -m mcp_ahrefs.server.app --transport sse --port 3001

# Run with custom host and port
uv run python -m mcp_ahrefs.server.app --transport sse --host 0.0.0.0 --port 8080

Command Line Options

uv run python -m mcp_ahrefs.server.app --help

Available options:

  • --transport: Choose between "stdio" (default) or "sse"

  • --host: Host to bind to for SSE transport (default: 127.0.0.1)

  • --port: Port to bind to for SSE transport (default: 3001)

  • --log-level: Logging level - DEBUG, INFO, WARNING, ERROR (default: INFO)

MCP Client Configuration

Claude Desktop Configuration

Add the following to your Claude Desktop MCP settings (claude_desktop_config.json):

{
  "mcpServers": {
    "mcp_ahrefs": {
      "command": "uv",
      "args": ["run", "python", "-m", "mcp_ahrefs.server.app"],
      "cwd": "/Users/jakub/Ragnarson/saaga/mcp_ahrefs"
    }
  }
}

Advanced Configuration Options

{
  "mcpServers": {
    "mcp_ahrefs": {
      "command": "uv",
      "args": [
        "run", "python", "-m", "mcp_ahrefs.server.app",
        "--log-level", "DEBUG"
      ],
      "cwd": "/Users/jakub/Ragnarson/saaga/mcp_ahrefs",
      "env": {
        "UV_PROJECT_ENVIRONMENT": "/Users/jakub/Ragnarson/saaga/mcp_ahrefs/.venv"
      }
    }
  }
}

Using with System Python (Alternative)

{
  "mcpServers": {
    "mcp_ahrefs": {
      "command": "/Users/jakub/Ragnarson/saaga/mcp_ahrefs/.venv/bin/python",
      "args": ["-m", "mcp_ahrefs.server.app"]
    }
  }
}

Using with uv tool

{
  "mcpServers": {
    "mcp_ahrefs": {
      "command": "uv",
      "args": ["--directory=/Users/jakub/Ragnarson/saaga/mcp_ahrefs", "run" ,"mcp_ahrefs-server"]
    }
  }
}

Configuration File Locations

  • macOS: ~/Library/Application Support/Claude/claude_desktop_config.json

  • Linux: ~/.config/Claude/claude_desktop_config.json

  • Windows: %APPDATA%/Claude/claude_desktop_config.json

Admin UI

Launch the Streamlit admin interface:

uv run streamlit run mcp_ahrefs/ui/app.py

Dashboard

Streamlit Admin UI Dashboard

The dashboard provides:

  • Real-time server status monitoring

  • Project information and configuration overview

  • Quick access to common actions

  • System resource usage

Configuration Editor

Streamlit Admin UI Configuration

The configuration editor features:

  • Live configuration editing with validation

  • Diff preview showing pending changes

  • Export/import functionality (JSON & YAML formats)

  • Reset to defaults with confirmation dialog

  • Automatic server restart notifications

Log Viewer

Streamlit Admin UI Logs

The log viewer includes:

  • Date range filtering for historical analysis

  • Status filtering (success/error/all)

  • Tool-specific filtering

  • Export capabilities for further analysis

  • Real-time log updates

AI Assistant Instructions

When working with this MCP Ahrefs MCP server in an AI coding assistant (like Claude, Cursor, or GitHub Copilot):

Understanding the Server Architecture

This server uses SAAGA decorators that automatically wrap all MCP tools with:

  • Exception handling: All errors are caught and returned as structured error responses

  • Comprehensive logging: All tool invocations are logged with timing and parameters

  • Optional parallelization: Tools marked for parallel execution run concurrently

Key Points for AI Assistants

  1. Tool Registration Pattern: Tools are registered with decorators already applied. Do NOT manually wrap tools with decorators - this is handled automatically in server/app.py.

  2. Parameter Types: MCP passes all parameters as strings from the client. Ensure your tools handle type conversion:

    def my_tool(count: str) -> dict:
        # Convert string to int
        count_int = int(count)
        return {"result": count_int * 2}
  3. Error Handling: Tools can raise exceptions freely - the exception_handler decorator will catch them and return proper error responses.

  4. Async Support: Both sync and async tools are supported. The decorators automatically detect and handle both patterns.

  5. Logging: Check logs at the platform-specific data directory for debugging:

    • macOS: ~/Library/Application Support/mcp_ahrefs/logs.db

    • Linux: ~/.local/share/mcp_ahrefs/logs.db

    • Windows: %APPDATA%/mcp_ahrefs/logs.db

Common Tasks

Adding a new tool:

# In mcp_ahrefs/tools/my_new_tool.py
def my_new_tool(param: str) -> dict:
    """Description of what this tool does."""
    # Implementation
    return {"result": "processed"}

# In mcp_ahrefs/tools/__init__.py
from .my_new_tool import my_new_tool
example_tools.append(my_new_tool)

Testing with MCP Inspector:

# From the project root
uv run mcp dev mcp_ahrefs/server/app.py

Debugging a tool:

  1. Check the SQLite logs for error messages

  2. Run with --log-level DEBUG for verbose output

  3. Test directly with MCP Inspector to see parameter handling

Important Implementation Notes

  • The server uses the standard MCP SDK (from mcp.server.fastmcp import FastMCP)

  • Function signatures are preserved through careful decorator implementation

  • The register_tools() function in server/app.py handles all decorator application

  • Tools should return JSON-serializable Python objects (dict, list, str, int, etc.)

Configuration

Configuration files are stored in platform-specific locations:

  • macOS: ~/Library/Application Support/mcp_ahrefs/

  • Linux: ~/.local/share/mcp_ahrefs/

  • Windows: %APPDATA%/mcp_ahrefs/

Configuration Options

  • log_level: Logging level (INFO)

  • log_retention_days: Days to retain logs (30)

  • server_port: HTTP server port (3001)

Development

Project Structure

mcp_ahrefs/
├── mcp_ahrefs/
│   ├── config.py              # Platform-aware configuration
│   ├── server/
│   │   └── app.py             # FastMCP server with decorators
│   ├── tools/                 # Your MCP tools
│   ├── decorators/            # SAAGA decorators
│   └── ui/                    # Streamlit admin UI
├── tests/                     # Test suite
├── docs/                      # Documentation
└── pyproject.toml            # Project configuration

Adding New Tools

  1. Create a new Python file in mcp_ahrefs/tools/

  2. Define your tool function

  3. Import and register it in server/app.py

Example:

# mcp_ahrefs/tools/my_tool.py
def my_tool(message: str) -> str:
    """Example MCP tool."""
    return f"Processed: {message}"

# The server will automatically apply SAAGA decorators

Running Tests

pytest tests/

Code Quality

This project uses several code quality tools:

# Format code
black mcp_ahrefs/
isort mcp_ahrefs/

# Lint code
flake8 mcp_ahrefs/
mypy mcp_ahrefs/

SAAGA Decorators

This server automatically applies three key decorators to your MCP tools:

  1. Exception Handler: Graceful error handling with logging

  2. Tool Logger: Comprehensive logging to SQLite database

  3. Parallelize: Optional parallel processing for compute-intensive tools

Logging

Logs are stored in a SQLite database with the following schema:

  • timestamp: When the tool was called

  • tool_name: Name of the MCP tool

  • duration_ms: Execution time in milliseconds

  • status: Success/failure status

  • input_args: Tool input arguments

  • output_summary: Summary of tool output

  • error_message: Error details (if any)

Contributing

  1. Fork the repository

  2. Create a feature branch

  3. Make your changes

  4. Add tests for new functionality

  5. Run the test suite

  6. Submit a pull request

License

This project is licensed under the MIT License - see the LICENSE file for details.

Support

For issues and questions:

  • Create an issue on GitHub

  • Check the documentation in the docs/ directory

  • Review the test suite for usage examples

Acknowledgments

Available Tools

6 tools
calculate_fibonacciB

Calculate the nth Fibonacci number.

This is a more computationally intensive example that demonstrates
how tools can handle more complex operations.

Args:
    n: The position in the Fibonacci sequence (must be >= 0)
    
Returns:
    Dictionary containing the Fibonacci number and calculation info
ParametersJSON Schema
NameRequiredDescriptionDefault
nYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

B3.4/5.0
Behavior2/5

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

With no annotations provided, the description carries full burden for behavioral disclosure. It mentions computational intensity but doesn't address performance characteristics, error handling, input validation beyond the n>=0 constraint, or system impact. Significant behavioral gaps remain.

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?

Well-structured with purpose statement, context note, and clear Args/Returns sections. The 'computationally intensive' sentence could be more integrated but doesn't significantly detract from overall efficiency.

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?

For a single-parameter mathematical function with output schema, the description covers basics adequately but lacks context about performance trade-offs, typical use cases, or how it differs from similar computational tools. The presence of an output schema reduces but doesn't eliminate the need for more operational context.

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

Parameters4/5

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

With 0% schema description coverage and only 1 parameter, the description fully compensates by clearly explaining n as 'position in the Fibonacci sequence' with the constraint 'must be >= 0'. This adds essential meaning beyond the bare schema.

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

Purpose5/5

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

The description clearly states the tool's purpose with specific verb ('calculate') and resource ('nth Fibonacci number'), distinguishing it from siblings like echo_tool or get_time. It precisely defines what mathematical operation it performs.

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?

No guidance is provided about when to use this tool versus alternatives like simulate_heavy_computation or process_batch_data. The description mentions it's 'computationally intensive' but doesn't specify appropriate contexts or exclusions.

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

echo_toolA

Echo back the input message.

This is a simple example tool that demonstrates basic MCP tool functionality.
It will be automatically decorated with SAAGA decorators for exception handling
and logging.

Args:
    message: The message to echo back
    
Returns:
    The echoed message with a prefix
ParametersJSON Schema
NameRequiredDescriptionDefault
messageYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A3.7/5.0
Behavior3/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the tool will be 'automatically decorated with SAAGA decorators for exception handling and logging,' which adds useful context about error handling. However, it doesn't disclose performance characteristics, rate limits, or other behavioral traits beyond basic functionality.

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?

The description is appropriately sized and well-structured with clear sections (purpose, context, args, returns). Every sentence earns its place, though the SAAGA decorator explanation could be considered slightly extraneous for a simple tool description. It's front-loaded with the core functionality.

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

Completeness4/5

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

Given the tool's simplicity (single parameter, no annotations, but has output schema), the description is reasonably complete. It explains what the tool does, documents the parameter, and describes the return value. The output schema existence means the description doesn't need to fully explain return values, but it still provides helpful context about the prefix addition.

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

Parameters4/5

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

The schema description coverage is 0%, so the description must compensate. It explicitly documents the single parameter ('message: The message to echo back') and provides return value information ('The echoed message with a prefix'), adding meaningful semantics beyond what the bare schema provides. This adequately compensates for the lack of schema descriptions.

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

Purpose5/5

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

The description clearly states the tool's purpose with a specific verb ('echo back') and resource ('input message'), distinguishing it from siblings like 'calculate_fibonacci' or 'get_time' which perform different operations. The first sentence directly explains what the tool does without being tautological.

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 provides no guidance on when to use this tool versus alternatives like 'simulate_heavy_computation' or 'process_batch_data'. It only mentions it's a 'simple example tool' but doesn't specify appropriate use cases or exclusions, leaving the agent without context for tool selection.

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

get_timeA

Get the current time.

Returns the current time in a human-readable format.

Returns:
    Current time as a string
ParametersJSON Schema
NameRequiredDescriptionDefault

No parameters

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A3.5/5.0
Behavior3/5

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

No annotations are provided, so the description carries the full burden. It discloses that the tool returns the current time in a human-readable format as a string, which is basic behavioral information. However, it lacks details on potential traits like timezone handling, latency, or error conditions. The description does not contradict annotations, but it provides minimal behavioral context beyond the core functionality.

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

Conciseness5/5

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

The description is appropriately sized and front-loaded: it starts with the core purpose ('Get the current time.'), followed by return format details. Each sentence earns its place by clarifying the output without redundancy. It is concise and well-structured for a simple tool.

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

Completeness4/5

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

Given the tool's low complexity (0 parameters, no annotations, but has an output schema), the description is complete enough. It explains what the tool does and the return format, and since an output schema exists, it does not need to detail return values further. However, it could improve by adding minor context like timezone information, but it meets most needs for this simple tool.

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

Parameters4/5

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

The tool has 0 parameters, and the input schema has 100% description coverage (though empty). The description does not need to add parameter semantics, as there are none. According to the rules, for 0 parameters, the baseline is 4, as the description adequately covers the lack of inputs without unnecessary detail.

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 clearly states the tool's purpose: 'Get the current time' and 'Returns the current time in a human-readable format.' This is a specific verb ('Get') and resource ('current time'), but it does not explicitly distinguish from sibling tools like 'calculate_fibonacci' or 'random_number', which serve different purposes. The purpose is unambiguous but lacks sibling differentiation.

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 provides no guidance on when to use this tool versus alternatives. It does not mention any context, prerequisites, or exclusions for usage. With sibling tools like 'echo_tool' or 'simulate_heavy_computation', there is no indication of when 'get_time' is preferred, leaving the agent without usage instructions.

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

process_batch_dataA

Parallelized version of process_batch_data.

This function accepts a list of keyword argument dictionaries and executes process_batch_data concurrently for each set of arguments.

Original function signature: process_batch_data(items: List, operation: str)

Args: kwargs_list (List[Dict[str, Any]]): A list of dictionaries, where each dictionary provides the keyword arguments for a single call to process_batch_data.

Returns: List[Any]: A list containing the results of each call to process_batch_data, in the same order as the input kwargs_list.

Original docstring: Process a batch of data items.

This is an example of a tool that benefits from parallelization.
It will be automatically decorated with the parallelize decorator
in addition to exception handling and logging.

Args:
    items: List of strings to process
    operation: Operation to perform ('upper', 'lower', 'reverse')
    
Returns:
    Processed items with metadata
ParametersJSON Schema
NameRequiredDescriptionDefault
kwargs_listYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A3.5/5.0
Behavior3/5

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

With no annotations provided, the description carries the full burden. It discloses that the tool is 'automatically decorated with the parallelize decorator in addition to exception handling and logging,' which adds valuable behavioral context beyond basic functionality. However, it lacks details on error handling specifics, performance characteristics, or resource usage.

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

Conciseness3/5

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

The description is appropriately sized but not optimally structured. It front-loads the parallelization aspect but includes redundant information like the original docstring, which could be condensed. Some sentences (e.g., about automatic decoration) earn their place, but others could be more streamlined.

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

Completeness4/5

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

Given the tool's complexity (parallel processing), no annotations, and an output schema present, the description is fairly complete. It covers purpose, parameters, returns, and behavioral traits like parallelization and logging. However, it could benefit from more details on error propagation or concurrency limits to be fully comprehensive.

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

Parameters4/5

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

Schema description coverage is 0%, but the description compensates well by explaining that `kwargs_list` is a list of dictionaries providing keyword arguments for calls to `process_batch_data`. It also references the original function's parameters (`items` and `operation`), adding meaning beyond the minimal schema. With only one parameter, this is above the baseline of 3.

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 clearly states this is a 'parallelized version' of `process_batch_data` that executes calls concurrently, which is a specific verb+resource combination. It distinguishes itself from the original function by emphasizing parallelization, though it doesn't explicitly differentiate from sibling tools like `simulate_heavy_computation`.

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

Usage Guidelines3/5

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

The description implies usage when parallelization is beneficial for processing multiple data batches, as noted in the original docstring. However, it doesn't provide explicit guidance on when to use this tool versus alternatives like `simulate_heavy_computation` or when not to use it (e.g., for single operations).

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

random_numberA

Generate a random number within a specified range.

Args:
    min_value: Minimum value (default: 1)
    max_value: Maximum value (default: 100)
    
Returns:
    Dictionary containing the random number and range info
ParametersJSON Schema
NameRequiredDescriptionDefault
min_valueNo
max_valueNo

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

A3.7/5.0
Behavior3/5

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

With no annotations provided, the description carries the full burden of behavioral disclosure. It mentions the return format ('Dictionary containing the random number and range info'), which adds value beyond the input schema. However, it doesn't cover aspects like whether the tool is deterministic, has rate limits, or requires specific permissions, leaving gaps in behavioral context.

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?

The description is appropriately sized and front-loaded, starting with the core purpose. The structured 'Args' and 'Returns' sections are efficient, but the repetition of default values in both the description and schema could be slightly streamlined. Overall, it's concise with minimal waste.

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

Completeness4/5

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

Given the tool's low complexity, 2 parameters, no annotations, and the presence of an output schema (which handles return values), the description is mostly complete. It covers the purpose, parameters, and return format adequately. However, it could improve by addressing behavioral traits like randomness characteristics or error handling for invalid ranges.

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

Parameters4/5

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

The description adds meaningful semantics beyond the input schema, which has 0% description coverage. It explains that 'min_value' is the 'Minimum value' and 'max_value' is the 'Maximum value', including default values, which compensates for the schema's lack of descriptions. Since there are only 2 parameters, this is sufficient for a high score, though it doesn't detail constraints like integer-only inputs.

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

Purpose5/5

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

The description clearly states the tool's purpose with a specific verb ('Generate') and resource ('random number'), and distinguishes it from siblings by focusing on random number generation rather than calculation, time retrieval, or data processing. It precisely communicates what the tool does without being vague or tautological.

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 provides no guidance on when to use this tool versus alternatives like 'calculate_fibonacci' or 'simulate_heavy_computation'. It lacks explicit context, exclusions, or comparisons with sibling tools, leaving the agent without usage direction beyond the basic purpose.

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

simulate_heavy_computationB

Parallelized version of simulate_heavy_computation.

This function accepts a list of keyword argument dictionaries and executes simulate_heavy_computation concurrently for each set of arguments.

Original function signature: simulate_heavy_computation(complexity: int)

Args: kwargs_list (List[Dict[str, Any]]): A list of dictionaries, where each dictionary provides the keyword arguments for a single call to simulate_heavy_computation.

Returns: List[Any]: A list containing the results of each call to simulate_heavy_computation, in the same order as the input kwargs_list.

Original docstring: Simulate a heavy computation task.

This tool demonstrates parallelization benefits by performing
a computationally intensive task that can be parallelized.

Args:
    complexity: Complexity level (1-10, higher = more computation)
    
Returns:
    Dictionary containing computation results
ParametersJSON Schema
NameRequiredDescriptionDefault
kwargs_listYes

Output Schema

ParametersJSON Schema
NameRequiredDescription
resultYes

TDQS

B3.3/5.0
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. It mentions 'parallelized' and 'concurrently,' which hints at performance benefits, but lacks details on behavioral traits like error handling, resource usage, rate limits, or whether it's read-only/destructive. The original docstring included in the description adds some context about simulating heavy computation, but overall disclosure is minimal for a tool with potential computational impacts.

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

Conciseness3/5

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

The description is moderately concise but includes redundant elements like the original docstring, which repeats information. It's front-loaded with key points but could be more streamlined by integrating the original details more efficiently without duplication.

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

Completeness4/5

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

Given the complexity (parallel computation tool), no annotations, and an output schema exists (implied by 'Has output schema: true'), the description is fairly complete. It covers purpose, parameters, and returns, but lacks behavioral context like performance implications or error handling, which would be beneficial for a tool of this nature.

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

Parameters4/5

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

Schema description coverage is 0%, but the description compensates well by explaining that 'kwargs_list' is a list of dictionaries where each provides keyword arguments for the original function, and it references the original signature with 'complexity: int.' This adds significant meaning beyond the bare schema, though it doesn't fully detail all possible keyword arguments or their constraints.

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 clearly states this is a 'parallelized version' that 'executes simulate_heavy_computation concurrently for each set of arguments,' which is a specific verb+resource combination. It distinguishes itself from the original function but doesn't explicitly differentiate from sibling tools like 'process_batch_data' or 'calculate_fibonacci,' which might also involve computation.

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

Usage Guidelines3/5

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

The description implies usage for parallelizing multiple calls to the original function, but doesn't explicitly state when to use this vs. alternatives like the original function or other sibling tools. No exclusions or specific contexts are provided, leaving usage somewhat ambiguous.

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. Dates show when Glama detected each change.

  1. 6 tool updates
    • First observedcalculate_fibonacci
    • First observedecho_tool
    • First observedget_time
    • First observedprocess_batch_data
    • First observedrandom_number
    • First observedsimulate_heavy_computation

TDQS

B3.2/5.0
Disambiguation2/5

Multiple tools have overlapping computational purposes that could cause confusion. calculate_fibonacci and simulate_heavy_computation both perform intensive calculations, while process_batch_data and simulate_heavy_computation both offer parallelized processing. The echo_tool and get_time are distinct but the computational tools lack clear boundaries.

Naming Consistency4/5

Most tools follow a consistent verb_noun naming pattern (calculate_fibonacci, echo_tool, get_time, process_batch_data, random_number, simulate_heavy_computation). The only minor deviation is 'echo_tool' using 'tool' as a suffix while others don't, but overall the naming is quite predictable.

Tool Count3/5

With 6 tools, the count is reasonable for a utility server, but feels borderline thin for a server named 'MCP Ahrefs' which suggests SEO/web analytics functionality. These generic utility tools don't align well with the implied domain, making the count feel mismatched to the server name.

Completeness2/5

For a server named 'MCP Ahrefs' (implying SEO/backlink analytics), there are significant gaps - no tools for domain analysis, backlink checking, keyword research, or any actual Ahrefs-like functionality. As a generic utility set, it lacks coherent coverage of any specific domain, making it incomplete for any focused purpose.

Maintenance

ActivityInactive
ResponsivenessSyncing

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