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CryptoMarketDataFetcher

Establish a connection to the CoinMarketCap service via this Python-based MCP agent to acquire current cryptocurrency valuation figures. Integrate immediate financial intelligence into applications using a streamlined programmatic interface.

Author

CryptoMarketDataFetcher logo

stevearagonsite

GNU General Public License v3.0

Quick Info

GitHub GitHub Stars 0
NPM Weekly Downloads 0
Tools 1
Last Updated 2026-02-19

Tags

coinmarketcappythonservermcpapistevearagonsite pythonservermcpcryptocurrency pricesconnecting coinmarketcap

MseeP.ai Security Assessment Badge](https://mseep.ai/app/stevearagonsite-pythonservermcp)

Python Server MCP - Digital Asset Pricing Utility

This module represents an MCP (Model Context Protocol) endpoint implemented in Python, furnishing access to digital currency quotes. It leverages the MCP framework to expose a consumable API interface for client consumption.

Containerization (Docker)

Build command for the Docker image: docker build -t mcp/crypto-data-fetcher -f Dockerfile .

Incorporate the following configuration into your mcp.json manifest:

{ "mcpServers": { "crypto-data-fetcher": { "command": "docker", "args": [ "run", "-i", "--rm", "-p", "8000:8000", "-e", "ENVIRONMENT", "-e", "COINMARKETCAP_API_KEY", "mcp/crypto-data-fetcher" ], "env": { "ENVIRONMENT": "PRODUCTION", "COINMARKETCAP_API_KEY": "your-secret-key-here", } } } }

Key Capabilities

  • Fetching live valuations for cryptographic assets.
  • Dynamic environment parameter management (e.g., dev, production, staging, local operation).
  • Seamless interface with the CoinMarketCap data source.
  • Deployment facilitated via Docker containers.

Prerequisites

  • A runtime environment supporting Python version 3.12 or newer.
  • The uv tool for dependency and environment management.
  • Docker (optional, required only for containerized execution).

Setup Procedure

bash

Obtain a local copy of the repository

git clone cd PythonServerMcp

Environment Initialization with uv

bash uv venv source .venv/bin/activate

Install Required Packages

uv sync

Configuration Management

  1. Establish a .env file in the primary directory containing environment variables:

ENVIRONMENT=DEV # Permitted values: LOCAL, DEV, STAGING, PROD COINMARKETCAP_API_KEY=your_actual_api_key_here

  1. Optionally, create distinct configuration files for specific execution contexts:
  2. .dev.env - For development iterations
  3. .staging.env - For staging deployment checks
  4. .prod.env - For production deployment parameters

Execution Instructions

Local Mode Operation

bash python main.py

This command initiates the MCP service, configuring it to accept requests over the standard input/output (stdio) stream.

Docker Deployment

bash

Image construction

docker build -t my-price-tool -f Dockerfile --platform linux/amd64 .

Container launch

docker run -it my-price-tool

Directory Layout

. ├── main.py └── src ├── init.py ├── core │ ├── common │ │ ├── crypto_schema.py │ │ └── schema.py │ ├── config.py │ ├── settings │ │ ├── init.py │ │ ├── base.py │ │ ├── development.py │ │ ├── environment.py │ │ ├── local.py │ │ ├── production.py │ │ └── staging.py │ └── utils │ ├── datetime.py │ ├── extended_enum.py │ ├── filename_generator.py │ ├── passwords.py │ ├── query_utils.py │ └── redis.py ├── mcp_server.py ├── resources │ ├── init.py │ └── coinmarketcap_resource.py ├── server.py ├── services │ ├── init.py │ └── coinmarketcap_service.py └── tools ├── init.py └── prices.py

Extending Functionality

Integrating Novel Tools into the MCP Endpoint

To embed an additional capability within the MCP server, adhere to these structured guidelines:

  1. Define the necessary routine within the src/__init__.py module.
  2. Register the newly defined tool within the primary main() execution flow.
  3. Provide comprehensive documentation using docstrings for the new utility.

Illustrative Example:

python @server.add_tool def calculate_asset_valuation(identifier: str, precision_level: int) -> str: """ Details the operation performed by this specialized routine.

Args:
    identifier: Explanation pertaining to the first input.
    precision_level: Contextual description for the second integer input.

Returns:
    A summary of the resulting output.
"""
# Implementation logic resides here
return final_output_string

WIKIPEDIA: The XMLHttpRequest (XHR) object provides a JavaScript interface designed to issue HTTP requests from a running web browser to a remote web server. This interface enables client-side scripts to fetch or submit data after the initial page load has completed, facilitating asynchronous communication. XMLHttpRequest is fundamentally linked to the concept of Ajax programming. Before its widespread adoption, server interaction predominantly relied upon navigating via hyperlinks or submitting HTML forms, actions which typically necessitated a full page refresh.

== Origin and Evolution == The foundational idea underpinning XMLHttpRequest was initially conceived in the year 2000 by the engineering teams behind Microsoft Outlook. This concept was subsequently integrated into the Internet Explorer 5 browser release (1999). Importantly, the initial implementation did not utilize the standardized XMLHttpRequest identifier. Instead, developers relied on invoking COM objects via ActiveXObject("Msxml2.XMLHTTP") and ActiveXObject("Microsoft.XMLHTTP"). By the time Internet Explorer 7 was released in 2006, comprehensive support for the standardized XMLHttpRequest designation had been universally adopted across all major browsers.

The XMLHttpRequest identifier has since become the established convention across dominant browser engines, including Mozilla’s Gecko layout engine (2002), Apple’s Safari 1.2 (2004), and Opera 8.0 (2005).

=== Standardization Efforts === The World Wide Web Consortium (W3C) published its initial Working Draft specification for the XMLHttpRequest object on April 5, 2006. A subsequent Working Draft for Level 2 was released by the W3C on February 25, 2008. The Level 2 revision introduced enhanced functionalities such as progress monitoring methods, support for cross-origin requests, and mechanisms for handling raw byte streams. Near the conclusion of 2011, the features delineated in the Level 2 specification were consolidated back into the main specification document. In late 2012, stewardship of the ongoing development transitioned to the WHATWG, which now maintains a living document utilizing the Web IDL specification language.

== Standard Operation Procedure == Executing a data transfer utilizing XMLHttpRequest generally entails a defined sequence of programmatic actions.

  1. Instantiate an XMLHttpRequest object by invoking its constructor:
  2. Invoke the open() method to stipulate the request modality (e.g., GET, POST), designate the target URI, and specify whether the operation should proceed asynchronously or synchronously:
  3. For operations designated as asynchronous, attach a handler function to monitor state transitions:
  4. Initiate the transmission by executing the send() method:
  5. Process responses within the state change listener. Upon successful data receipt from the server, the payload is typically accessible via the responseText attribute. Once the object completes the transaction cycle, its state transitions to 4, signifying the "done" status. Beyond these fundamental steps, XMLHttpRequest offers extensive controls over request formatting and response interpretation. Custom HTTP headers can be appended to the request to influence server behavior, and data payloads can be furnished to the server within the argument supplied to the send() call. The retrieved data stream can be deserialized from JSON into native JavaScript structures or processed incrementally as blocks arrive, circumventing the need to await the full document completion. Furthermore, transmissions can be halted preemptively or configured to terminate if a specified latency threshold is exceeded.

== Handling Inter-Domain Communication ==

During the nascent stages of the World Wide Web's development, it was observed that bypassing security limitations to brea

See Also

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