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MCP Massive

MCP Massive is an experimental Python Model Context Protocol server that connects LLM clients to Massive.com’s financial-data API. Its search, call and query tools support endpoint discovery, API requests, temporary SQLite storage and SQL analysis, with built-in financial calculations.

Explore the practical guide ↓

Independent OpenViST project profile, based on linked sources.

MCP Massive — OpenViST project profile in MCP & Tooling.
OpenViST project illustration. See the linked sources for product details.
Understand the project

Practical overview

When it fits

Use it when an MCP-compatible client needs a composable interface to Massive.com financial data, including workflows that combine API retrieval with SQL queries or built-in calculations.

Who it is for

  • Developers connecting an MCP-compatible LLM client to Massive.com market data.
  • Teams prototyping assistants that retrieve and analyze stock, options or cryptocurrency data.

Documented uses

  • Discover relevant Massive.com API endpoints and built-in financial functions.
  • Retrieve market data through API calls and store results in temporary SQLite tables.
  • Query stored results with SQL and apply supported return, moving-average or options calculations.
Before you choose

Requirements & limits

The repository documents a hosted server at mcp.massive.com and a locally installed option. Local setup requires a Massive.com API key. The project is open source under the MIT license.

  • The repository labels the project experimental and warns that breaking changes may occur.
  • The three-tool design combines endpoint search, API calls and SQL queries instead of providing one tool per endpoint.
  • Local installation requires Python 3.12+, Astral UV 0.4.0+ and a Massive.com API key.
  • STDIO is the default transport; SSE and streamable HTTP are also documented.
  • The in-memory SQLite store is for results handled during the server session, rather than a documented persistent database.

Check current requirements in the official documentation. Source-based guidance does not mean OpenViST has run or independently tested this project.

Source-based practical guide

Install and register MCP Massive with Claude Code

Install the server and add it as an MCP server in Claude Code.

Before you start

  • Python 3.12 or later
  • Astral UV 0.4.0 or later
  • A Massive.com API key
  • Claude Code installed and authenticated

Steps

  1. Install the server with the command below.

    Documented command
    uv tool install "mcp_massive @ git+https://github.com/massive-com/mcp_massive@v0.10.0"

  2. Register it with claude mcp add massive -e MASSIVE_API_KEY=your_api_key_here -- mcp_massive, supplying your API key.

  3. Start Claude Code with claude and use its MCP connection.

Expected outcome

Claude Code is configured to access Massive.com market-data tools through MCP Massive.

Guide limitations

  • The project is experimental and may have breaking changes.
  • The server requires a Massive.com API key. The documented instructions do not establish what data access that key provides.
Documentation 1 ↗
Evidence and transparency

Sources & review

Official repository ↗
Source record details
Source availability
Active
Sources checked
12 October 2026
Original website title
massive-com/mcp_massive · Official homepage title · retained in its source language
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