Quantustik MCP server — S&P 500 market data
Quantustik is a market data service for the S&P 500 — prices, fundamentals, SEC filings, insider and Congress trades, macro indicators and market conditions — for investors and AI agents, through a dashboard, a REST API and an MCP server.
The hosted MCP server at https://quantustik.com/mcp (streamable-HTTP) needs
no API key. It serves nine tools:
Every value carries its source and as-of date. Quantustik publishes measured
data only, with no predictions and no recommendations.
Educational research only — not financial advice. Nothing here is a
recommendation to buy or sell any security.
Connect
Clients that support remote streamable-HTTP servers can point straight at
https://quantustik.com/mcp. Clients that only support local stdio servers
(Claude Desktop, Cursor, Windsurf and others) can use this package, described
below. Anonymous use is allowed under a per-IP hourly quota; a free key from
quantustik.com/developers raises it.
What this package is
A thin stdio proxy to Quantustik's hosted MCP server. It lets MCP clients
that only support local stdio servers (Claude Desktop, Cursor, Windsurf,
and others) reach the live, keyless, streamable-HTTP endpoint at
https://quantustik.com/mcp.
This package does not implement an MCP server itself, run any model
locally, or cache any data. It is a small wrapper around
mcp-remote pointed at our
hosted endpoint. Every tool call is forwarded live to quantustik.com and
answered from the same data and quota system as the hosted endpoint.
If your MCP client supports remote streamable-HTTP servers directly, you
don't need this package at all — just point it at https://quantustik.com/mcp.
This wrapper exists only for stdio-only clients.
The full tool catalog lives at
quantustik.com/developers.
Usage
Claude Desktop / Cursor / Windsurf
Add to your MCP client config (e.g. claude_desktop_config.json):
Command line
This starts a local stdio MCP server that proxies to
https://quantustik.com/mcp. Anonymous use is allowed under a per-IP hourly
quota; no setup required.
Optional: raise your quota with an API key
Get a free key at quantustik.com/developers,
then set it as an environment variable:
Environment variables
Any additional CLI arguments you pass are forwarded to the underlying
mcp-remote proxy (e.g. --debug).
How it works
npx @quantustik/mcp-server runs a small Node script
(bin/quantustik-mcp.js) that spawns
mcp-remote against
https://quantustik.com/mcp using the http-only transport (our endpoint
is streamable-HTTP, not SSE). mcp-remote speaks stdio to your MCP client
on one side and streamable-HTTP to our server on the other — this package
just pins the URL, transport, and optional auth header so you don't have to
remember them.
Source
Server implementation (Python, FastMCP): the hosted endpoint's source lives
in mcplafed/autoevolve
(app/mcp_server.py, server.json). This wrapper repo only contains the
thin npm client shown above.
Disclaimer
Market data returned by the Quantustik MCP server is for educational and
research purposes only and does not constitute personalized financial
advice. Always consult a qualified financial professional before making
investment decisions.
License
MIT — see LICENSE.