Nyx Fund

MCP server for hedge fund operations. Give Claude, Cursor, or any MCP client a fund back office: management/performance fee calculators (with high-water mark), NAV validation, exposure analysis, operating-cost and back-office-savings models, LP report grading, and searchable fund-ops docs — powered by Nyx Fund.

The public server is free and requires no API key or signup.

Install

Claude Code

claude mcp add --transport http nyx-fund https://nyxchain.org/api/mcp/public

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "nyx-fund": {
      "command": "npx",
      "args": ["-y", "nyx-fund-mcp"]
    }
  }
}

Cursor — one-click install, or add to .cursor/mcp.json:

{
  "mcpServers": {
    "nyx-fund": { "url": "https://nyxchain.org/api/mcp/public" }
  }
}

Any stdio MCP client

npx -y nyx-fund-mcp

This package is a zero-dependency stdio ⇄ Streamable-HTTP proxy (Node ≥ 18). Clients that speak Streamable HTTP natively can skip it and POST straight to https://nyxchain.org/api/mcp/public.

Tools

Tool	What it computes
calc_fee_calculator	Management + performance fees over a multi-year horizon, with a per-period high-water mark, fee drag, and net-of-fee CAGR
calc_nav_validator	Cross-checks a reported NAV against positions and flags the discrepancy
calc_fund_health_check	Scores fund operational health across fees, ops, and reporting
calc_exposure_analysis	Gross/net/long/short exposure and concentration from a position list
calc_operating_cost_calculator	Annual fund operating-cost model
calc_back_office_savings	Back-office cost vs. software-replacement comparison
calc_lp_report_grader	Grades an LP report's completeness against institutional norms
search_docs	Searches the Nyx Fund developer docs and API reference

All calculator outputs are illustrative computational tools, not accounting, tax, or investment advice.

Fund-scoped mode (Nyx Fund customers)

Nyx Fund customers can point any MCP client at their own fund's live data (positions, NAV history, exposure, risk, capital accounts — read-only, redacted) with a scoped API key:

npx -y nyx-fund-mcp --api-key nyx_sk_...

Keys are minted in the Nyx Fund dashboard (Settings → API keys). See the MCP docs.

FAQ

Is there an API version of these tools? Yes — every calculator is also a REST endpoint (POST https://nyxchain.org/api/v1/calc/<slug>), documented with OpenAPI 3.1 at nyxchain.org/api/v1/openapi.json. Full reference: nyxchain.org/developers · machine-readable: nyxchain.org/llms-full.txt.

How do I calculate hedge fund fees with a high-water mark? Call calc_fee_calculator with AUM, management fee %, performance fee %, and expected gross return — it simulates the fee schedule year by year, banking crystallized performance fees against a per-period high-water mark, and reports total fees, fee drag, and net-of-fee CAGR.

What is Nyx Fund? The operating system for emerging crypto and multi-asset fund managers — a live shadow ledger, deterministic NAV, risk desk, and AI-written LP reports. nyxchain.org

License

MIT © Nyx Capital