Nexus Finance

MCP server for the Nexus Finance API v1 — connect Claude Desktop, Claude Code, Cursor or any MCP-compatible client to financial contract analysis, risk analytics, market quotes and compliance case management.

What is this? Connect your Claude to Nexus Finance in 30 seconds. From that point, Claude can invoke contract audits, VaR/CVaR calculations, Basel III RWA, live market quotes, OFAC screening and compliance case management without leaving the conversation.

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Quick install

1. Get an API key

Log in at app.nexusquantum.finance → Settings → API Keys → create a key. Copy the nf_... key — shown only once.

2. Configure your client

Claude Desktop (macOS / Windows)

Edit ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows):

{
  "mcpServers": {
    "nexus-finance": {
      "command": "npx",
      "args": ["-y", "@nexus-finance/mcp"],
      "env": {
        "NEXUS_FINANCE_API_KEY": "nf_YOUR_KEY_HERE"
      }
    }
  }
}

Restart Claude Desktop. You'll see a 🔌 icon in the chat with the 8 Nexus Finance tools available.

Claude Code (CLI)

claude mcp add nexus-finance -- npx -y @nexus-finance/mcp
# Then set your key:
export NEXUS_FINANCE_API_KEY=nf_YOUR_KEY_HERE

Cursor

Edit ~/.cursor/mcp.json:

{
  "mcpServers": {
    "nexus-finance": {
      "command": "npx",
      "args": ["-y", "@nexus-finance/mcp"],
      "env": {
        "NEXUS_FINANCE_API_KEY": "nf_YOUR_KEY_HERE"
      }
    }
  }
}

3. Try it

In Claude Desktop, type:

Audit this contract with Nexus Finance and flag any high-risk clauses: «[paste contract text here]»

Claude will automatically call nexus_analyze and return a full risk assessment with severity-rated findings.

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The 8 tools

Tool	Description	Typical cost
nexus_analyze	Contract audit, commodity briefing, playbook or CCC compliance review. Zero Retention.	1–3 credits
nexus_var_calculator	Parametric VaR / CVaR at 90/95/99% confidence + 5-scenario stress test + VaR matrix	1 credit
nexus_rwa_calculator	Basel III Standardized Approach RWA across all asset classes + capital adequacy check	1 credit
nexus_market_quote	Real-time equity, FX or commodity quote (Alpha Vantage, 15-min cache)	Free
nexus_bulk_quotes	Up to 10 quotes in one call	Free
nexus_list_cases	List compliance cases (paginated, filterable by status)	Free
nexus_get_case	Full case detail with findings and counterparties	Free
nexus_create_case	Create a new compliance case	Free

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Environment variables

Variable	Required	Description
NEXUS_FINANCE_API_KEY	✅ Yes	API key starting with nf_
NEXUS_FINANCE_BASE_URL	❌ No	Override API base URL (default: https://app.nexusquantum.finance)

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What Nexus Finance covers

• Contract Intelligence — audit, redlining, AI drafting, obligation extraction, clause benchmark, RAG chat
• Regulatory Compliance — EMIR/REMIT XML, CBAM, EUDR, CSDDD, MiFID II alerts, CCC v4.2
• Risk Analytics — VaR/CVaR, RWA Basel III, stress tests, TBML watchdog, dynamic risk matrix
• Counterparty Due Diligence — KYB/UBO graph (GLEIF + OpenCorporates), OFAC screening, vessel IMO screening
• Case Management — 4-eyes workflow, multi-tenancy, audit export, rules engine

All analysis is Zero Retention — document text is never stored, logged or persisted.

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Links

• 🌐 Platform: nexusquantum.finance
• 📦 npm: @nexus-finance/mcp
• 🐍 Python SDK: nexus-finance-sdk
• 📚 TypeScript SDK: @nexus-finance/sdk

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License

MIT © Quantum Nexus Ventures FZCO