---
name: ariadnenexus
description: Sovereign quantitative valuation, secondary debt surveillance radar, OFAC sanctions screening, and institutional RWA clearing fee calculations via MCP and Machine Payments Protocol (HTTP 402).
metadata:
  version: 1.0.0
  provider: Ariadne Nexus
  website: https://ariadnenexus.com
  stripe_account: acct_1U0DiGBUlDB0w6hX
  mcp_url: https://ariadnenexus.com/mcp
  openapi_url: https://ariadnenexus.com/openapi.json
---

# Ariadne Nexus Agent Skill

Ariadne Nexus is an institutional quantitative reasoning engine, secondary debt surveillance radar, and Real-World Asset (RWA) clearing architecture accessible autonomously via Model Context Protocol (MCP) and HTTP 402 Machine Payments Protocol (MPP).

## Autonomous Provisioning

Provision API credentials and environment variables using the Stripe CLI:

```bash
stripe provision ariadnenexus
```

This returns a dedicated `nexus_live_...` developer credential, configured environment variables, and usage quotas.

## Model Context Protocol (MCP)

Connect to the remote MCP server:

- **Server Endpoint**: `POST https://ariadnenexus.com/mcp`
- **Specification**: JSON-RPC 2.0 over HTTP

### Available Tools

1. `get_cusip_valuation`: Real-time yield-to-maturity, European collar pricing, and fair value estimation for fixed income CUSIPs.
2. `screen_ofac_entity`: Sub-second forensic screening against OFAC SDN and global sanctions registries with cryptographic audit hashes.
3. `get_debt_radar`: Secondary debt surveillance, FINRA TRACE tape analysis, and Markov stress scoring.
4. `calculate_clearing_fee`: Computes institutional take-rates (bps) and bridge settlement tolls for prospective RWA transactions.
5. `provision_agent_key`: Autonomous self-provisioning of developer API keys.

## Machine Payments Protocol (HTTP 402)

Pay per call without API keys using `mppx` or any standard HTTP 402 client:

### Endpoints

- **Valuation**: `POST https://ariadnenexus.com/api/v1/mpp/valuation`
- **Sanctions Screening**: `POST https://ariadnenexus.com/api/v1/mpp/ofac-screen`
- **Debt Radar**: `POST https://ariadnenexus.com/api/v1/mpp/debt-radar`

### Example Invocation

```bash
mppx https://ariadnenexus.com/api/v1/mpp/valuation \
  -X POST \
  -H "Content-Type: application/json" \
  -d '{"cusip": "912828ZG8", "par_value": 1000000}'
```

### Accepted Payment Rails

- **Stripe Shared Payment Tokens (SPTs)**: Card payments via Stripe Link Agent Wallet (`link-cli`). Minimum: $0.50 USD.
- **USDC Stablecoin Micropayments**: Programmatic settlement over Base, Solana, or Tempo. Minimum: $0.01 USDC.