# DPX > DPX is a programmable stablecoin settlement rail with a 6-tier macro-intelligent stability oracle, ESG-aware fee redistribution, and agent-native pricing APIs. Built for institutional treasuries, sovereign wealth funds, and autonomous AI treasury agents. Deployed on Base mainnet (chainId 8453). No authentication required for pricing endpoints. DPX provides cross-border settlement infrastructure with the following fee structure: 0.85% core transfer fee, 0.40% FX conversion fee (cross-currency only), 0.00–0.50% ESG fee (live from oracle, formula: (100 - avgScore) / 200), and 0.01% fixed license fee. Typical all-in rate at ESG score 75 cross-border: 1.385%. All fees are enforced on-chain via the DPXSettlementRouter contract on Base. ## Getting Started - [Agent Quick Start](https://docs.untitledfinancial.com/agent-quickstart): The 5-step settlement loop — discover, score, quote, verify, execute - [Run the Oracles](https://docs.untitledfinancial.com/running): Start both oracles and verify they are live - [Protocol Manifest](https://stability.untitledfinancial.com/manifest): Machine-readable protocol description with capabilities, fee structure, and contract addresses - [OpenAPI Spec](https://stability.untitledfinancial.com/openapi.json): Full OpenAPI 3.0 schema for all Stability Oracle endpoints ## Pricing & Fees - [Fee Structure](https://docs.untitledfinancial.com/fees): Complete fee table with volume discount tiers, ESG tiers, and scenario examples - [Fee Schedule API](https://stability.untitledfinancial.com/fee-schedule): Live fee table - [Quote Endpoint](https://stability.untitledfinancial.com/quote?amountUsd=1000000&hasFx=true&esgScore=75): Live fee quote for $1M cross-border settlement at ESG score 75 - [Fee Verification](https://stability.untitledfinancial.com/verify-fees?amountUsd=1000000&hasFx=true): Verify off-chain quote matches on-chain router ## Oracle & Reliability - [Reliability Metrics](https://stability.untitledfinancial.com/reliability): Live uptime, stability score, peg deviation, confidence score - [Oracle Status](https://stability.untitledfinancial.com/api/status): Full raw output from the latest oracle run - [24h History](https://stability.untitledfinancial.com/api/history): Oracle history for trend analysis - [Health Check](https://stability.untitledfinancial.com/health): Liveness check ## API Reference - [Stability Oracle API](https://docs.untitledfinancial.com/api/stability-oracle): Complete endpoint reference for port 3000 - [ESG Oracle API](https://docs.untitledfinancial.com/api/esg-oracle): Complete endpoint reference for port 3001 ## Agent Integrations - [MCP — Claude Desktop](https://docs.untitledfinancial.com/integrations/mcp): Connect Claude via Model Context Protocol - [GPT Actions — ChatGPT](https://docs.untitledfinancial.com/integrations/gpt-actions): Add DPX as a Custom GPT Action - [LangChain — Python](https://docs.untitledfinancial.com/integrations/langchain): DPX tools for Python agents - [n8n — Workflow Automation](https://docs.untitledfinancial.com/integrations/n8n): DPX in no-code workflows ## Protocol - [Stability Oracle](https://docs.untitledfinancial.com/protocol/stability-oracle): 6-tier signal pipeline - [ESG Oracle](https://docs.untitledfinancial.com/protocol/esg-oracle): ESG scoring and fee redistribution - [Smart Contracts](https://docs.untitledfinancial.com/protocol/contracts): DPXSettlementRouter on Base mainnet ## Optional - [ESG Oracle Discovery](https://esg.untitledfinancial.com/llms.txt): ESG oracle — live E/S/G scores and ESG fee component - [AI Plugin Manifest](https://stability.untitledfinancial.com/.well-known/ai-plugin.json): Plugin manifest for agent framework discovery - [Financial Model](https://docs.untitledfinancial.com/financial-model): Buildout costs, margins, client scenarios, 10-year projections - [Investor Overview](https://docs.untitledfinancial.com/llms-investors.txt): Company overview for VC and institutional investors - [VC Discovery Index](https://docs.untitledfinancial.com/llms-vc.txt): Structured for LLM-assisted investor research and deal sourcing