Server Usdd

An MCP server for the USDD protocol across TRON, Ethereum, and BNB Smart Chain (plus internal testnets). Covers Vault/CDP, PSM, USDD Savings, token transfers, and protocol analytics.

Scope

Current implementation covers:

• Vault lifecycle: open, deposit collateral, mint USDD, repay, withdraw, close
• PSM lifecycle: inspect fees and routes, swap into USDD, swap out of USDD
• Savings lifecycle: inspect USDD Savings, deposit, withdraw
• Risk and monitoring for vaults: summaries, oracle status, collateral buffers
• Token preflight checks: balances, allowances, approvals
• Token transfers: two-step preview → confirm flow for TRX, TRC20, and EVM native/ERC20
• Protocol analytics: chain metrics, collateral prices, PSM route metrics, treasury, Smart Allocator, proof of reserve

Supported Networks

Network	Key	Notes
TRON	tron	TRON-native vault and PSM support
Ethereum	eth	Vault, PSM, USDD Savings
BNB Smart Chain	bsc	Mirrors ETH deployment structure
TRON Nile	tron_nile	Internal testnet deployment
Ethereum Sepolia	eth_sepolia	Internal testnet deployment
BSC Testnet	bsc_testnet	Internal testnet deployment

Prerequisites

• Node.js 20+
• Optional but recommended:
  • TRONGRID_API_KEY for more reliable TRON access
  • dedicated TRON_FULL_NODE and TRON_NILE_FULL_NODE
  • dedicated ETH_RPC_URL
  • dedicated BSC_RPC_URL
  • dedicated ETH_SEPOLIA_RPC_URL and BSC_TESTNET_RPC_URL

Developer

Installation

git clone https://github.com/decentralized-usd/mcp-server-usdd
cd mcp-server-usdd
npm install

Usage

npm start
npm run start:http
npm run dev

Configuration

Wallet Modes

The server supports two signing modes:

• Browser mode (recommended): connect a TronLink-compatible browser wallet and sign in browser.
• Agent mode: use encrypted local private keys stored in ~/.agent-wallet/.

For TRON writes, each Claude session shows a one-time signing-mode confirmation reminder before the first write.

You can also manage wallets via CLI or MCP tools:

CLI (agent-wallet)

The server uses @bankofai/agent-wallet for encrypted local wallet storage. On first startup it will automatically initialize ~/.agent-wallet/ and create a default wallet if none exists.

# Import an existing private key or mnemonic
npx agent-wallet add

# Generate a new wallet
npx agent-wallet generate

# List all wallets
npx agent-wallet list

# Switch active wallet
npx agent-wallet activate <wallet-id>

MCP Tools (runtime)

Tool	Description
get_wallet_address	Shows current address
connect_browser_wallet	Connect TronLink / browser wallet for signing
set_wallet_mode	Switch between browser and agent signing
get_wallet_mode	Show current signing mode and addresses
list_wallets	List wallets with per-family active status (tron and evm)
set_active_wallet	Switch active wallet by ID, optionally scoped by walletType (tron/evm)

Client Configuration

Claude Desktop

Add the following config to:

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "mcp-server-usdd": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@usdd/mcp-server-usdd"],
      "env": {
        "TRONGRID_API_KEY": "your_trongrid_api_key"
      }
    }
  }
}

Claude Code

Create .mcp.json in the project root directory:

{
  "mcpServers": {
    "mcp-server-usdd": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@usdd/mcp-server-usdd"],
      "env": {
        "TRONGRID_API_KEY": "your_trongrid_api_key"
      }
    }
  }
}

Cursor

Add to .cursor/mcp.json:

{
  "mcpServers": {
    "mcp-server-usdd": {
      "type": "stdio",
      "command": "npx",
      "args": ["-y", "@usdd/mcp-server-usdd"],
      "env": {
        "TRONGRID_API_KEY": "your_trongrid_api_key"
      }
    }
  }
}

For live RPC reads, the server also accepts TRON_FULL_NODE, TRON_NILE_FULL_NODE, ETH_RPC_URL, ETH_SEPOLIA_RPC_URL, BSC_RPC_URL, and BSC_TESTNET_RPC_URL. Protocol address lookup is Chainlog-backed: get_protocol_addresses uses a local Chainlog cache when fresh, refreshes from the on-chain Chainlog when needed, and falls back to a complete cache if live RPC is rate-limited. Chainlog root defaults are included for all supported networks and can be overridden with TRON_CHAINLOG_ADDRESS, TRON_NILE_CHAINLOG_ADDRESS, ETH_CHAINLOG_ADDRESS, ETH_SEPOLIA_CHAINLOG_ADDRESS, BSC_CHAINLOG_ADDRESS, and BSC_TESTNET_CHAINLOG_ADDRESS.

Tools

Wallet & Network

Tool	Description	Write?
get_supported_networks	List supported networks	No
set_network	Set default network for one family (tron/eth/bsc), supports aliases like mainnet, nile	Yes
get_network	Get per-family default networks	No
get_wallet_mode	Get active wallet signing mode (agent/browser)	No
set_wallet_mode	Switch active signing mode	Yes
connect_browser_wallet	Connect a browser wallet and activate browser mode	Yes
get_wallet_address	Show current address for the target network	No
list_wallets	List wallets and per-family active pointers (tron/evm)	No
set_active_wallet	Switch active wallet by ID (supports optional walletType)	Yes
import_wallet	Import private key/mnemonic into encrypted local store	Yes

Common

Tool	Description	Write?
get_protocol_addresses	Show Chainlog-backed protocol addresses, configured ilks, and PSM markets	No
get_chainlog_address	Resolve one Chainlog key such as MCD_USDD or MCD_JOIN_ETH_A	No
get_protocol_overview	Show live protocol ceilings and debt metrics alongside configured deployments	No
get_supported_ilks	List configured collateral types and PSM joins	No
get_native_balance	Read native balance (TRX / ETH / BNB)	No
get_token_balance	Read ERC20/TRC20 balance	No
check_allowance	Read ERC20/TRC20 allowance and compare against an optional amount	No
approve_token	Approve token allowance	Yes

Vault

Tool	Description	Write?
get_oracle_status	Inspect oracle and liquidation configuration for an ilk	No
get_user_vaults	List vault IDs for a wallet	No
get_vault_summary	Show collateral, debt, and liquidation metrics	No
analyze_vault_risk	Summarize risk with warnings	No
open_vault	Open a new vault via DSProxy	Yes
deposit_and_mint	Open-and-mint or add collateral and mint	Yes
mint_usdd	Draw more USDD from a vault	Yes
repay_usdd	Repay vault debt	Yes
withdraw_collateral	Withdraw collateral from a vault	Yes
close_vault	Wipe all debt and free collateral	Yes

PSM

Tool	Description	Write?
get_psm_status	Inspect PSM fees and enablement	No
get_psm_metrics	Get PSM swap metrics by route (fromToken/toToken/available/fee)	No
psm_swap_to_usdd	Swap gem into USDD	Yes
psm_swap_from_usdd	Swap USDD into gem	Yes

USDD Savings

Tool	Description	Write?
get_savings_status	Show USDD Savings metrics	No
deposit_savings	Deposit USDD into sUSDD	Yes
withdraw_savings	Withdraw USDD from sUSDD	Yes

Token Transfers

Two-step preview → confirm flow for safe asset transfers. The AI must present the transfer details to the user and wait for explicit confirmation before executing.

Tool	Description	Write?
prepare_token_transfer	Preview a native or token transfer; returns a confirmationId and transfer details for user review	No
confirm_token_transfer	Execute a previously prepared transfer after user has explicitly confirmed	Yes

Supports:

• TRX (TRON native)
• TRC20 tokens (USDD, USDT, WBTC, etc.)
• ETH / BNB (EVM native)
• ERC20 tokens on Ethereum and BSC

Protocol Metrics

Read-only analytics from mainnet data feeds.

Tool	Description	Write?
get_protocol_metrics	Aggregated USDD protocol metrics (mainnet)	No
get_chain_metrics	Chain-level metrics for tron, eth, or bsc	No
get_collateral_prices	Latest collateral highest-price data from website API	No
get_psm_metrics	PSM route metrics: fromToken, toToken, available liquidity, fees	No

Treasury

Tool	Description	Write?
get_treasury_summary	Latest USDD treasury report summary (mainnet)	No
get_jst_buyback_stats	JST buyback and burn statistics from treasury data	No

Smart Allocator

Tool	Description	Write?
get_smart_allocator_overview	Smart Allocator overview: debt, invested amount, earnings, APY	No
get_assets_breakdown	Invested-asset breakdown by protocol, network, or asset	No
get_proof_of_reserve	Proof-of-reserve style platform investment details	No
get_debt_overview	Debt overview grouped by network vault	No

Prompts

Prompt	Description
open_usdd_vault	Open a vault and verify post-trade risk
manage_vault_lifecycle	Run full vault lifecycle flows
use_psm	Use PSM with fee checks
use_savings	Use USDD Savings with inspection and verification
review_vault_risk	Explain risk for a vault
repay_and_close_vault	Repay and close with verification

Architecture

mcp-server-usdd/
├── src/
│   ├── core/
│   │   ├── chains.ts
│   │   ├── abis.ts
│   │   ├── tools.ts
│   │   ├── prompts.ts
│   │   ├── resources.ts
│   │   ├── browser-signer.ts
│   │   └── services/
│   │       ├── clients.ts
│   │       ├── contracts.ts
│   │       ├── protocol.ts
│   │       ├── vault.ts
│   │       ├── psm.ts
│   │       ├── savings.ts
│   │       ├── tokens.ts
│   │       ├── transfer.ts        ← token/native transfer (prepare + confirm)
│   │       ├── treasury.ts        ← treasury report and JST buyback stats
│   │       ├── smart-allocator.ts ← Smart Allocator analytics
│   │       ├── website-metrics.ts ← protocol metrics, chain metrics, collateral prices
│   │       ├── wallet.ts
│   │       └── utils.ts
│   ├── index.ts
│   └── server/
│       ├── server.ts
│       └── http-server.ts
└── build/

Notes

• Vault writes assume the configured wallet can sign on the target chain.
• Chain-dependent tools require an explicit network argument. If the user has not named a chain, ask which network to use before calling any chain-dependent tool; do not infer TRON or use set_network defaults as an implicit choice.
• ERC20/TRC20 flows often require approve_token first.
• Browser mode now supports real transaction signing on TRON networks (tron, tron_nile) via tronlink-signer (TronLink/TIP-6963 flow). EVM networks currently continue to use agent-wallet signing.
• deposit_and_mint is idempotent with respect to vault creation: it checks for an existing vault for the given ilk before opening a new one. If no vault exists, it submits two separate transactions — open then lockGemAndDraw — to avoid combined-tx reliability issues on TRON.
• Token transfers use a two-step flow: prepare_token_transfer returns a preview and confirmationId; confirm_token_transfer executes only after the user explicitly approves. Pending confirmations expire after 10 minutes.
• Protocol analytics tools (get_protocol_metrics, get_chain_metrics, get_collateral_prices, etc.) read from mainnet data feeds only — they do not reflect testnet state.
• TRON, ETH, BSC, and internal testnet deployments have similar protocol structure but different addresses and token decimals.
• This version intentionally excludes migration and auction actions so we can iterate the Vault + PSM + USDD Savings core first.

Security Considerations

• Private keys are encrypted and stored locally in ~/.agent-wallet/.
• Private keys are never returned by MCP tools.
• The optional AGENT_WALLET_PASSWORD is intended for automation and CI environments.
• Write operations should be treated as state-changing actions and reviewed carefully before execution.
• Vault prompts include risk-review steps so borrowing decisions are checked against current collateral health.
• Test on a safe environment or with small amounts before using mainnet-sized positions.
• Be cautious with large or unlimited token approvals when using approve_token.
• Never share local MCP client configuration files if they contain private keys or sensitive RPC credentials.

Example Conversations

Vault

• "What vault types are available on Ethereum?" → AI calls get_supported_ilks with network=eth and summarizes the supported vault collateral types.
• "Open a TRX-A/USDT-A/WBTC-A vault on Tron and mint 500 USDD" → AI uses open_usdd_vault: checks wallet, reviews oracle status, executes deposit_and_mint (auto-opens a new vault if none exists for that ilk), then verifies the new vault risk.
• "Am I close to liquidation on vault 123?" → AI calls get_vault_summary and analyze_vault_risk, then explains the health factor and collateral buffer.
• "Repay part of my vault debt on BSC" → AI uses manage_vault_lifecycle with action=repay: checks USDD balance and allowance, calls repay_usdd, then verifies the updated vault state.
• "Close my vault and withdraw the collateral" → AI uses repay_and_close_vault: checks debt, balance, allowance, calls close_vault, then confirms the vault state after repayment.

PSM

• "What are the current PSM fees on Ethereum?" → AI calls get_psm_status with network=eth and reports fee-in, fee-out, and whether swaps are enabled.
• "Show me available PSM liquidity for USDT on TRON" → AI calls get_psm_metrics with the PSM-USDT market and reports available amounts and fees for both directions.
• "Swap 10,000 USDT into USDD through the PSM" → AI uses use_psm: checks PSM status, then calls psm_swap_to_usdd and reports the transaction result.
• "Swap 5,000 USDD back to USDC on BSC" → AI calls get_psm_status, then executes psm_swap_from_usdd and reminds the user to re-check balances.

Token & Balances

• "What is my USDD balance on Tron?" → AI calls get_protocol_addresses to identify the USDD token address from Chainlog/cache, then calls get_token_balance.
• "Do I have enough allowance for the USDT PSM?" → AI calls check_allowance with the token and PSM spender, then suggests approve_token only if needed.
• "Send 100 USDD to TXxxx... on Tron" → AI calls prepare_token_transfer and displays the transfer preview (from, to, amount, balance). After the user confirms, AI calls confirm_token_transfer to execute.
• "Transfer 0.5 ETH to 0xabc..." → AI calls prepare_token_transfer for native ETH, presents the details, then waits for user approval before executing.

USDD Savings

• "What is the current USDD Savings status on Ethereum?" → AI calls get_savings_status and summarizes total assets, savings rate, and wallet shares.
• "Deposit 2,000 USDD into sUSDD" → AI uses use_savings: checks savings status, calls deposit_savings, then re-checks savings metrics.
• "Withdraw 500 USDD from sUSDD on BSC" → AI calls get_savings_status, executes withdraw_savings, and confirms the updated share balance.

Protocol Analytics

• "What are the overall USDD protocol metrics?" → AI calls get_protocol_metrics and reports total collateral, debt ceiling, and utilization.
• "Show me TRON chain metrics" → AI calls get_chain_metrics with chain=tron and summarizes collateral breakdown and USDD supply on TRON.
• "What are the latest collateral prices?" → AI calls get_collateral_prices and lists each collateral type with its current highest price.

Treasury & Smart Allocator

• "Show me the USDD treasury summary" → AI calls get_treasury_summary and reports reserve breakdown, collateral ratio, and recent changes.
• "How much JST has been bought back and burned?" → AI calls get_jst_buyback_stats and summarizes cumulative JST buyback volume and burn totals.
• "What is the Smart Allocator overview?" → AI calls get_smart_allocator_overview and reports total debt allocated, current invested amount, accumulated earnings, and APY.
• "Break down Smart Allocator investments by protocol" → AI calls get_assets_breakdown with dimension=protocol and lists each DeFi protocol with its allocated amount.
• "Show me the Smart Allocator proof of reserve" → AI calls get_proof_of_reserve and details each platform investment with amounts and verification status.
• "What does the Smart Allocator debt look like by network?" → AI calls get_debt_overview and summarizes debt positions grouped by TRON/ETH/BSC vaults.

License

MIT License Copyright (c) 2026 USDD