DEVELOPER DOCS · LAST UPDATED OCTOBER 2026

ACCRUE MCP Server

Model Context Protocol (MCP) server that lets AI agents access live yield data and transact from their own wallets.

ACCRUE provides a public Model Context Protocol (MCP) server that lets any MCP-compatible AI agent interact programmatically with its stablecoin yield optimization platform. Connect Claude, ChatGPT Desktop, Cursor, Windsurf, or another MCP client to access live vault and portfolio data, get recommendations, and prepare deposits and withdrawals.

ACCRUE never signs transactions, holds keys, or holds funds. Transaction tools return unsigned transactions for the agent’s own wallet to sign, keeping the agent in full control.

Endpoint

https://accrue.cc/mcp

Transport: HTTP (JSON-RPC 2.0)
Protocol Version: 2024-11-05
Authentication: None required

What you can do

Access 19 tools through the MCP server.

Stablecoin Yield Index (SYX)

• get_syx_value — current SYX value and 7, 30 and 90-day averages
• get_syx_methodology — how the index is weighted and built
• get_syx_components — live per-component APY, TVL and weight
• get_syx_history — historical SYX series

Vaults and portfolios

• list_vaults, get_vault_details, compare_vaults, search_vaults — live APY, TVL, risk and chain for every vault
• list_model_portfolios, get_portfolio_details — the model portfolios and their allocations

Decisions

• recommend_strategy, calculate_yield, get_platform_info, search

Transactions

• list_vault_contracts — the vault contracts on a chain, read live from the ACCRUE Registry
• prepare_transaction — a deposit or withdrawal for the agent’s own wallet, unsigned
• build_user_operation, submit_user_operation, get_transaction_status — the USDC-gas path, below

Deposits and withdrawals

prepare_transaction returns two options for executing the same action. The agent pays its own network fees in either case:

• Pay gas in ETH — standard transactions sent from the agent’s own address. Always available.
  Each transaction is simulated first and includes a gas limit.
• Pay gas in USDC (Base and Ethereum) — a single ERC-4337 user operation with gas paid in USDC through Circle’s paymaster, so no ETH is needed. A one-time EIP-7702 authorization delegates the agent’s address to a standard account contract (Simple7702Account) without changing the address. This matters because ACCRUE positions remain tied to the depositing address.

1. prepare_transactiondeposit 25 USDC into acrAAVE on Base, for my address
   • eth_pathplain transactions, gas paid in ETH
   • usdc_patha USDC permit to sign, plus a one-time EIP-7702 authorization
2. build_user_operationwith the draft and, for USDC, the signed permit
   • the user operation to sign
3. submit_user_operationwith the signature
4. get_transaction_statussuccess, transaction hash, who paid the fee and how much

The USDC option displays a gas cost ceiling before signing, showing the maximum the operation can cost. Any unused prefund is refunded, and the USDC allowance granted to the paymaster is reset to zero in the same operation.

Connect to Claude Desktop

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

{
  "mcpServers": {
    "accrue": {
      "url": "https://accrue.cc/mcp",
      "transport": "http"
    }
  }
}

Restart Claude Desktop. ACCRUE tools will appear in the tool picker.

Connect to Cursor / Windsurf / Zed

Most MCP-compatible editors accept the URL directly through their MCP settings UI.

Look for "Add MCP server" and enter https://accrue.cc/mcp as the URL.

Use programmatically

The server speaks standard MCP JSON-RPC. Example: list all vaults.

curl -X POST https://accrue.cc/mcp \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "list_vaults",
      "arguments": {}
    }
  }'

Example Requests from AI Agents

• "What’s the highest yield on ACCRUE for a conservative investor?" → recommend_strategy
• "Compare the Aave and Gauntlet Frontier vaults on Base" → compare_vaults
• "If I deposit $10,000 for 12 months, what would I earn?" → calculate_yield
• "Deposit 25 USDC into Aave on Base, paying gas in USDC" → prepare_transaction

Transaction Security

Transaction support is limited to preparing unsigned transactions for the agent’s own wallet to sign. ACCRUE never takes custody of funds.