Syenite — DeFi MCP Server for AI Agents

The complete DeFi interface for AI agents via the Model Context Protocol (MCP). One endpoint covers lending rates across Aave, Morpho, Compound, and Spark; yield discovery; swap and bridge routing across 30+ chains; Polymarket prediction markets; position alerts; and a trust layer that verifies and simulates calldata before signing.

Live at syenite.ai · Docs at syenite.ai/docs

What It Does

Syenite is an MCP server that gives AI agents composable access to DeFi. Agents can query borrow and supply rates across every major lending protocol, find yield opportunities from lending and staking to Pendle fixed-rate markets, route swaps and bridges via LI.FI aggregation, read Polymarket prediction markets and signals, and set webhook alerts for health factor changes. All execution tools return unsigned calldata — the agent passes it to a connected wallet; Syenite never holds keys.

Quick Start

Add to your MCP client config (Claude Desktop, Cursor, or any MCP-compatible agent):

{
  "mcpServers": {
    "syenite": {
      "url": "https://syenite.ai/mcp"
    }
  }
}

Or run locally via stdio:

{
  "mcpServers": {
    "syenite": {
      "command": "npx",
      "args": ["-y", "@syenite/mcp"]
    }
  }
}

No API key required. Rate limited to 30 requests/minute per IP.

Call syenite.help on the live endpoint for the full tool catalogue.

Tools

Lending Rates

Lending Execution

Yield

Carry Trade

Swap & Bridge

Prediction Markets

Position Alerts

Wallet & Gas

Trust Layer

Supported Protocols

Supported Chains

Swap and bridge (via LI.FI): Ethereum, Arbitrum, Base, Optimism, Polygon, BNB Chain, Avalanche, zkSync, Linea, Scroll, Gnosis, Fantom, and 20+ more.

Lending rates, execution, and position monitoring: Ethereum, Arbitrum, Base (per protocol availability).

Wallet, gas, and trust simulation: Ethereum, Arbitrum, Base, BNB Chain.

How Execution Works

All execution tools (lending.supply, lending.borrow, lending.withdraw, lending.repay, swap.quote) return unsigned transactionRequest objects — calldata ready to sign. The recommended flow:

1. Get the calldata from the relevant tool.
2. Run tx.verify and tx.simulate to check the contract and preview effects.
3. Optionally run tx.guard to enforce value caps or allowlists.
4. Sign and submit from your own wallet.
5. Confirm with tx.receipt.

Syenite never holds private keys or custody of funds.

Agent Integration

Syenite is designed for agent-native DeFi workflows. Every tool is an atomic primitive: agents compose them to achieve outcomes like "find the best lending rate for wBTC, supply collateral, and set a health factor alert."

Syenite is a registered on-chain agent via ERC-8004 on Ethereum, Arbitrum, Base, and BNB Chain, and supports x402 machine-to-machine payments.

The server.json manifest includes a systemPrompt field that MCP clients can inject to orient the agent on Syenite's capabilities automatically.

Call syenite.help for the full capability overview including all tool parameters.

Yield Sources

Project Structure

syenite/
├── mcp/          # MCP DeFi server (live at syenite.ai/mcp)
├── docs/         # Architecture, planning, research, commercial
├── contracts/    # Solidity vault contracts (parallel build)
├── keeper/       # Keeper agent infrastructure
└── frontend/     # Minimal UI

Status

MCP server is live at syenite.ai/mcp. Swap/bridge across 30+ chains, multi-protocol lending rates and execution, yield discovery, Polymarket prediction markets, carry screening, position alerts, wallet/gas tools, and the tx trust layer are all in production.

npm: @syenite/mcp · Source: github.com/syenite-ai/syenite · Docs: syenite.ai/docs