# Spiral Stake > Leverage-aware yield router on Ethereum mainnet and Robinhood Chain, powered by Morpho. Discover leveraged-yield ("looping") strategies over yield-bearing collateral, preview positions, and get UNSIGNED transactions to open, manage, and close leverage. Non-custodial: the service only builds transactions — your wallet signs them. It never signs, sends, or holds keys. ## Model Context Protocol (MCP) Agents should connect here. Streamable HTTP transport; works with any MCP-compatible client (Claude, Cursor, etc.). - [MCP endpoint](https://api.spiralstake.xyz/mcp): Streamable HTTP MCP server. Tools: `list_strategies`, `get_strategy`, `get_prices`, `simulate_leverage`, `build_leverage_tx`, `build_manage_tx`, `get_positions`. Pass `chainId` (1 = Ethereum, 4663 = Robinhood Chain) to target a chain; default is Ethereum. - [MCP server manifest](https://spiralstake.xyz/.well-known/mcp.json): machine-readable server descriptor. ## Read API (REST) The same data over plain HTTP, for non-MCP clients. - [OpenAPI spec](https://api.spiralstake.xyz/openapi.json): full REST schema. - [Strategies](https://api.spiralstake.xyz/v1/strategies): eligible leveraged-yield strategies with raw risk facts (collateral/borrow APY, leverage ladder, oracle type, exit liquidity, LTVs). Add `?chainId=4663` for Robinhood Chain. - [Health](https://api.spiralstake.xyz/health): service + supported-chain status. ## What agents can do - Rank strategies by leveraged APY, oracle safety (nav vs market), exit liquidity, and LTV headroom — every number is a raw, unit-labeled fact (opinions are namespaced under `spiralHints` with their thresholds). - `simulate_leverage` returns a deterministic position preview (leverage, effective LTV, expected APY, price impact) with no wallet required. - `build_leverage_tx` / `build_manage_tx` return `{ approvals, tx }` for the user's own wallet to sign. Approvals are scoped to the exact contract; swaps carry a slippage floor. Always simulate first and rebuild if `meta.expiresAt` has passed. ## Links - [App](https://app.spiralstake.xyz): the Spiral Stake web app. - [Website](https://spiralstake.xyz): overview and docs. ## Notes - Numbers are a snapshot (`asOf`); they move with market prices. - This is not financial advice.