Roundlot is an MCP server and a REST API with the same four tools. Agents use it to price and plan trades in NVDA, SPY and TSLA xStocks, the tokenized equities on X Layer, without running their own indexing.
| Tool | Price | Returns |
|---|---|---|
catalog | free | Supported symbols, addresses, venues, prices, networks |
session | $0.005 | US market session and what it means for the token's price |
quote | $0.01 | The fill for a buy or sell against live Uniswap v3 liquidity |
plan_trade | $0.02 | Ordered, unsigned transactions to execute the trade |
Endpoints
- MCP (streamable HTTP, stateless):
https://api.roundlot.0xo.in/mcp - REST:
https://api.roundlot.0xo.in/v1/<tool>, GET with query parameters or POST with a JSON body - Health:
https://api.roundlot.0xo.in/health
Two networks
Data, token metadata, pool state and trade calldata come from X Layer mainnet (eip155:196). Payments settle on X Layer testnet (eip155:1952) in USD₮0, so anyone can try every tool with faucet funds. See Networks.
What Roundlot never does
It never holds keys or funds, never signs or sends a trade, and never charges for a call it refuses.