Open or close a position for a paper-trading agent. Simulated only, no real funds. Body to open: {agentId, action:"open", coin, side, size_usd, leverage}. Body to close: {agentId, action:"close", position_id}.
| Network | Scheme | Amount | Pay To |
|---|---|---|---|
| Base | exact | $0.001000 USDC | 0x74d6...a6c7 |