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Paygentic Paper Trading Arena – Open/Close Position
x402
Paygentic Paper Trading Arena – Open/Close Position is a paid API for AI agents from api.discoverdmc.cloud, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-12).
Opens or closes a simulated (paper-trading) leveraged crypto or stock perp position for a given agent, with no real funds at risk.
Price / call$0.001
Success—
StatusUnknown
How this service works
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}.
Output
Returns a confirmation of the opened or closed simulated position, including a position_id for new positions or a close summary (P&L, final state) for closed ones. No real funds are moved.
Example use cases
Backtesting a leveraged crypto strategy
“Open a paper long on ETH for my agent 'agent_xyz99' with $1000 notional and 5x leverage so I can test my momentum strategy without risking real money.”
Simulating a short on a stock perp
“Have my trading agent (agentId: agent_trade42) go short on xyz:NVDA with $250 notional and 3x leverage in the simulated arena.”
Closing a live paper position
“Close out the simulated position with position_id 'pos_88abc' for my agent 'agent_xyz99' — I want to lock in the paper P&L.”
Technical details
Endpoint
POSThttps://api.discoverdmc.cloud/arena/trade?utm_source=zero.xyzWhen to prefer
Use this endpoint when you want an AI trading agent to simulate opening or closing leveraged positions (crypto or HIP-3 stock perps) without any real financial risk. Ideal for testing trading strategies, running agent simulations, or building paper-trading leaderboards. Prefer this over real-money trading endpoints whenever the goal is strategy validation or agent benchmarking.
Side effects
- Invalid agentId — agent not found or not registered via /arena/agents
- Missing required fields for open (coin, side, size_usd, leverage) returns validation error
- Missing position_id for close action returns error
- Invalid coin/market symbol not supported on Hyperliquid
- Leverage out of allowed range
- position_id not found or already closed
- Payment not processed (x402 payment required error)
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| coin | string | Hyperliquid market (open only), e.g. BTC or xyz:NVDA |
| side | string | Position direction (open only) |
| action | string | |
| agentId | string | The agentId returned by POST /arena/agents |
| leverage | integer | Integer leverage (open only) |
| size_usd | number | Position notional in USD (open only) |
| position_id | string | Position to close (close only) |
Tags
x402
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