Accounts And Trading Environments

The selected account controls where an order goes. The data displayed on a chart does not change the account route automatically.

Use LocalPaper during Playback

Playback changes the market-data clock but does not change the selected account. In the current release-candidate build, HyperionX rejects order submissions, changes, and cancellations for selected Broker and Server Paper accounts while Playback is active. An external account can remain visible, but it cannot be mutated until Playback stops. Select LocalPaper before simulated order entry.

Account Types

Account type	Route	Capital at risk
LocalPaper / Hyperion Sim	HyperionX local simulator	No provider order is submitted.
Server Paper	Provider-managed paper or non-live route where supported	No real capital is intended, but behavior and availability depend on the provider.
Broker	External broker or exchange account	Yes. Orders can affect a real account.
Playback account	Playback-specific platform state	Playback supplies replay data; it is not the general order account used by Chart Trader.

Provider connections expose only the account types they support. For example, Hyperliquid market data exposes LocalPaper, while Rithmic can expose Broker accounts. Binance clean setup is currently locked and is not a supported account path.

Data Environment Versus Order Environment

Treat these as separate decisions:

1. Data source: live provider data, historical data, or Playback.
2. Order route: LocalPaper, Server Paper, or Broker.

A historical or replayed chart can coexist with a connected Broker account. HyperionX does not automatically switch the selected account to LocalPaper when Playback starts; the release-candidate safety guard instead rejects external-account order mutations while Playback is active.

Current Selection Behavior

• Chart Trader shows eligible accounts for the chart connection and can select a Broker account by default when one is available.
• MegaDOM routes to the account selected in its account control.
• Strategies can route to Server Paper or Broker accounts in real time when the selected provider supports it. During Playback, strategies require LocalPaper; external-account mutations are rejected.
• Changing the data source or timeframe does not prove that the account route changed.

Always read the visible account name and environment immediately before an order action.

Hyperion Sim Limits

Hyperion Sim is a simplified local execution model:

• A market order fills at an available immediate or latest simulated price.
• Limit and stop orders evaluate against incoming tick prices.
• An order fills as a complete order rather than through order-book partial fills.
• OCO siblings can be canceled after a fill.
• Per-order and per-unit commission settings are available.
• Provider fee estimates can be included where metadata is available.

Hyperion Sim does not currently model:

• queue position or order-book liquidity
• partial order fills
• configurable slippage
• provider latency
• buying-power rejection
• margin calls or liquidation
• exchange-specific outage and reject behavior

Simulation results are therefore training and validation evidence, not a promise of live execution quality.

Safe Playback Workflow

1. Start Playback and wait for the replay data to load.
2. Open the trading surface you intend to use.
3. Select the LocalPaper account associated with the intended connection.
4. Verify that the visible account is not Broker or Server Paper.
5. Place a very small simulated order and confirm it appears only in Hyperion Sim.
6. Recheck the account after changing instruments, connections, workspaces, or restored windows.

If a Broker or Server Paper account is selected, stop and change the account before continuing. Treat the rejection guard as a backstop, not as account selection. If an external working order already exists, stop Playback and reconcile it through the authoritative provider/account route before trying to change or cancel it.

Live-Route Checklist

Before using a Broker account:

• Confirm provider, account identity, environment, instrument, quantity, and order type.
• Confirm whether the provider supports order changes, stop orders, and native brackets.
• Understand that Chart Trader and MegaDOM submit directly after validation; they do not show a general manual-order confirmation dialog.
• Use provider-side limits and monitoring. HyperionX does not provide a universal manual-order max-size or daily-loss guard.
• Know how to cancel and flatten from the provider if the desktop disconnects.

See Connection Recovery for disconnect and unknown-outcome procedures.