Your First Micro Futures Fill: Automation Checklist

A market order that appears on a screen can hide several defects: the wrong account, an unintended expiry, duplicate submission, incorrect tick assumptions, missing protection, or a stale local position. Keep size at the minimum permitted level and make evidence—not profit—the objective. Run the test in a broker or provider environment that explicitly permits it and during a session appropriate to the product.

Separate every checkpoint. Webhook receipt proves message delivery. Validation proves the receiver understood it. Broker acknowledgement proves the order service accepted or registered a request. An execution report proves a fill. An account-position query proves resulting exposure. A successful end state requires all of them to reference the same event, account, and dated contract.

The calculation is multiplier times tick size: $5 times 0.25 equals $1.25. Ten MES ticks therefore represent $12.50 per contract before commissions and other costs. Do not copy that value to MNQ, M2K, MCL, MGC, or another micro product; each contract has its own specification. Obtain the current multiplier, tick, trading hours, and expiry terms from the listing exchange.

Your risk configuration should store prices and tick distances in unambiguous units. If a strategy says stop 20, define whether that means ticks, points, dollars, or a price. For MES, 20 ticks equal 5 index points and $25 per contract before costs. Test the conversion with a fixed example and show the computed amount to the operator before arming.

Continuous futures symbols are useful for analysis, but execution occurs in listed contracts. Record chart symbol, normalized root, broker-native contract ID, expiry month and year, and mapping review time as separate values. Retrieve the contract through the broker's supported reference data or a controlled catalog. Reject an unknown, expired, or ambiguous result instead of generating a symbol from memory.

CME's contract-roll education explains why activity moves between expiries. There is no single roll rule suitable for every strategy. Define whether the strategy follows volume, a fixed calendar, or another validated trigger. Before changing new-order routing, reconcile any open position and working order in the old contract. Never let an automatic map move an exit to a different expiry than the position.

Authenticate through the official API or platform connection and retrieve the intended account. Display its broker-native identifier, environment, and status. Read current positions and working orders. Resolve the micro contract and confirm the account is permitted to trade it. Check session and provider rules. If any state is unavailable or stale, stop rather than treating empty data as flat.

Set a hard maximum of one contract for the test, plus a total account-position cap that includes manual and other automated orders. Disable every unrelated strategy. Decide how the position will be exited and verify that the emergency broker-native interface works. A webhook cannot raise limits, change accounts, choose a different product, or bypass a stale-state lock.

The order record should include event ID, strategy, account, contract, side, quantity, order type, applicable price, risk-decision result, and timestamp. Move it to submitting atomically so two workers cannot send the same event. Include an API-supported client tag when available, while retaining local persistence as the primary deduplication record.

Classify the immediate result as acknowledged, rejected, rate-limited, transport-failed, or unknown. A timeout is unknown because the broker may have accepted the order before the response was lost. Query current orders and positions or wait for the supported execution stream to resolve it. Never send a replacement merely because a local request timer expired.

Record execution identifier, fill quantity, fill price, and broker timestamp. Handle partial fills by updating cumulative and remaining quantity without declaring completion early. Calculate observed slippage against the chosen benchmark only after defining that benchmark; market orders do not guarantee a price. Report commissions and account fees separately when the broker provides them.

Next, query or consume the account-position state. If a one-contract buy from flat does not produce the expected long position, stop automation and investigate other orders, prior exposure, or missing events. Do not infer flatness from a completed exit command. Confirm zero position and no working protective or entry orders before declaring the test closed.

With the strategy disarmed, restart the receiver and broker adapter. It should load durable intent, reconnect, retrieve supported orders, fills, and positions, and reach the same final conclusion as before shutdown. Test a duplicate of the original event; it should be recognized without another order. Test an invalid expiry, excessive quantity, disconnected stream, and expired authorization.

Only consider scaling after multiple reconciled sessions with no unexplained transitions. Increase one dimension at a time and retain the same total exposure controls. Review contract roll and provider rules before later tests. Measure alert-to-receipt and order-state timings for operations, but do not turn a small sample into a latency promise. The strongest first fill is boring, bounded, and fully reproducible.