Size-aware pre-trade gate

Stop a Polymarket bot when the requested size does not fit the public book.

Pass side, notional_usd, max_slippage_bps and policy context before trade(). Do Not Act compares the requested action to live public-book capacity and returns a stop/go verdict with reason codes.

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Example check

curl -fsS "https://donotact.com/v1/preflight/polymarket/540817?intent=enter&side=buy_yes&notional_usd=100&max_slippage_bps=150&policy=conservative" \
  -H "X-API-Key: demo"

The response includes decision, component_scores, safe_operating_limits, liquidity_confidence_score, and blocking/warning reason codes.

Where to place it

Put the gate after your signal chooses a market and intended size, but before order construction, FOK submission, quote publication or wallet/capital release.

What it is not

It is not position sizing, alpha, profit prediction, or execution guarantee. It is a maintained fail-closed guard-clause for capital-moving agents.