Mid price: the point halfway between the best bid and the best ask. It is a reference, not a price anyone can trade at: a market buy fills at the ask and a market sell fills at the bid.
For exchanges: building an AI trading agent means owning models, data connectors, guardrails, advice-bait testing, a confirm step, and re-testing after every model update.
Buying means holding a vendor to the same bar.
Build or buy?
#AskHippo
BTC/USDT and BTC/USDC are two separate markets with two order books.
If BTC/USDT is 60,000 and USDC/USDT is 0.9995, BTC in USDC works out to 60,030.02. Same coin, different quote currency, different price. (Illustrative.)
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Your breakeven isn't your entry price. Fees come out on the way in and on the way out.
Buy at $84,000 with a 0.1% fee each side and price needs about $84,168 before you're flat. (Illustrative.)
Do you factor fees in?
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For exchanges: an MCP endpoint puts your venue inside someone else's AI app. An embedded agent keeps the conversation in yours.
MCP is cheaper to ship. Embedded keeps your brand, the confirm step and the advice boundary.
Which matters more to you?
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For exchanges: new traders rarely stall on the UI. They stall on a question the app doesn't answer.
Funded, never trades: "Spot, futures or convert?"
Opens a pair, leaves: "What will this cost me?"
Starts an order, abandons it: "Market or limit?"
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PnL is what you made or lost. ROE is that PnL as a share of your margin.
$420 profit on $4,200 margin is +10% ROE. Same trade at 1x is +1%. (Illustrative.)
Which one does your exchange show you first?
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For exchanges, two ways to embed a trading agent:
Thin-client SDK: a docked panel, native screens untouched, updates server-side.
Deep integration: wired into charts and order forms, updates tied to app releases.
Which would your team pick?
#AskHippo
Long 0.1 BTC at $60,000: price to $63,000 is +$300. Price to $57,000 is −$300.
Short 0.1 BTC at $60,000: price to $57,000 is +$300. Price to $66,000 is −$600.
A long's loss stops at what you paid. A short's has no ceiling. (Illustrative.)
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