Borro MCP server

• Registry namemarkets.borro/borroverified in the MCP registry

The registry name sits under borro.markets. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

• Stateanswerschecked 2026-10-29
• Tools64
• Server calls itselfborro
• Server version1.0.0
• Protocol version2025-06-18

On 2026-10-29 the server answered initialize and tools/list without a sign-in. First answer in 175 ms.

• Its tools do every use case we checked: lend stock tokens to earn lending fees; borrow usdg against stock without selling it.
• Checked on 5 of the 7 days it takes to judge reliability.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

• INITE MCP scoreafter a weeka score needs 7 daily checks: 5 so far
• What an agent can do with it2 of 2 use cases
• Answeredmeasuring5 of the 7 daily checks it takes to print a share
• Median first answer339 ms
• Space in an agent's context≈ 23,605 tokensthe definitions of all its tools (75), which an agent carries on every turn
• Tool definitionsA · 100 of 100
• Typed results0 of 75 toolsdeclared outputSchema: results come typed, read once

• Every tool passes all six checks.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

• markets

  Every stock on Borro and the USDG vault: price, what is lent, borrowed and free to short, what lenders earn and what shorters pay a year (one number each, $BORRO included once it has been paid), the USDG borrowing rate against each stock…

• market

  One stock's full line from the shelf: rates, sizes, limits, open fee and its contracts.

• health

  For bots that watch for liquidation: every short and USDG loan of a wallet, worst first, with how much of its limit it uses (limit_used, 1 = Morpho can liquidate it now), health (1 / limit_used), the stock price that liquidates it, how…

• position

  Everything a wallet has on Borro: stock lent, shorts (owed, money held, the price it is closed for you at, and parts: how much of the stock's one short is the wallet's own, a pair's and a basket leg's), USDG loans, USDG lent, open pairs…

• trades

  Borro-wide recent shorts opened and closed, newest first.

• prices

  For each stock token on Borro: the stock's own price (its Chainlink feed while the market is open; Borro's weekend estimate and 95% band while it is shut), the token's executable buy and sell price on chain for $1,000 and $10,000 (what…

• bear_coins

  The bear coins directory: every coin launched on Pons from Borro with its own short, its stock, P/L, burns and fees.

• rules

  Borro's house rules, limits, what can go wrong, and every contract address with what it does, to verify on chain.

• open_short

  Unsigned transactions to short a stock from the wallet: approve the deposit if needed, then BorroShort.open (borrow the stock, sell it, hold the money plus the deposit). Priced now, with half a percent of slip allowed; simulated from the…

• close_short

  Unsigned transactions to close the wallet's short on a stock: buy back everything owed, return it, take out the money held (with a USDG top-up approval if it is under water). A wallet has one short per stock, shared by any pair or basket…

• supply

  Unsigned transactions to lend a stock to shorters (it earns lending fees) or USDG in the Borro USDG vault (it earns interest). With post: true, a stock is lent and posted in one step so USDG can be borrowed against it.

• withdraw

  Unsigned transaction to take back lent stock or USDG (part, or all with all: true). Stock on loan to shorters comes back once it is returned.

• borrow

  Unsigned transaction to borrow USDG against stock already lent and posted (supply with post: true first). The quote's rebate_estimate is what this loan puts in the wallet's weekly locker rebate.

• repay

  Unsigned transactions to repay USDG borrowed against a stock (part, or all with all: true).

• bind_builder

  Credits a bookrunner's code with the wallet's borrowing on Borro (Bookrunners): the bookrunner earns Borro's own fee on the interest the wallet pays, all of it for 12 months, half after; the wallet pays nothing more. Without signature…

• open_pair

  Unsigned transactions for a pair trade: buy and lend the long stock in your name (it earns lending fees while held), then short the other, approvals first. Priced now; simulated from the wallet in order.

• close_pair

  Unsigned transactions to close the wallet's newest open pair of these two stocks: the pair's own part of the short closed (a basket leg or a short of its own on the same stock stays open, listed in stays_open), the long's lent stock taken…

• buy_with_eth

  Unsigned transaction swapping the wallet's ETH for USDG or a stock on Uniswap, or through Route (route.fun) for a stock bought exact in when Route guarantees more (no Borro contract, no Borro fee), for the flows that need them.

• open_long

  Unsigned transactions for a leveraged long on a stock in one open: USDG margin plus a flash-borrowed debt buy the stock, which is lent (it earns lending fees) and posted, and the debt is borrowed against it in the wallet's own name…

• close_long

  Unsigned transaction closing all or part of the wallet's leveraged long on a stock: the stock is sold, the debt repaid, and the rest comes back in USDG.

• farms

  Borro's stock farms: a Uniswap v4 USDG/stock pool per stock, run by Borro's own hook, that lends what swaps do not need on Borro. For each farm: its size, what is kept for swaps and what is lent, its swap fee and squeeze fee now, the…

• farm_deposit

  Unsigned transactions to put USDG and a stock into its farm from the wallet: give usdg or stock (or both) and the other follows the farm's ratio (the feed's price for the first deposit, which sets the farm's price). Approvals of the exact…

• farm_withdraw

  Unsigned transaction to take part or all of the wallet's money out of a farm. Run from the wallet first to show what comes back now, and what comes as the vault's own shares because borrowers have it out (they keep earning and redeem on…

• weekend

  While the stock market is shut (Friday 8pm to Sunday 8pm New York, and holidays) the price feeds stop at their last print. For each stock: the paused price, Borro's weekend price and 95% band (low, high), its typical Monday gap and the…

• buy_cover

  Unsigned transactions to buy Monday-gap cover on a stock while the market is shut (until an hour before the reopen): side up pays if the first feed print after the reopen is more than the strike above the last print (cover for a short)…

• deposit_cover

  Unsigned transactions to put USDG into the gap cover pool, which backs every cover and keeps the premiums (less Borro's share) on top of the Steakhouse USDG vault's interest. Approve exactly the amount, then deposit. A big gap pays covers…

• withdraw_cover

  Unsigned transaction to take USDG out of the gap cover pool, an amount or all: true. Capital is locked while covers are live, from the first buy of a closure until Monday's settlement; withdraw during the week. Run from the wallet first…

• settle_cover

  Unsigned transaction settling a cover with the feed's first round at or after its reopen (found by walking back from the latest round), with what it pays the buyer. Anyone may send it; the payout always goes to the buyer. When that first…

• claim_cover

  Unsigned transaction taking USDG a settled or voided cover could not send to the wallet (it waits in the pool's owed); position shows owed_usdg.

• options

  One stock's options chain for this Friday and next (expiry Friday 8pm New York): per strike and side the series id, Borro's fair value (Black-Scholes from the stock's own measured volatility, a guide), delta, the best ask and bid (checked…

• write_option

  Unsigned transactions to write options from the wallet: post an ask at a premium (the collateral is locked now; it fills when a buyer takes it), or with order_id sell into that bid now and receive its premium less Borro's share. A call…

• buy_option

  Unsigned transactions to buy options from the best ask of a series (or a given ask with order_id), checked on chain: exact approval of the premium, then fillAsk with that premium as the most it may take. A fill takes the whole ask or…

• post_bid

  Unsigned transactions to post a bid for a series at a premium a share: the premium for all the shares is locked now in USDG (exact approval, then postBid) and goes to the writer who fills it, less Borro's share; the option tokens come to…

• cancel_order

  Unsigned transaction cancelling an ask or a bid: what it still locks goes back to its maker (an ask's collateral, a bid's USDG). Only the maker may, until the series expires; then anyone may.

• settle_series

  Unsigned transaction settling a series after its Friday 8pm New York expiry with the feed's last round at or before it, found by walking back from the latest round, once the proof holds (the next round printed after expiry, or it is the…

• claim_option

  Unsigned transaction burning the wallet's tokens of a settled series and taking what they pay: a call pays the stock's Borro vault shares, a put USDG (or the Steakhouse vault's shares with as_shares, for when the vault is short of free…

• release_collateral

  Unsigned transaction giving a writer back the lock of a settled series less what its written options pay, once: stock vault shares for a call, Steakhouse USDG vault shares for a put.

• credit_markets

  Agent Credit Lines: an agent posts its AI credits (Orbio CREDIT) and borrows USDG against them inside limits its owner sets once: a ceiling, a daily limit, a target LTV and an allowlist. markets: every market lines can open in now, each…

• credit_line

  One agent credit line (account) or the lines a wallet owns (owner: five a call, newest first; page 2 for the next five): its market, credits posted, USDG owed, LTV against its target, trigger and LLTV, a health word, what the agent can…

• holder_benefits

  Hold $BORRO. Borrow for less. What a wallet's $BORRO gets it on Agent Credit Lines, with or without lines. Keep $BORRO in the wallet that borrows (its own BorroLock lock counts as held) and its lines get, always: (1) up to half their…

• credit_open

  Unsigned transactions. Without account: open a line owned by the signing wallet for an agent (never the wallet itself), in a market credit_markets lists ("CREDIT", the default), post its credits and optionally borrow USDG at once (to the…

• credit_pay

  One unsigned borrow from a line straight to a payee on its allowlist (or its owner): the line's agent or owner signs it, the USDG goes from Morpho to the payee, and the line owes it until repaid. Checked as the line checks it: the…

• credit_gas

  Unsigned transactions that turn a line's credit into ETH in its agent's own wallet: make the agent's gas station if it has no code yet (anyone may; the station is the GasStationFactory's predict of the agent's wallet, never an address…

• credit_bill

  Pay a merchant's x402 bill (HTTP 402 Payment Required) in USDG on Robinhood Chain from an agent credit line. Give the 402's payment_required (its PAYMENT-REQUIRED header value, or its JSON body); the bill is its exact-scheme USDG option…

• credit_bill_header

  After credit_bill and the wallet's signature: the header the merchant reads (PAYMENT-SIGNATURE, or X-PAYMENT for x402 version 1), base64 JSON with the authorization and signature. Reads no chain and sends nothing: checks the authorization…

• credit_repay

  Unsigned transactions repaying a line's USDG debt from the wallet (anyone may): an amount, or amount "all"; exact USDG approval to the line first (all: the debt plus a hundredth of a percent for interest until it lands; repay takes only…

• credit_guardrails

  One unsigned configure() transaction for the line's owner, starting from the line's current settings: agent (or revoke_agent: true, a JSON boolean, at once; never the owner's own wallet), keeper ("borro", "none" or an address), ceiling…

• hold_open

  Unsigned transactions putting part of the wallet's Borro position on hold for one payee, up to a cap in USDG and until an expiry, while the shares keep earning (the vault's interest or lending fees, and the $BORRO Drip). vault: "USDG"…

• hold_pay

  The voucher for one x402 request (HTTP 402 offering the borro-hold scheme): the typed data the hold's payer signs, saying what it owes the merchant in all on the hold, counted on from the last voucher Borro's facilitator accepted (or what…

• hold_header

  After hold_pay and the payer's signature: the header the merchant reads (PAYMENT-SIGNATURE, or X-PAYMENT for x402 version 1), base64 JSON with the voucher { hold, cumulative, signature }. Reads no chain and sends nothing; recovers a…

• hold_status

  A hold on BorroHolds by its id, or the newest 10 a payer opened or that pay a payee: payer, payee, vault, mode, cap, paid, shares and their value in USDG, the cover, the expiry and the payee's 4-day grace after it, the terms fixed when it…

• hold_collect

  One unsigned transaction paying a hold's payee. Metered: settle with the latest voucher (cumulative and signature, or by default the last one Borro's facilitator accepted); until the expiry anyone may send it, in the 4-day grace after it…

• hold_end

  One unsigned transaction ending a hold: release (its payee or operator, any time) or, after the expiry and the payee's 4-day grace, reclaim (anyone). Either way every share left goes back to the payer. Until then the payer cannot end it…

• account_open

  Unsigned transaction opening the wallet's trade account (a TradeAccount, one per owner, made by TradeAccountFactory), naming an agent if given: an optional second key, never the wallet itself, that can open and close positions within its…

• account_trade

  Unsigned transactions to open or close a short or a leveraged long through the trade account: the same trades as open_short, close_short, open_long and close_long, with the account as the trader. action open_short (symbol, amount…

• trigger_set

  Unsigned transaction leaving an order on a position in the trade account, which anyone may execute once the price feed confirms it, for a tip. kind stop (stop-loss: a short's fires at or above price, a long's at or below), take…

• trigger_list

  The live triggers on a trade account (account, or the wallet's own): each with its condition in words, the stock's price now and how far it is from firing (in dollars and percent; a guard's LTV now and about where the price takes it to…

• trigger_cancel

  Unsigned transaction cancelling a live trigger on the trade account: the owner cancels any, the agent the ones it set. Simulated from the wallet.

• trigger_fire

  For executor agents: the triggers that hold right now by the account's own check (on one account, read on chain; or across every trade account as Borro's keeper publishes them at /triggers.json each minute while the market is open, with…

• account_status

  A trade account (account, or the wallet's own): its owner, its agent and the agent's limits (with today's loss against its daily loss budget and what that still lets the agent do: opens, deposit withdrawals and trigger-sets while it has…

The first 60 of 64, as the server listed them.