quiver

Verifiable, deterministic risk computation for autonomous agents — cross-venue portfolio & liquidation, position sizing, execution-quality, options…

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What it can do

  • Perp Gate: Deterministic perpetual-futures risk. Given a position (entry, size, margin/leverage, maint-margin/maxLeverage), returns the exact liquidation price, the % adverse move to liquidation, effe
  • Portfolio Gate: Cross-venue portfolio risk. Given positions across venues [{venue, asset|symbol, side, size, entryPrice, margin|leverage, maxLeverage|marginTiers}] — OR just account: a Hyperliquid 0x
  • Size Gate: Deterministic position sizing (fractional Kelly) + risk-of-ruin. Given an edge — discrete {winProb, winLossRatio} or continuous {expectedReturn, volatility} — and a bankroll, returns the fr

What data it sees

Do you need an account

No: the server works without sign-in

Verifiable, deterministic risk computation for autonomous agents — cross-venue portfolio & liquidation, position sizing, execution-quality, options greeks/margin, LP/treasury/event risk — each answer carries a re-runnable, self-checked proof.

How to connect

How to connect quiver to Claude

The server address to paste into Claude settings:

https://quiver-risk-brain--craftify-world-ti.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect quiver to ChatGPT

The server address to paste into ChatGPT settings:

https://quiver-risk-brain--craftify-world-ti.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect quiver to Cursor

The server address to paste into Cursor settings:

https://quiver-risk-brain--craftify-world-ti.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (9)

Raw names from tools/list. Only developers need these.

perp_gateDeterministic perpetual-futures risk. Given a position (entry, size, margin/leverage, maint-margin/maxLeverage), returns the exact liquidation price, the % adverse move to liquidation, effective leverage, and (if a funding rate is given) the funding drag. Pass a Hyperliquid `symbol` (e.g. BTC) to auto-fill live mark price, funding, and max leverage. Includes a self-check proving the liquidation invariant. Call this BEFORE opening or sizing any leveraged perp position — an agent that knows its true liquidation distance does not get surprise-liquidated.
portfolio_gateCross-venue portfolio risk. Given positions across venues [{venue, asset|symbol, side, size, entryPrice, margin|leverage, maxLeverage|marginTiers}] — OR just account: a Hyperliquid 0x address, whose FULL live book (positions, margins, account equity, the venue's own liquidation prices) is pulled keylessly — returns TRUE net exposure per underlying, the leg that liquidates FIRST (the binding constraint), concentration (HHI / effective independent bets), and a correlated-crash stress counting how many legs liquidate SIMULTANEOUSLY when the market moves ±X% (correlation→1, the Oct-10-2025 crash regime). Pass Hyperliquid symbols to auto-fill live mark/leverage/margin-tiers. Self-checked (exposure reconciliation, per-leg liquidation invariant, nearest=min, monotone stress, venue-liquidation cross-check). Call to see whether independently-sized bets are secretly ONE bet that blows up together.
size_gateDeterministic position sizing (fractional Kelly) + risk-of-ruin. Given an edge — discrete {winProb, winLossRatio} or continuous {expectedReturn, volatility} — and a bankroll, returns the fractional-Kelly size and the probability of ever drawing down to 50/75/90%. The direct antidote to over-betting: full Kelly rides thin edges to ruin; this defaults to quarter-Kelly. Call before sizing ANY position.
exec_verifyDeterministic execution-quality / fair-fill verification. Given a completed swap (amountIn, amountOutRealized) plus either the pre-trade pool reserves+fee (constant-product) or a fair reference price, returns how many basis points the fill lost to ADVERSE execution (sandwich/MEV/stale) beyond the unavoidable fee + own price impact. Proves that a fill "within slippage tolerance" can still have been robbed. Call after a swap to detect being sandwiched.
options_riskPortfolio greeks (delta/gamma/vega/theta/vanna/volga) + SPAN-style scenario margin for an options book on Black-76. Given a list of legs {type, strike, expiryDays, iv, quantity(signed)} and a forward, returns aggregate greeks, first-order P&L per underlying move, and the worst-case loss over a price×vol grid. Self-checked: analytic greeks are verified against finite-difference derivatives of the repriced book. Call to size an options book's true net risk and margin — not the sum of per-leg notionals.
lp_riskForward-looking liquidity-provision risk. Given a realized price ratio (for impermanent loss) and/or a volatility + horizon (for expected divergence / LVR), returns the closed-form IL, the expected −σ²T/8 divergence, and — with a fee APR — the net forecast and breakeven volatility (the vol above which fees no longer cover the bleed). Self-checked: the IL closed form is verified at the token level against explicit constant-product amounts. Call before providing liquidity to see whether the fee yield can plausibly beat the divergence loss.
treasury_riskStablecoin / on-chain treasury risk. Given a book of positions [{asset, amountUsd, apyPct, venue, chain, pegTarget, depegProbAnnual}], returns concentration (Herfindahl by asset/venue/chain + breaches over a limit), depeg stress (explicit scenarios + a worst-single-depeg scan), weighted and risk-adjusted yield. Self-checked: HHI == Σw², weights sum to 1, depeg-loss identity. Call to size a treasury's real risk — issuer/venue/chain concentration and depeg exposure — not just its headline APY.
risk_attestBatch the content-hashes from many Quiver proof envelopes into ONE Merkle root plus per-item inclusion proofs, so a single on-chain anchor (your wallet's tx) attests all of them at once. Self-checked for completeness (every item verifies) and soundness (a non-member does not). Use to make a batch of risk computations cheaply and permanently attestable for audit/liability, without a chain write per computation.
event_volOptions-implied expected move around a scheduled event (FOMC/CPI/earnings/etc.). Given spot, ATM implied vol, and days-to-event, returns the 1σ move, the straddle-implied expected ABSOLUTE move (risk-neutral E|ΔS|), and the probability of exceeding move thresholds. Given the vol term structure across the event (ATM IV of the expiry before vs after), it ISOLATES the event's own priced-in move (the Wright event-day technique). Self-checked: the straddle equals a numerical integral of |S_T−S₀|. This is the magnitude that macro calendars (which give only date + impact label) leave out.