AfterFees

Connect Remote server

claude mcp add --transport http afterfees https://afterfees.xyz/mcp --header "Authorization: Bearer <YOUR_API_KEY>"

{
  "mcpServers": {
    "afterfees": {
      "url": "https://afterfees.xyz/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

{
  "servers": {
    "afterfees": {
      "type": "http",
      "url": "https://afterfees.xyz/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}

Settings > Connectors > Add custom connector
URL: https://afterfees.xyz/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools 28 found in our last check

• best_opportunities

  Ranked funding-rate arbitrage pairs (long one market, short another) with the net result after taker fees and order-book slippage at your size, max size, breakeven, settled 7-day replay, tier (actionable / watch) and reasons.

• coin_overview

  Funding rate of one coin on every exchange (rate, interval, APR, predicted, OI, volume, settled 7-day sum) plus its best pairs, net after fees and slippage at your size.

• pair_breakdown

  Full calculation of one pair: funding per leg and settlement count, taker fees, order-book VWAP and slippage per trade, carry, net, net if rates halve, breakeven, capacity, settled 7/30-day replay. pair_key comes from best_opportunities or coin_overview. Needs a Pro API token (A…

• funding_rates

  Current perpetual funding rates (gross, before costs). With base: that coin on every exchange, highest first. Without: the top N markets by absolute APR (OI filter applies).

• borrow_rates

  Margin borrow rates per coin and exchange (VIP0, current and 24 h / 7 d averages, limits, inventory) with the most negative perp funding: the two halves of a reverse spot-perp carry.

• fixed_vs_floating

  Pendle Boros markets: the fixed funding rate you can lock (net of Boros fees and fill at your size) against the term-matched floating benchmark, advantage, win rate, capacity. side=short locks an income, side=long locks a cost.

• execution_cost

  Taker fee + order-book slippage to buy or sell a given USD size of one coin on every exchange (perps and spot), cheapest first.

• basis_trades

  Spot or perp against a dated future held to delivery, on one exchange or across two (perp on one, future on another), and two same-day futures on different exchanges: net to expiry after fees and slippage at your size, net APR, basis APR, max size, tier and reasons.

• transfer_routes

  Buy a coin on one exchange, withdraw it on a network both exchanges share (same chain and contract, never matched by ticker), sell on another: real-transfer net after taker fees, order-book slippage and the withdrawal fee at your size, pre-funded net, capacity at net >= 0 / 0.3%…

• pair_history

  Funding actually settled on both legs over 7 / 30 / 90 / 180 / 365 days, applied to today's orientation at your size: net after the four trading costs, max drawdown, negative days, daily sign flips, how far back each exchange's history reaches. Ranges beyond 7 days need Pro.

• term_structure

  Annualised basis of every delivery future of one coin on every exchange we cover, next to perp funding.

• venue_execution_cost

  Taker fee plus order-book slippage to enter $10k / $100k / $1M long and short on one exchange's biggest markets, in basis points.

• service_status

  Whether AfterFees data is live right now, which exchange feeds are down, and availability over 1 / 7 / 30 / 90 days.

• order_checklist

  The two orders to place by hand for one pair: action, exchange, symbol, quantity in the exchange's own unit (contracts where one contract is not one coin), notional, assumed leverage and a link to each contract's trading page (no referral parameters). AfterFees never trades.

• holding_scenarios

  Net after fees and slippage of one live pair held 8 h, 1 d, 3 d, 7 d and 30 d, optionally with your own assumed funding rate per leg (percent per funding period, keyed by instrument_id).

• manual_calculator

  Net, net APR, breakeven and funding-halved case for two legs you describe (no live data): each leg {side: long|short, rate_pct per period, interval_hours, taker_bps, first_in_hours?}.

• boros_lock_calculator

  Locked net (income) or cost APR on Pendle Boros at an implied APR you give, after the taker and settlement fees and the entry cost, its advantage over a floating APR you expect and the break-even floating rate. Percent inputs.

• transfer_calculator

  Buy on exchange A, withdraw, sell on exchange B at prices you give: real-transfer and prefunded net, break-even premium. Fees in percent, withdrawal fee in coins.

• boros_market

  Detail of one Boros market (id from fixed_vs_floating): fixed rate at your size net of fees, floating benchmarks, advantage, win rate, capacity, reasons.

• boros_futures_basis

  Lock funding on Boros against a delivery future of the same maturity: implied APR vs basis APR, net after fees and slippage at your size.

• exchanges

  Every exchange AfterFees reads: kind, fully calculated or watch-only, status, markets, taker / maker fee, open interest, 24 h volume.

• exchange_overview

  One exchange: fees and their source, funding intervals, open interest, volume, highest and lowest funding and its best after-fee pairs.

• coins

  Coins with a perp on two or more exchanges: exchange count, open interest, highest and lowest funding APR and the best after-fee pair.

• track_record

  How AfterFees' daily top picks actually did: predicted net vs net realised from settled funding over the hold, hit rate, mean error, latest picks.

• dex_scan

  Tokens our exchanges list with a verified contract on Ethereum, BNB Chain, Base, Arbitrum or Solana whose DEX price is more than 1% away: net at $1k / $5k / $10k after aggregator price impact, swap gas, the token transfer gas and the exchange's withdrawal fee, status and reasons…

• spread_chart

  Candles of (A − B) / B between any two instruments (book mids where stored, else marks). Free: 1 h candles and longer over up to 7 days; Pro: 1 m and up, up to 365 days.

• my_positions

  Your positions across the read-only exchange keys connected to your AfterFees account, grouped into hedges: delta drift, distance to liquidation, funding received, issues. Needs a Pro account token; AfterFees only accepts read-only keys. Needs a Pro API token (Authorization: Bea…

• spread_convergence

  The same coin priced differently on two exchanges' perpetuals: long the cheaper, short the dearer, close when the gap returns to its 7-day median. Net at your size after four taker fees, slippage on live order books and stablecoin conversion; how often the gap came back over 7 d…

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