io.github.linyejiaPublished by GitHub account linyejiav0.18.9Updated Oct 30, 2026
Crypto funding-rate arbitrage across 50 exchanges, net of fees and order-book slippage. Read-only.
Read-only crypto funding-rate arbitrage analytics across 50 exchanges, with every net figure after taker fees and order-book slippage at a stated size.
Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.
Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.
Read https://sourceweft.com/mcp/io.github.linyejia%2Fafterfees/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.Add this to your client's mcpServers config.
{
"mcpServers": {
"afterfees": {
"type": "http",
"url": "https://afterfees.xyz/mcp"
}
}
}Crypto funding-rate arbitrage for AI assistants, with every number net of fees and order-book slippage.
AfterFees prices ~75,000 long/short pairs across 50 exchanges (CEX, perp DEXs, Hyperliquid HIP-3) and tells you what a trade would actually earn at your size: funding minus taker fees on all four fills, slippage walked on the live order books, borrow interest, stablecoin conversion and holding period. Most screeners show the gross rate spread; once costs and real order-book depth are counted, often only a handful of the tens of thousands of pairs can be opened at $10,000 per side. This server gives your assistant the same numbers as afterfees.xyz.
https://afterfees.xyz/mcp.Claude (desktop or claude.ai): Settings → Connectors → Add custom connector → URL https://afterfees.xyz/mcp
Claude Code:
Cursor (~/.cursor/mcp.json):
VS Code (.vscode/mcp.json):
With a Pro token (your own size and holding period, every tool, Pro limits), add the header
Authorization: Bearer <your token> — for example claude mcp add --transport http afterfees https://afterfees.xyz/mcp --header "Authorization: Bearer arb_...".
Tokens are created on afterfees.xyz/developers.
Every net figure says how its slippage was counted (net_basis): exact = walked on the live order books,
reference = top of book only, before_slippage = no book. The method behind every number is published at
afterfees.xyz/methodology.
AfterFees is built by Origin Trade Labs. Estimates from current data, not investment advice; we never hold funds or trade for you. Questions and feedback: the Feedback button on afterfees.xyz.
This repository holds the server's listing (this README and server.json for the
MCP Registry); the server itself is hosted.
Source: README.md at commit 85bd32c
Best funding-rate arbitrage 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.
basemodelimitnotionalholding_hoursactionable_onlyOne coin across exchanges
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.
baserequirednotionalEvery number of one pair
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 (Authorization: Bearer arb_…); not available on the anonymous tier.
notionalpair_keyrequiredholding_hoursFunding 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).
baselimitmin_oi_usdMargin 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.
baselimitFixed vs floating funding (Pendle Boros)
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.
basesidelimitnotionalExecution cost to enter a position
Taker fee + order-book slippage to buy or sell a given USD size of one coin on every exchange (perps and spot), cheapest first.
baserequiredsize_usdBasis trades against delivery futures
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.
baselimitscopenotionalactionable_onlyCross-exchange transfer (spot) arbitrage 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% / 1%, arrival estimate, hedge cost on a perp, status and reasons. view=traps lists spreads that exist only because deposits or withdrawals are closed.
baseviewlimitstatusnotionalinclude_hedgeSettled-rate replay of one pair (7 to 365 days)
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.
rangenotionalpair_keyrequiredFutures term structure of one coin
Annualised basis of every delivery future of one coin on every exchange we cover, next to perp funding.
baserequiredExecution cost on one exchange
Taker fee plus order-book slippage to enter $10k / $100k / $1M long and short on one exchange's biggest markets, in basis points.
limitvenuerequiredService status
Whether AfterFees data is live right now, which exchange feeds are down, and availability over 1 / 7 / 30 / 90 days.
Takes no parameters.
Order checklist for one pair
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.
notionalpair_keyrequiredOne pair over different holding periods
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).
notionalpair_keyrequiredassumed_rates_pctFunding arbitrage calculator (typed-in legs)
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?}.
legsrequiredleveragenotionalslippage_bpsholding_hoursBoros fixed-rate 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.
daysrequiredsidenotionalrate_pctrequiredentry_usdtaker_pctsettle_pctfloating_pctCross-exchange 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.
buyrequiredsellrequiredtripsamountfee_a_pctfee_b_pctusdt_backwithdraw_coinOne Pendle 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.
sidenotionalmarket_idrequiredBoros implied rate vs 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.
limitnotionalExchanges covered
Every exchange AfterFees reads: kind, fully calculated or watch-only, status, markets, taker / maker fee, open interest, 24 h volume.
Takes no parameters.
One exchange
One exchange: fees and their source, funding intervals, open interest, volume, highest and lowest funding and its best after-fee pairs.
venuerequiredCoins covered
Coins with a perp on two or more exchanges: exchange count, open interest, highest and lowest funding APR and the best after-fee pair.
grouplimitPublic 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.
Takes no parameters.
CEX ↔ DEX arbitrage 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. Pro. Needs a Pro API token (Authorization: Bearer arb_…); not available on the anonymous tier.
baselimitPrice spread of two legs
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.
daysleg_arequiredleg_brequiredcandleexecutableMy hedged positions (read-only keys)
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: Bearer arb_…); not available on the anonymous tier.
Takes no parameters.
100% of the applicable checks met
How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.
claude mcp add --transport http afterfees https://afterfees.xyz/mcp{ "mcpServers": { "afterfees": { "url": "https://afterfees.xyz/mcp" } } }{ "servers": { "afterfees": { "type": "http", "url": "https://afterfees.xyz/mcp" } } }