JomoBench MCP server

Connect

Claude Code:

claude mcp add --transport http jomobench https://jomobench.com/mcp

Cursor, Windsurf and other clients that take a JSON config:

{
  "mcpServers": {
    "jomobench": { "url": "https://jomobench.com/mcp" }
  }
}

In Claude or ChatGPT, add it as a custom connector with the URL https://jomobench.com/mcp. No sign-in or key is needed. A plain GET to the same URL returns a short JSON description of the server.

Tools

Tool	Arguments	Returns
fee_quote	amount_usd (required), route (solana-low, solana-other, evm, major, or a chain name), code, round_trip	fomo's own fee for one spot trade, computed from fomo's published schedule: the fee in USD, the rate, the rule that applied, and the same trade with and without a referral code. Optionally the buy-and-sell round trip.
realized_fee	month (optional, "YYYY-MM")	The measured realized spot fee rate: what traders actually paid as a share of volume over the last 30 days, the last 7 days, the last complete month and every month since July 2026, with the method, sources and data date.
get_referral_info	venue (default fomo, or "all")	What a fomo code does (0.50% becomes 0.45%, nothing else), what fomo pays referrers, and JomoBench's honest referral state: today, no fomo code. For other apps, whether our link is a referral link and what it documents for you.
search_site	q, limit	JomoBench pages for a question: fees, measurements, guides, explainers, comparisons, data and news.

Every tool returns a readable text answer plus structuredContent with the raw numbers, a kind field ("measured" or "computed from fomo's published schedule") and its sources. All tools are read-only: none can sign, send or trade, and none connects to fomo.

Try it with curl

curl -s https://jomobench.com/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"tools/list"}'

curl -s https://jomobench.com/mcp \
  -H 'Content-Type: application/json' \
  -d '{"jsonrpc":"2.0","id":2,"method":"tools/call",
       "params":{"name":"fee_quote","arguments":{"amount_usd":100,"route":"solana"}}}'

That call returns fomo's fee on a $100 trade on Solana's lowest-fee route: $0.95, 0.95% ($0.95 flat from $47.50 to $190), and notes that a referral code does not change it. On a $1,000 trade on Base it would return $5.00 (0.50%), or $4.50 (0.45%) with a code, plus the network fee.

Data rules

• Fee quotes come from the same engine as our fee calculator, which follows fomo's help-centre article on trading fees. When fomo changes its schedule, the calculator and the tool change together. The fee fomo shows before you confirm always wins.
• Fee quotes exclude pool fees, price impact, network fees (paid by you off Solana) and token taxes.
• The realized fee rate follows the method on our methodology page and counts closed days only.
• Every valid fomo referral code does the same thing: the 0.50% rate becomes 0.45%. JomoBench has no fomo code today, and the tool says so (disclosure).
• The server never suggests ways around fomo's country rules: perps are not available to US persons.
• Nothing returned is financial advice. Most small tokens lose most of their value.

Data is licensed CC BY 4.0. The server is not listed in any MCP registry.