FeeFighter
Audit junk fees, project annual costs and draft dispute letters. Free.
Connect it
Settings → Connectors → Add custom connector
URL: https://fee-fighter.magicteams.ai/mcpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://fee-fighter.magicteams.ai/mcp{
"mcpServers": {
"fee-fighter": {
"url": "https://fee-fighter.magicteams.ai/mcp"
}
}
}claude mcp add --transport http fee-fighter https://fee-fighter.magicteams.ai/mcp{
"servers": {
"fee-fighter": {
"type": "http",
"url": "https://fee-fighter.magicteams.ai/mcp"
}
}
}4 tools, verified live
audit_feesread-onlyAudit a list of fees: annualize each one (monthly x12), total the yearly cost and monthly average, and flag charges above the typical US range for their category, duplicate names and one-time fees of $30+ worth disputing. Use when the user lists fees to review. For a multi-year projection use annual_cost; for typical ranges alone use benchmark_fees.
annual_costread-onlyProject the cumulative cost of a fee list over 1-30 years by straight multiplication of each recurring fee's annualized amount, with one-time fees counted once (no compounding or inflation), with a per-fee breakdown. Use for 'what will these cost me over N years'. It does not flag fees: use audit_fees to find problem charges, benchmark_fees for typical ranges.
benchmark_feesread-onlyLook up typical US consumer fee ranges (min/max per charge, USD) for one category such as bank_overdraft, or the full 14-category table when category is omitted. Use to answer 'is this fee normal?' questions. To check a user's own list of fees against these ranges, use audit_fees.
dispute_letterread-onlyDraft (text only; nothing is sent) a firm, polite letter asking a company to reverse or refund one specific fee, with grounds, a 14-day written-response request, an escalation path and sending tips. Use once the user has picked a fee to contest. To find which fees are worth disputing first, use audit_fees.
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