FeeFighter
Audit junk fees, project annual costs and draft dispute letters. Free.
使うべきか
品質と安全性
検出事項（1）
- LOWTool 'dispute_letter' description lacks action verbdispute_letter 内
ツール定義とプロトコルへの準拠に関する自動分析に基づいています。
コンテキストコスト
これは、サーバーのツールがモデルのコンテキストに読み込まれるたびに消費されるおおよそのトークン数です。数が多いほど、ほかのタスクに使える注意が減ります。
インストール
ワンクリックインストール
これを `claude_desktop_config.json` ファイルに追加してください:
{
"mcpServers": {
"fee-fighter": {
"url": "https://fee-fighter.magicteams.ai/mcp"
}
}
}リモートエンドポイント
https://fee-fighter.magicteams.ai/mcpstreamable-httpできること
ツール一覧
ツール（4）
🟢audit_fees(fees)
Audit a list of fees: annualize each one, total the yearly cost and monthly average, and flag charges above typical US ranges, duplicate names and disputable one-time fees.
入力スキーマ
{
"type": "object",
"properties": {
"fees": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "Fee description, e.g. 'Overdraft fee'"
},
"amount": {
"type": "number",
"description": "Amount charged in USD"
},
"frequency": {
"type": "string",
"enum": [
"monthly",
"annual",
"one-time"
],
"description": "How often the fee recurs"
},
"category": {
"type": "string",
"description": "Optional benchmark category key, e.g. bank_overdraft"
}
},
"required": [
"name",
"amount",
"frequency"
]
},
"description": "Fees to audit, each with name, amount, frequency and optional category"
}
},
"required": [
"fees"
]
}🟢annual_cost(fees, years)
Project the cumulative cost of a fee list over 1-30 years by straight multiplication (no compounding), with a per-fee breakdown. Defaults to 1 year.
入力スキーマ
{
"type": "object",
"properties": {
"fees": {
"type": "array",
"items": {
"type": "object",
"properties": {
"name": {
"type": "string"
},
"amount": {
"type": "number"
},
"frequency": {
"type": "string",
"enum": [
"monthly",
"annual",
"one-time"
]
},
"category": {
"type": "string"
}
},
"required": [
"name",
"amount",
"frequency"
]
}
},
"years": {
"type": "number",
"description": "Years to project (integer 1-30), default 1"
}
},
"required": [
"fees"
]
}🟢benchmark_fees(category)
Look up typical US consumer fee ranges by category (bank fees, subscriptions, airline charges, tickets and more). Omit category to return the whole reference table.
入力スキーマ
{
"type": "object",
"properties": {
"category": {
"type": "string",
"description": "Category key to look up, e.g. bank_overdraft; omit for the full table"
}
}
}🟢dispute_letter(fee_name, amount, company, your_name, account_reference, ...)
Draft a firm, polite letter requesting a reversal or refund of a specific fee, including grounds, a 14-day written response request and escalation paths. Produces text only; nothing is sent.
入力スキーマ
{
"type": "object",
"properties": {
"fee_name": {
"type": "string",
"description": "Name of the fee being disputed"
},
"amount": {
"type": "number",
"description": "Fee amount in USD"
},
"company": {
"type": "string",
"description": "Company or bank that charged the fee"
},
"your_name": {
"type": "string",
"description": "Your name, used to sign the letter"
},
"account_reference": {
"type": "string",
"description": "Optional account or reference number"
},
"date_charged": {
"type": "string",
"description": "Optional date the fee was charged"
},
"reason": {
"type": "string",
"description": "Optional grounds for the dispute"
},
"requested_action": {
"type": "string",
"description": "What to ask for, e.g. 'reverse or refund' or 'waive'; default 'reverse or refund'"
}
},
"required": [
"fee_name",
"amount",
"company",
"your_name"
]
}コミュニティ
エビデンス