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RightCard

by rightcard.ai · remote · local (npm) · no sign-in to list tools · v0.1.11 · published by ai.rightcard

Which of your credit cards to use at any store, from verified bank data. No bank login.

Changes · 4
CompareRegistry entry

5 tools: 4 change things and 1 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http rightcard https://mcp.rightcard.ai/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

5 tools

Changes things 4Claude Code: ask
  • best_cardWhich of the given cards earns the most at a store (merchant) or for a spend category, today.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Which of the given cards earns the most at a store (merchant) or for a spend category, today. Returns the card, the honest rate, why, and caveats (merchant-code traps, activation, ties). Base rates + rotating bonuses + built-in card benefits only; a user's personal bank offers live on their phone and are not consulted here.
  • cardEverything RightCard knows about one card: rates by category, base rate, currency, annual fee, verification status, live rotating windows, and the choose-your-category spec if it h…No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Everything RightCard knows about one card: rates by category, base rate, currency, annual fee, verification status, live rotating windows, and the choose-your-category spec if it has one.
  • lookup_merchantThe store's reward category as RightCard's directory files it, its merchant type, and the merchant-code caveat when a category bonus usually will not post there (superstores like W…No findings

    Why it is in this group

    • The name "lookup_merchant" says "lookup": a word for reading.
    • The description's first verb is "store": a word for a change.
    Description, as the server wrote it
    The store's reward category as RightCard's directory files it, its merchant type, and the merchant-code caveat when a category bonus usually will not post there (superstores like Walmart/Target, warehouse clubs like Costco/Sam's). Same ranking the app uses.
  • rotating_calendarLive and upcoming rotating-category windows (Freedom Flex, Discover it, Citi Dividend…) and permanent merchant benefits, from the same verified data as the app.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Live and upcoming rotating-category windows (Freedom Flex, Discover it, Citi Dividend…) and permanent merchant benefits, from the same verified data as the app. Optionally filter by card id.
Only reads 1Claude Code: allow
  • search_cardsSearch RightCard's catalog by card or issuer name to get the ids to pass into best_card.No findings

    Why it is in this group

    • The name "search_cards" says "search": a word for reading.
    Description, as the server wrote it
    Search RightCard's catalog by card or issuer name to get the ids to pass into best_card. Verified cards first; unverified cards are flagged, never hidden.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 0.1.11. Values in angle brackets are yours to fill in.

claude mcp add --transport http rightcard https://mcp.rightcard.ai/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__rightcard__search_cards"
    ],
    "ask": [
      "mcp__rightcard__best_card",
      "mcp__rightcard__lookup_merchant",
      "mcp__rightcard__card",
      "mcp__rightcard__rotating_calendar"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as rightcard. Review it before you use it.