RightCard

Name: RightCard
Author: rightcard

@rightcardMCP server · External

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

Personal financev0.1.9MITTypeScript

Freeno charge per call

One address for any MCP client. No sign-in needed on this server.

What it does

2 read3 other

Grouped by tool name. At most: only reads or looks up information.

What it costs

Free

Odel charges nothing per call. The publisher may charge for its own service.

Tools

5 · grouped by tool name · checked 13 Oct 2026

Read · 2Look things up

lookup_merchant
search_cards

Other · 3Neither hinted nor named

best_card
card
rotating_calendar

Try it in the Inspector

README2 min readView on GitHub

RightCard MCP

The card-selection oracle for agents: which of your credit cards should pay here? Answers come from RightCard's bank-published, two-source-verified reward data — the same data the RightCard iOS app uses.

No bank login. No account. Nothing stored. You pass card ids and a store name; you get an answer.
Honest by construction: merchant-code caveats (Costco is a warehouse club, so the grocery bonus won't post), rotating quarters with activation flags, ties named, points valued per program.
Cash value by default; valuation: "points" for conservative travel values.

Use it

Hosted (stateless Streamable HTTP):

https://mcp.rightcard.ai/mcp

Local (stdio, nothing leaves your machine except a read of the public catalog):

npx rightcard-mcp

Claude Desktop / Claude Code / Cursor config:

json

{ "mcpServers": { "rightcard": { "command": "npx", "args": ["-y", "rightcard-mcp"] } } }

Tools

tool	what it answers
`best_card`	which of the given cards earns most at a store or category, today, with caveats
`lookup_merchant`	how a store is coded (category, merchant type, MCC-trap caveat)
`search_cards`	find card ids by name/issuer; verified first, unverified flagged
`card`	one card's verified rates, rotating windows, choose-your-category spec
`rotating_calendar`	live + upcoming rotating windows and permanent merchant benefits

Try: "I have the Amex Gold, Freedom Flex and Citi Double Cash. Which one at Costco?"

Parity with the app

src/engine.ts is a port of the iOS app's Swift engine. fixtures/engine_golden.json holds 3,100+ answers produced by the Swift code over the real catalog and merchant directory; npm test fails if the port disagrees on any of them. Offers (a user's personal bank offers) are deliberately not part of this server — they live on the phone.