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

How do I install RightCard?

Clone RightCard from https://github.com/rightcard/rightcard-mcp and configure it as an MCP server in your client (Claude Desktop, Cursor, or VS Code).

Is RightCard open source?

Yes, RightCard is open source under the MIT license. Source code is available at https://github.com/rightcard/rightcard-mcp.

What category does RightCard belong to?

RightCard is listed under Other MCP servers on MCPFind.

RightCard — MCP Server for Other

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:

{ "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.

Privacy

The hosted server logs request counts only. No identifiers, no cookies, no storage. Full policy: https://rightcard.ai/privacy

Set up in your AI client

AI clientOperating system

Merge this template into ~/Library/Application Support/Claude/claude_desktop_config.json. Keep existing servers. Add any arguments, credentials, and permissions required by the maintainer; this template has not been install-tested.

json

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

Restart Claude Desktop completely for changes to take effect. Confirm the server appears connected in the client’s tool list, then try a read-only example from its documentation.

Claude Desktop setup reference

Compatible MCP Clients

RightCard works with any MCP-compatible client. Copy the config snippet from the Configuration section above and add it to the file shown for your client, then restart the application.

Claude Desktop~/Library/Application Support/Claude/claude_desktop_config.jsonRestart Claude Desktop completely for changes to take effect.

Cursor~/.cursor/mcp.jsonRestart Cursor for changes to take effect.

VS Code.vscode/mcp.jsonReload VS Code window for changes to take effect.

Windsurf~/.codeium/windsurf/mcp_config.jsonRestart Windsurf for changes to take effect.

Claude Code.mcp.jsonSave at the project root, then start Claude Code in that project and review the MCP server approval prompt. Keep real credentials out of shared files.

RightCard