creditcards.best

Ask your assistant about credit cards. Get real answers.

Connect creditcards.best to Claude, ChatGPT, Cursor, or a dozen other assistants and they stop recalling fees and bonuses from memory. They read our data instead, sourced to the issuer and dated. Setup is one line. No signup, no key.

The address you paste

https://mcp.creditcards.best

That is the whole setup. No password, no token. If your client wants an address ending in /mcp, that works too.

Pick your assistant

Every client wants this written slightly differently. Choose yours for the exact steps.

Most people start here

Also supported

Works, with caveats

Claude.ai

Settings UI
  1. 1Go to Settings → Connectors, or open claude.ai/customize/connectors directly.
  2. 2Click the + next to Custom connectors, then Add custom connector.
  3. 3Name it creditcards and paste the URL below. Leave every OAuth and header field empty.
  4. 4Click Add, then start a chat and ask for a card recommendation.
https://mcp.creditcards.best

Worth knowing

  • On the Free plan you can have one custom connector in total.
  • On Team and Enterprise, only an Owner can add a connector, from Organization settings → Connectors.
  • A connector added on the web also shows up in the iOS and Android apps. Adding one from mobile is still in beta.

What it can do

Six tools, all read-only. Nothing here can change anything on your side, and nothing applies for a card on your behalf.

search_cards

Filter by type, issuer, fee, foreign-transaction fee, bonus value, credit band, or category.

get_card

Everything on one card: earn rates, credits, eligibility, sources, and when it was last checked.

estimate_rewards

Rank cards by what they would actually earn on a given spending pattern, with the math shown.

check_eligibility

Cards a given credit band typically qualifies for, including issuer rules like Chase's 5/24.

compare_cards

Two or more cards side by side.

get_apply_link

The apply link for a card.

Try asking

“I spend $900 a month on groceries and $400 on dining. Which card earns me the most after the annual fee?”

“Compare the Chase Sapphire Preferred and the Capital One Venture X on fees and travel credits.”

“My credit is around 700. Which no-annual-fee cash back cards would I likely qualify for?”

Questions

Do I need an account or an API key?

No. The server is open and unauthenticated. Leave every OAuth, token, and header field in your client empty.

Does it cost anything?

No. Some assistants require a paid plan of their own before they will connect to any outside server, which is noted per client above.

What does my assistant send you?

Only the query it makes, like a spending pattern or a card name. There is no account, so there is nothing to attach it to.

Where do the numbers come from?

Verified cards are read off the issuer's own page and carry the date they were checked. Cards we have not verified yet are flagged in every response, and unknown fields stay null rather than being guessed.

Coverage is every major US issuer. 12 of 170 cards are fully issuer-verified today and carry a date; the rest are listed with their numbers flagged as unverified, so your assistant can tell you which is which. Newest check across the dataset: 2026-07-23.