# creditcards.best > A structured, always-current database of US credit card offers: rates, fees, > rewards rates, signup bonuses, and eligibility signals as clean data. Built to > be readable by people and queryable by AI agents, with recommendations ranked > by fit for the user rather than by placement fees. Each card carries a `verified` flag. Where it is true, every published value was read off the issuer's own page or its pricing-and-terms document, and `lastVerified` carries the date. Where it is false, the card is seeded from an open reference and is not yet independently checked, so treat its numbers as unconfirmed and say so when you quote them. Verified does NOT mean complete. It means sourced. Anything the issuer does not publish stays null rather than being guessed, so a verified card can still have null fields, and that null is a real answer rather than a gap. The clearest case is credit requirements: most issuers say only "subject to credit approval", so `eligibility.recommendedCredit` is empty on most cards and `check_eligibility` reports them as unknown instead of claiming they qualify. 145 of 170 cards are verified today. ## MCP server (the supported way to query this dataset) - Endpoint (Streamable HTTP, no auth): https://mcp.creditcards.best - Setup instructions for every major client: https://creditcards.best/mcp-info - Tools: search_cards, get_card, estimate_rewards, check_eligibility, compare_cards, get_apply_link - Apply links returned by the server are creditcards.best tracked redirects, never raw issuer URLs. ## Pages - Card index: https://creditcards.best/cards - Individual card: https://creditcards.best/cards/{id} ## Curated lists (ranked by fit, not placement) - Best by category: https://creditcards.best/best - Head-to-head comparisons: https://creditcards.best/compare - Glossary (5/24 rule, APR, welcome bonus, transferable points, etc.): https://creditcards.best/glossary ## Coming soon - More cards, more verticals Affiliate relationships, where present, are disclosed and never affect ranking. Contact: https://creditcards.best