Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →

Exemplar 2 Complete, well-documented, and agent-ready

Oracle Hospitality Credit card APIThe Credit Card Internal Service contains operations used internally by OPERA Cloud.73.4 Toast Credit Cards APIRead tokenized credit-card information attached to orders for receipts, returns, and reconciliation. Toast ...68.4

Strong 3 Solid coverage with minor gaps

Mews Credit cards APIThe Credit cards API from Mews — 4 operation(s) for credit cards.60.1 QuickBooks Payments APIThe QuickBooks Payments API enables developers to process credit card charges, bank account debits (ACH), a...59.2 Mastercard Processing Credit APIsThe Mastercard Processing Credit API is designed to specifically address the aspects of the card lifecycle ...55.7

Developing 17 Usable, with meaningful gaps to close

Splitit Installments API v4The updated version of the Splitit Installments API offering enhanced capabilities for creating and managin...52.5 Fat Zebra Credit Cards APIThe Credit Cards API from Fat Zebra — 3 operation(s) for credit cards.52.2 Cart.com Credit Cards APIThe Credit Cards API from Cart.com — 2 operation(s) for credit cards.51.2 Rainforest QA Credit Cards APIOperations about credit_cards48.5 Toqio Credit Cards APIThe Credit Cards API from Toqio — 10 operation(s) for credit cards.47.2 Defacto Credit card APIThe Credit card API from Defacto — 6 operation(s) for credit card.45.3 Diners Club International Customer ServiceDiners Club International customer service capability offered to Diners Club franchisees and partners throu...45.1 Discover HCE Wallet ServicesDiscover HCE Wallet Services offers a secure and convenient way for customers to add their Discover card to...45.1 Discover Issuer Card Account ServicesIssuer Card Account Services (iCAS) is the Discover Global Network capability issuers use to manage changes...45.1 Discover Network Account UpdaterDiscover Network Account Updater keeps recurring and stored card-on-file payment credentials current so mer...45.1 Discover SE Wallet ServicesDiscover SE Wallet Services is a leading financial technology company that specializes in providing secure ...45.1 Discover Stored Token ServicesDiscover Stored Token Services (DSTS) replaces a customer's Primary Account Number (PAN) with a unique, sec...45.1 Klutch Public APIThe Klutch Public API is a GraphQL API for the Klutch programmable credit card. It exposes enriched transac...42.8 Concur Cards APIProvides an automated integration pathway for certified partner financial networks, issuing banks, and fin-...42.3 Synchrony Account Management APIThe Synchrony Account Management API provides access to cardholder account information, enabling partners t...42.0 Sheeva Credit Cards APIThe Credit Cards API from Sheeva — 5 operation(s) for credit cards.41.9 AIB Group (UK) Credit Cards Information APICredit Cards Information API providing access to credit card account information under the Open Banking con...40.6

Thin 12 Limited public surface area

Authorize.net Payment APIThe Authorize.net Payment API enables merchants to process credit card, debit card, eCheck, Apple Pay, Goog...34.7 Pagar.me Charges APIManage individual charges (cobranças) — the unit of capture inside an order. Get a charge, edit its payment...34.7 Pagar.me Orders APICreate, list, retrieve, and manage orders — the top-level payment object in the Pagar.me Core API v5. Each ...34.7 PetExec Credit Cards APIOwner stored payment cards.34.3 QuickBooks Payments APIREST API for processing credit card, ACH, and eCheck payments through Intuit's payments platform, with supp...34.2 Capital One Credit Offers APIThe Capital One Credit Offers API provides approved partners programmatic access to Capital One credit card...33.5 Capital One POS Credit Card Application APIThe Capital One POS Credit Card Application API lets merchants embed a Capital One credit card application ...33.5 Cielo E-commerce APIThe Cielo E-commerce API (also known as Cielo API 3.0) is the company's flagship online payment processing ...32.7 PayFast Credit Card Transactions APIQuery individual credit card transaction details31.8 PayFast Tokenization APIManage tokenized card payment agreements (adhoc charges)31.8 PagBank Orders APIThe Orders API from PagBank — 2 operation(s) for orders.31.1 Iugu APIRESTful API providing 140+ endpoints for payment processing, customer management, invoicing, subscriptions,...27.4

Emerging 12 Early or largely undocumented

CC Integration APICredit-card module integration API (private, partner B2B) for issuing and managing alt.bank white-label cre...23.5 GUARD APIReal-time consumer credit underwriting / risk-assessment API. Partners POST an underwriting request for a c...23.5 RBC Credit Card Catalog APISelf-serve informational API on the RBC External Developer Portal exposing RBC credit card product details,...20.8 American Express AMEX Account ConnectAMEX Account Connect is a suite of APIs that enables eligible American Express Card Members to add their Ca...20.5 American Express Card On-DemandAmerican Express Card On-Demand offers customers the convenience and flexibility of instantly receiving a d...20.5 American Express Enhanced Authorization (EA)American Express Enhanced Authorization (EA) is a fraud prevention tool that helps protect cardholders and ...20.5 American Express Token Service (AETS) APIThe American Express Token Service (AETS) API allows developers to securely tokenize cardholder data, provi...20.5 Cardless Partner APIThe Cardless partner API surface used by brands to embed a co-branded credit card program: partner authenti...20.1 Asaas Charges (Cobranças) APICore billing endpoint for creating individual charges payable by Boleto, Pix, Credit Card, Debit Card, or "...19.6 Asaas Credit Card APITokenize credit cards client-side and process card charges server-side, including pre-authorization (captur...19.6 PicPay Gateway Checkout APIUnified payment gateway API for accepting credit cards, PIX, and the PicPay wallet through transparent, sta...19.5 Falcon APIFalcon's RESTful embedded-finance API for card issuance, lending, and program management. All responses are...18.5

Companies reaching this through an API (19)

These companies publish an API, specification or operation carrying “Credit Cards” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.

AIB Group (UK) Cart.com Cielo Defacto Fat Zebra Intuit Mews Oracle Hospitality PagBank PayFast PetExec QuickBooks Rainforest QA Royal Bank of Canada SAP Concur Sheeva Synchrony Financial Toast Toqio

Score breakdown

Frequency

58.5

log-scaled weighted occurrences

Breadth

2.1

spread across providers

Quality lift

22.8

mean composite of providers using it

Cohesion

6.7

strength of nearest seed neighbor

Where this tag comes from

Api tag46

Provider tag80

Openapi tag8

Openapi op tag41

Cohort brief

Auto-generated

The 77 providers in the APIs.io catalog tagged Credit Cards, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

all scored

Mean Kin Score

19.1

-3.8 vs catalog 22.9

Mean Agent Readiness

9.7

-2.2 vs catalog 11.9

Spread

0–70.8

median 11 · σ 16.2

How the 77 split by band

Exemplar 1Strong 2Developing 8Thin 11Emerging 17Minimal 38

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	25.1	26.5	-1.4	77
Discoverability	56.2	58.1	-1.9	77
Contract Governance	4.4	6.3	-1.9	77
Developer Ergonomics	20.9	23.2	-2.3	77
Operational Transparency	9.3	13.7	-4.4	77
Contract Quality	12.1	17.6	-5.5	77

A facet is averaged over the members that carry it, not over the whole cohort — the “Scored” column is that count. Averaging an absent facet as zero would score our own coverage gaps as the providers’ posture.

What this cohort publishes

Artifact	This cohort	Catalog	Difference
MCP server (any)	5%	14%	-9
MCP server (first-party)	5%	12%	-7
Agent Skills	0%	0%	0
OAuth scopes	10%	11%	-1
Security	99%	98%	+1
Arazzo workflows	1%	2%	-1
Governance rules	10%	14%	-4

mcp_pct counts any mcp/ artifact including ones API Evangelist derived from the provider OpenAPI; mcp_first_party_pct counts only servers the provider publishes. Prefer the latter.

Top by Kin Score

1 PAY.JP 70.8
2 Barclays 56.6
3 Mastercard 55.7
4 Splitit 52.5
5 Deutsche Bank 49.7
6 Even Financial 48.4
7 Imprint 46.7
8 Discover 45.1
9 Visa 44.7
10 Upgrade 43.5

Work with this as data

Every tag here is available over the APIs.io API and to AI agents over MCP.

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Tools for tags

7 MCP tools reach this

find_tagsBrowse and filter every tag in the catalog.
get_cohortThis tag as a scored cohort — every provider carrying it, with scores.
cohort_statsPRO — the distribution across this tag: mean, median, band split, adoption rates.
cohort_rankingsPRO — the leaderboard, on composite AND agent-readiness axes.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

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This tag

curl "https://apis.io/api/v1/tags/credit-cards"

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As a scored cohort

curl "https://apis.io/api/v1/cohorts/tag/credit-cards"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/credit-cards/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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Credit Cards

Providers using this tag (80)

APIs with this tag (46)