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 1 Complete, well-documented, and agent-ready

Toast Credit Cards APIRead tokenized credit-card information attached to orders for receipts, returns, and reconciliation. Toast ...67.6

Strong 11 Solid coverage with minor gaps

QuickBooks Payments APIThe QuickBooks Payments API enables developers to process credit card charges, bank account debits (ACH), a...62.7 Barclays Account Management APIManage Barclaycard US card account settings and servicing actions on behalf of an authenticated cardholder.62.0 Barclays Card Application APIIntegrate credit card application functionality with real-time status updates.62.0 Barclays Card Control APIRead and change the controls a cardholder has on a Barclaycard — freeze and unfreeze the card and manage th...62.0 Barclays Statements Retriever APIRetrieve Barclaycard US cardholder statements for a card account.62.0 Mews Credit cards APIThe Credit cards API from Mews — 4 operation(s) for credit cards.61.5 Mews Credit cards APIThe Credit cards API from Mews — 4 operation(s) for credit cards.61.5 Mews Credit cards APIThe Credit cards API from Mews — 4 operation(s) for credit cards.59.8 Mastercard Processing Credit APIsThe Mastercard Processing Credit API is designed to specifically address the aspects of the card lifecycle ...58.2 ECI MFG Payment APICredit card and ACH processing for ECI manufacturing products through the Paya payment gateway: payments, a...56.6 Fat Zebra Credit Cards APIThe Credit Cards API from Fat Zebra — 3 operation(s) for credit cards.55.7

Developing 17 Usable, with meaningful gaps to close

Deutsche Bank API ProgramThe Deutsche Bank API Program (dbAPI) - 30 published OpenAPI contracts covering cash accounts, transactions...51.8 Toqio Credit Cards APIThe Credit Cards API from Toqio — 10 operation(s) for credit cards.51.4 Cart.com Credit Cards APIThe Credit Cards API from Cart.com — 2 operation(s) for credit cards.50.0 Rainforest QA credit_cards APIOperations about credit_cards48.8 Diners Club International Customer ServiceDiners Club International customer service capability offered to Diners Club franchisees and partners throu...48.7 Discover HCE Wallet ServicesDiscover HCE Wallet Services offers a secure and convenient way for customers to add their Discover card to...48.7 Discover Issuer Card Account ServicesIssuer Card Account Services (iCAS) is the Discover Global Network capability issuers use to manage changes...48.7 Discover Network Account UpdaterDiscover Network Account Updater keeps recurring and stored card-on-file payment credentials current so mer...48.7 Discover SE Wallet ServicesDiscover SE Wallet Services is a leading financial technology company that specializes in providing secure ...48.7 Discover Stored Token ServicesDiscover Stored Token Services (DSTS) replaces a customer's Primary Account Number (PAN) with a unique, sec...48.7 Klutch Public APIThe Klutch Public API is a GraphQL API for the Klutch programmable credit card. It exposes enriched transac...45.2 Synchrony Account Management APIThe Synchrony Account Management API provides access to cardholder account information, enabling partners t...45.0 Sheeva Credit Cards APIThe Credit Cards API from Sheeva — 5 operation(s) for credit cards.44.6 Capital One Credit Offers APIThe Capital One Credit Offers API provides approved partners programmatic access to Capital One credit card...44.4 Capital One POS Credit Card Application APIThe Capital One POS Credit Card Application API lets merchants embed a Capital One credit card application ...44.4 Concur Cards APIProvides an automated integration pathway for certified partner financial networks, issuing banks, and fin-...43.0 AIB Group (UK) Credit Cards Information APICredit Cards Information API providing access to credit card account information under the Open Banking con...41.6

Thin 3 Limited public surface area

PetExec Credit Cards APIOwner stored payment cards.37.5 Authorize.net Payment APIThe Authorize.net Payment API enables merchants to process credit card, debit card, eCheck, Apple Pay, Goog...36.9 QuickBooks Payments APIREST API for processing credit card, ACH, and eCheck payments through Intuit's payments platform, with supp...34.8

Emerging 9 Early or largely undocumented

CC Integration APICredit-card module integration API (private, partner B2B) for issuing and managing alt.bank white-label cre...24.4 GUARD APIReal-time consumer credit underwriting / risk-assessment API. Partners POST an underwriting request for a c...24.4 Cardless Partner APIThe Cardless partner API surface used by brands to embed a co-branded credit card program: partner authenti...22.1 American Express AMEX Account ConnectAMEX Account Connect is a suite of APIs that enables eligible American Express Card Members to add their Ca...21.1 American Express Card On-DemandAmerican Express Card On-Demand offers customers the convenience and flexibility of instantly receiving a d...21.1 American Express Enhanced Authorization (EA)American Express Enhanced Authorization (EA) is a fraud prevention tool that helps protect cardholders and ...21.1 American Express Token Service (AETS) APIThe American Express Token Service (AETS) API allows developers to securely tokenize cardholder data, provi...21.1 RBC Credit Card Catalog APISelf-serve informational API on the RBC External Developer Portal exposing RBC credit card product details,...20.5 Falcon APIFalcon's RESTful embedded-finance API for card issuance, lending, and program management. All responses are...19.6

Companies reaching this through an API (16)

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 ECI Solutions Fat Zebra Intuit Mews Mews PetExec QuickBooks Rainforest QA Royal Bank of Canada SAP Concur Sheeva Synchrony Financial Toast Toqio

Score breakdown

Frequency

56.9

log-scaled weighted occurrences

Breadth

1.9

spread across providers

Quality lift

21.4

mean composite of providers using it

Cohesion

5.2

strength of nearest seed neighbor

Where this tag comes from

Api tag41

Provider tag68

Openapi tag7

Openapi op tag38

Cohort brief

Auto-generated

The 64 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

19.3

-4.6 vs catalog 23.9

Mean Agent Readiness

9.7

-2.3 vs catalog 12

Spread

0.5–76.4

median 10.2 · σ 18.2

How the 64 split by band

Exemplar 1Strong 2Developing 10Thin 4Emerging 12Minimal 35

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Contract Governance	4.6	6.4	-1.8	64
Access Clarity	24.2	26.5	-2.3	64
Discoverability	58.6	61.2	-2.6	64
Developer Ergonomics	20.1	23.4	-3.3	64
Operational Transparency	8.6	14	-5.4	64
Contract Quality	13.3	19.8	-6.5	64

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)	3%	10%	-7
MCP server (first-party)	5%	13%	-8
Agent Skills	0%	0%	0
OAuth scopes	12%	11%	+1
Security	97%	97%	0
Arazzo workflows	2%	2%	0
Governance rules	8%	14%	-6

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 76.4
2 Barclays 62
3 Mastercard 58.2
4 Deutsche Bank 51.8
5 Even Financial 50.8
6 Imprint 49.7
7 Discover 48.7
8 Upgrade 45.5
9 Klutch 45.2
10 Capital One 44.4

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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https://apis.io/mcp

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"

All tags

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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 (68)

APIs with this tag (41)