emerging · 0.0 capability resourceaction

Card Payments

Score 23.5 / 100 26 providers +9 via APIs 18 APIs Search apis.io →

Providers using this tag (26)

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 1 Complete, well-documented, and agent-ready
Strong 6 Solid coverage with minor gaps
Developing 12 Usable, with meaningful gaps to close
Thin 6 Limited public surface area
Emerging 1 Early or largely undocumented

APIs with this tag (18)

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
Strong 1 Solid coverage with minor gaps
Developing 14 Usable, with meaningful gaps to close
Trust Payments Webservices APIServer-to-server JSON API (the Secure Trading Payment Platform / STPP) for card processing and management o...52.5Mercado Pago Checkout APIFull server-side checkout control. Tokenise cards client-side, create a payment server-side, manage 3DS cha...51.0iyzico Payment APIREST API for accepting card payments (NON-3DS and 3D Secure), hosted CheckoutForm and Pay with iyzico flows...50.8Cardstream Gateway - Direct IntegrationServer-to-server integration. The merchant collects payment details on its own secure server and sends a UR...50.0Cardstream Gateway - Hosted IntegrationHosted Payment Pages (HPP) integration. The merchant's browser POSTs a URL-encoded request to the Gateway, ...50.0Westpac PayWay REST APIFirst-party Westpac payment API (beyond CDR). PayWay is Westpac's merchant payment platform; its public RES...49.7Westpac QuickStream REST APIFirst-party Westpac payment API (beyond CDR). QuickStream is Westpac's online payment gateway; its public R...49.7Cashflows Payments APIREST/JSON API for cardholder-not-present card payments with 3-D Secure support — authorisation, capture, vo...49.4ACI Open Payment Platform — Server-to-Server APIThe core RESTful payment API of the ACI Open Payment Platform (PAY.ON gateway). Server-to-Server integratio...49.3Worldpay Card Payments APIThe Card Payments API from Worldpay — 2 operation(s) for card payments.45.9GOV.UK Pay Card payments APIThe Card payments API from GOV.UK Pay — 5 operation(s) for card payments.45.4eWAY Rapid APIThe eWAY Rapid API is a versioned HTTP payments API (v47) for processing card transactions. It exposes tran...43.8Epoint Payment APIREST payment gateway for accepting online card payments in Azerbaijan. Covers payment creation and hosted c...40.3Increase Card Payments APICard Payments group together interactions related to a single card payment, such as an authorization and it...40.3
Thin 1 Limited public surface area
Emerging 1 Early or largely undocumented

Companies reaching this through an API (9)

These companies publish an API, specification or operation carrying “Card Payments” 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.

Efí Pay (Gerencianet) GOV.UK Pay Increase Mercado Pago Stitch Toss Weavr Westpac Banking Corporation Worldpay

Score breakdown

Frequency
45.5
log-scaled weighted occurrences
Breadth
0.7
spread across providers
Quality lift
52.1
mean composite of providers using it
Cohesion
10.3
strength of nearest seed neighbor

Where this tag sits

Payments broader

Related tags

Acquiring 12 co-occurrences Payment Gateway 20 co-occurrences Payment Processing 14 co-occurrences 3D Secure 7 co-occurrences In-Person Payments 5 co-occurrences Bank Transfers 6 co-occurrences Payment Links 7 co-occurrences Refunds 15 co-occurrences

Where this tag comes from

Provider tag26
Api tag18
Openapi tag4
Openapi op tag9

Cohort brief

Auto-generated

The 26 providers in the APIs.io catalog tagged Card Payments, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
26
all scored
Mean Kin Score
46
+22 vs catalog 24
Mean Agent Readiness
27.2
+14.8 vs catalog 12.4
Spread
11.7–70.7
median 49.3 · σ 12.1
How the 26 split by band
Exemplar 1Strong 6Developing 12Thin 6Emerging 1Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Developer Ergonomics 56.8 23.4 +33.4 26
Contract Quality 46.1 20.1 +26 26
Operational Transparency 31.4 14 +17.4 26
Discoverability 73.1 61 +12.1 26
Access Clarity 37.9 26.5 +11.4 26
Contract Governance 12 6.5 +5.5 26

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
ArtifactThis cohortCatalogDifference
MCP server (any) 12% 10% +2
MCP server (first-party) 12% 13% -1
Agent Skills 0% 0% 0
OAuth scopes 12% 11% +1
Security 100% 96% +4
Arazzo workflows 8% 2% +6
Governance rules 15% 13% +2

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. 1 PayMongo 70.7
  2. 2 Paymob 60.4
  3. 3 Paymentsense 59.2
  4. 4 Dojo 56.4
  5. 5 Fat Zebra 55.7
  6. 6 Pinch Payments 55
  7. 7 Beam Checkout 54.6
  8. 8 Monoova 52.8
  9. 9 Trust Payments 52.5
  10. 10 Kushki 51.1
Top by Agent Readiness
  1. 1 Moneris 52.6
  2. 2 Paymob 47.6
  3. 3 Pinch Payments 38.8
  4. 4 Dojo 35.7
  5. 5 Fat Zebra 35.4
  6. 6 Till Payments 35.4
  7. 7 Zettle 34.6
  8. 8 Monoova 32.1
  9. 9 PayMongo 29.6
  10. 10 Paymentsense 29.6
All 26 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 20 September 2026, across 27620 providers, using the same computation served by the APIs.io cohort API. Briefs are published for rosters of 5 or more scored providers; below that a distribution is not meaningful.

Work with this as data

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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

curl for this page
This tag
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All tags
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As a scored cohort
curl "https://apis.io/api/v1/cohorts/tag/card-payments"
The distribution (Pro)
curl "https://apis.io/api/v1/cohorts/tag/card-payments/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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