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

Auth0 My Organization APIOrganization-scoped endpoints for B2B customers to manage their own Organizations — IdP configuration, SCIM...70.4

Strong 15 Solid coverage with minor gaps

Orange Business API PlaceMarketplace surface for discovering Orange Business APIs — programmatic catalogue access for the Orange Bus...65.3 Orange Business Billing APIProgrammatic access to Orange Business Services M2M invoices, charges, and itemised usage records for enter...65.3 Orange Business Core Information APICustomer-facing inventory API for Orange Business Services — list contracts, sites, services, and product i...65.3 Orange Business Incident APIOpen, update, and track Orange Business Services support tickets via REST. Aligned with TM Forum TMF621 Tro...65.3 Orange Business Operator Eligibility (France) APICheck broadband and fibre eligibility at a French address for operator partners — feeds B2B onboarding flows.65.3 Orange Business Order Tracking APITrack the lifecycle and milestones of an Orange Business Services order — status, expected delivery, blocki...65.3 Orange Business Ordering APIPlace, modify, and cancel orders against the Orange Business Services product catalogue. Aligned with TM Fo...65.3 Orange Business RIP Operator Eligibility (France) APIPublic-initiative network (RIP) fibre eligibility check for French regional fibre rollouts, used by alterna...65.3 Kraken Embed REST APIB2B integration API enabling partners to embed Kraken trading, custody, and Earn capabilities into their ow...64.4 Swisscom Smart Catalogs for NATEL go APIBusiness/wholesale provisioning API covering the full NATEL go mobile subscription procurement lifecycle — ...59.0 Microsoft Entra External ID APIAPI for managing customer and partner identity and access management.58.4 PropelAuth End-User API Keys APIBackend REST API for issuing, validating, listing, updating, and revoking end-user API keys that PropelAuth...56.5 TrustRadius Downstream Intent Data APIDownstream intent activity — which accounts are researching a vendor's products, competitor products, and s...56.5 TrustRadius TrustQuotes Content Syndication APILicensed review-quote syndication. GET /trustquotes returns review excerpts with the quote text, a link and...56.5 Axway B2BiAxway B2Bi is a B2B and EDI integration solution for automating partner data exchange. It supports EDI, AS2...54.6

Developing 9 Usable, with meaningful gaps to close

Wego Flight B2B Distribution API v3B2B distribution API for partners to search and retrieve available flight prices and itineraries from Wego ...53.3 Wego Hotel B2B Distribution APIB2B distribution API for partners to pull static property content, price hotel rates for search criteria, a...53.3 Shell Aviation Fuel Reseller APIThe Shell Aviation Fuel Reseller API enables aviation fuel resellers and operators to manage fuel procureme...49.4 Informatica B2B Gateway REST APIThe B2B Gateway REST APIs enable running inbound and outbound partner flows, querying the status of events,...48.7 PortOne B2B APIThe B2B API from PortOne — 26 operation(s) for b2b.48.5 SAP Trading Partner Management APIThe SAP Trading Partner Management API supports setup and management of B2B trading partner relationships, ...47.9 M-Pesa (Safaricom Daraja) B2B APIThe B2B API from M-Pesa (Safaricom Daraja) — 2 operation(s) for b2b.47.4 B2B Insurance Inquiry APIThe State Farm B2B Insurance Inquiry API is designed for lenders, mortgage servicers, and financial institu...39.5 B2B Lender Services APIThe State Farm B2B Lender Services API provides mortgage lenders and auto lenders with programmatic access ...39.5

Thin 11 Limited public surface area

Heap Add Account Properties APIThe Heap Add Account Properties API allows developers to attach custom properties to account-level profiles...38.9 Echo EDI IntegrationEcho supports system-to-system EDI integration alongside its REST APIs via the EchoSync platform, enabling ...35.5 AirgasAirgas provides industrial, medical, and specialty gases and related products. The Airgas online platform s...30.0 HTS Assist (Agentic AI Customer Service)Agentic AI built specifically for airline and travel customer service, delivering end-to-end autonomous res...28.5 HTS CarsCar rental e-commerce platform from HTS that partners embed for global car rental inventory and booking. Pa...28.5 HTS Fintech Ancillaries (Cancel for Any Reason, Disruption Assistance, Seat Upgrades)Proprietary fintech ancillaries that partners attach to their bookings — Cancel for Any Reason (airlines an...28.5 HTS PackagesBundled flight + hotel package product from HTS. Partner-gated.28.5 HTS StaysHopper Technology Solutions lodging e-commerce platform that gives partners access to global hotel inventor...28.5 HTS Travel Loyalty Portals (Banks)Travel loyalty portals powering bank travel programs, used by partners such as Capital One Travel and RBC. ...28.5 Ola Corporate APIThe Ola Corporate API enables large enterprises to automate employee and expense management on the Ola Corp...27.4 Capterra Click Report APIThe Capterra Click Report API allows software vendors to programmatically retrieve historical click data fr...27.0

Emerging 20 Early or largely undocumented

Membrain Platform APIMembrain provides a sales enablement platform with APIs for prospecting, pipeline management, and analytics.25.3 Software Advice Reviews APISoftware Advice provides software review data, ratings, and recommendations through their platform. As a Ga...25.1 Qiwi Legal Entity PayoutsAPI for legal entities to issue payouts to wallets, cards, and bank accounts with batch and individual tran...24.6 Sherwin-Williams EDI IntegrationSherwin-Williams EDI integration capabilities enable trading partners to exchange electronic data interchan...23.7 Sherwin-Williams Supplier APIThe Sherwin-Williams Supplier API enables B2B partners to integrate supply chain workflows, manage purchase...23.7 Unit4 Access Point REST APIREST API for the Unit4 Access Point PEPPOL service enabling organizations to send and receive electronic bu...23.4 Tiffany & Co. Corporate Gifting PlatformTiffany & Co.'s B2B corporate gifting and recognition program platform, providing procurement and delivery ...20.3 Alyce APIREST API for the Alyce corporate gifting platform enabling programmatic gift sending, recipient tracking, b...19.6 Sheetz EDI IntegrationSheetz Distribution Services EDI and API integration capabilities enable suppliers and trading partners to ...19.3 American Express @ Work B2B APIThe American Express @ Work B2B API is a suite of services that allows businesses to securely access their ...18.9 Riiid Partner SolutionsB2B / AI-as-a-Service (R.Inside) engagements that embed Riiid's adaptive learning and knowledge-tracing AI ...18.9 Levels Partner ProgramA "Partner With Us" program for clinics and partners surfaced in the Levels site footer. No partner-facing ...18.2 Shipwire Purchase Order APICreate, edit, and cancel purchase orders in the Shipwire system for B2B fulfillment workflows. POs can be a...17.4 Mindtrip for BusinessPartnerships and integrations for destinations, DMOs, hotels, and travel suppliers to reach Mindtrip travel...14.6 Cardinal Health EDI Trading Partner IntegrationCardinal Health operates an EDI trading partner program for customers and suppliers covering pharmaceutical...13.9 Spinnaker Insurance (MGA Carrier Paper)Spinnaker is Hippo's affiliated specialty admitted carrier providing paper for MGAs and program administrat...12.7 US Foods EDI IntegrationUS Foods supports electronic data interchange (EDI) for B2B integration with suppliers and trading partners...12.6 QXO Account APIProvides access to customer account information including billing addresses, contacts, and other account de...12.0 QXO Order APIEnables customers to place material orders and track order status and deliveries within their own systems.12.0 QXO Pricing APIProvides real-time pricing information for single or multiple QXO products to simplify the process of gener...12.0

Minimal 6 Almost no public developer surface

Circle K PRO Business Fleet CardCircle K PRO Business Fleet Card is a commercial fleet fuel card with discounts at Circle K locations, acco...10.6 Heineken HEIWAY API PortalHeineken operates an internal API portal under its HEIWAY platform used for B2B and partner integrations (d...9.3 SOUNDRAW APIB2B HTTP API for generating royalty-free AI music at scale, supporting per-end-user music creation with sty...9.1 CF Industries EDI / B2B Supply ChainCF Industries exchanges orders, shipments, and invoices with distributors, rail carriers, and industrial cu...8.9 Burlington Stores EDIBurlington's ASC X12 version 4010 EDI trading-partner interface — the company's only documented machine-to-...8.0 xCBL — XML Common Business LibraryxCBL 4.0 is a royalty-free library of XML business documents and reusable components for business-to-busine...0.0

Companies reaching this through an API (31)

These companies publish an API, specification or operation carrying “B2B” 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.

Score breakdown

Frequency

59.0

log-scaled weighted occurrences

Breadth

1.5

spread across providers

Quality lift

55.7

mean composite of providers using it

Cohesion

32.1

strength of nearest seed neighbor

Where this tag comes from

Provider tag287

Api tag65

Openapi tag1

Openapi op tag2

Cohort brief

Auto-generated

The 260 providers in the APIs.io catalog tagged B2B, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

260

of 286 in the catalog

Mean Kin Score

23.3

+1.1 vs catalog 22.2

Mean Agent Readiness

13.4

+1.4 vs catalog 12

Spread

0–86.6

median 13.6 · σ 20.4

How the 260 split by band

Exemplar 9Strong 21Developing 35Thin 28Emerging 69Minimal 98

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	26.7	23.9	+2.8	260
Operational Transparency	14.7	13	+1.7	260
Contract Governance	7.4	6.5	+0.9	260
Contract Quality	17.4	17.2	+0.2	260
Developer Ergonomics	23.2	23.2	0	260
Discoverability	57.3	57.9	-0.6	260

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)	17%	13%	+4
MCP server (first-party)	16%	12%	+4
Agent Skills	0%	0%	0
OAuth scopes	16%	11%	+5
Security	99%	98%	+1
Arazzo workflows	5%	2%	+3
Governance rules	18%	16%	+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 ZoomInfo 86.6
2 Kinde 82.4
3 Mirakl 72.7
4 6sense 71.8
5 Lusha 71.2
6 Unify 70.1
7 G2 69
8 Live Direct Marketing 68.2
9 Resolve 67.6
10 Monite 66.3

Work with this as data

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

MCP server

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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 →

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The distribution (Pro)

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B2B

Providers using this tag (286)

APIs with this tag (62)