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

Optimizely Configured Commerce APIB2B commerce, formerly Insite Software. Three published documents — Admin API V1 (1,577 paths), Storefront ...75.1 Kraken Embed REST APIB2B integration API enabling partners to embed Kraken trading, custody, and Earn capabilities into their ow...70.6

Strong 6 Solid coverage with minor gaps

PropelAuth End-User API Keys APIBackend REST API for issuing, validating, listing, updating, and revoking end-user API keys that PropelAuth...65.9 M-Pesa (Safaricom Daraja) B2B APIThe B2B API from M-Pesa (Safaricom Daraja) — 2 operation(s) for b2b.64.3 Swisscom Smart Catalogs for NATEL go APIBusiness/wholesale provisioning API covering the full NATEL go mobile subscription procurement lifecycle — ...63.8 PortOne B2b APIThe B2b API from PortOne — 26 operation(s) for b2b.61.4 TrustRadius Downstream Intent Data APIDownstream intent activity — which accounts are researching a vendor's products, competitor products, and s...61.1 TrustRadius TrustQuotes Content Syndication APILicensed review-quote syndication. GET /trustquotes returns review excerpts with the quote text, a link and...61.1

Developing 16 Usable, with meaningful gaps to close

G2 API V2The G2 API V2 provides programmatic access to G2's software reviews, buyer intent signals, competitive inte...53.6 G2 Buyer Intent Data APIG2 Buyer Intent Data provides signals about companies actively researching software categories, products, a...53.6 G2 Data Solutions APIThe G2 Data Solutions API delivers enriched review data with flat attribute structures, intended for analyt...53.6 G2 MCP ServerThe G2 MCP (Model Context Protocol) Server enables AI assistants like Claude to access G2 data. Uses OAuth ...53.6 Auth0 My Organization APIOrganization-scoped endpoints for B2B customers to manage their own Organizations — IdP configuration, SCIM...53.4 Shell Aviation Fuel Reseller APIThe Shell Aviation Fuel Reseller API enables aviation fuel resellers and operators to manage fuel procureme...52.0 Microsoft Entra External ID APIAPI for managing customer and partner identity and access management.50.7 Axway B2BiAxway B2Bi is a B2B and EDI integration solution for automating partner data exchange. It supports EDI, AS2...50.0 Bell Canada Change Management APIBell's implementation of the TM Forum TMF655 Change Management Open API (Bell version v1.1, TMF655 v4.2), l...48.9 Bell Canada Service Order APIBell's implementation of the TM Forum TMF641 Service Ordering Management Open API (Bell version v1.4, TMF64...48.9 Bell Canada Trouble Ticket APIBell's implementation of the TM Forum TMF621 Trouble Ticket Open API (Bell version v2.5, TMF621 v4.1.1), le...48.9 SAP Trading Partner Management APIThe SAP Trading Partner Management API supports setup and management of B2B trading partner relationships, ...46.8 Ocean.io APIREST API for B2B company and people intelligence — 26 operations across search (v2 and v3 filter and lookal...44.7 Toksta Public APICredit-metered REST API for Toksta creator data, analysis jobs and SaaS workspace workflows. HTTP Bearer au...44.1 Hevn Inc B2B APIThe B2B API from Hevn Inc — 10 operation(s) for b2b.41.8 Informatica B2B Gateway REST APIThe B2B Gateway REST APIs enable running inbound and outbound partner flows, querying the status of events,...39.5

Thin 18 Limited public surface area

Orange Business API PlaceMarketplace surface for discovering Orange Business APIs — programmatic catalogue access for the Orange Bus...38.9 Orange Business Billing APIProgrammatic access to Orange Business Services M2M invoices, charges, and itemised usage records for enter...38.9 Orange Business Core Information APICustomer-facing inventory API for Orange Business Services — list contracts, sites, services, and product i...38.9 Orange Business Incident APIOpen, update, and track Orange Business Services support tickets via REST. Aligned with TM Forum TMF621 Tro...38.9 Orange Business Operator Eligibility (France) APICheck broadband and fibre eligibility at a French address for operator partners — feeds B2B onboarding flows.38.9 Orange Business Order Tracking APITrack the lifecycle and milestones of an Orange Business Services order — status, expected delivery, blocki...38.9 Orange Business Ordering APIPlace, modify, and cancel orders against the Orange Business Services product catalogue. Aligned with TM Fo...38.9 Orange Business RIP Operator Eligibility (France) APIPublic-initiative network (RIP) fibre eligibility check for French regional fibre rollouts, used by alterna...38.9 Heap Add Account Properties APIThe Heap Add Account Properties API allows developers to attach custom properties to account-level profiles...38.6 B2B Insurance Inquiry APIThe State Farm B2B Insurance Inquiry API is designed for lenders, mortgage servicers, and financial institu...37.9 B2B Insurance Inquiry APIThe State Farm B2B Insurance Inquiry API provides home and auto lenders with a programmatic way to verify t...36.4 B2B Lender Services APIThe State Farm B2B Lender Services API provides mortgage lenders and auto lenders with programmatic access ...36.4 Shipwire Purchase Order APICreate, edit, and cancel purchase orders in the Shipwire system for B2B fulfillment workflows. POs can be a...35.0 Ola Corporate APIThe Ola Corporate API enables large enterprises to automate employee and expense management on the Ola Corp...33.6 Xfactor.io Collaboration Manager APIThe buyer-facing collaboration surface — a separate login, and read access to a shared value proposition's ...33.0 Xfactor.io Value Proposition APIThe largest of the Xfactor.io platform services — 88 paths and 109 operations covering value propositions, ...33.0 Creed b2b APIThe b2b API from Creed — 1 operation(s) for b2b.30.1 Capterra Click Report APIThe Capterra Click Report API allows software vendors to programmatically retrieve historical click data fr...27.7

Emerging 29 Early or largely undocumented

Ariba Network APIEnables suppliers and buyers to exchange business documents and collaborate on the Ariba Network.26.1 xCBL — XML Common Business LibraryxCBL 4.0 is a royalty-free library of XML business documents and reusable components for business-to-busine...26.0 Levels Partner ProgramA "Partner With Us" program for clinics and partners surfaced in the Levels site footer. No partner-facing ...25.7 Qiwi Legal Entity PayoutsAPI for legal entities to issue payouts to wallets, cards, and bank accounts with batch and individual tran...25.2 Echo EDI IntegrationEcho supports system-to-system EDI integration alongside its REST APIs via the EchoSync platform, enabling ...23.7 Software Advice Reviews APISoftware Advice provides software review data, ratings, and recommendations through their platform. As a Ga...23.5 Mindtrip for BusinessPartnerships and integrations for destinations, DMOs, hotels, and travel suppliers to reach Mindtrip travel...22.7 AirgasAirgas provides industrial, medical, and specialty gases and related products. The Airgas online platform s...22.2 Alyce APIREST API for the Alyce corporate gifting platform enabling programmatic gift sending, recipient tracking, b...22.2 Sherwin-Williams EDI IntegrationSherwin-Williams EDI integration capabilities enable trading partners to exchange electronic data interchan...21.8 Sherwin-Williams Supplier APIThe Sherwin-Williams Supplier API enables B2B partners to integrate supply chain workflows, manage purchase...21.8 Riiid Partner SolutionsB2B / AI-as-a-Service (R.Inside) engagements that embed Riiid's adaptive learning and knowledge-tracing AI ...21.7 Tiffany & Co. Corporate Gifting PlatformTiffany & Co.'s B2B corporate gifting and recognition program platform, providing procurement and delivery ...20.1 Unit4 Access Point REST APIREST API for the Unit4 Access Point PEPPOL service enabling organizations to send and receive electronic bu...19.9 American Express @ Work B2B APIThe American Express @ Work B2B API is a suite of services that allows businesses to securely access their ...19.7 Sheetz EDI IntegrationSheetz Distribution Services EDI and API integration capabilities enable suppliers and trading partners to ...19.1 Spinnaker Insurance (MGA Carrier Paper)Spinnaker is Hippo's affiliated specialty admitted carrier providing paper for MGAs and program administrat...16.4 SOUNDRAW APIB2B HTTP API for generating royalty-free AI music at scale, supporting per-end-user music creation with sty...15.4 HTS Assist (Agentic AI Customer Service)Agentic AI built specifically for airline and travel customer service, delivering end-to-end autonomous res...14.4 HTS CarsCar rental e-commerce platform from HTS that partners embed for global car rental inventory and booking. Pa...14.4 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...14.4 HTS PackagesBundled flight + hotel package product from HTS. Partner-gated.14.4 HTS StaysHopper Technology Solutions lodging e-commerce platform that gives partners access to global hotel inventor...14.4 HTS Travel Loyalty Portals (Banks)Travel loyalty portals powering bank travel programs, used by partners such as Capital One Travel and RBC. ...14.4 QXO Account APIProvides access to customer account information including billing addresses, contacts, and other account de...13.3 QXO Order APIEnables customers to place material orders and track order status and deliveries within their own systems.13.3 QXO Pricing APIProvides real-time pricing information for single or multiple QXO products to simplify the process of gener...13.3 US Foods EDI IntegrationUS Foods supports electronic data interchange (EDI) for B2B integration with suppliers and trading partners...13.1 Cardinal Health EDI Trading Partner IntegrationCardinal Health operates an EDI trading partner program for customers and suppliers covering pharmaceutical...11.3

Minimal 3 Almost no public developer surface

CF Industries EDI / B2B Supply ChainCF Industries exchanges orders, shipments, and invoices with distributors, rail carriers, and industrial cu...10.5 Circle K PRO Business Fleet CardCircle K PRO Business Fleet Card is a commercial fleet fuel card with discounts at Circle K locations, acco...8.0 Heineken HEIWAY API PortalHeineken operates an internal API portal under its HEIWAY platform used for B2B and partner integrations (d...7.7

Score breakdown

Frequency

68.3

log-scaled weighted occurrences

Breadth

7.3

spread across providers

Quality lift

30.0

mean composite of providers using it

Cohesion

7.3

strength of nearest seed neighbor

Where this tag comes from

Provider tag233

Api tag74

Openapi tag2

Openapi op tag3

Cohort brief

Auto-generated

The 268 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

268

all scored

Mean Kin Score

24.9

+4.2 vs catalog 20.7

Mean Agent Readiness

12.8

+3.1 vs catalog 9.7

Spread

0.1–80.8

median 16 · σ 20.4

How the 268 split by band

Exemplar 10Strong 22Developing 38Thin 33Emerging 69Minimal 96

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	28.2	22.3	+5.9	268
Contract Quality	22.3	17.5	+4.8	268
Operational Transparency	15.7	11.3	+4.4	268
Developer Ergonomics	22.2	17.9	+4.3	268
Contract Governance	9.2	6.4	+2.8	268
Discoverability	62.4	60.4	+2	268

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)	22%	16%	+6
MCP server (first-party)	13%	7%	+6
Agent Skills	0%	0%	0
OAuth scopes	17%	9%	+8
Security	92%	88%	+4
Arazzo workflows	6%	2%	+4
Governance rules	19%	13%	+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 ZoomInfo 80.8
2 Optimizely 75.1
3 6sense 73.1
4 Commerce Layer 72.4
5 Lusha 71.7
6 Kraken 70.6
7 Seamless.AI 69.8
8 Mirakl 68.7
9 Koala 67
10 Unify 67

Work with this as data

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MCP server

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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

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curl "https://apis.io/api/v1/cohorts/tag/b2b"

The distribution (Pro)

curl "https://apis.io/api/v1/cohorts/tag/b2b/stats" \
  -H "X-API-Key: $APIS_IO_KEY"

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B2B

Providers using this tag (268)

APIs with this tag (74)