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 8 Complete, well-documented, and agent-ready

Airwallex Platform APIThe Airwallex Platform API enables businesses to embed financial services into their products. Supports mer...91.4 Healthcare.gov Marketplace APIThe Healthcare.gov Marketplace API and accompanying Open Data Plan Finder exposes Qualified Health Plan (QH...81.3 Kraken NFT APIREST API for Kraken's NFT marketplace surfaces: collections, asset lookups, listings, offers, watchlist, an...74.5 Twilio Marketplace APIThe Marketplace API from Twilio — 8 operation(s) for marketplace.72.9 Browser Use Public API v2The step-priced Browser Use Cloud REST API — tasks and task logs, sessions with public share links, presign...69.1 Telr Accounts and Split Payments APIMarketplace / split-payment Service API for sub-merchant onboarding, multi-split payments, debit/credit of ...67.5 Azure DevOps Extension Management APIAPI for managing extensions installed in an Azure DevOps organization. Enables programmatic listing, instal...67.4 Matomo Marketplace APIThe Marketplace API lets you manage your license key so you can download & install in one-click 66.7

Strong 16 Solid coverage with minor gaps

S&P Global MarketplaceData and analytics catalog spanning S&P Global business units (Market Intelligence, Ratings, Commodity Insi...65.7 Nexla Marketplace APIOperations for managing the marketplace domains and items.64.1 Clay IntegrationsCatalog of native connectors and 150+ data providers — Salesforce, HubSpot, Pipedrive, Apollo, Clearbit, Zo...63.7 Eclipse Marketplace APIREST API for accessing Eclipse Marketplace data including listings, categories, favorites, and installation...61.5 Zendesk Apps APIThe Zendesk Apps API lets you manage apps installed on your Zendesk account. It lists all public apps on th...61.1 HyperPay HyperSplitHyperSplit distributes a single collected payment across multiple sub-merchants or beneficiaries for market...60.6 Oracle Marketplace APIThe Marketplace API from Oracle — 21 operation(s) for marketplace.60.2 PixieBrix Marketplace APIThe marketplace API from PixieBrix — 3 operation(s) for marketplace.60.0 Nursa Marketplace APIThe Marketplace API from Nursa — 6 operation(s) for marketplace.59.7 Hyperbolic GPU Marketplace APIDecentralized on-demand GPU compute marketplace renting idle H100, H200, A100, and RTX 4090 capacity from t...59.4 Second Life Marketplace Automatic Notification SystemAn outbound webhook that forwards information about every sale made on the Second Life Marketplace to a mer...59.1 Coinflow marketplace APIThe marketplace API from Coinflow — 11 operation(s) for marketplace.58.7 Databricks Providers APIThe Databricks Providers API is part of Delta Sharing and allows you to create, update, list, and delete da...58.3 Open Service Broker APIThe Open Service Broker API is the open specification originally developed by Cloud Foundry and now used by...56.2 Vercel WebhooksVercel Webhooks deliver platform events to a subscriber-configured HTTPS endpoint via HTTP POST with a JSON...56.1 Azure Virtual Machine Images REST APIREST API for listing and querying available virtual machine images in Azure, including platform images, mar...54.4

Developing 41 Usable, with meaningful gaps to close

Thin 44 Limited public surface area

KW Marketplace Subscription & Metered Billing APIThe partner-facing surface behind the KW Marketplace, where vendors sell products to Keller Williams agents...38.8 SAP Ariba Discovery RFx Publication FROM External Marketplace APIImports RFx opportunities from external marketplaces into SAP Ariba.38.4 SAP Ariba Discovery RFx Publication TO External Marketplace APIPublishes RFx opportunities to external marketplaces for broader supplier discovery.38.4 SAP Ariba Public Catalogs Shop APIManages public marketplace catalog experiences for procurement users.38.4 SuperRare Smart Contracts - The BazaarUnified marketplace and auction house smart contract on Ethereum that enables reserve-price auctions, sale ...37.7 uShip API v2The core uShip marketplace API — a RESTful, hypermedia-driven JSON API over the shipment lifecycle: searchi...36.7 uShip Cars and Light Trucks APIThe vehicle-transport slice of the uShip API — listing creation, published rates, and booking for cars and ...36.7 uShip Integrator Users APIUser-management endpoints for integration partners — provisioning and managing the uShip user accounts an i...36.7 Eightfold App MarketplaceMarketplace of certified partner and customer-built applications that extend the Eightfold Talent Intellige...36.6 Wolt Order / Marketplace APIReceive and fulfill consumer marketplace orders in a POS/in-store system: accept, reject, mark ready, mark ...36.3 Manifold Marketplace ContractsSmart contract system powering Manifold Gallery listings and Marketplace Widgets. Supports Auction Listings...35.9 Manifold Royalty RegistryOn-chain smart contract registry that serves as a single source of truth for NFT royalties across all major...35.9 S&P Global Marketplace Catalog APIAPI providing programmatic access to the S&P Global Marketplace catalog of premium fundamental and alternat...35.3 Pagar.me Recipients APIOnboard and manage recipients (recebedores) — the sub-merchants that receive split payments in a marketplac...34.9 Pagar.me Settlements APIRetrieve settlements (pagamentos) — the actual money movements out of Pagar.me to recipients — individually...34.9 Pagar.me Transfers APICreate, cancel, list, and retrieve transfers from a recipient's Pagar.me balance to their registered bank a...34.9 PagBank Marketplace / Split APIPayment-division (split) settlement for marketplaces and platforms. Splits a single charge across multiple ...34.7 Flipkart Marketplace Seller APIThe Flipkart Marketplace Seller API (v3) lets sellers and integration partners manage listings, orders, shi...34.4 QuickNode Marketplace Add-onsCatalog of opt-in add-on APIs (NFT API, Token API, DeFi API, Functions, etc.) attached to a QuickNode endpo...34.4 SmartRecruiters Assessment APIThe Assessment API allows customers to order assessment services available through the SmartRecruiters Mark...34.4 Lemonway APIREST API for marketplace payment infrastructure including pay-in, pay-out, wallet management, KYC/KYB onboa...34.0 Zeabur Services APICreate services from git repositories, uploaded zips, Dockerfiles, or prebuilt marketplace codes; restart, ...33.0 Zeabur Templates & Regions APIList and retrieve deploy templates, deploy a template spec into a project, create and update custom templat...33.0 Freshdesk App SDKThe Freshdesk App SDK allows developers to build custom applications that extend the functionality of the F...32.0 Reservoir NFT APIAll-in-one NFT data and trading API enabling developers to get NFT data, create orders, and execute trades ...31.9 Blender Extensions PlatformThe Blender Extensions Platform (extensions.blender.org) provides a curated repository of addons, themes, a...30.8 JetBrains Marketplace APIREST API for listing available plugins, uploading new plugin builds, and downloading plugin updates from th...30.8 Godot Asset Library APIThe Godot Asset Library REST API powers the community asset browser inside the Godot editor (AssetLib tab) ...30.6 Zentail Open APIZentail's Open API for building custom sales-channel, inventory, and fulfillment integrations and running b...30.5 Glama MCP Server RegistryComprehensive index of 23,000+ MCP servers, 4,000+ managed connectors, and 169,000+ tools spanning 86 curat...30.3 iCIMS Marketplace Integrations APIThe iCIMS Marketplace Integrations API enables certified partners to build, publish, and manage integration...30.2 Raycast StoreThe Raycast Store distributes community and partner extensions. Publishing is done via the `ray` CLI and a ...30.0 SoftwareOne Marketplace Platform APIThe SoftwareOne Marketplace Platform API provides programmatic access to the marketplace catalog, enabling ...29.8 Newegg Marketplace APISeller integration API for the Newegg marketplaces covering item, order, shipping-label, RMA, datafeed, rep...29.1 Tokopedia / TikTok Shop Open PlatformFollowing GoTo's 2024 divestment of Tokopedia's e-commerce operations to TikTok Shop, integrations for what...28.8 Visual Studio Marketplace APIThe Visual Studio Marketplace API provides access to the extension marketplace for Visual Studio, VS Code, ...28.5 Getnet Marketplace APIPayment processing for multi-seller platforms: sub-seller onboarding, card capture (Visa, Mastercard, Elo, ...28.3 Perpay Marketplace Checkout APIInternal REST API that powers checkout on the Perpay Marketplace. Handles product ordering, spending-limit ...28.2 Iugu APIRESTful API providing 140+ endpoints for payment processing, customer management, invoicing, subscriptions,...27.9 Arkham Intel Exchange (Dreadnought)Marketplace where users post and claim bounties for deanonymising specific addresses or unmasking activity....27.8 Envato Market APIREST API for ThemeForest, CodeCanyon, AudioJungle, VideoHive, GraphicRiver, 3DOcean, and PhotoDune. Endpoin...27.4 Lendio Loan Marketplace APIREST API for connecting small businesses with lenders. Supports loan application submission, eligibility ch...26.8 Amazon Selling Partner API (SP-API)REST API that lets approved developers and sellers manage Amazon Selling Partner accounts including catalog...26.6 PagBank Connect APIOAuth 2.0 authorization API enabling platform integrations (SaaS and marketplace models) to connect applica...26.5

Emerging 40 Early or largely undocumented

Toss Payments Payouts APIAPI for marketplace and platform operators to disburse funds to registered sellers. Supports seller registr...25.7 Qualia Connect and Marketplace APIProgrammatic access to Qualia's national network of technology-enabled independent title agents and Marketp...24.3 Unreal Plugins and Fab MarketplaceUnreal Engine has a first-class plugin architecture and a content and code marketplace. The historical Unre...24.2 EnergyHub Marketplace APIThe Marketplace API integrates the Mercury/Edge DERMS platform with utility marketplace providers and onlin...23.9 Wave Aggregated Merchants APISub-merchant management API for aggregators, payment service providers, and platforms that accept Wave paym...23.9 FBN Direct Inputs MarketplaceFBN Direct is the member-facing ecommerce marketplace offering 7,200+ crop protection, seed, fertilizer, li...22.7 FBN Direct MarketplaceDirect-to-farmer e-commerce marketplace for crop inputs - seed, crop protection, adjuvants, and animal heal...22.7 Coupang Open APIThe Coupang Open API is a RESTful seller (vendor) API for managing the full marketplace lifecycle including...21.8 Shipping.com Rate Intelligence PlatformShipping.com provides a marketplace and intelligence platform for the ocean freight and logistics industry....21.6 Houzz Seller & Vendor Commerce APIOfficial Houzz commerce API for third-party marketplace partners. Lets sellers and vendors sync product cat...21.0 Ronin Market Partner APIPartner API for NFT creators on Ronin Market - notably an NFT metadata refresh endpoint that lets approved ...20.4 Meesho Supplier / Order-Management APIPartner-gated API for onboarded Meesho suppliers and integration partners to sync catalog and inventory, fe...20.2 Apartments.com NetworkResidential rental marketplace network including Apartments.com, ForRent.com, and Westside Rentals, providi...19.4 BizBuySellOnline marketplace for buying and selling small and mid-sized businesses, with broker tools and financing p...19.4 Domain GroupAustralian residential real estate marketplace and media company in which CoStar Group acquired a majority ...19.4 Gem Integrations MarketplaceIntegrations directory covering ATS, sourcing sites, productivity, HRIS & onboarding, scheduling, backgroun...19.4 Homes.comResidential for-sale and rental marketplace operating agent-first branding and search, paired with the Home...19.4 Land.com / Lands of AmericaLand-for-sale marketplace network covering rural, ranch, recreational, and development land in the United S...19.4 LoopNetThe largest commercial real estate marketplace in the United States, surfacing CRE listings for sale and le...19.4 OnTheMarketUK residential property portal acquired by CoStar Group, providing for sale and to let listings with agent ...19.4 Asaas Escrow Accounts APIHold funds in escrow ("contas de garantia") until a release condition is met, with API-driven release or re...19.1 Asaas Split Payments APIConfigure split rules on a charge so that the net amount is automatically distributed across one or more wa...19.1 KaBuM! Marketplace Seller Integration APIREST API for third-party sellers and integrators to connect to the KaBuM! marketplace (operated on the Mira...18.7 LiqPay Payouts APIAPI for merchant-initiated payouts (credit transfers) to customer cards or accounts. Used for marketplace d...18.3 Aramisauto Vehicle Catalog ContractsAramis Group publishes the machine-readable contracts behind the Aramisauto vehicle catalog as ten JSON Sch...18.2 Cline MCP MarketplaceMarketplace for MCP servers/tools that extend the Cline agent.16.7 ADPADP is the largest payroll and HCM provider with the ADP Marketplace and ADP Workforce Now / Run / Vantage ...16.4 BAXUS API (BoozApp / Marketplace)The BAXUS backend service (NestJS) that powers the marketplace and BoozApp: bottle and listing search, mark...16.2 ShopSimon Retailer APIShopSimon is Simon's e-commerce platform integrating online and offline retail. The ShopSimon Retailer Hub ...16.2 OLX Poland Partner APIOAuth2 partner API for OLX Poland (olx.pl) that lets integrators manage classified adverts (list, create, u...15.9 Agrofy Marketplace APIAgrofy Developers is the company's marketed partner-integration program for marketplace sellers — listing m...15.4 Siemens Healthineers Digital MarketplaceCurated catalog distributing Siemens Healthineers and partner clinical and operational applications across ...15.3 TikTok Shop Open APIRESTful Open API for managing TikTok Shop seller accounts, products, orders, fulfillment, returns and refun...14.7 LevelTen Energy Marketplace APIThe authenticated API behind the LevelTen Energy Marketplace. The host at api.levelten.energy self-identifi...14.5 Mercado Libre Platform APICore REST API for the Mercado Libre marketplace covering items, categories, search, orders, questions, mess...14.4 FedMallDoD procurement marketplace operated by DLA where authorized buyers from federal, state, local, tribal, and...14.2 Insurify Consumer MarketplaceConsumer comparison platform pulling real-time quotes from 120+ carriers, with AI-powered declaration page ...13.1 Zyla API HubZyla API Hub provides a centralized marketplace for discovering, testing, and integrating thousands of APIs...11.9 Limepay Platform APIREST API for platform and marketplace integrations to onboard and manage sub-merchants: create platform mer...11.7 EcoVadis Marketplace APIThe EcoVadis Marketplace API is a specialized instrument crafted to exchange mission-critical sustainabilit...11.6

Minimal 1 Almost no public developer surface

Bukalapak REST APIBukalapak's public REST API for marketplace resources such as products and the authenticated user profile, ...9.7

Unrated 1 Not yet scored

Sears Marketplace Seller APIVersioned XML-over-HTTPS API for third-party sellers on Sears Marketplace (Sears.com, Kmart.com, ShopYourWa...

Companies reaching this through an API (82)

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

4Paradigm Adobe Creative Cloud Airwallex Akash Network AlayaCare Ariba Arkham Intelligence Artera Asaas Automattic Azure DevOps Azure Virtual Machines Blender Browser Use Centene Centers for Medicare and Medicaid Services Clay Cline Clio Cloud Foundry CoreStory CoStar Group Databricks Dedalus Labs Defense Logistics Agency Eaton Ecovadis Eightfold AI EnergyHub Factorial Forsta Fortanix Freshdesk Gala Games Gem Glama Godot Engine Google Workspace GoTo Group (Gojek + Tokopedia) Help Scout HR & People HyperPay iCIMS Kraken LiqPay Matomo Mercado Pago Microsoft Visual Studio MuleSoft Nexla

Show all 82 companies ↓

Score breakdown

Frequency

83.5

log-scaled weighted occurrences

Breadth

25.3

spread across providers

Quality lift

18.8

mean composite of providers using it

Cohesion

14.9

strength of nearest seed neighbor

Where this tag comes from

Provider tag919

Api tag154

Openapi tag21

Openapi op tag109

Cohort brief

Auto-generated

The 809 providers in the APIs.io catalog tagged Marketplace, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

809

all scored

Mean Kin Score

17.2

-6.7 vs catalog 23.9

Mean Agent Readiness

7.1

-4.9 vs catalog 12

Spread

1.2–72.3

median 12.4 · σ 14

How the 809 split by band

Exemplar 5Strong 13Developing 65Thin 87Emerging 306Minimal 333

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Discoverability	58.1	61.2	-3.1	809
Contract Governance	2.9	6.4	-3.5	809
Access Clarity	22.8	26.5	-3.7	809
Operational Transparency	7.7	13.9	-6.2	809
Developer Ergonomics	14.8	23.4	-8.6	809
Contract Quality	10.2	19.8	-9.6	809

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)	4%	10%	-6
MCP server (first-party)	8%	13%	-5
Agent Skills	0%	0%	0
OAuth scopes	7%	11%	-4
Security	95%	96%	-1
Arazzo workflows	1%	2%	-1
Governance rules	4%	14%	-10

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 Efí Pay (Gerencianet) 72.3
2 ZnanyLekarz 71.2
3 Mirakl 70.7
4 Instacart 70.5
5 Immutable 69.1
6 Vendasta 66
7 Etsy 63.1
8 Eclipse Foundation 61.5
9 Walmart 60.8
10 Nursa 59.7

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/marketplace"

All tags

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As a scored cohort

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

The distribution (Pro)

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

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Marketplace

Providers using this tag (916)

APIs with this tag (151)