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

Stripe Revenue Recognition APIAutomate your accrual accounting process with Stripe Revenue Recognition. Import transaction data, set up r...83.2

Strong 11 Solid coverage with minor gaps

Yardi Virtuoso Connector (MCP)Yardi's first-party Model Context Protocol server, announced in early access on 2025-09-10 and described as...61.2 Yardi Voyager Standard InterfacesThe documented family of Voyager web-service interfaces that Yardi Canada clients and their vendors integra...61.2 Unified.to accounting APIThe accounting API from Unified.to — 38 operation(s) for accounting.60.4 Intuit APIsIntuit APIs provide developers with access to a wide range of services and functionalities to help them bui...59.2 QuickBooks Custom Fields APIThe QuickBooks Custom Fields API is a premium API that provides programmatic access to custom field definit...59.2 QuickBooks Desktop APIThe QuickBooks Desktop API allows developers to integrate with QuickBooks Desktop applications using qbXML ...59.2 QuickBooks Projects APIThe QuickBooks Projects API is a premium API that provides programmatic access to project data within Quick...59.2 QuickBooks Sales Tax APIThe QuickBooks Sales Tax API is a premium API that provides programmatic access to the automated sales tax ...59.2 Workday Accounting APIEndpoints for managing accounting journals.56.8 Xero Accounting APIThe Accounting API from Xero — 140 operation(s) for accounting.54.8 ConnexPay Accounting APIThe Accounting API from ConnexPay — 2 operation(s) for accounting.54.5

Developing 26 Usable, with meaningful gaps to close

Lone Wolf Back Office APIBrokerage back-office and accounting API covering the money side of the transaction — commissions, commissi...53.5 Oracle Fusion Cloud Financials REST APIREST APIs for viewing and managing data stored in Oracle Fusion Cloud Financials, including ERP processes, ...53.0 Factorial Finance and Banking APIBank accounts, transactions, ledger accounts, journal entries, tax rates and tax types, cost centers, cost ...52.8 Revolut Accounting APIManage [accounting settings](https://business.revolut.com/settings/accounting) for your business that can b...52.7 Fragment Ledger APIFragment's GraphQL Ledger API. Store a double-entry chart-of-accounts schema, create ledgers, post idempote...52.5 Arthur Financials APIRental financials - invoices, transactions, transaction payoff and recurring charges. Read and update only;...51.8 bexio Accounting APIThe Accounting API from bexio — 4 operation(s) for accounting.51.3 Defacto Accounting APIThe Accounting API from Defacto — 1 operation(s) for accounting.50.9 DealHub Subskribe APIThe subscription management, usage-based billing and revenue recognition API DealHub acquired with Subskrib...49.8 Deskera Books APIREST API for Deskera Books, the cloud ERP and accounting product — contacts, products, accounts, invoices, ...49.0 Mercado Pago Reports APIGenerate, configure, and download release / settlement / account-money reports for reconciliation and accou...47.5 Broadlume BMS APIREST API for Broadlume BMS, the flooring business management system formerly known as RollMaster. 256 docum...46.1 Expense Allocations APIManage allocation of expenses across multiple cost centers, projects, departments, or GL accounts. Supports...45.9 Quorum Royalty Accounting APIQuorum Royalty Accounting API enables access to royalty payment calculations, owner statements, suspense ma...45.8 Conta Azul APIREST/JSON API for the Conta Azul ERP, organized by functional area (Financeiro, Cobranças, Baixas, Vendas, ...44.4 UtilityAPI Accounting APICustomer billing accounts and billing summaries43.8 Dynamics 365 Finance & Operations APIAPI for managing financial operations, accounting, budgeting, and enterprise resource planning.43.0 DualEntry Public APIREST API for programmatic access to an organization's accounting data across setup (accounts, items, classi...42.6 BitPay Ledgers APIAccess account balance records by currency and track individual ledger entries.41.6 Sage 200 APISage 200 API provides REST access to Sage 200 Standard and Professional business management data including ...40.9 Sage 50 Accounts APISage 50 Accounts API enables desktop accounting integration for UK small businesses. Provides access to acc...40.9 Sage Intacct APISage Intacct provides both REST and XML APIs for advanced financial management including multi-entity conso...40.9 Propertyware Accounting APIResources providing access to accounting data such as general ledger accounts and financial transactions.40.8 Oracle General Ledger Journal Batches REST APIREST API for managing journal batches in Oracle Fusion Cloud General Ledger. The journal batches resource a...40.7 Botkeeper Platform APIBotkeeper's partner platform API. The company does not publish a reference, a portal or a specification for...40.4 AlayaCare Accounting APIREST API for financial operations within AlayaCare, including billing records, invoices, and accounting dat...39.7

Thin 29 Limited public surface area

Rutter Accounting APIAccounting data across platforms39.2 Rutter Accounting APIThe Rutter Accounting API provides a unified interface to read and write data to all major accounting platf...39.2 Investment Accounting APIThe State Street Investment Accounting API provides institutional clients with access to portfolio accounti...38.9 Viewpoint Construction ERP APIsThe Viewpoint suite of construction ERP APIs includes Jobpac Connect, Spectrum, and Vista. These REST and w...38.8 Zoho BooksThe Zoho Books API allows you to perform all the operations that you do with the web client. It is built us...38.5 Revert Accounting APIUnified accounting operations across Xero and QuickBooks37.6 Revelator Accounting APIRights contracts and payee management.34.9 Codat Accounting APIStandardized accounting data types.34.8 FreeAgent REST APIRESTful API for the FreeAgent cloud accounting platform. Provides full access to invoices, estimates, conta...34.6 Zenskar APIZenskar's REST API for billing, contracts, usage metering, invoicing, payments, credit notes, and accountin...34.4 Autopay Accounting APIThe Autopay Accounting API provides Autopay invoicing data to external accounting and ERP systems, enabling...33.7 Autopay Accounting APIInvoice export for accounting and ERP reconciliation33.7 Wave Financial GraphQL APIGraphQL API providing programmatic access to Wave accounting features including businesses, customers, invo...33.0 FreshBooks REST APIREST API for FreshBooks providing CRUD access to clients, invoices, estimates, expenses, projects, time ent...32.7 FreshBooks Webhooks (Callbacks API)Event delivery surface for the FreshBooks Callbacks API. Subscribers register an HTTPS endpoint, complete a...32.7 Infor CloudSuite Financials APIInfor CloudSuite Financials APIs provide integration with general ledger, accounts payable, accounts receiv...32.2 Murex Accounting APIAccounting entries and journal operations31.9 Picker accounting APIThe accounting API from Picker — 1 operation(s) for accounting.31.8 QuickBooks Online Accounting APIREST API for the QuickBooks Online accounting platform, exposing accounting objects such as Invoice, Custom...30.3 Exact Online REST / OData APIREST and OData API (v1) for Exact Online covering financials, sales, purchasing, inventory, HRM, CRM, proje...29.7 Zoho Invoice APIREST API for managing organizations, contacts, items, invoices, estimates, credit notes, recurring invoices...29.0 Holded Accounting APIThe Accounting API from Holded — 1 operation(s) for accounting.28.5 Holded REST APIREST API for managing invoicing, contacts, products, accounting, projects, employees, and CRM records insid...28.5 Lido Reward History APIRead-only HTTP API returning a per-address stETH reward history including USD/EUR/GBP fiat conversions, wit...28.2 Clear Books REST APIRESTful API for integrating with Clear Books accounting software to manage invoices, payments, contacts, ba...27.5 MYOB Business APIREST-based cloud API for MYOB AccountRight, MYOB Essentials, and MYOB Business. Provides endpoints for mana...27.0 RealPage Financial Management & AccountingAccounting and financial management products covering general ledger, payables, receivables, and reporting ...26.7 MRI Information Exchange (MIX) APIAn open and connected ecosystem of secure REST APIs built by MRI and its partners that enables controlled d...26.6 Sage Accounting v3.1 REST APIREST API for Sage Business Cloud Accounting providing access to contacts, sales invoices, sales credit note...26.5

Emerging 26 Early or largely undocumented

Oracle General Ledger APIAPI for managing general ledger operations including journals, budgets, and financial reporting.25.3 Tryton REST APIRESTful API for Tryton ERP providing access to all business modules including financial accounting, stock/i...24.5 Numeric MCP APIOAuth-protected Model Context Protocol server exposing Numeric's close-automation toolkit to AI agents. Str...24.3 Rent Manager Web APIThe Rent Manager Web API (WAPI12) is a RESTful API that provides both read and write access to the Rent Man...23.9 Sage Intacct REST APIModern REST API for Sage Intacct using OAuth 2.0 Bearer token authentication. Provides standard HTTP verbs ...23.3 Sage Intacct XML APILegacy XML API providing programmatic access to general ledger, accounts payable, accounts receivable, orde...23.3 Sage Intacct REST APIModern REST API for Sage Intacct's cloud accounting and financial management platform covering general ledg...22.0 Sage Intacct XML APILegacy XML-based API for Sage Intacct accounting and financial management, providing broad coverage of ever...22.0 AutoLeap Payments & Purchasing APIRead payments taken against repair orders for reconciliation and financial reporting, plus read purchase or...21.8 TenantCloud APIREST API for managing rental properties, tenants, leases, maintenance requests, accounting, and online rent...21.8 Certinia Accounting (ERP) APICertinia Accounting Apex API (namespace prefix CODAAPI) for core financials - sales and purchase invoices, ...21.2 DoorLoop APIREST API for DoorLoop property management software. Provides access to properties, units, leases, tenants, ...21.0 RightRev REST APIRightRev's REST (and GraphQL) API for revenue recognition — transaction ingestion (orders, invoices, events...20.9 Open Connected Banking PlatformOpen's flagship SMB neobanking application. Connects one or more partner-bank current accounts (ICICI, SBI,...20.4 Qualia Accounting and Escrow APIPull accounting and escrow data across files for custom reporting and executive-level performance dashboard...20.2 Dealertrack Opentrack DMS Data APIReal-time, bidirectional read access to Dealertrack DMS data through the Opentrack third-party integration ...19.0 Dealertrack Opentrack DMS Write-Back APIReal-time, bidirectional write access to the Dealertrack DMS through Opentrack. Certified vendors can push ...19.0 QuickBooks Online Accounting APIREST API for managing QuickBooks Online accounting entities including Customer, Vendor, Employee, Item, Inv...18.1 Calypso Post-Trade Processing APIEnables integration with Calypso back-office processing capabilities including trade comparison, netting, s...17.3 Buildium Accounting & General Ledger APIManages chart of accounts, journal entries, bills, bill payments, bank accounts, and general-ledger transac...16.4 QuickBooks Tax APIQuickBooks Online API provides access to tax-related financial data including income, expenses, and payroll...15.8 Xero Tax APIXero's Tax API enables accounting software and tax providers to connect to Xero for seamless tax return pre...15.8 Reynolds Accounting APIDealership accounting data in the Reynolds DMS - general ledger entries, accounts receivable and payable, c...15.2 NetSuite SuiteTalk SOAP Web ServicesLong-standing SOAP-based integration API to NetSuite accounting records and business logic, suitable for bu...14.1 Thomson Reuters Checkpoint APICheckpoint Search API provides access to Thomson Reuters Checkpoint tax and accounting research content inc...13.7 Airbase GL & Accounting Sync APIRead and push general-ledger coding and accounting records so spend stays in sync with the ERP/GL. Airbase ...13.4

Minimal 1 Almost no public developer surface

ResWare Accounting APIModeled logical service area for escrow accounting - trust ledgers, receipts and disbursements, reconciliat...8.4

Score breakdown

Frequency

69.7

log-scaled weighted occurrences

Breadth

7.4

spread across providers

Quality lift

32.8

mean composite of providers using it

Cohesion

15.8

strength of nearest seed neighbor

Where this tag comes from

Provider tag227

Api tag93

Openapi tag16

Openapi op tag68

Cohort brief

Auto-generated

The 269 providers in the APIs.io catalog tagged Accounting, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers

269

all scored

Mean Kin Score

27.2

+6.5 vs catalog 20.7

Mean Agent Readiness

13.6

+3.9 vs catalog 9.7

Spread

1.5–83.2

median 24.6 · σ 16

How the 269 split by band

Exemplar 2Strong 12Developing 53Thin 64Emerging 95Minimal 43

Facet averages, against the whole catalog

Facet	This cohort	Catalog	Difference	Scored
Access Clarity	34	22.3	+11.7	269
Contract Quality	24.3	17.5	+6.8	269
Operational Transparency	16.5	11.3	+5.2	269
Developer Ergonomics	23.1	17.9	+5.2	269
Discoverability	65.4	60.4	+5	269
Contract Governance	7.9	6.4	+1.5	269

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)	24%	16%	+8
MCP server (first-party)	10%	7%	+3
Agent Skills	0%	0%	0
OAuth scopes	19%	9%	+10
Security	96%	88%	+8
Arazzo workflows	4%	2%	+2
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 Stripe 83.2
2 Pennylane 66.5
3 Yardi Canada 61.2
4 Unified.to 60.4
5 Intuit 59.2
6 Datarails 57.7
7 Ledge 57.6
8 Workday 56.8
9 Dext 56
10 Xero 54.8

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Accounting

Providers using this tag (269)

APIs with this tag (94)