established · 0.6 capability resource

Bills

Score 24.7 / 100 41 providers 46 APIs Search apis.io →
Variants seen in the corpus: Billsbills

Providers using this tag (41)

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

Strong 9 Solid coverage with minor gaps
CurlecCompanyPaymentsPayment GatewayRecurring Payments30 APIs66.3Float FinancialSpend ManagementCorporate CardsExpense ManagementAccounts Payable1 API61.8MewsHospitalityHotelPMSProperty Management78 APIs60.4GSMATelecommunicationsUnited KingdomStandardsTrade Association18 APIs59.8MewsHospitalityHotelProperty ManagementPMS79 APIs58.7CoperniqCompanyClimateSolarConstruction28 APIs58.1MVMNTFreightLogisticsTransportation Management SystemSupply Chain27 APIs57.3Vic.aiCompanyFintechAccounts PayableInvoicing33 APIs56.7ApideckIntegrationUnified-API54 APIs55.9
Developing 15 Usable, with meaningful gaps to close
RampFinanceSpend ManagementCorporate CardsExpense Management11 APIs53.0RilletCompanyFintechERPAccounting28 APIs49.4Rubicon ProjectCompanyAdvertisingAdTechProgrammatic Advertising4 APIs48.6PuzzleCompanyAccountingFinancialBookkeeping22 APIs48.4Zoho InventoryInventory ManagementWarehousingSales OrdersPurchase Orders37 APIs46.6ClioBillingCalendaringDocument-ManagementLaw Firms85 APIs46.5Congress.gov APIGovernmentLegislativeCongress20 APIs46.1UtilityAPIEnergyUtilitiesGreen ButtonBilling Data9 APIs43.8ActionstepLegalPractice ManagementLaw FirmMatters35 APIs43.2FiscalNoteGovernmentLegislationPolicyPolitical Intelligence13 APIs42.0BILLAccounts PayableAccounts ReceivableSpend ManagementExpense Management11 APIs41.8BitPayCryptocurrencyPaymentsBitcoinBlockchain13 APIs41.6PropertyMeReal-EstateAustraliaProperty ManagementRentals11 APIs41.4PropertywareProperty ManagementReal-EstateRental PropertiesSingle-Family Rentals14 APIs40.8MelioB2B PaymentsAccounts PayableAccounts ReceivableBill Pay1 API39.6
Thin 11 Limited public surface area
SmartrrSubscriptionLoyaltyShopifyE-Commerce6 APIs38.2Limble CMMSCMMSMaintenance ManagementAsset ManagementManufacturing43 APIs37.9US House of RepresentativesFederal-GovernmentLegislationCongressLegislative Data6 APIs37.0MercoaMercoaEmbedded FinanceAccounts PayableAccounts Receivable10 APIs35.4Open StatesGovernmentLegislative DataCivic TechnologyState Legislature7 APIs34.4CMS EnergyElectricEnergyGreen ButtonMichigan6 APIs33.7Bayou EnergyUtility DataEnergyUtility BillsInterval Data4 APIs32.5PrestmitCryptoFintechGift Cards7 APIs31.1Library of CongressCultural HeritageFederal-GovernmentLibraryLegislative12 APIs31.0MYOBAccountingBusiness ManagementInvoices1 API27.0MewsHospitalityHotelsPMSProperty Management75 APIs26.6
Emerging 6 Early or largely undocumented
MeowCompanyBanking26 APIs24.8GovTrackGovernmentLegislativeCongress1 API23.7LegiScanLegislative TrackingGovernmentVoting Records3 APIs23.7BuildiumProperty ManagementResidentialCommunity AssociationsAccounting13 APIs16.4AirbaseSpend ManagementAccounts PayableBill PayProcurement9 APIs13.4Public SectorPublic SectorGovernmentFederalStates21 APIs11.1

APIs with this tag (46)

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 →

Strong 10 Solid coverage with minor gaps
Curlec Bills APIRazorpay Billme digital receipts and bills for retail, food & beverage, events, and ecommerce.66.3Float Public APIREST API (OpenAPI 3.1.0, 71 operations across 47 paths) for automating accounting and reporting against Flo...61.8Mews Bills APIThe Bills API from Mews — 6 operation(s) for bills.60.4GSMA Mobile Money APIThe GSMA Mobile Money API is a harmonised REST/JSON specification for mobile money platforms, developed by ...59.8Mews Bills APIThe Bills API from Mews — 6 operation(s) for bills.58.7Mews POS APIThe Mews POS API gives partner point-of-sale systems real-time access to Mews POS data and services so that...58.7Coperniq bills APIThe bills API from Coperniq — 3 operation(s) for bills.58.1MVMNT Bills APIAP bill management operations. Bills represent carrier and vendor invoices to be paid.57.3Vic.ai Bills APIBills are imported invoices that can be created and updated through the API. These operations allow you to ...56.7Apideck Bills APIA Bill represents an invoice from a supplier, including line items, amounts, due date, payment status, and ...55.9
Developing 16 Usable, with meaningful gaps to close
Ramp Bills APIBill pay records and approval workflows.53.0Rillet Bills APIThe Bills API from Rillet — 2 operation(s) for bills.49.4ClearLine APIClearLine is Magnite's direct buy-side activation platform for advertisers and agencies, running on the sam...48.6SpringServe UI API (v0)The original v0 REST API for SpringServe, still fully supported and documented alongside v1 while Magnite b...48.6SpringServe UI API (v1)The v1 REST API for SpringServe, Magnite's ad-serving and CTV/streaming ad-server platform. 379 operations ...48.6Puzzle Bills APIThe Bills API from Puzzle — 3 operation(s) for bills.48.4Zoho Inventory bills APIBills Module46.6Clio Bills APIBills are statements of what a user’s client owes for their services over a particular billing period, incl...46.5UtilityAPI Bills APIUtility billing information43.8Actionstep Bills APIThe Bills API from Actionstep — 1 operation(s) for bills.43.2FiscalNote Bills APIAccess legislation and bill data from federal, state, and international jurisdictions.42.0BILL Bills APIThe Bills API from BILL — 4 operation(s) for bills.41.8BitPay Bills APIManage payment requests sent to specific buyers with fixed-price line items.41.6PropertyMe Bills APICreate a new bill in a connected PropertyMe portfolio, including the supporting document, against the trust...41.4Propertyware Bills APIResources providing access to bills and bill payments.40.8Melio Payments APIREST API for managing bills, vendors, payment methods, and scheduling payments. Supports ACH transfers, che...39.6
Thin 10 Limited public surface area
Smartrr Bills APIRecurring bills (subscription transactions) and their retry / cancel lifecycle.38.2Limble CMMS Bills APIThe Bills API from Limble CMMS — 9 operation(s) for bills.37.9US House of Representatives Bills APILegislative bills and resolutions37.0Mercoa APIREST API and SDK suite for embedding accounts payable and accounts receivable into vertical SaaS platforms....35.4Open States bills APIThe bills API from Open States — 3 operation(s) for bills.34.4CMS Energy Bills APIThe Bills API from CMS Energy — 1 operation(s) for bills.33.7Bayou Energy Bills APIThe Bills API from Bayou Energy — 4 operation(s) for bills.32.5Library of Congress Bills APIThe Bills API from Library of Congress — 3 operation(s) for bills.31.0MYOB Business APIREST-based cloud API for MYOB AccountRight, MYOB Essentials, and MYOB Business. Provides endpoints for mana...27.0Mews Bills APIThe Bills API from Mews — 6 operation(s) for bills.26.6
Emerging 10 Early or largely undocumented
Meow Bills APIView and manage bills for vendor payments.24.8GovTrack REST APIRead-only REST API providing access to U.S. Congressional data including bills and resolutions, roll call v...23.7LegiScan Bulk Dataset APIThe LegiScan Bulk Dataset API provides access to weekly snapshot ZIP archives containing all getBill, getRo...23.7LegiScan Pull APIThe LegiScan Pull API is an RPC-style JSON service that allows clients to query the national legislative da...23.7LegiScan Push APIThe LegiScan Push API is a paid subscription service that delivers real-time legislative updates to a clien...23.7Buildium Accounting & General Ledger APIManages chart of accounts, journal entries, bills, bill payments, bank accounts, and general-ledger transac...16.4Airbase Bills & AP Automation APIProgrammatically create, list, retrieve, and update bills and vendor invoices flowing through Airbase's AP ...13.4GovInfo APIU.S. Government Publishing Office (GPO) GovInfo developer hub. The Collections API at api.govinfo.gov deliv...11.1GovTrackGovTrack.us civic-tech site tracking U.S. Congress — bills, votes, members, committees, congressional distr...11.1OpenStates API (Plural Policy)OpenStates v3 REST API at v3.openstates.org, operated by Plural Policy, providing JSON access to U.S. state...11.1

Score breakdown

Frequency
54.2
log-scaled weighted occurrences
Breadth
1.1
spread across providers
Quality lift
49.6
mean composite of providers using it
Cohesion
6.5
strength of nearest seed neighbor

Related tags

Vendors 13 co-occurrences Committees 5 co-occurrences Bill Pay 6 co-occurrences Departments 6 co-occurrences Accounts Payable 8 co-occurrences Invoices 15 co-occurrences Purchase Orders 5 co-occurrences Currency 6 co-occurrences

Where this tag comes from

Api tag42
Provider tag7
Openapi tag26
Openapi op tag114

Cohort brief

Auto-generated

The 41 providers in the APIs.io catalog tagged Bills, scored on the Kin Score. Every figure below is computed from the catalog — nothing here is written.

Providers
41
all scored
Mean Kin Score
41.1
+20.4 vs catalog 20.7
Mean Agent Readiness
25.6
+15.9 vs catalog 9.7
Spread
11.1–66.3
median 41.6 · σ 13.6
How the 41 split by band
Exemplar 0Strong 9Developing 15Thin 11Emerging 6Minimal 0
Facet averages, against the whole catalog
FacetThis cohortCatalogDifferenceScored
Contract Quality 50 17.5 +32.5 41
Access Clarity 43.6 22.3 +21.3 41
Operational Transparency 27.6 11.3 +16.3 41
Developer Ergonomics 31.8 17.9 +13.9 41
Discoverability 73.1 60.4 +12.7 41
Contract Governance 14 6.4 +7.6 41

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) 24% 16% +8
MCP server (first-party) 12% 7% +5
Agent Skills 0% 0% 0
OAuth scopes 24% 9% +15
Security 100% 88% +12
Arazzo workflows 7% 2% +5
Governance rules 41% 13% +28

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 Curlec 66.3
  2. 2 Float Financial 61.8
  3. 3 Mews 60.4
  4. 4 GSMA 59.8
  5. 5 Mews 58.7
  6. 6 Coperniq 58.1
  7. 7 MVMNT 57.3
  8. 8 Vic.ai 56.7
  9. 9 Apideck 55.9
  10. 10 Ramp 53
Top by Agent Readiness
  1. 1 Curlec 56.7
  2. 2 Rillet 50.8
  3. 3 Meow 49
  4. 4 GSMA 42.2
  5. 5 MVMNT 38.3
  6. 6 Mews 36.7
  7. 7 Mews 34.9
  8. 8 Coperniq 34.2
  9. 9 BitPay 34.1
  10. 10 Vic.ai 32.9
All 41 members of this roster resolve to a scored provider in the catalog.Generated from the catalog build of 25 August 2026, across 26891 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.

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All tags 
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As a scored cohort 
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The distribution (Pro) 
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  -H "X-API-Key: $APIS_IO_KEY"

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