DayZeroAI-native accounting firm
Run the booksBookkeepingAI categorization, AP inbox, anomalies, auto-graded closeAccounts PayableAI bill capture, approvals, payments, vendor trackingInvoicing & ARSend invoices, get paid online, recurring billingOrder to CashQuotes, contracts, e-sign checkout, deferred revenue, auto-draft invoicesAI ReportingBoard-ready reports, AI commentary, PDF/PPT exports
Plan aheadCash Flow Forecast13-week forecast unifying books, inventory, POs, debtDemand PlannerCash what-ifs on your 13-week forecast — PO timing, spend, drawsInventory & COGSSupply chain, BOMs, 3-way match, true landed cost
For accounting firmsCFO PortalWeekly Pulse, board decks, unit economics, flux — from your ledgerClient PortalClient access, questions, document requests, reportsPractice ManagementMulti-client workspace, teams, approvals, controlsAI Workflows638 tools across 24 specialized agentsDeveloper PlatformREST API + MCP server — dry-run writes, approval gates, OAuth
For accounting firmsMulti-client workspace, client portals, and AI workflows at scaleFor growing businessesClose-ready books, cash flow, and reporting without the overheadFor bookkeepersAI categorization, auto-graded close, and multi-client controls
FeaturesIntegrationsPricingDocs
Sign InStart free trial
Run the booksBookkeepingAccounts PayableInvoicing & AROrder to CashAI Reporting
Plan aheadCash Flow ForecastDemand PlannerInventory & COGS
For accounting firmsCFO PortalClient PortalPractice ManagementAI WorkflowsDeveloper Platform
SolutionsFor accounting firmsFor growing businessesFor bookkeepers
FeaturesIntegrationsPricingDocs
Start free trialSign In
OverviewGuidesAPI Reference
/
API Reference/vendors

vendors

Vendor management — accounts payable counterparties.

13 endpoints.

  • GET/api/v1/vendorsList vendors
  • POST/api/v1/vendorsCreate vendor
  • POST/api/v1/vendors/bulk-uploadBulk upload vendors from CSV
  • GET/api/v1/vendors/bulk-upload/templateDownload bulk vendor upload CSV template
  • GET/api/v1/vendors/check-duplicatesCheck for duplicate vendors
  • DELETE/api/v1/vendors/{id}Delete vendor
  • GET/api/v1/vendors/{id}Get vendor
  • PUT/api/v1/vendors/{id}Update vendor
  • GET/api/v1/vendors/{vendor_id}/contactsList vendor contacts
  • POST/api/v1/vendors/{vendor_id}/contactsCreate vendor contact
  • DELETE/api/v1/vendors/{vendor_id}/contacts/{contact_id}Delete vendor contact
  • GET/api/v1/vendors/{vendor_id}/contacts/{contact_id}Get vendor contact
  • PUT/api/v1/vendors/{vendor_id}/contacts/{contact_id}Update vendor contact

Let's build something incredible together.

Start free trial

1 month free

Product
BookkeepingAccounts PayableInvoicing & AROrder to CashAI ReportingCash Flow ForecastDemand PlannerInventory & COGSCFO PortalClient PortalPractice ManagementAI WorkflowsDeveloper PlatformIntegrationsPricing
Solutions
For accounting firmsFor growing businessesFor bookkeepers
Menu
FeaturesDocsAPIGuidesContact
Legal
Terms of ServicePrivacy PolicyCookie PolicySecurity
© 2026 DayZeroCareers — no open positions right now. Check back soon.