BILL Spend & Expense API
A full REST API lives at developer.bill.com with self-serve sandbox signup, developer keys, dedicated Spend & Expense endpoints, webhooks, and a public changelog. The friction is operational: 60 calls per minute per token and a v2 to v3 migration that required rework.
Frequently asked questions
BILL Spend & Expense scores C on the API Report Card. A full REST API lives at developer.bill.com with self-serve sandbox signup, developer keys, dedicated Spend & Expense endpoints, webhooks, and a public changelog. The friction is operational: 60 calls per minute per token and a v2 to v3 migration that required rework.
BILL Spend & Expense has an official API, but teams routinely hit its limits: gated access, partial coverage, or paid tiers. Most end up supplementing it with exports or an unofficial API layer like Supergood.
BILL Spend & Expense (formerly Divvy, acquired by BILL.com) is a corporate card and expense-management platform giving businesses virtual/physical charge cards, real-time budgets, spend controls, and transaction reporting.
Financial Services, Typically for SMB and mid-market finance teams managing corporate card spend, budgets, and expense reconciliation. Finance teams issue virtual and physical cards to employees, set budget limits and spend policies, capture receipts, categorize transactions with custom fields, and sync data to accounting systems for real-time visibility and control.
BILL is publicly traded (NYSE: BILL), serves hundreds of thousands of businesses across its suite, and Divvy/Spend & Expense is a category leader in SMB spend management.
Yes, holds card transactions, budgets, vendor and spend data. However this data is exposed via a mature public API.
Divvy founded 2016, acquired by BILL in 2021. Modern cloud-native fintech stack with active API development (v3 API, UI Elements, webhooks released 2024-2025).
60 calls/min rate limit is restrictive for bulk operations. API version migration (v2 to v3) requires rework. Full sourced list under Sources below.
Common alternatives include Ramp, Brex, Expensify, SAP Concur, Airbase. Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial BILL Spend & Expense API and MCP server so AI agents and internal tools can read and write BILL Spend & Expense data. See the BILL Spend & Expense integration docs at supergood.ai/docs/bill-spend-expense-api.