# Airbase

**Canonical:** https://apis.io/providers/airbase/  
**Website:** https://www.airbase.com/  
**APIs profiled:** 9

Airbase is a modern spend management platform for finance teams that combines accounts-payable (AP) automation and bill pay, guided procurement and purchase orders, corporate cards, and expense reimbursements on a single system with real-time general-ledger sync. Airbase Inc. was acquired by Paylocity in a ~$325M deal announced September 4, 2024 and completed October 1, 2024, and now operates as "Airbase by Paylocity," extending Paylocity's HCM suite into the office of the CFO. Airbase exposes a developer platform at developer.airbase.io (REST API reference, OpenAPI/Swagger, Postman and Insomnia collections, a webhooks management API, an OAuth playground, and a sandbox) used to build custom connections for systems not covered by the pre-built integrations. API access is account-gated - credentials are generated inside the customer's Airbase/Paylocity tenant rather than through open self-serve signup - so the logical APIs below are honestly modeled from the documented product surface and developer portal, and the exact endpoint paths and base URL are not publicly reproduced here (endpointsModeled).

## Kin Score — 13.4 / 100 (emerging)

Scored 2026-08-25 under rubric 0.14.0. Trend: flat (+0.0 from 13.4).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 21.1 |
| Developer Ergonomics | 9.5 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

Regulatory layer — **Payments**: 9.4 (matched via tags).

## Agent readiness — 2.5 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | documented |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |
| Delegated Identity | no |
| Protected Resource Metadata | no |
| Dynamic Client Registration | no |
| Agentic Commerce | no |

## Access

Freemium — onboarding: unknown, pricing: freemium, trial: no (confidence: medium).

## APIs (9)

- **Airbase Bills & AP Automation API** — Programmatically create, list, retrieve, and update bills and vendor invoices flowing through Airbase's AP automation - including bill line items, approval state, payment status...
- **Airbase Purchase Requests & Orders API** — Create and track guided purchase requests and purchase orders, including intake details, line items, vendor and GL coding, budget checks, and the approval milestones a request t...
- **Airbase Vendors API** — Manage the vendor/supplier master record - create, list, retrieve, and update vendors, their payment details, tax and onboarding information, and the relationships that bills, p...
- **Airbase Corporate Cards API** — Access Airbase corporate and virtual card programs - list cards, card holders, spend limits and controls, and their associated policies - to reconcile card spend against budgets...
- **Airbase Transactions API** — Pull unified transaction and spend data across cards, bills, and reimbursements - amounts, merchants, dates, GL coding, and reconciliation status - for reporting, analytics, and...
- **Airbase Expense Reimbursements API** — Create and track employee expense reimbursements and out-of-pocket claims - receipts, line items, approval state, and payout status - as part of Airbase's expense management wor...
- **Airbase Approvals API** — Inspect and act on the multi-step approval workflows that gate purchase requests, bills, cards, and reimbursements - approvers, policy rules, current state, and milestone transi...
- **Airbase GL & Accounting Sync API** — Read and push general-ledger coding and accounting records so spend stays in sync with the ERP/GL. Airbase promotes a REST API specifically for building custom ERP/GL connection...
- **Airbase Webhooks Management API** — Register and manage webhook subscriptions so external systems receive Airbase events - for example a purchase request being approved or a workflow transitioning through a milest...

## Security (1)

- **Airbase Domain Security** — TLSv1.3 · HSTS · DMARC

## Plans (1)

- **Airbase Plans Pricing**

## Tags

Spend Management, Accounts Payable, Bill Pay, Procurement, Corporate Cards, Expense Management, Fintech, Paylocity, Gated API

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/airbase/). Scores are computed from the provider's own public artifacts under a published rubric.