PASAR API
OAuth2 REST API for invoices, expenses, bank transactions, payroll and tax returns. UK-focused SMB accounting but accessible to MY developers building cross-border invoicing integrations.
View docs ↗ More E-invoicing & tax APIs# FreeAgent Accounting & Invoicing API needs OAuth credentials. # No single public base URL ~ start from the docs: # https://dev.freeagent.com/docs
I'm integrating a Malaysia API into my app. API: FreeAgent Accounting & Invoicing API Provider: FreeAgent (NatWest) Auth: requires OAuth credentials (sign up: https://dev.freeagent.com/docs) Pricing: paid Important note: OAuth2 REST API for invoices, expenses, bank transactions, payroll and tax returns. UK-focused SMB accounting but accessible to MY developers building cross-border invoicing integrations. Source: FreeAgent (NatWest) (https://dev.freeagent.com/docs) Source type: Provider API or developer docs Endpoint type: Docs-first integration Integration difficulty: Regulated setup Last checked: 2026-06-15 Production caveat: Onboarding, approvals, sandbox/preprod, or compliance steps may be required before production. Help me set up the correct onboarding/authentication path and make the first valid request ~ explain exactly where credentials go and what must happen before production.