PASAR API
OpenAPI v5 for invoices, recurring invoices, payments, quotes, credits, clients, products, expenses and webhooks. Token auth via X-API-TOKEN header. Self-hosted: free (MIT licence); hosted Pro from $10/month.
View docs ↗ More E-invoicing & tax APIs# Invoice Ninja Open-Source Invoicing API needs an API key. # No single public base URL ~ start from the docs: # https://api-docs.invoicing.co/
I'm integrating a Malaysia API into my app. API: Invoice Ninja Open-Source Invoicing API Provider: Invoice Ninja Auth: requires an API key (sign up: https://api-docs.invoicing.co/) Pricing: freemium Important note: OpenAPI v5 for invoices, recurring invoices, payments, quotes, credits, clients, products, expenses and webhooks. Token auth via X-API-TOKEN header. Self-hosted: free (MIT licence); hosted Pro from $10/month. Source: Invoice Ninja (https://api-docs.invoicing.co/) Source type: Curated source 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.