Freshbooks is one of the most popular online accounting apps, redesigned to make billing and accounting easy for anyone. Send invoices, track expenses and time spent on projects, and manage your clients all in one place.

API styles

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Developer docs

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API Reference

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Webhooks

Webhooks management API

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Authentication

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SSO / Social login

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OAuth playground

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GraphQL playground

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API Explorer

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Postman / Insomnia collections

OpenAPI/Swagger specs

Free developer account

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App listing requirements

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CLI

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Community

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Custom object support

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Base endpoint

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GraphQL endpoint

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