aid: freeagent name: FreeAgent description: >- FreeAgent is UK-focused cloud accounting software for small businesses, freelancers, and accountants, providing invoicing, expense tracking, time tracking, project management, banking, payroll, and Self Assessment / VAT filing through HMRC's Making Tax Digital. The FreeAgent API is a RESTful service that exposes contacts, invoices, estimates, expenses, bills, timeslips, projects, bank accounts, bank transactions, transaction explanations, and tax timeline events for company accounts and accountancy practices. Authentication uses OAuth 2.0 (authorization code flow) and responses are available in JSON or XML. type: Index image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg tags: - Accounting - Small Business - Invoicing - Bookkeeping - Expenses - Payroll - VAT - HMRC - Making Tax Digital url: >- https://raw.githubusercontent.com/api-evangelist/freeagent/refs/heads/main/apis.yml created: '2026-05-11' modified: '2026-05-11' specificationVersion: '0.19' apis: - aid: freeagent:rest-api name: FreeAgent REST API description: >- RESTful API for the FreeAgent cloud accounting platform. Provides full access to invoices, estimates, contacts, bills, expenses, projects, timeslips, bank accounts, transactions, and accountancy-practice resources. Authentication is OAuth 2.0 authorization code flow; a sandbox is available at api.sandbox.freeagent.com. humanURL: https://dev.freeagent.com/docs baseURL: https://api.freeagent.com/v2 tags: - Accounting - Invoicing - Bookkeeping - Expenses - Bank Feeds - OAuth 2.0 properties: - type: Documentation url: https://dev.freeagent.com/docs - type: Authentication url: https://dev.freeagent.com/docs/oauth - type: Getting Started url: https://dev.freeagent.com/docs/quick_start - type: Sandbox url: https://api.sandbox.freeagent.com - type: Postman Collection url: https://github.com/fac/postman-freeagent-api-collection common: - type: Website url: https://www.freeagent.com - type: Documentation url: https://dev.freeagent.com/docs - type: Developer Portal url: https://dev.freeagent.com - type: Pricing url: https://www.freeagent.com/pricing/ - type: Sign Up url: https://signup.freeagent.com/ - type: Support url: https://support.freeagent.com - type: Status url: https://status.freeagent.com maintainers: - FN: Kin Lane email: kin@apievangelist.com