Accelo is a cloud-based service operations automation (ServOps) platform that unifies project management, client relationship management (CRM), time tracking, retainers, quotes, billing, and invoicing for professional services businesses. The Accelo REST API exposes resources such as companies, contacts, activities, tasks, jobs (projects), milestones, invoices, contracts, and webhooks using OAuth 2.0 authentication scoped to a deployment subdomain.
APIs.json: https://raw.githubusercontent.com/api-evangelist/accelo/refs/heads/main/apis.yml
- Type: Index
- Professional Services Automation
- Project Management
- CRM
- Time Tracking
- Invoicing
- Service Operations
- Created: 2026-05-11
- Modified: 2026-05-11
REST API for Accelo with CRUD access to companies, contacts, activities, tasks, projects (jobs), milestones, invoices, contracts, quotes, prospects, time entries, staff, and webhooks. Uses OAuth 2.0 (service, web, and installed application grants) with a Bearer access token and deployment-scoped subdomain.
- Human URL: https://api.accelo.com/docs/
- Base URL:
https://{deployment}.api.accelo.com/api/v0
- Professional Services Automation
- Project Management
- CRM
- Time Tracking
- Invoicing
- Documentation
- Authentication
- Postman Collection — Postman Collection 2.1
- Open Collection — Open Collection 1.0
FN: Kin Lane Email: kin@apievangelist.com