Accelo website screenshot

Accelo

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.

Accelo publishes 1 API on the APIs.io network: REST API. Tagged areas include Professional Services Automation, Project Management, CRM, Time Tracking, and Invoicing.

Accelo’s developer surface includes authentication, documentation, signup flow, pricing, support, engineering blog, and 7 more developer resources.

🌐 Visit website 📡 Source on GitHub
26.1/100 emerging ▬ flat Agent 41/100 agent aware Full breakdown ↓
scored 2026-07-21 · rubric v0.4
1 APIs 0 Features
Professional Services AutomationProject ManagementCRMTime TrackingInvoicingService Operations

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-21 · rubric v0.4
Composite quality — 26.1/100 · emerging
Contract Quality 9.4 / 25
Developer Ergonomics 5.2 / 20
Commercial Clarity 4.7 / 20
Operational Transparency 0.7 / 13
Governance 0.0 / 12
Discoverability 6.0 / 10
Agent readiness — 41/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 15 / 15
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/accelo: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs

Accelo REST API

REST API for Accelo with CRUD access to companies, contacts, activities, tasks, projects (jobs), milestones, invoices, contracts, quotes, prospects, time entries, staff, and web...

Collections

Accelo REST API

OPEN

Resources

Get Started 2

Portal, sign-up, and the first successful call

Signup
Signup
 Login
Login

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication
 OAuthScopes
OAuthScopes

Operate 1

Status, limits, changes, and where to get help

Support
Support

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 3

The organization behind the API

LinkedIn
LinkedIn
 Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
opencollection: 1.0.0
info:
  name: Accelo REST API
  version: v0
request:
  auth:
    type: oauth2
    flow: client_credentials
    accessTokenUrl: https://{deployment}.api.accelo.com/oauth2/v0/token
    credentials:
      clientId: '{{clientId}}'
      clientSecret: '{{clientSecret}}'
items:
- info:
    name: Activities
    type: folder
  items:
  - info:
      name: List activities
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/activities
    docs: List activities
  - info:
      name: Create an activity
      type: http
    http:
      method: POST
      url: https://{deployment}.api.accelo.com/api/v0/activities
    docs: Create an activity
  - info:
      name: Retrieve a specific activity
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/activities/:activity_id
    docs: Retrieve a specific activity
  - info:
      name: Update an activity
      type: http
    http:
      method: PUT
      url: https://{deployment}.api.accelo.com/api/v0/activities/:activity_id
    docs: Update an activity
  - info:
      name: Delete an activity
      type: http
    http:
      method: DELETE
      url: https://{deployment}.api.accelo.com/api/v0/activities/:activity_id
    docs: Delete an activity
  - info:
      name: List interactions for an activity
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/activities/:activity_id/interactions
    docs: List interactions for an activity
  - info:
      name: List threads for an activity
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/activities/:activity_id/threads
    docs: List threads for an activity
- info:
    name: Companies
    type: folder
  items:
  - info:
      name: List companies
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/companies
    docs: List companies
  - info:
      name: Create a company
      type: http
    http:
      method: POST
      url: https://{deployment}.api.accelo.com/api/v0/companies
    docs: Create a company
  - info:
      name: Get a company
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/companies/:company_id
    docs: Get a company
  - info:
      name: Update a company
      type: http
    http:
      method: PUT
      url: https://{deployment}.api.accelo.com/api/v0/companies/:company_id
    docs: Update a company
  - info:
      name: Delete a company
      type: http
    http:
      method: DELETE
      url: https://{deployment}.api.accelo.com/api/v0/companies/:company_id
    docs: Delete a company
- info:
    name: Contacts
    type: folder
  items:
  - info:
      name: List contacts
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/contacts
    docs: List contacts
  - info:
      name: Create a contact
      type: http
    http:
      method: POST
      url: https://{deployment}.api.accelo.com/api/v0/contacts
    docs: Create a contact
  - info:
      name: Get a contact
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/contacts/:contact_id
    docs: Get a contact
  - info:
      name: Update a contact
      type: http
    http:
      method: PUT
      url: https://{deployment}.api.accelo.com/api/v0/contacts/:contact_id
    docs: Update a contact
- info:
    name: Jobs
    type: folder
  items:
  - info:
      name: List jobs (projects)
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/jobs
    docs: List jobs (projects)
  - info:
      name: Create a job
      type: http
    http:
      method: POST
      url: https://{deployment}.api.accelo.com/api/v0/jobs
    docs: Create a job
  - info:
      name: Get a job
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/jobs/:job_id
    docs: Get a job
  - info:
      name: Update a job
      type: http
    http:
      method: PUT
      url: https://{deployment}.api.accelo.com/api/v0/jobs/:job_id
    docs: Update a job
- info:
    name: Issues
    type: folder
  items:
  - info:
      name: List issues (tickets)
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/issues
    docs: List issues (tickets)
  - info:
      name: Create an issue
      type: http
    http:
      method: POST
      url: https://{deployment}.api.accelo.com/api/v0/issues
    docs: Create an issue
  - info:
      name: Get an issue
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/issues/:issue_id
    docs: Get an issue
  - info:
      name: Update an issue
      type: http
    http:
      method: PUT
      url: https://{deployment}.api.accelo.com/api/v0/issues/:issue_id
    docs: Update an issue
- info:
    name: Tasks
    type: folder
  items:
  - info:
      name: List tasks
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/tasks
    docs: List tasks
  - info:
      name: Create a task
      type: http
    http:
      method: POST
      url: https://{deployment}.api.accelo.com/api/v0/tasks
    docs: Create a task
  - info:
      name: Get a task
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/tasks/:task_id
    docs: Get a task
  - info:
      name: Update a task
      type: http
    http:
      method: PUT
      url: https://{deployment}.api.accelo.com/api/v0/tasks/:task_id
    docs: Update a task
- info:
    name: OAuth
    type: folder
  items:
  - info:
      name: Get information about the current access token
      type: http
    http:
      method: GET
      url: https://{deployment}.api.accelo.com/api/v0/tokeninfo
    docs: Get information about the current access token
bundled: true