Exact Online

Exact Online is a Dutch cloud business software suite from Exact (Delft, NL) serving SMEs and accountants with accounting, ERP, invoicing, CRM, project management, and AI-driven automation, used by more than 675,000 companies. The platform exposes a comprehensive REST and OData API covering financial, HRM, logistics, CRM, and project data across regional deployments (start.exactonline.nl, .co.uk, .be, .de, .fr, .es, .com). Authentication is via OAuth 2.0 with regional authorization and token endpoints.

Exact Online publishes 6 APIs on the APIs.io network, including CRM API, Financial API, Logistics API, and 3 more. Tagged areas include Accounting, ERP, Invoicing, Business Software, and CRM.

Exact Online’s developer surface includes authentication, documentation, pricing, signup flow, engineering blog, and 9 more developer resources.

🌐 Visit website 📡 Source on GitHub

28.5/100 thin ▬ flat Agent 22/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

AccessSelf serve

1 APIs

Accounting ERP Invoicing Business Software CRM Financial Software SME

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 28.5/100 · thin

Contract Quality 10.7 / 23

Developer Ergonomics 5.6 / 18

Access Clarity 3.8 / 18

Operational Transparency 0.0 / 12

Contract Governance 0.0 / 11

Discoverability 6.2 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 22/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

A2A Agent Card 0 / 8

Dry-Run / Simulate Mode 0 / 4

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/exact-online: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 7

Individual APIs this provider publishes, each with its own machine-readable definition.

Exact Online REST / OData API

REST and OData API (v1) for Exact Online covering financials, sales, purchasing, inventory, HRM, CRM, project management, and master data. Authentication is OAuth 2.0; applicati...

Exact Online CRM API

The CRM API from Exact Online — 4 operation(s) for crm.

Exact Online Financial API

The Financial API from Exact Online — 1 operation(s) for financial.

Exact Online Logistics API

The Logistics API from Exact Online — 1 operation(s) for logistics.

Exact Online Purchase API

The Purchase API from Exact Online — 1 operation(s) for purchase.

Exact Online Sales API

The Sales API from Exact Online — 3 operation(s) for sales.

Exact Online System API

The System API from Exact Online — 3 operation(s) for system.

Scroll for all 7

Open Collections 8

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Exact Online REST / OData CRM API

OPEN COLLECTION

Exact Online REST / OData CRM Financial API

OPEN COLLECTION

Exact Online REST / OData CRM Logistics API

OPEN COLLECTION

Exact Online REST / OData CRM Purchase API

OPEN COLLECTION

Exact Online REST / OData CRM Sales API

OPEN COLLECTION

Exact Online REST / OData CRM System API

OPEN COLLECTION

Exact Online REST / OData API

OPEN COLLECTION

Scroll for all 8

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Exact Online Authentication

oauth2 · 1 scheme

SECURITY

Exact Online Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Exact Online Vulnerability Disclosure

Intigriti · security.txt · contact published

SECURITY

Exact Online Trust Center

GDPR

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Exact Online Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Exact Online Agentic Access

26 operations · 13 acting

AGENTIC

Resources

Get Started 1

Portal, sign-up, and the first successful call

Signup

Signup

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

API Documentation

API Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Access & Security 5

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

OAuthScopes

OAuthScopes

Commercial 1

Pricing, plans, and the legal terms of use

Pricing

Pricing

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

App Center

App Center

Source (apis.yml)

aid: exact-online
name: Exact Online
description: Exact Online is a Dutch cloud business software suite from Exact (Delft, NL) serving SMEs and accountants with
  accounting, ERP, invoicing, CRM, project management, and AI-driven automation, used by more than 675,000 companies. The
  platform exposes a comprehensive REST and OData API covering financial, HRM, logistics, CRM, and project data across regional
  deployments (start.exactonline.nl, .co.uk, .be, .de, .fr, .es, .com). Authentication is via OAuth 2.0 with regional authorization
  and token endpoints.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/exact-online.png
tags:
- Accounting
- ERP
- Invoicing
- Business Software
- CRM
- Financial Software
- SME
url: https://raw.githubusercontent.com/api-evangelist/exact-online/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.23'
apis:
- aid: exact-online:rest-api
  name: Exact Online REST / OData API
  description: REST and OData API (v1) for Exact Online covering financials, sales, purchasing, inventory, HRM, CRM, project
    management, and master data. Authentication is OAuth 2.0; applications register in the Exact App Center and use regional
    auth/token endpoints (e.g. start.exactonline.nl for the Netherlands, start.exactonline.co.uk for the UK).
  humanURL: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
  baseURL: https://start.exactonline.nl/api/v1
  tags:
  - Accounting
  - ERP
  - Invoicing
  - Financial
  properties:
  - type: Documentation
    url: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
  - type: Reference
    url: https://support.exactonline.com/community/s/article/All-All-DNO-Content-restrefdocs
  - type: Introduction
    url: https://support.exactonline.com/community/s/article/All-All-DNO-Content-restintro
  - type: OAuth Authorization Endpoint
    url: https://start.exactonline.nl/api/oauth2/auth
  - type: OAuth Token Endpoint
    url: https://start.exactonline.nl/api/oauth2/token
  - type: Sample Code
    url: https://support.exactonline.com/community/s/article/All-All-DNO-Content-restsamplecode
- aid: exact-online:exact-online-crm-api
  name: Exact Online CRM API
  description: The CRM API from Exact Online — 4 operation(s) for crm.
  humanURL: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
  baseURL: https://start.exactonline.nl/api/v1
  tags:
  - CRM
  properties:
  - type: OpenAPI
    url: openapi/exact-online-crm-api-openapi.yml
- aid: exact-online:exact-online-financial-api
  name: Exact Online Financial API
  description: The Financial API from Exact Online — 1 operation(s) for financial.
  humanURL: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
  baseURL: https://start.exactonline.nl/api/v1
  tags:
  - Financial
  properties:
  - type: OpenAPI
    url: openapi/exact-online-financial-api-openapi.yml
- aid: exact-online:exact-online-logistics-api
  name: Exact Online Logistics API
  description: The Logistics API from Exact Online — 1 operation(s) for logistics.
  humanURL: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
  baseURL: https://start.exactonline.nl/api/v1
  tags:
  - Logistics
  properties:
  - type: OpenAPI
    url: openapi/exact-online-logistics-api-openapi.yml
- aid: exact-online:exact-online-purchase-api
  name: Exact Online Purchase API
  description: The Purchase API from Exact Online — 1 operation(s) for purchase.
  humanURL: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
  baseURL: https://start.exactonline.nl/api/v1
  tags:
  - Purchase
  properties:
  - type: OpenAPI
    url: openapi/exact-online-purchase-api-openapi.yml
- aid: exact-online:exact-online-sales-api
  name: Exact Online Sales API
  description: The Sales API from Exact Online — 3 operation(s) for sales.
  humanURL: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
  baseURL: https://start.exactonline.nl/api/v1
  tags:
  - Sales
  properties:
  - type: OpenAPI
    url: openapi/exact-online-sales-api-openapi.yml
- aid: exact-online:exact-online-system-api
  name: Exact Online System API
  description: The System API from Exact Online — 3 operation(s) for system.
  humanURL: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
  baseURL: https://start.exactonline.nl/api/v1
  tags:
  - System
  properties:
  - type: OpenAPI
    url: openapi/exact-online-system-api-openapi.yml
common:
- type: AgenticAccess
  url: agentic-access/exact-online-agentic-access.yml
- type: TrustCenter
  url: security/exact-online-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/exact-online-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/exact-online-domain-security.yml
- type: Authentication
  url: authentication/exact-online-authentication.yml
- type: OAuthScopes
  url: scopes/exact-online-scopes.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/exact
- type: Website
  url: https://www.exact.com
- type: Documentation
  url: https://support.exactonline.com/community/s/knowledge-base
- type: API Documentation
  url: https://start.exactonline.nl/docs/HlpRestAPIResources.aspx
- type: Pricing
  url: https://www.exact.com/nl/software/prijs
- type: Signup
  url: https://www.exact.com/nl/probeer-gratis
- type: App Center
  url: https://apps.exactonline.com
- type: Blog
  url: https://www.exact.com/nl/blog?format=feed&type=rss
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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