Zoho Invoice website screenshot

Zoho Invoice

Zoho Invoice is a cloud-based invoicing application for small businesses and freelancers that supports customer management, estimates, invoices, recurring billing, expense tracking, time tracking, and online payment collection. The Zoho Invoice REST API provides full CRUD access to organizations, contacts, items, invoices, estimates, credit notes, expenses, projects, time entries, and customer payments. Authentication uses OAuth 2.0 with region-specific data center domains (.com, .eu, .in, .com.au, .jp, .ca, .com.cn, .sa).

Zoho Invoice publishes 5 APIs on the APIs.io network, including Contacts API, Credit Notes API, Estimates API, and 2 more. Tagged areas include Invoicing, Accounting, Small Business, Billing, and Expense Tracking.

Zoho Invoice’s developer surface includes documentation, pricing, signup flow, developer console, engineering blog, and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub
27.8/100 thin ▬ flat Agent 17/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0
1 APIs
InvoicingAccountingSmall BusinessBillingExpense TrackingSoftware-as-a-Service

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0
Composite quality — 27.8/100 · thin
Contract Quality 11.5 / 23
Developer Ergonomics 3.4 / 18
Access Clarity 4.3 / 18
Operational Transparency 0.3 / 12
Contract Governance 0.0 / 11
Discoverability 6.2 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 17/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 6 / 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 0 / 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/zoho-invoice: 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 6

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

Zoho Invoice API

REST API for managing organizations, contacts, items, invoices, estimates, credit notes, recurring invoices, expenses, projects, time entries, and customer payments. Authenticat...

Zoho Invoice Contacts API

The Contacts API from Zoho Invoice — 3 operation(s) for contacts.

Zoho Invoice Credit Notes API

The Credit Notes API from Zoho Invoice — 2 operation(s) for credit notes.

Zoho Invoice Estimates API

The Estimates API from Zoho Invoice — 2 operation(s) for estimates.

Zoho Invoice Invoices API

The Invoices API from Zoho Invoice — 6 operation(s) for invoices.

Zoho Invoice Organizations API

The Organizations API from Zoho Invoice — 1 operation(s) for organizations.

Open Collections 6

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

API Collection

OPEN COLLECTION

Zoho Invoice Contacts API

OPEN COLLECTION

Zoho Invoice Credit Notes API

OPEN COLLECTION

Zoho Invoice Estimates API

OPEN COLLECTION

Zoho Invoice Invoices API

OPEN COLLECTION

Zoho Invoice Organizations API

OPEN COLLECTION

Security Posture 2

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

Zoho Invoice Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Zoho Invoice Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Signup
Signup
 Console
Console

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity

Commercial 1

Pricing, plans, and the legal terms of use

Pricing
Pricing

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: zoho-invoice
name: Zoho Invoice
description: Zoho Invoice is a cloud-based invoicing application for small businesses and freelancers that supports customer
  management, estimates, invoices, recurring billing, expense tracking, time tracking, and online payment collection. The
  Zoho Invoice REST API provides full CRUD access to organizations, contacts, items, invoices, estimates, credit notes, expenses,
  projects, time entries, and customer payments. Authentication uses OAuth 2.0 with region-specific data center domains (.com,
  .eu, .in, .com.au, .jp, .ca, .com.cn, .sa).
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: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/zoho-invoice.png
tags:
- Invoicing
- Accounting
- Small Business
- Billing
- Expense Tracking
- Software-as-a-Service
tags_raw:
- Invoicing
- Accounting
- Small Business
- Billing
- Expense Tracking
- SaaS
url: https://raw.githubusercontent.com/api-evangelist/zoho-invoice/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.23'
apis:
- aid: zoho-invoice:api
  name: Zoho Invoice API
  description: REST API for managing organizations, contacts, items, invoices, estimates, credit notes, recurring invoices,
    expenses, projects, time entries, and customer payments. Authentication is OAuth 2.0 with Organization ID header and region-specific
    data center domains.
  humanURL: https://www.zoho.com/invoice/api/v3/introduction
  baseURL: https://www.zohoapis.com/invoice/v3
  tags:
  - Invoicing
  - Billing
  - Accounting
  properties:
  - type: Documentation
    url: https://www.zoho.com/invoice/api/v3/introduction
  - type: OAuth Overview
    url: https://www.zoho.com/invoice/api/v3/oauth/
- aid: zoho-invoice:zoho-invoice-contacts-api
  name: Zoho Invoice Contacts API
  description: The Contacts API from Zoho Invoice — 3 operation(s) for contacts.
  humanURL: https://www.zoho.com/invoice/api/v3/introduction
  baseURL: https://www.zohoapis.com/invoice/v3
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/zoho-invoice-contacts-api-openapi.yml
- aid: zoho-invoice:zoho-invoice-credit-notes-api
  name: Zoho Invoice Credit Notes API
  description: The Credit Notes API from Zoho Invoice — 2 operation(s) for credit notes.
  humanURL: https://www.zoho.com/invoice/api/v3/introduction
  baseURL: https://www.zohoapis.com/invoice/v3
  tags:
  - Credit Notes
  properties:
  - type: OpenAPI
    url: openapi/zoho-invoice-credit-notes-api-openapi.yml
- aid: zoho-invoice:zoho-invoice-estimates-api
  name: Zoho Invoice Estimates API
  description: The Estimates API from Zoho Invoice — 2 operation(s) for estimates.
  humanURL: https://www.zoho.com/invoice/api/v3/introduction
  baseURL: https://www.zohoapis.com/invoice/v3
  tags:
  - Estimates
  properties:
  - type: OpenAPI
    url: openapi/zoho-invoice-estimates-api-openapi.yml
- aid: zoho-invoice:zoho-invoice-invoices-api
  name: Zoho Invoice Invoices API
  description: The Invoices API from Zoho Invoice — 6 operation(s) for invoices.
  humanURL: https://www.zoho.com/invoice/api/v3/introduction
  baseURL: https://www.zohoapis.com/invoice/v3
  tags:
  - Invoices
  properties:
  - type: OpenAPI
    url: openapi/zoho-invoice-invoices-api-openapi.yml
- aid: zoho-invoice:zoho-invoice-organizations-api
  name: Zoho Invoice Organizations API
  description: The Organizations API from Zoho Invoice — 1 operation(s) for organizations.
  humanURL: https://www.zoho.com/invoice/api/v3/introduction
  baseURL: https://www.zohoapis.com/invoice/v3
  tags:
  - Organization
  tags_raw:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/zoho-invoice-organizations-api-openapi.yml
common:
- type: VulnerabilityDisclosure
  url: security/zoho-invoice-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/zoho-invoice-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/zoho
- type: Website
  url: https://www.zoho.com/invoice
- type: Documentation
  url: https://www.zoho.com/invoice/api/v3
- type: Pricing
  url: https://www.zoho.com/invoice/pricing.html
- type: Signup
  url: https://www.zoho.com/invoice/signup
- type: Console
  url: https://api-console.zoho.com
- url: https://www.zoho.com/invoice/blog/feed/
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: zoho
x-relationship: product

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