Zoho Books

Zoho Books is online accounting software for small and growing businesses that handles invoicing, expenses, banking, projects, inventory, vendor bills, reporting, and end-to-end GST/VAT compliance. It is part of the Zoho Finance suite and integrates with the rest of the Zoho One platform alongside payment gateways, banks, and tax authorities. The Zoho Books REST API exposes the full accounting data model — contacts, invoices, estimates, expenses, bills, banking, items, taxes, and reports — using OAuth 2.0 (Zoho-oauthtoken) for authentication and per-region data center base URLs.

Zoho Books publishes 4 APIs on the APIs.io network, including Contacts API, Invoices API, Items API, and 1 more. Tagged areas include Accounting, Bookkeeping, Invoicing, Expenses, and Banking.

Zoho Books’ developer surface includes documentation, pricing, signup flow, support, engineering blog, developer console, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

36.3/100 thin ▬ flat Agent 17/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

1 APIs

Accounting Bookkeeping Invoicing Expenses Banking Small Business GST VAT Zoho

Kin Score

Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0

Composite quality — 36.3/100 · thin

Contract Quality 9.6 / 19

Developer Ergonomics 5.4 / 15

Access Clarity 5.7 / 15

Operational Transparency 1.8 / 10

Contract Governance 0.0 / 9

Discoverability 5.1 / 8

Regulatory Posture 4.9 / 15

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

Regulatory Posture applies to this provider. Its tags matched the Banking & Open Finance regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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-books: 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 4

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

Zoho Books Contacts API

The Contacts API from Zoho Books — 4 operation(s) for contacts.

Zoho Books Invoices API

The Invoices API from Zoho Books — 5 operation(s) for invoices.

Zoho Books Items API

The Items API from Zoho Books — 2 operation(s) for items.

Zoho Books Organizations API

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

Open Collections 5

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

API Collection

OPEN COLLECTION

Zoho Books Contacts API

OPEN COLLECTION

Zoho Books Invoices API

OPEN COLLECTION

Zoho Books Items API

OPEN COLLECTION

Zoho Books Organizations API

OPEN COLLECTION

Security Posture 2

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

Zoho Books Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Zoho Books Vulnerability Disclosure

security.txt · contact published

SECURITY

Resources

Get Started 3

Portal, sign-up, and the first successful call

Signup

Signup

Login

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

Operate 2

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Other 1

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Source (apis.yml)

aid: zoho-books
name: Zoho Books
description: Zoho Books is online accounting software for small and growing businesses that handles invoicing, expenses, banking,
  projects, inventory, vendor bills, reporting, and end-to-end GST/VAT compliance. It is part of the Zoho Finance suite and
  integrates with the rest of the Zoho One platform alongside payment gateways, banks, and tax authorities. The Zoho Books
  REST API exposes the full accounting data model — contacts, invoices, estimates, expenses, bills, banking, items, taxes,
  and reports — using OAuth 2.0 (Zoho-oauthtoken) for authentication and per-region data center base URLs.
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-books.png
tags:
- Accounting
- Bookkeeping
- Invoicing
- Expenses
- Banking
- Small Business
- GST
- VAT
- Zoho
url: https://raw.githubusercontent.com/api-evangelist/zoho-books/refs/heads/main/apis.yml
created: '2026-05-11'
modified: '2026-05-11'
specificationVersion: '0.23'
apis:
- aid: zoho-books:zoho-books-contacts-api
  name: Zoho Books Contacts API
  description: The Contacts API from Zoho Books — 4 operation(s) for contacts.
  humanURL: https://www.zoho.com/books/api/v3/introduction/
  baseURL: https://www.zohoapis.com/books/v3
  tags:
  - Contacts
  properties:
  - type: OpenAPI
    url: openapi/zoho-books-contacts-api-openapi.yml
  - type: Documentation
    url: https://www.zoho.com/books/api/v3/introduction/
  - type: Authentication
    url: https://www.zoho.com/books/api/v3/oauth/
- aid: zoho-books:zoho-books-invoices-api
  name: Zoho Books Invoices API
  description: The Invoices API from Zoho Books — 5 operation(s) for invoices.
  humanURL: https://www.zoho.com/books/api/v3/introduction/
  baseURL: https://www.zohoapis.com/books/v3
  tags:
  - Invoices
  properties:
  - type: OpenAPI
    url: openapi/zoho-books-invoices-api-openapi.yml
  - type: Documentation
    url: https://www.zoho.com/books/api/v3/introduction/
  - type: Authentication
    url: https://www.zoho.com/books/api/v3/oauth/
- aid: zoho-books:zoho-books-items-api
  name: Zoho Books Items API
  description: The Items API from Zoho Books — 2 operation(s) for items.
  humanURL: https://www.zoho.com/books/api/v3/introduction/
  baseURL: https://www.zohoapis.com/books/v3
  tags:
  - Item
  tags_raw:
  - Items
  properties:
  - type: OpenAPI
    url: openapi/zoho-books-items-api-openapi.yml
  - type: Documentation
    url: https://www.zoho.com/books/api/v3/introduction/
  - type: Authentication
    url: https://www.zoho.com/books/api/v3/oauth/
- aid: zoho-books:zoho-books-organizations-api
  name: Zoho Books Organizations API
  description: The Organizations API from Zoho Books — 1 operation(s) for organizations.
  humanURL: https://www.zoho.com/books/api/v3/introduction/
  baseURL: https://www.zohoapis.com/books/v3
  tags:
  - Organization
  tags_raw:
  - Organizations
  properties:
  - type: OpenAPI
    url: openapi/zoho-books-organizations-api-openapi.yml
  - type: Documentation
    url: https://www.zoho.com/books/api/v3/introduction/
  - type: Authentication
    url: https://www.zoho.com/books/api/v3/oauth/
common:
- type: CapabilityMap
  url: capabilities/zoho-books-capability-edges.yml
  name: Zoho Books Business Capability Map
- type: VulnerabilityDisclosure
  url: security/zoho-books-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/zoho-books-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/zoho
- type: LinkedIn
  url: https://www.linkedin.com/showcase/zoho-books
- type: Website
  url: https://www.zoho.com/books/
- type: Documentation
  url: https://www.zoho.com/books/api/v3/introduction/
- type: Pricing
  url: https://www.zoho.com/books/pricing/
- type: Signup
  url: https://www.zoho.com/books/signup/
- type: Login
  url: https://books.zoho.com/app/login
- type: Support
  url: https://www.zoho.com/books/support/
- type: Blog
  url: https://www.zoho.com/books/blog/
- type: StatusPage
  url: https://status.zoho.com/
- type: PrivacyPolicy
  url: https://www.zoho.com/privacy.html
- type: TermsOfService
  url: https://www.zoho.com/terms.html
- type: Console
  url: https://api-console.zoho.com/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-parent: zoho
x-relationship: product

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