Octobat

Octobat is a billing, invoicing, and tax-compliance platform for online businesses. It automates the creation, delivery, and storage of legally compliant invoices, credit notes, self-billing invoices, and tax receipts for every online transaction, and provides a real-time tax (VAT / GST / sales tax) determination engine for tax-exclusive and tax-inclusive billing models. Octobat integrates with Stripe, GoCardless, and other payment providers, and exposes a Stripe-style REST API at base URL https://apiv2.octobat.com authenticated with HTTP Basic (secret key). Octobat also ships Beanie (a hosted checkout) and Plaza (marketplace / platform tax and invoicing for connected accounts). Operating status - Octobat was acquired by Mirakl in November 2021; the standalone marketing site (octobat.com) now redirects to mirakl.com, while the developer documentation at docs.octobat.com and the apiv2.octobat.com API remain available to existing integrators.

Octobat publishes 9 APIs on the APIs.io network, including Coupons API, Credit Notes API, Customers API, and 6 more. Tagged areas include Billing, Invoicing, Tax Compliance, VAT, and E-Commerce.

Octobat’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub

34.6/100 thin ▬ flat Agent 24/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0

AccessPaid

1 APIs

Billing Invoicing Tax Compliance VAT E-Commerce Payments Fintech

Kin Score

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

Composite quality — 34.6/100 · thin

Contract Quality 9.1 / 19

Developer Ergonomics 4.5 / 15

Access Clarity 5.9 / 15

Operational Transparency 3.3 / 10

Contract Governance 0.0 / 9

Discoverability 5.1 / 8

Regulatory Posture 2.8 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 24/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 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 7 / 7

Rate-Limit Signaling 7 / 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 Payments 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/octobat: 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 9

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

Octobat Coupons API

Discount coupons for invoices and subscriptions.

Octobat Credit Notes API

Compliant credit notes issued against invoices.

Octobat Customers API

Customers and their billing / tax details.

Octobat Invoices API

Compliant invoices, their items, and lifecycle actions.

Octobat Payouts API

Settlement payouts and their balance transactions.

Octobat Products API

Products and their tax categorization.

Octobat Subscriptions API

Recurring-billing subscriptions and metered usage.

Octobat Tax Evidence API

Real-time tax determination for customers and carts / checkouts.

Octobat Transactions API

Payments registered against invoices for reconciliation and tax reporting.

Scroll for all 9

Open Collections 11

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

API Collection

OPEN COLLECTION

Octobat Coupons API

OPEN COLLECTION

Octobat Coupons Credit Notes API

OPEN COLLECTION

Octobat Coupons Customers API

OPEN COLLECTION

Octobat Coupons Invoices API

OPEN COLLECTION

Octobat Coupons Payouts API

OPEN COLLECTION

Octobat Coupons Products API

OPEN COLLECTION

Octobat Coupons Subscriptions API

OPEN COLLECTION

Octobat Coupons Tax Evidence API

OPEN COLLECTION

Octobat Coupons Transactions API

OPEN COLLECTION

Octobat API

OPEN COLLECTION

Scroll for all 11

Pricing Plans 1

Published pricing tiers and plan structures.

Octobat Plans Pricing

4 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Octobat Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Octobat Finops

FINOPS

Security Posture 2

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

Octobat Authentication

http · 1 scheme

SECURITY

Octobat Domain Security

TLSv1.3 · HSTS

SECURITY

Agentic Access 1

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

Octobat Agentic Access

48 operations · 32 acting

AGENTIC

Resources

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 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits

RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans

Plans

FinOps

FinOps

Company 2

The organization behind the API

LinkedIn

Website

Website

Source (apis.yml)

aid: octobat
url: https://raw.githubusercontent.com/api-evangelist/octobat/refs/heads/main/apis.yml
name: Octobat
kind: company
description: Octobat is a billing, invoicing, and tax-compliance platform for online businesses. It automates the creation,
  delivery, and storage of legally compliant invoices, credit notes, self-billing invoices, and tax receipts for every online
  transaction, and provides a real-time tax (VAT / GST / sales tax) determination engine for tax-exclusive and tax-inclusive
  billing models. Octobat integrates with Stripe, GoCardless, and other payment providers, and exposes a Stripe-style REST
  API at base URL https://apiv2.octobat.com authenticated with HTTP Basic (secret key). Octobat also ships Beanie (a hosted
  checkout) and Plaza (marketplace / platform tax and invoicing for connected accounts). Operating status - Octobat was acquired
  by Mirakl in November 2021; the standalone marketing site (octobat.com) now redirects to mirakl.com, while the developer
  documentation at docs.octobat.com and the apiv2.octobat.com API remain available to existing integrators.
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: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  - url: https://www.octobat.com
    status: 302
    note: declared website redirects to https://www.mirakl.com/ — a different registrable domain (octobat.com -> mirakl.com),
      possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/octobat.png
tags:
- Billing
- Invoicing
- Tax Compliance
- VAT
- E-Commerce
- Payments
- Fintech
created: '2026-07-03'
modified: '2026-07-03'
specificationVersion: '0.23'
apis:
- aid: octobat:octobat-coupons-api
  name: Octobat Coupons API
  description: Discount coupons for invoices and subscriptions.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Coupons
  properties:
  - type: OpenAPI
    url: openapi/octobat-coupons-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
- aid: octobat:octobat-credit-notes-api
  name: Octobat Credit Notes API
  description: Compliant credit notes issued against invoices.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Credit Notes
  properties:
  - type: OpenAPI
    url: openapi/octobat-credit-notes-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
- aid: octobat:octobat-customers-api
  name: Octobat Customers API
  description: Customers and their billing / tax details.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/octobat-customers-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
- aid: octobat:octobat-invoices-api
  name: Octobat Invoices API
  description: Compliant invoices, their items, and lifecycle actions.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Invoices
  properties:
  - type: OpenAPI
    url: openapi/octobat-invoices-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
- aid: octobat:octobat-payouts-api
  name: Octobat Payouts API
  description: Settlement payouts and their balance transactions.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Payouts
  properties:
  - type: OpenAPI
    url: openapi/octobat-payouts-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
- aid: octobat:octobat-products-api
  name: Octobat Products API
  description: Products and their tax categorization.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Product
  tags_raw:
  - Products
  properties:
  - type: OpenAPI
    url: openapi/octobat-products-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
- aid: octobat:octobat-subscriptions-api
  name: Octobat Subscriptions API
  description: Recurring-billing subscriptions and metered usage.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Subscription
  tags_raw:
  - Subscriptions
  properties:
  - type: OpenAPI
    url: openapi/octobat-subscriptions-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
- aid: octobat:octobat-tax-evidence-api
  name: Octobat Tax Evidence API
  description: Real-time tax determination for customers and carts / checkouts.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Tax Evidence
  properties:
  - type: OpenAPI
    url: openapi/octobat-tax-evidence-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
- aid: octobat:octobat-transactions-api
  name: Octobat Transactions API
  description: Payments registered against invoices for reconciliation and tax reporting.
  humanURL: https://docs.octobat.com/octobat/development/api
  baseURL: https://apiv2.octobat.com
  tags:
  - Transaction
  tags_raw:
  - Transactions
  properties:
  - type: OpenAPI
    url: openapi/octobat-transactions-api-openapi.yml
  - type: Documentation
    url: https://docs.octobat.com/octobat/development/api
  - type: APIReference
    url: https://v2apidoc.octobat.com
  - type: PostmanCollection
    url: collections/octobat.postman_collection.json
  - type: OpenCollection
    url: collections/octobat.opencollection.json
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/register-transactions-in-octobat
  - type: Documentation
    url: https://docs.octobat.com/octobat/integrations-docs/generic-integration/tax-calculation-for-a-cart-or-an-order
common:
- type: AgenticAccess
  url: agentic-access/octobat-agentic-access.yml
- type: DomainSecurity
  url: security/octobat-domain-security.yml
- type: Authentication
  url: authentication/octobat-authentication.yml
- type: GitHubOrganization
  url: https://github.com/0ctobat
- type: LinkedIn
  url: https://www.linkedin.com/company/octobat
- type: Website
  url: https://www.octobat.com
- type: Documentation
  url: https://docs.octobat.com
- type: Plans
  url: plans/octobat-plans-pricing.yml
- type: RateLimits
  url: rate-limits/octobat-rate-limits.yml
- type: FinOps
  url: finops/octobat-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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