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

34.5/100 thin ▬ flat Agent 24/100 agent aware Full breakdown ↓
scored 2026-08-25 · rubric v0.14.0

AccessPaidSelf serve

9 APIs

Billing Invoicing Tax Compliance VAT E-Commerce Payments Fintech

Kin Score

Kin Score How this is scored →
scored 2026-08-25 · rubric v0.14.0

Composite quality — 34.5/100 · thin

Contract Quality 10.6 / 21

Developer Ergonomics 3.6 / 17

Access Clarity 6.7 / 17

Operational Transparency 3.8 / 11

Contract Governance 0.0 / 10

Discoverability 6.3 / 9

Regulatory Posture 2.8 / 15

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 Surface 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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% 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/. 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. Want it done for you? Prioritized profiling — $2,500 →

APIs 9

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

Open Collections 11

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

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.

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.
accessModel:
  pricing: paid
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Paid · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  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

Work with this as data

Every provider here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/octobat"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/octobat/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/octobat/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no email required.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.