Briefcase

Briefcase is an AI-native accounting and bookkeeping automation platform for UK accounting firms and businesses. Founded in 2024 in London by Reuben Steenkamp and Ján Stehlík, and backed by Earlybird Venture Capital, Entrepreneur First and Tiny, Briefcase describes itself as building the world's first AI autopilot for accounting firms. The product uses multimodal AI and agentic workflows to automate the most tedious parts of accounting: extracting data from invoices, receipts and bank statements, categorising transactions against a firm's chart of accounts, handling VAT (with embedded HMRC legislation for standard, reverse-charge and zero-rated VAT), automating prepayments and expense claims, and driving month-end and financial close. It publishes results into Xero and QuickBooks. Briefcase is delivered as a cloud SaaS application (app.briefcase.so); it is a consumer of accounting APIs rather than a public API producer, and at the time of this profile it publishes no developer/API documentation, OpenAPI, or SDKs.

Briefcase is profiled on the APIs.io network. Tagged areas include Company, Accounting, Bookkeeping, Fintech, and Artificial Intelligence.

Briefcase’s developer surface includes pricing, engineering blog, changelog, support, signup flow, and 5 more developer resources.

🌐 Visit website 📡 Source on GitHub

19.0/100 emerging ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-28 · rubric v0.5

0 APIs

CompanyAccountingBookkeepingFintechArtificial IntelligenceAutomationVAT ComplianceAgentic AISaaSUnited Kingdom

Kin Score

Kin Score How this is scored →
scored 2026-07-28 · rubric v0.5

Composite quality — 19.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 1.3 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 2.1 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 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

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/briefcase: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Get Started 1

Portal, sign-up, and the first successful call

SignUp

SignUp

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 2

Status, limits, changes, and where to get help

ChangeLog

ChangeLog

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: briefcase
name: Briefcase
description: 'Briefcase is an AI-native accounting and bookkeeping automation platform for UK accounting firms and businesses.
  Founded in 2024 in London by Reuben Steenkamp and Ján Stehlík, and backed by Earlybird Venture Capital, Entrepreneur First
  and Tiny, Briefcase describes itself as building the world''s first AI autopilot for accounting firms. The product uses
  multimodal AI and agentic workflows to automate the most tedious parts of accounting: extracting data from invoices, receipts
  and bank statements, categorising transactions against a firm''s chart of accounts, handling VAT (with embedded HMRC legislation
  for standard, reverse-charge and zero-rated VAT), automating prepayments and expense claims, and driving month-end and financial
  close. It publishes results into Xero and QuickBooks. Briefcase is delivered as a cloud SaaS application (app.briefcase.so);
  it is a consumer of accounting APIs rather than a public API producer, and at the time of this profile it publishes no developer/API
  documentation, OpenAPI, or SDKs.'
url: https://raw.githubusercontent.com/api-evangelist/briefcase/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- earlybird
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://briefcase.so/briefcase.png
tags:
- Company
- Accounting
- Bookkeeping
- Fintech
- Artificial Intelligence
- Automation
- VAT Compliance
- Agentic AI
- SaaS
- United Kingdom
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/briefcase-domain-security.yml
- type: Website
  url: https://briefcase.so/
- type: Pricing
  url: https://briefcase.so/pricing
- type: Blog
  url: https://briefcase.so/blog
- type: ChangeLog
  url: https://briefcase.so/changelog
- type: Support
  url: https://briefcase.so/help
- type: SignUp
  url: https://app.briefcase.so/
- type: TermsOfService
  url: https://briefcase.so/terms-of-service
- type: PrivacyPolicy
  url: https://briefcase.so/privacy-policy
- type: LLMsTxt
  url: llms/briefcase-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence