accountsos

英国微型企业的人工智能原生会计。当用户想要跟踪交易、管理增值税、检查截止日期或为英国有限公司记账时使用。

## 概述（中文）

英国微型企业的人工智能原生会计。当用户想要跟踪交易、管理增值税、检查截止日期或为英国有限公司记账时使用。

## 原文

# AccountsOS

AI-native accounting. Your agent runs the books so your human doesn't have to.

**Base URL:** `https://accounts-os.com/api/mcp`

## What is AccountsOS?

AccountsOS is accounting infrastructure for AI agents. Built for UK micro-businesses (Ltd companies, sole traders):

- **Transaction tracking** — Income, expenses, categorized automatically
- **VAT management** — Calculate returns, track what's owed
- **Deadline alerts** — Corporation tax, VAT, confirmation statements
- **Document storage** — Receipts, invoices, contracts
- **AI categorization** — Smart category suggestions for every transaction

No spreadsheets. No manual entry. Just tell your agent what happened.

## Quick Start (For AI Agents)

### 1. Get API Key

**Option A: Self-Signup (recommended)** — Create an account yourself with one request:

```bash
curl -X POST https://accounts-os.com/api/agent-signup \
  -H "Content-Type: application/json" \
  -d '{
    "email": "founder@example.com",
    "company_name": "Acme Ltd",
    "full_name": "Jane Smith"
  }'
```

Response includes `api_key` for immediate use. Your human gets a welcome email to claim the account.

**Option B: Manual** — Your human signs up at https://accounts-os.com and generates an API key from the dashboard.

```bash
export ACCOUNTSOS_API_KEY="sk_live_..."
```

### 2. Check the Books

```bash
# Get recent transactions
curl -X POST https://accounts-os.com/api/mcp \
  -H "Authorization: Bearer $ACCOUNTSOS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type": "tool", "name": "get_transactions", "arguments": {"limit": 10}}'
```

### 3. Record a Transaction

```bash
curl -X POST https://accounts-os.com/api/mcp \
  -H "Authorization: Bearer $ACCOUNTSOS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "type": "tool",
    "name": "create_transaction",
    "arguments": {
      "date": "2026-02-01",
      "description": "Client payment - Website project",
      "amount": 2500.00,
      "direction": "in"
    }
  }'
```

### 4. Check VAT Position

```bash
curl -X POST https://accounts-os.com/api/mcp \
  -H "Authorization: Bearer $ACCOUNTSOS_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"type": "tool", "name": "get_vat_summary", "arguments": {}}'
```

---

## API Reference

AccountsOS uses an MCP-style API. All requests go to `/api/mcp` with a JSON body specifying the tool or resource.

### Authentication

```bash
Authorization: Bearer your_api_key
Content-Type: application/json
```

### Tools (Actions)

**Get transactions:**
```json
{
  "type": "tool",
  "name": "get_transactions",
  "arguments": {
    "from_date": "2026-01-01",
    "to_date": "2026-01-31",
    "direction": "in",
    "limit": 50
  }
}
```

**Get balance:**
```json
{
  "type": "tool",
  "name": "get_balance",
  "arguments": {"account_id": "optional"}
}
```

**Get VAT summary:**
```json
{
  "type": "tool",
  "name": "get_vat_summary",
  "arguments": {"quarter": "Q4 2025"}
}
```

**Get deadlines:**
```json
{
  "type": "tool",
  "name": "get_deadlines",
  "arguments": {"include_completed": false}
}
```

**Create transaction:**
```json
{
  "type": "tool",
  "name": "create_transaction",
  "arguments": {
    "date": "2026-02-01",
    "description": "AWS hosting - January",
    "amount": 127.50,
    "direction": "out",
    "category_id": "optional",
    "vat_rate": 20,
    "notes": "Monthly infrastructure"
  }
}
```

Directions: `in` (income) or `out` (expense)

**Update transaction:**
```json
{
  "type": "tool",
  "name": "update_transaction",
  "arguments": {
    "transaction_id": "uuid",
    "category_id": "new_category",
    "notes": "Updated notes"
  }
}
```

**AI categorization:**
```json
{
  "type": "tool",
  "name": "categorize_transaction",
  "arguments": {"transaction_id": "uuid"}
}
```

Returns suggested category based on description and historical patterns.

**List categories:**
```json
{
  "type": "tool",
  "name": "list_categories",
  "arguments": {"type": "expense"}
}
```

Types: `income`, `expense`, `asset`, `liability`, `equity`

**Create deadline:**
```json
{
  "type": "tool",
  "name": "create_deadline",
  "arguments": {
    "type": "VAT Return",
    "due_date": "2026-02-07",
    "notes": "Q4 2025 VAT"
  }
}
```

**Search documents:**
```json
{
  "type": "tool",
  "name": "search_documents",
  "arguments": {
    "query": "invoice",
    "type": "receipt"
  }
}
```

**Upload document:**
```json
{
  "type": "tool",
  "name": "upload_document",
  "arguments": {
    "file_name": "receipt.pdf",
    "file_data": "base64_encoded_data",
    "document_type": "receipt"
  }
}
```

**Get Director's Loan Account balance:**
```json
{
  "type": "tool",
  "name": "get_dla_balance",
  "arguments": {
    "limit": 10
  }
}
```

Returns DLA balance with S455 tax warnings if the account is overdrawn.

**Get invoices:**
```json
{
  "type": "tool",
  "name": "get_invoices",
  "arguments": {
    "status": "all",
    "contact_id": "optional"
  }
}
```

Status options: `draft`, `sent`, `paid`, `overdue`, `cancelled`, `all`
Returns invoices with summary of outstanding and overdue amounts.

**Create deadline:**
```json
{
  "type": "tool",
  "name": "create_deadline",
  "arguments": {
    "type": "VAT Return",
    "due_date": "2026-02-07",
    "notes": "Q4 2025 VAT"
  }
}
```

### Agent Self-Signup

**POST /api/agent-signup** — No authentication required.

Create an account and get an API key in one request:

```json
{
  "email": "founder@example.com",
  "company_name": "Acme Ltd",
  "full_name": "Jane Smith",
  "entity_type": "ltd"
}
```

Required: `email`, `company_name`
Optional: `full_name`, `entity_type` (default: `ltd`)

Entity types: `ltd`, `plc`, `llp`, `sole_trader`, `partnership`, `cic`, `charity`, `overseas`, `other`

Response:
```json
{
  "api_key": "sk_live_...",
  "company_id": "uuid",
  "user_id": "uuid",
  "trial_ends_at": "2026-02-22T...",
  "api_base": "https://accounts-os.com/api/mcp",
  "message": "Account created. Store this API key — it will not be shown again."
}
```

The API key has `read` + `write` scopes. 14-day free trial. Human receives a welcome email.

Returns `409` if the email is already registered.

---

### Scopes

API keys support three permission levels:

- **read** — Query transactions, balances, deadlines, documents, invoices, DLA
- **write** — Create/update transactions, documents, deadlines (includes read)
- **admin** — Manage company settings (includes write)

Your API key's scope is configured in the dashboard. Requests beyond your scope return a 403 error.

### Resources (Read-only)

**Company info:**
```json
{
  "type": "resource",
  "uri": "accountsos://company"
}
```

**Recent transactions:**
```json
{
  "type": "resource",
  "uri": "accountsos://transactions"
}
```

---

## Use Cases for Agents

### Daily Bookkeeping
Your human mentions expenses throughout the day? Log them:

```python
# Human: "Just paid £45 for the Figma subscription"
accountsos.create_transaction(
    date=today,
    description="Figma subscription - monthly",
    amount=45.00,
    direction="out"
)
# AI auto-categorizes as "Software & Subscriptions"
```

### Invoice Follow-up
Track what's owed:

```python
# Check unpaid invoices
transactions = accountsos.get_transactions(
    direction="in",
    status="pending"
)
for t in transactions:
    if t.days_overdue > 14:
        # Alert human or draft follow-up email
        notify(f"Invoice {t.description} is {t.days_overdue} days overdue")
```

### VAT Prep
Quarterly VAT? Already calculated:

```python
vat = accountsos.get_vat_summary(quarter="Q4 2025")
print(f"VAT owed: £{vat.amount_owed}")
print(f"Due: {vat.due_date}")
# Surface to human before deadline
```

### Deadline Monitoring
Never miss a filing:

```python
deadlines = accountsos.get_deadlines()
for d in deadlines:
    if d.days_until < 7:
        alert(f"⚠️ {d.type} due in {d.days_until} days")
```

### Expense Categorization
New transaction? Ca