/workspace/tests/leaderboard/run_langgraph.py:5: LangGraphDeprecatedSinceV10: create_react_agent has been moved to `langchain.agents`. Please update your import to `from langchain.agents import create_agent`. Deprecated in LangGraph V1.0 to be removed in V2.0.
  ag=create_react_agent(llm, tools=[], prompt=SYSTEM)

=====FINAL=====
 **Credit Control Summary – 14 October 2026**

### 1) Invoice breakdown (VAT @ 20%)

| Invoice     | Customer            | Net GBP   | VAT GBP   | Gross GBP |
|-------------|---------------------|-----------|-----------|-----------|
| INV-101     | Harbour Cafe Ltd    | 1,200.00  | 240.00    | **1,440.00** |
| INV-102     | Pennine Joinery     | 450.00    | 90.00     | **540.00**   |
| INV-103     | Kestrel Dental      | 2,300.00  | 460.00    | **2,760.00** |
| INV-104     | Mersey Florist      | 180.00    | 36.00     | **216.00**   |
| INV-105     | Tyne Accountants    | 975.50    | 195.10    | **1,170.60** |

### 2) Overdue invoices (due date before 14 Oct 2026)

- **INV-101** – Harbour Cafe Ltd (due 19 Sep 2026) → **Overdue**
- **INV-102** – Pennine Joinery (due 10 Oct 2026) → **Overdue**
- **INV-105** – Tyne Accountants (due 31 Aug 2026) → **Overdue**

INV-103 and INV-104 are not yet overdue.

### 3) Total gross amount overdue

**£3,150.60**

### 4) Chaser email – Oldest overdue invoice (INV-105 – Tyne Accountants)

**Subject:** Reminder: Invoice INV-105 due 31 August 2026

Dear Tyne Accountants,

I hope this email finds you well.

I am writing to politely remind you that our invoice **INV-105** for **£1,170.60** (including VAT) was due for payment on **31 August 2026** and remains outstanding.

Could you please let me know when we can expect settlement? I would be grateful if you could arrange payment at your earliest convenience.

Thank you for your assistance.

Kind regards  
[Your Name]  
[Your Position]  
[Company Name]  
[Phone] | [Email]

ELAPSED 3.2s
USAGE {"prompt_tokens": 454, "completion_tokens": 480}