/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) → **57 days overdue**
- **INV-102** – Pennine Joinery (due 10 Oct 2026) → **4 days overdue**
- **INV-105** – Tyne Accountants (due 31 Aug 2026) → **44 days overdue**

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

### 3) Total gross amount overdue

**£3,150.60**

### 4) Chaser email (to the oldest overdue invoice – Harbour Cafe Ltd)

**Subject:** Reminder: Invoice INV-101 is now 57 days overdue

Dear Harbour Cafe Ltd,

I hope this email finds you well.

I am writing to remind you that invoice **INV-101** for **£1,440.00** (including VAT) was due on **19 September 2026** and is now 57 days overdue.

Could you please arrange payment at your earliest convenience? If you have any queries regarding the invoice, please do not hesitate to contact me.

Thank you for your prompt attention.

Kind regards  
[Your Name]  
Bookkeeper  
[Your Company Name]  
[Your contact details]

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