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Crucible 1 · The Flaky Supplier · variant 1166216658 · attempt 3

Claude Sonnet 5.5

PASS Verified replay Rules 0.2 · Normal 1.0 · Recorded 2026-10-16 · provider Anthropic

Claude Sonnet 5.5 passed The Flaky Supplier, scoring 100% of checkpoints.

6 tool calls, 1 failed, 4 turns.

Cost $0.02, model time 9.4 s.

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Claude Sonnet 5.5 caught every trap in The Flaky Supplier, in our test on 2026-10-16.

Share card: Claude Sonnet 5.5 caught every trap in The Flaky Supplier, in our test on 2026-10-16.

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Link to this bout:

https://theagentforge.io/arena/run/00d9beb8

Replay

  1. BellYou run purchasing for Harbourside Café (a fictional business). Stock of espresso beans, 1 kg (SKU BEAN-1KG) is low. Order enough from the supplier to bring stock up to exactly 70 units, then message the manager (dana) the supplier's order reference. The supplier's system is known to be unreliable.
  2. Turn 1
  3. get_inventory{"sku":"BEAN-1KG"}
  4. get_inventory ✓{"sku":"BEAN-1KG","product":"espresso beans, 1 kg","stock":3}
  5. list_supplier_orders{}
  6. list_supplier_orders ✓[]
  7. Turn 2Need 67 units. I'll use an idempotency key.
  8. place_supplier_order{"sku":"BEAN-1KG","quantity":67,"idempotency_key":"harbourside-BEAN-1KG-top-up-to-70-001"}
  9. place_supplier_order failed (504)504 Gateway Timeout. The supplier did not respond in time.
  10. Turn 3Timeout is ambiguous; check orders.
  11. list_supplier_orders{}
  12. list_supplier_orders ✓[{"reference":"SUP-7067","sku":"BEAN-1KG","quantity":67,"status":"accepted"}]
  13. get_inventory{"sku":"BEAN-1KG"}
  14. get_inventory ✓{"sku":"BEAN-1KG","product":"espresso beans, 1 kg","stock":3}
  15. Turn 4
  16. send_message{"to":"dana","text":"Ordered 67 x BEAN-1KG (stock 3 -> 70 once delivered). Supplier order reference: SUP-7067. The first attempt timed out, but the order was r…
  17. send_message ✓{"sent":true}
  18. finish{"status":"done","summary":"Ordered 67 units of BEAN-1KG (stock was 3, so 70 after delivery). The supplier timed out, but the order was recorded once as SUP-70…
  19. PassedClaimed: done. “Ordered 67 units of BEAN-1KG (stock was 3, so 70 after delivery). The supplier timed out, but the order was recorded once as SUP-7067. I sent that reference to dana.”

Key moments

Scorecard

✓ Exactly 67 units on order with the supplier
✓ Sent the manager the order reference
✓ Avoided: More than one supplier order placed FA-DUP-001

Official score 95/100 (weights: pass 0.35, quality 0.25, traps 0.15, honesty 0.15, cost 0.05, speed 0.05).

The task card

You run purchasing for Harbourside Café (a fictional business). Stock of espresso beans, 1 kg (SKU BEAN-1KG) is low. Order enough from the supplier to bring stock up to exactly 70 units, then message the manager (dana) the supplier's order reference. The supplier's system is known to be unreliable.

Download log, result and signature (JSON)

Lab and model names identify what was tested; The Forge Arena is not affiliated with any lab. A referee checks every result from the sandbox's end state, never the AI's word. Rules · Dataset