Nightshift
Demo clock: +27 daysConnecting

$20.00 refunded twice on the same capture, 3s apart

Status
Needs you
At risk
$20.00
Detected (detector clock)
2026-11-23 17:06

Diagnosis

AI agent (anthropic/claude-haiku-5.5)

The buyer was refunded $20.00 twice for the same $80.00 espresso order, 3 seconds apart, so $40.00 has gone back to them. The second refund looks like an accidental duplicate (a retry without a safeguard), but PayPal shows both as completed and I can't reverse a refund from here. If nothing is done, the shop is out an extra $20.00 and the order is still unshipped.

Decisions

The agent proposes, the policy gate decides, the executor calls PayPal.

Ask the owner

Waiting for you

Agent proposed

Whether the second refund was intended, and how to recover the $20.00, depends on a decision only the owner can make, and any refund needs owner approval anyway.

Note: Refund 05X192964S9961805 returned $20.00 three seconds after an identical refund 4KS79453UN7234100 on the same $80.00 order (0X918673CW044800D). The buyer has received $40.00 total. Was the second $20.00 meant to happen? If not, decide whether to ask the

Policy said

Needs approval
  • The agent asked for a human decision.

PayPal returned

No PayPal call for this action.

Evidence

Refunds 4KS79453UN7234100 and 05X192964S9961805 both returned $20.00 from capture 8KD70378CW893191L 3 seconds apart. That pattern usually means a retry without an idempotency key, not two decisions.

capture id
8KD70378CW893191L
order id
0X918673CW044800D
first refund id
4KS79453UN7234100
first refund at
2026-10-27T17:06:39.000Z
duplicate refund id
05X192964S9961805
duplicate refund at
2026-10-27T17:06:42.000Z
amount
$20.00
seconds apart
3
order0X918673CW044800Dcapture8KD70378CW893191Lrefund4KS79453UN7234100refund05X192964S9961805

All ids are real PayPal sandbox objects; GET them with your sandbox credentials to check.

Audit trail

Detected, diagnosed, decided, executed. Live.

Detected: $20.00 refunded twice on the same capture, 3s apart
Detector
Refunds 4KS79453UN7234100 and 05X192964S9961805 both returned $20.00 from capture 8KD70378CW893191L 3 seconds apart. That pattern usually means a retry without an idempotency key, not two decisions.
Agent started triage
Agent
Agent read ledger_lookup
Agent
ledger_lookupNightshift ledgerok
args { "order_id": "0X918673CW044800D" }
Result
{"order":{"id":"0X918673CW044800D","intent":"CAPTURE","status":"COMPLETED","amountCents":8000,"currency":"USD","payer":"night-owl-mvqxter5839@example.com","cartRef":"cart-40759","description":"Espresso sampler, 4 x 250g","fulfillment":"unfulfilled","shippedAt":null,"createdAt":"2026-10-27T17:06:38.000Z","updatedAt":"2026-10-27T17:06:44.265Z","source":"webhook"},"buyer_note_untrusted":null,"authorizations":[],"captures":[{"id":"8KD70378CW893191L","orderId":"0X918673CW044800D","authorizationId":null,"status":"PARTIALLY_REFUNDED","statusReason":null,"amountCents":8000,"currency":"USD","finalCapture":true,"createdAt":"2026-10-27T17:06:38.000Z","updatedAt":"2026-10-27T17:06:44.268Z"}],"refunds":[{"id":"4KS79453UN7234100","captureId":"8KD70378CW893191L","orderId":"0X918673CW044800D","status":"COMPLETED","amountCents":2000,"currency":"USD","createdAt":"2026-10-27T17:06:39.000Z","updatedAt":"2026-10-27T17:06:44.271Z"},{"id":"05X192964S9961805","captureId":"8KD70378CW893191L","orderId":"0X918673CW044800D","status":"COMPLETED","amountCents":2000,"currency":"USD","createdAt":"2026-10-27T17:06:42.000Z","updatedAt":"2026-10-27T17:06:44.274Z"}],"failed_capture_attempts":[]}
Agent read get_refund
Agent
get_refundvia PayPal Agent Toolkitok
args { "refund_id": "05X192964S9961805" }
Result
{"id":"05X192964S9961805","amount":{"currency_code":"USD","value":"20.00"},"note_to_payer":"Sorry about the crushed bag","seller_payable_breakdown":{"gross_amount":{"currency_code":"USD","value":"20.00"},"paypal_fee":{"currency_code":"USD","value":"0.00"},"net_amount":{"currency_code":"USD","value":"20.00"},"total_refunded_amount":{"currency_code":"USD","value":"40.00"}},"custom_id":"cart-40759","status":"COMPLETED","create_time":"2026-10-27T10:06:42-07:00","update_time":"2026-10-27T10:06:42-07:00","payer":{"email_address":"sb-djk8i53501233@business.example.com","merchant_id":"D8M8MT98DPNNG"},"links":[{"href":"https://api.sandbox.paypal.com/v2/payments/refunds/05X192964S9961805","rel":"self","method":"GET"},{"href":"https://api.sandbox.paypal.com/v2/payments/captures/8KD70378CW893191L","rel":"up","method":"GET"}]}
Agent read get_refund
Agent
get_refundvia PayPal Agent Toolkitok
args { "refund_id": "4KS79453UN7234100" }
Result
{"id":"4KS79453UN7234100","amount":{"currency_code":"USD","value":"20.00"},"note_to_payer":"Sorry about the crushed bag","seller_payable_breakdown":{"gross_amount":{"currency_code":"USD","value":"20.00"},"paypal_fee":{"currency_code":"USD","value":"0.00"},"net_amount":{"currency_code":"USD","value":"20.00"},"total_refunded_amount":{"currency_code":"USD","value":"40.00"}},"custom_id":"cart-40759","status":"COMPLETED","create_time":"2026-10-27T10:06:39-07:00","update_time":"2026-10-27T10:06:39-07:00","payer":{"email_address":"sb-djk8i53501233@business.example.com","merchant_id":"D8M8MT98DPNNG"},"links":[{"href":"https://api.sandbox.paypal.com/v2/payments/refunds/4KS79453UN7234100","rel":"self","method":"GET"},{"href":"https://api.sandbox.paypal.com/v2/payments/captures/8KD70378CW893191L","rel":"up","method":"GET"}]}
Agent read get_capture
Agent
get_capturevia Nightshift REST clientok
args { "capture_id": "8KD70378CW893191L" }
Result
{"id":"8KD70378CW893191L","amount":{"currency_code":"USD","value":"80.00"},"final_capture":true,"seller_protection":{"status":"NOT_ELIGIBLE"},"seller_receivable_breakdown":{"gross_amount":{"currency_code":"USD","value":"80.00"},"paypal_fee":{"currency_code":"USD","value":"3.42"},"net_amount":{"currency_code":"USD","value":"76.58"}},"custom_id":"cart-40759","status":"PARTIALLY_REFUNDED","supplementary_data":{"related_ids":{"order_id":"0X918673CW044800D"}},"payee":{"email_address":"sb-djk8i53501233@business.example.com","merchant_id":"D8M8MT98DPNNG"},"create_time":"2026-10-27T17:06:38Z","update_time":"2026-10-27T17:06:42Z","links":[{"href":"https://api.sandbox.paypal.com/v2/payments/captures/8KD70378CW893191L","rel":"self","method":"GET"},{"href":"https://api.sandbox.paypal.com/v2/payments/captures/8KD70378CW893191L/refund","rel":"refund","method":"POST"},{"href":"https://api.sandbox.paypal.com/v2/checkout/orders/0X918673CW044800D","rel":"up","method":"GET"}]}
Agent diagnosis
Agent
The buyer was refunded $20.00 twice for the same $80.00 espresso order, 3 seconds apart, so $40.00 has gone back to them. The second refund looks like an accidental duplicate (a retry without a safeguard), but PayPal shows both as completed and I can't reverse a refund from here. If nothing is done, the shop is out an extra $20.00 and the order is still unshipped.
Agent proposed: Ask the owner
Agent
Whether the second refund was intended, and how to recover the $20.00, depends on a decision only the owner can make, and any refund needs owner approval anyway.
Policy said: needs the owner's approval
Policy gate
  • The agent asked for a human decision.