Discovery pack · Buyer agents, marketplaces and paid-tool integrators

Preserve proof from x402 payment through delivery

Walk a caller-supplied purchase artifact through payment preflight, response-header shape, settlement transaction shape, receipt, delivery hash, idempotency and retry safety. It validates evidence already held by the buyer; it never reconstructs a missing receipt or performs a payment.

x402 payment receiptx402 delivery proofPayment-Response headeragent purchase auditsettlement transaction proofidempotent x402 retry

Human → agent handoff

Share the job, not a directory.

Every route below has its own price, schema and bounded AgentCash command. Copying a command preserves this pack as a measurable discovery source.

https://api.delx.ai/api/v1/x402/start?q=verify%20an%20x402%20payment%20settlement%20response%20and%20delivered%20result%20without%20exposing%20wallet%20secrets

api-integration · POST /api/v1/x402/payment-preflightx402 Payment Preflight

util_x402_payment_preflight

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/payment-preflight -m POST -H 'x-delx-source: discovery-pack-prove-x402-payment-and-delivery' --max-amount 0.002 -b '{"requirements":{"accepts":[{"scheme":"exact","network":"eip155:8453","amount":"1000","payTo":"0x1111111111111111111111111111111111111111","expires":1786272600}]},"max_amount_usdc":0.002,"allowed_networks":["eip155:8453"],"now_epoch_seconds":1786272500}'

$0.002

commercial-operations · POST /api/v1/x402/x402-response-header-shapeX402 Response Header Shape

util_x402_response_header_shape

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/x402-response-header-shape -m POST -H 'x-delx-source: discovery-pack-prove-x402-payment-and-delivery' --max-amount 0.001 -b '{"header":"eyJzdWNjZXNzIjp0cnVlfQ=="}'

$0.001

commercial-operations · POST /api/v1/x402/x402-settlement-tx-shapeX402 Settlement Tx Shape

util_x402_settlement_tx_shape

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/x402-settlement-tx-shape -m POST -H 'x-delx-source: discovery-pack-prove-x402-payment-and-delivery' --max-amount 0.001 -b '{"network":"eip155:8453","transaction":"0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"}'

$0.001

commercial-operations · POST /api/v1/x402/x402-delivery-receipt-checkX402 Delivery Receipt Check

util_x402_delivery_receipt_check

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/x402-delivery-receipt-check -m POST -H 'x-delx-source: discovery-pack-prove-x402-payment-and-delivery' --max-amount 0.001 -b '{"receipt":{"payment_id":"pay-1","resource":"https://api.delx.ai/x402/utility/example","amount_raw":"1000","delivered":true}}'

$0.001

commercial-operations · POST /api/v1/x402/x402-delivery-hash-checkX402 Delivery Hash Check

util_x402_delivery_hash_check

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/x402-delivery-hash-check -m POST -H 'x-delx-source: discovery-pack-prove-x402-payment-and-delivery' --max-amount 0.001 -b '{"text":"delivered-result","expected_sha256":"7ef67e6a0c33e752d9848702556ca7c63ce63718b2e62b10d1b1d2386e4db0cc"}'

$0.001

commercial-operations · POST /api/v1/x402/x402-idempotency-checkX402 Idempotency Check

util_x402_idempotency_check

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/x402-idempotency-check -m POST -H 'x-delx-source: discovery-pack-prove-x402-payment-and-delivery' --max-amount 0.001 -b '{"payment_key":"job-42","delivery_key":"job-42"}'

$0.001

commercial-operations · POST /api/v1/x402/x402-retry-safety-checkX402 Retry Safety Check

util_x402_retry_safety_check

npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/x402-retry-safety-check -m POST -H 'x-delx-source: discovery-pack-prove-x402-payment-and-delivery' --max-amount 0.001 -b '{"payment_settled":false,"delivery_received":false,"idempotency_key_present":true}'

$0.001

Machine-readable path

Preserve proof from x402 payment through delivery

Share the job, not a directory.

Inspect the graph.

Related discovery packs.