Simulate Spend Sentinel policy defense and delivery predicates

Machine-to-Machine Conformance API · simulate-spend-sentinel

$0.005 / call 3 free calls/day No signup

Run synthetic prompt-injection halts, malformed-delivery rejection, and bounded-spend eligibility examples under AP2 envelopes. No live escrow, refund, facilitator or chain action occurs.

Honest Scope Guarantee

Deterministic simulation of spend-policy and delivery-predicate scenarios (AP2 envelopes, injection halts, bounded budgets). No live funds, live agents, escrow, refunds, or live policies are touched.

Run in Playground (Free) Buy Card Credits Agent Quickstart

Quickstart & Execution

cURL (20 Free Calls/Day • Zero Authentication Required)

curl -X POST https://api.code402.dev/v1/tools/simulate-spend-sentinel/call \
  -H "content-type: application/json" \
  -d '{"scenario":"injection"}'

No API key needed for the free daily tier. When daily quota exhausts, the endpoint replies with HTTP 402 Payment Required specifying the exact USDC amount. Machines sign an EIP-3009 transfer on Base L2; human engineers buy card credits. Every paid execution returns a cryptographically signed XDR-1 receipt for zero-knowledge audit trails.

Input Parameters

Field	Type	Meaning & Constraints
`scenario`	`string`	Simulation scenario: 'injection' (prompt attack), 'garbage' (bad subagent output), or 'provable' (verified settlement). Default 'injection'.

Response Format

Deterministic JSON payload fields: tool, valid, is_synthetic, simulated, scenario, status, code, verdict, requested_amount_usdc, actual_wallet_loss_usdc, action_taken, settlement_recipient, telemetry, scope. Paid responses also carry an offline-verifiable receipt object (XDR-1, secp256k1 signature recoverable to the authorized signer).

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