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GW8 Signal API – Should-I-Pay Decision
x402
GW8 Signal API – Should-I-Pay Decision is a paid API for AI agents from micro-saas-agent.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-22).
Combines spend-policy enforcement and x402 seller reputation into a single pay/ask_human/deny verdict for an AI agent contemplating a micropayment
Price / call$0.02
Success—
StatusUnknown
How this service works
[Payment decision: spend policy + seller reputation risk check, one verdict] Right before an AI agent pays: POST {payment, policy, seller} -> ONE verdict pay / dont_pay / ask_human. Runs the spend-policy check (limits, rolling cap, categories, allow/deny, hours, assets/chains, approval threshold) and the x402 seller reputation check (buyers, wash share, age, concentration), with reasons and one signed receipt. Stateless; never pays anyone. No charge if seller data is down. $0.02 USDC.
Output
Returns a JSON object with: a spend decision (allow/deny), a seller reputation score (0-100) and verdict (safe/caution/danger), an overall verdict (allow/ask_human/deny), a reasons array explaining each factor, and a signed Ed25519 decision receipt with a verify URL — giving the agent everything needed to act or escalate.
Example use cases
Autonomous research agent payment gate
“My research agent is about to pay 0.05 USDC on Base to seller 0x1111111111111111111111111111111111111111 for a data API call. My policy caps each transaction at $1 and the rolling 24h cap is $10 with $2.40 spent so far. Check the seller's reputation and tell me if it's safe to auto-pay or if I should hold for human approval.”
Budget guardrail for multi-agent fleet
“I'm running a fleet of agents that each have a $0.50 per-call limit and a $5 daily rolling cap. Before agent 'pricing-agent-7' pays a crypto market data endpoint at 0x2222222222222222222222222222222222222222 for 0.02 USDC on Base, run a should-I-pay check so I know if the spend is in policy and the seller has a good reputation.”
Human-in-the-loop payment approval flow
“My agent wants to pay an x402 seller at 0x3333333333333333333333333333333333333333 for 0.30 USDC on Base — that's above my $0.25 auto-approve threshold. Run a should-I-pay check with my policy and tell me the seller score so I can decide whether to approve this manually.”
Technical details
Endpoint
POSThttps://micro-saas-agent.onrender.com/api/pay/should-i-pay?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs a single, combined verdict that covers both spend-policy compliance and x402 seller trustworthiness before committing a USDC micropayment on Base. It is especially valuable for autonomous agents that must auto-pay or escalate to a human without separate calls for policy and reputation. Prefer it over building custom spend-policy logic when you want signed, auditable receipts and no charge on failure.
Side effects
- Missing or malformed policy object returns validation error, no charge
- Unknown seller address returns unknown verdict with ask_human escalation per sellerRules
- Rolling cap already exceeded returns deny verdict
- Network timeout or server error on Render returns no charge (settle-after-data guarantee)
- Invalid chain or currency not in allowedAssets/allowedChains returns policy denial
- Malformed payment timestamp causes request rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| policy | object | |
| seller | object | |
| payment | object | |
| sellerRules | object |
Output
Schema · Response
{
"type": "json",
"example": {
"spend": {
"decision": "allow"
},
"engine": "gw8-should-i-pay/1",
"seller": {
"score": 58,
"verdict": "caution"
},
"reasons": [
{
"action": "ask_human",
"detail": "seller verdict caution (score 58) -> ask_human",
"source": "seller_reputation"
}
],
"verdict": "ask_human",
"decisionReceipt": {
"alg": "Ed25519",
"query": {
"verdict": "ask_human",
"sellerScore": 58,
"requestSha256": "…",
"sellerVerdict": "caution",
"spendDecision": "allow"
},
"signed": true,
"endpoint": "POST /api/pay/should-i-pay",
"accessType": "PAY_DECISION",
"verify_url": "https://micro-saas-agent.onrender.com/api/receipt/verify"
}
}
}Tags
x402
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