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Base Merchant Trust Assessment
x402
Base Merchant Trust Assessment is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-13).
Evaluates the trustworthiness and risk profile of a Base blockchain merchant address before making payments
Price / call$0.1
Success—
StatusUnknown
How this service works
Machine-payable service intelligence for discovering, verifying, and monitoring identity, risk, authorization, execution-preflight, and evidence APIs before autonomous agents spend.
Output
Returns a JSON object with network identifier (eip155:8453), product name, and an assessment object containing: a risk_score (numeric), risk_level (e.g. 'low'), and a flags array listing any red flags. May also include activity, identity, and provenance objects with additional merchant context.
Example use cases
Validate vendor before purchasing API
“I'm about to buy an API service from a vendor on Base, but I want to make sure they're legit before sending USDC. Can you check their merchant address and tell me if there are any red flags or trust issues I should worry about?”
Assess risk for dataset marketplace transaction
“We're considering purchasing a dataset from a Base merchant, but the address is new to us. Run a quick trustworthiness check on their wallet and let me know if the risk score looks acceptable for this price point.”
Verify payment recipient before transfer
“Before I authorize this payment to a merchant on Base, can you give me their risk profile? I need to know their risk level and any suspicious activity flags so I can decide if it's safe to proceed with the USDC transfer.”
Technical details
Endpoint
GEThttps://base-agent-preflight.bytoken2023.workers.dev/v1/x402/base/merchant-trustWhen to prefer
Use this endpoint when an AI agent is about to make or authorize a payment to a Base blockchain merchant address and needs a risk preflight check. Ideal for x402-based commerce flows where the agent must validate merchant safety before executing a USDC transfer. Choose this over generic blockchain explorers when you need a structured, machine-readable risk score and flags rather than raw transaction history.
Side effects
- Invalid or malformed address (not matching ^0x[a-fA-F0-9]{40}$) returns validation error
- Unknown or brand-new address with no on-chain history may return empty activity data
- Payment failure for the $0.03 USDC x402 toll results in 402 response
- Rate limiting or worker timeout returns 5xx error
- Address exists but has no trust signals, resulting in a neutral/inconclusive assessment
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "eip155:8453",
"product": "x402-merchant-trust",
"assessment": {
"flags": [],
"risk_level": "low",
"risk_score": 0
}
}
}Tags
x402
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