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AgentGuard Pre-Trade Safety Screen
x402
AgentGuard Pre-Trade Safety Screen is a paid API for AI agents from agentguard.hergertsynthora.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-15).
Returns a signed SAFE/CAUTION/BLOCK risk verdict for an EVM address by combining OFAC/EU/UN/UK sanctions screening, stablecoin peg deviation, and on-chain counterparty signals into one Ed25519-signed attestation.
Price / call$0.005
Success—
StatusUnknown
How this service works
One signed call returns a pre-execution risk verdict (SAFE/CAUTION/BLOCK) for payment/DeFi agents: OFAC/EU/UN/UK sanctions screening + stablecoin peg deviation (bps) + counterparty on-chain signal. Ed25519-signed attestation. Scoring only — never executes trades.
Output
A signed Ed25519 attestation containing a risk verdict (SAFE, CAUTION, or BLOCK), sanctions match details across OFAC SDN, EU, UN, and UK lists, stablecoin peg deviation in basis points from $1.00, and on-chain counterparty risk signals for the submitted address and optional counterparty.
Example use cases
Example prompt
“Before I send 5000 USDC to 0x3fC91A3afd70395Cd496C647d5a6CC9D4B2b7FAD on Base, run a pre-trade safety check — screen it against OFAC and international sanctions lists, check the USDC peg deviation, and give me a SAFE, CAUTION, or BLOCK verdict with a signed attestation.”
Technical details
Endpoint
POSThttps://agentguard.hergertsynthora.com/serviceWhen to prefer
Use this endpoint when an AI payment or DeFi agent needs a single, signed, machine-readable pre-trade safety verdict before executing any on-chain transaction. It is ideal when you need simultaneous multi-jurisdiction sanctions screening (OFAC, EU, UN, UK), stablecoin depeg risk, and counterparty on-chain signals in one atomic call — rather than querying each data source separately. Prefer this over generic compliance APIs when you need an Ed25519-signed attestation that can be stored as proof of due diligence.
Side effects
- Invalid or malformed EVM address returns a 400 error
- Unsupported chain identifier returns a validation error
- Stablecoin symbol not recognized defaults to USDC/USDT or errors
- Network timeout from on-chain data providers may delay or fail the response
- Sanctions database temporarily unavailable may return a degraded or partial result
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| chain | string | base|ethereum|polygon|arbitrum|optimism |
| addressrequired | string | EVM address to evaluate (0x…, required) |
| stablecoin | string | settlement stablecoin (default usd-coin,tether) |
| counterparty | string | optional 2nd address |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| ok | boolean | |
| niche | string | |
| result | object | |
| receipt | object |
Tags
x402
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