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SignGate Agent Buyer Identity Preflight – Sumsub Case Management Evidence
x402
SignGate Agent Buyer Identity Preflight – Sumsub Case Management Evidence is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).
Retrieves Sumsub case management evidence and risk assessment to verify whether an AI agent buyer is authorized to purchase a specific x402 API, dataset, or tool.
Price / call$0.05
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 containing the blockchain network identifier (e.g. eip155:8453), product name, risk score (0–100), risk level (e.g. 'low'), risk flags array, plus nested identity, activity, assessment, and provenance objects describing the buyer's compliance posture for the requested x402 product.
Example use cases
Pre-purchase agent compliance check
“Check whether our AI agent is cleared to buy the new x402 financial data API — use Sumsub case ID 'fin-case-9921' to pull the risk assessment before we authorize the payment.”
Sensitive dataset purchase gating
“Before the agent proceeds, I need a preflight verification on Sumsub case 'kyc-ds-4477' to confirm the buyer identity fits the sensitivity level of this medical dataset we're trying to access via x402.”
Audit trail for agent purchase approval
“Pull the Sumsub case management evidence for reference ID 'txn-ref-00382' so I can review the identity assessment and risk flags before we log this as an approved x402 agent purchase.”
Technical details
Endpoint
GEThttps://base-agent-preflight.bytoken2023.workers.dev/v1/x402/sumsub/case-management-evidenceWhen to prefer
Choose this endpoint when an AI agent needs to perform a pre-purchase compliance and identity governance check specifically within the x402 payment ecosystem using Sumsub case data. It is ideal when the purchasing agent's buyer role, risk score, and policy approval status must be verified before committing to a microtransaction for a sensitive API, dataset, or tool. Prefer this over generic KYC lookups when you need x402-native purchase governance tied to Sumsub case management evidence.
Side effects
- Missing or invalid case_id format returns a 400 validation error
- Unknown case_id not found in Sumsub returns a 404 not found response
- Sumsub backend unavailable causes a 503 or timeout
- Unauthorized caller (missing or invalid payment token) returns a 402 payment required
- Case in a non-terminal state may return incomplete assessment data
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "eip155:8453",
"product": "sumsub-case-management-evidence",
"assessment": {
"flags": [],
"risk_level": "low",
"risk_score": 0
}
}
}Tags
x402
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