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SignGate Wallet Dossier – Agent Buyer Identity Preflight
x402
SignGate Wallet Dossier – Agent Buyer Identity Preflight is a paid API for AI agents from base-agent-preflight.bytoken2023.workers.dev, paid per call via x402, $0.03/call, status unknown (last checked 2026-09-14).
Returns a risk assessment and identity dossier for a blockchain wallet address, indicating whether an AI agent buyer passes governance checks before purchasing an x402-gated API, dataset, or tool.
Price / call$0.03
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
A JSON object containing the network, product type, risk score (numeric), risk level (e.g. 'low'), an array of flags (empty if clean), an identity object, an activity summary, and a provenance object describing the wallet's on-chain history and assessed trustworthiness.
Example use cases
Pre-purchase compliance check for agent
“My AI agent is about to buy a paid dataset via x402 on Base — can you first check whether its wallet 0x1234567890abcdef1234567890abcdef12345678 is low-risk and cleared to make that purchase?”
Flag high-risk wallet before autonomous spend
“Before my agent autonomously buys that API tool, screen the wallet 0xDeAdBeEf0000000000000000000000000000dEaD on eip155:8453 and tell me if there are any risk flags or identity issues I should know about.”
Governance review for sensitive data purchase
“We have a policy that agents can't buy sensitive datasets without a wallet risk check — can you pull a dossier on 0xFeedFace0000000000000000000000000000BEEF on the Base chain and confirm the risk level is acceptable?”
Technical details
Endpoint
GEThttps://base-agent-preflight.bytoken2023.workers.dev/v1/x402/agent-risk/wallet-dossierWhen to prefer
Use this endpoint when an AI agent needs to perform a governance or compliance preflight check before executing an x402 micropayment purchase — particularly when the product being purchased has sensitivity, price, or approval-policy constraints. Prefer this over generic blockchain explorers when you need a structured risk score and buyer-identity assessment specifically designed for the x402 agent-commerce context.
Side effects
- Invalid wallet address format (not a valid 0x... EVM address) returns an error
- Unsupported or unrecognized chain label returns an error or empty result
- Wallet with no on-chain history may return minimal identity/activity data
- Service unavailable or timeout from the Cloudflare Worker
- Rate limiting if called too frequently without payment
- Ambiguous risk flags without clear remediation guidance
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"network": "eip155:8453",
"product": "wallet-dossier",
"assessment": {
"flags": [],
"risk_level": "low",
"risk_score": 0
}
}
}Tags
x402
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