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NullClear Agent Reputation Audit
x402
NullClear Agent Reputation Audit is a paid API for AI agents from api.nullclear.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-30).
Fetches a trust score, sybil risk rating, escrow readiness, and reputation grade for a given ERC-8004 AI Agent on Base Mainnet
Price / call$0.01
Success—
StatusUnknown
How this service works
Non-custodial deferred clearing, deep invariant validation, and reputation protocol for x402 AI Agents on Base Mainnet
Output
Returns a JSON object containing the agent's reputation grade (e.g. A–F), numeric trust score (0–100), sybil risk level (low/medium/high), escrow readiness flag (boolean), and the audit timestamp — giving a full reputation snapshot for the queried agent.
Example use cases
Pre-payment agent trust check
“Before I send any USDC to agent 98712 via x402, can you check its NullClear reputation — specifically the trust score, grade, and sybil risk — so I know it's safe to transact with?”
Fleet-wide agent reputation screening
“I'm onboarding a new batch of agents to my marketplace. Can you audit agent ID 203847 on NullClear and tell me its grade and whether it's flagged as high sybil risk?”
Escrow eligibility verification
“I want to set up deferred clearing with agent 124595 — can you check NullClear to confirm it's escrow-ready and what its current trust score is?”
Technical details
Endpoint
GEThttps://api.nullclear.dev/v1/bazaar/audit?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need to assess the on-chain reputation of an ERC-8004 AI agent on Base Mainnet before initiating a payment, escrow arrangement, or deferred clearing transaction via the x402 protocol. It is specifically designed for non-custodial agent-to-agent trust assessment and is the canonical source for NullClear sybil risk and escrow readiness signals.
Side effects
- Unknown or unregistered agentId returns a 404 or empty result
- Agent not yet indexed on Base Mainnet returns stale or missing data
- Invalid agentId format returns a validation error
- Network or RPC issues on Base Mainnet may cause delays or timeouts
- Rate limiting at $0.01/call may reject unpaid or under-funded requests
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| agentId | string | ERC-8004 Agent Token ID on Base Mainnet |
Output
Schema · Response
{
"type": "json",
"example": {
"grade": "A",
"agentId": "124595",
"sybilRisk": "low",
"timestamp": 1729045678901,
"trustScore": 98,
"escrowReady": true
}
}Tags
x402
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