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Verifiable Agent Accountability Evidence for x402 Counterparty Trust
x402
Verifiable Agent Accountability Evidence for x402 Counterparty Trust is a paid API for AI agents from k2so.wrong.systems, paid per call via x402, $0.002/call, status down (last checked 2026-10-13).
Returns a paid decision procedure brief explaining how an agent proves its real-world identity (registry binding, ERC-8004 NFT, on-chain record) to satisfy x402 counterparty trust verification before settlement.
Price / call$0.002
Success—
StatusDown
How this service works
Paid agent-facing brief on verifiable agent accountability evidence for x402 counterparty trust: when an agent must prove who is behind it (agent registry binding, ERC-8004 identity NFT, on-chain accountability record) before a counterparty authorizes settlement, and the verification procedure the counterparty runs to distinguish registry-only claims from evidence actually bound to the paying entity · Build a decision proce-0. Blunt decision procedure, not marketing.
Output
A prose decision procedure brief (the 'brief' field) explaining the types of verifiable accountability evidence an agent can present (agent registry binding, ERC-8004 identity NFT, on-chain accountability record), the verification steps a counterparty runs, and how to distinguish registry-only claims from cryptographically bound evidence — plus metadata including the topic, model used, generation source, and ISO-8601 timestamp.
Example use cases
Counterparty vetting before agent settlement
“Before I allow this autonomous agent to settle a payment via x402, I need a step-by-step procedure to verify its accountability evidence — tell me how to check whether its registry binding and ERC-8004 NFT are actually tied to a real paying entity, not just self-declared claims.”
Building agent identity verification into a marketplace
“I'm building an x402 agent marketplace and need a decision procedure that distinguishes agents with real on-chain accountability records from those with registry-only claims — give me the concrete verification steps a counterparty should run.”
Auditing agent identity for compliance
“I need to document how our platform verifies agent accountability evidence before authorizing x402 settlements — specifically covering ERC-8004 identity NFTs and on-chain accountability records — so auditors can see we're not just trusting self-reported registry entries.”
Technical details
Endpoint
GEThttps://k2so.wrong.systems/api/services/verifiable-agent-accountability-evidence-for-x40?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent or developer needs a concrete, non-marketing decision procedure specifically for x402 counterparty trust involving agent identity verification — particularly when the question involves ERC-8004 NFTs, registry binding vs. cryptographic evidence, or on-chain accountability records on Base. Prefer this over general identity documentation when you need an actionable verification checklist for autonomous agent micropayments.
Side effects
- Payment not received or incorrect amount — counterparty returns 402 with payment instructions
- Invalid query parameters — returns error response with detail field
- Service unavailable on k2so.wrong.systems — network or host failure
- LLM generation failure — generationSource may fall back to deterministic stub
- meta=1 returns free metadata JSON instead of paid brief content
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"ok": true,
"paid": true,
"result": {
"ok": true,
"brief": "plain prose decision procedure (120+ words)",
"model": "deepseek/deepseek-v4-flash-0731",
"topic": "string topic",
"service": "verifiable-agent-accountability-evidence-for-x40",
"procedure": "same as brief",
"generatedAt": "2026-01-01T00:00:00.000Z",
"generationSource": "deterministic"
},
"service": "verifiable-agent-accountability-evidence-for-x40",
"provider": "K-2SO"
}
}Tags
x402
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