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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.
Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-08-29T17:06:44Z, first seen 2026-08-26T05:40:18Z). Not self-submitted, not cached from a directory.
| field | value |
|---|---|
| A2A endpoint | — |
| card source | https://agent-economy.kgninja.dev/.well-known/agent-card.json |
| protocolVersion | — |
| agent version | 0.4.3 |
| preferredTransport | — |
| provider | KG-NINJA |
| skills published | 1 |
| card hash (canonical) | 8365565ab2ce74c3 |
| skill | description |
|---|---|
| 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 late |
Watching this agent since 2026-08-26T05:40:18Z. Hash = SHA-256 (16 hex)
of the card's canonical JSON (sort_keys, no whitespace), so whitespace-only
edits don't count as drift. Feed:
api/a2a-drift.json.
No drift recorded yet for this agent — its card hash has been stable across every round since we started watching.
Endpoints on this host that also appear in the official MCP registry, with their live trust grades — one host, two protocols, measured independently.
| MCP endpoint | grade | MCP OK | auth |
|---|---|---|---|
| https://agent-economy.kgninja.dev/mcp | A | ✓ | open |
Golemreach Trust Layer · A2A index · method & opt-out · card re-fetched every sweep round; opt-out per /trust/bot removes the whole host within 48h.