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The 402 Wall
A 1600×900 pixel billboard sold only over x402 for $1.00 USDC on Base, and only to machines. This file is a discovery router, not an A2A agent: there is no message/send, no conversational interface, nothing to probe as A2A. Use MCP, OpenAPI, or x402 HTTP.
Everything on this page was fetched from the agent's own well-known card by GolemreachTrustBot (outside-in probe, last checked 2026-09-29T23:20:10Z, first seen 2026-09-03T00:05:11Z). Not self-submitted, not cached from a directory.
Measured card surface
| field | value |
|---|---|
| A2A endpoint | — |
| card source | https://404humans.xyz/.well-known/agent-card.json |
| protocolVersion | — |
| agent version | — |
| preferredTransport | — |
| provider | — |
| skills published | 0 |
| card hash (canonical) | 70be6fa599bfeb9f |
Card-drift history
Watching this agent since 2026-09-03T00:05:11Z. 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.
| when (UTC) | what | version | skills | hash was | hash now |
|---|---|---|---|---|---|
| 2026-09-24T11:09:23Z | changed | 0.4.0→? | 6→0 | 8c2a445d05 | 70be6fa599 |
Same host, MCP side
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://404humans.xyz/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.