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8k4 Protocol — Cross-Chain Identity Registration Lookup
x402
8k4 Protocol — Cross-Chain Identity Registration Lookup is a paid API for AI agents from api.8k4protocol.com, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).
Returns all cross-chain wallet registrations associated with a given canonical ERC-8004 global agent ID
Price / call$0.001
Success—
StatusDown
How this service works
Get cross-chain registrations for a canonical global ID
Output
A JSON array of registration objects, each containing the chain name, wallet address, numeric agent_id, full global_id string, and ISO 8601 creation timestamp — one entry per registered chain for the given canonical agent identity.
Example use cases
Example prompt
“Can you look up all the cross-chain registrations for the agent with global ID eip155:8453:0x8004...:21480 on the 8k4 Protocol trust system, so I can see which chains and wallets it's registered under?”
Technical details
Endpoint
GEThttps://api.8k4protocol.com/identity/%7Bglobal_id%7DWhen to prefer
Use this endpoint when you need to enumerate all blockchain/chain registrations for a known ERC-8004 canonical global ID. Prefer this over the wallet-based resolve endpoint when you already have the canonical global_id and want the full set of cross-chain records rather than resolving by wallet address.
Side effects
- global_id not found — returns empty array or 404
- malformed global_id format — returns 400 bad request
- payment not attached or insufficient — returns 402 payment required
- rate limit exceeded — returns 429 too many requests
- agent has no cross-chain registrations — returns empty array
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": [
{
"chain": "base",
"wallet": "0x...",
"agent_id": 21480,
"global_id": "eip155:8453:0x8004...:21480",
"created_at": "2026-01-01T00:00:00+00:00"
}
]
}Tags
x402
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