# 8k4 Protocol — Wallet Score Lookup

> 8k4 Protocol — Wallet Score 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).

Resolve agent identity records and ERC-8004 trust scores associated with a given blockchain wallet address

## Facts

- Endpoint: GET https://api.8k4protocol.com/wallet/%7Bwallet%7D/score
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/8k4-protocol-wallet-score-lookup-5e975273
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_lymXtLF0yUJ3z8DkEutEF

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability 8k4-protocol-wallet-score-lookup-5e975273
```

Example prompt: What is the ERC-8004 trust score and agent ID for wallet 0x4f3a...b92c on Base — I want to verify whether this agent is registered and what its trust profile looks like.

## When to prefer this

Use this endpoint when you have a wallet address and need to resolve it to an agent identity or ERC-8004 trust score. Prefer this over the agent-ID-based score endpoint when the only identifier available is a wallet address, not an agent_id or canonical global ID.

## Known failure modes

- Wallet not found — no agent registration exists for the given address
- Invalid wallet address format — malformed 0x address returns an error
- Chain not supported — wallet queried on unsupported network
- Rate limiting or payment failure — x402 micropayment not processed
- Empty result set — wallet exists on-chain but has no ERC-8004 metadata

## How this service works

Resolve agent identities and scores by wallet

## Output

Returns a JSON array with chain name, wallet address, agent_id, and created_at timestamp — identifying the agent registration(s) associated with that wallet and their ERC-8004 trust scores.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": [
  {
   "chain": "base",
   "wallet": "0x...",
   "agent_id": 21480,
   "created_at": "2026-01-01T00:00:00+00:00"
  }
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/8k4-protocol-wallet-score-lookup-5e975273/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.8k4protocol.com](https://www.zero.xyz/host/api.8k4protocol.com/llms.txt)