# Blockscout Address Reputation Lookup

> Blockscout Address Reputation Lookup is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.012/call, status unknown (last checked 2026-09-14).

Returns reputation/metadata scores for one or more blockchain addresses across multiple chains via Blockscout's metadata service

## Facts

- Endpoint: GET https://api.blockscout.com/services/metadata/api/v1/reputation
- Price: $0.012/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/blockscout-address-reputation-lookup-5d3f7e05
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_qygVY5zWurYre-oujHbc2

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 blockscout-address-reputation-lookup-5d3f7e05
```

Example prompt: Can you check the reputation of wallet address 0x742d35Cc6634C0532925a3b8D4C9C6d6c3f1e2b0 using Blockscout's metadata service before I interact with it?

## When to prefer this

Choose this endpoint when you need a quick reputation or risk signal for one or more blockchain addresses before performing transactions, whitelisting wallets, or due-diligence checks. It is particularly useful for cross-chain address screening since Blockscout indexes multiple networks. Prefer this over general blockchain explorers when you specifically need structured reputation metadata rather than raw transaction history.

## Known failure modes

- Invalid or malformed address string returns an error or empty result
- Address not found in Blockscout's metadata database returns empty scores
- Rate limiting or payment failure (x402) blocks the request
- Unsupported chain addresses may return no reputation data
- Network timeout if Blockscout metadata service is unavailable

## How this service works

Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data

## Output

A JSON object keyed by address containing reputation metadata and scoring signals for each queried blockchain address, indicating trust level or risk flags associated with each address.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "addresses": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "addresses": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/blockscout-address-reputation-lookup-5d3f7e05/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.blockscout.com](https://www.zero.xyz/host/api.blockscout.com/llms.txt)