# VoltPlayground Sybil Score API

> VoltPlayground Sybil Score API is a paid API for AI agents from voltplayground.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Returns a sybil risk score (0–100) and trust label for an EVM wallet address on the Base network

## Facts

- Endpoint: GET https://voltplayground.xyz/api/v1/sybil-score
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/voltplayground-sybil-score-api-bfbf580f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7Mwc5Hwfv1ZC7jy1-6fPC

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 voltplayground-sybil-score-api-bfbf580f
```

Example prompt: Can you check the sybil score for the wallet 0x136d289c9c586d7c7fd3a39635a4877796845312 on Base and tell me if it's trusted?

## When to prefer this

Choose this endpoint when you need a fast, on-chain sybil risk score for an EVM wallet on the Base network — especially useful for airdrop screening, DAO voting integrity, DeFi onboarding, or any context where distinguishing real users from bot/sybil wallets matters. Prefer this over generic wallet analytics APIs when you specifically need a normalized 0–100 trust score with a label, and when your target chain is Base.

## Known failure modes

- Invalid or malformed wallet address (not matching 0x + 40 hex chars) returns an error
- Unsupported network (only BASE is currently supported) may return an error or default to BASE
- Wallet with no on-chain history may return a low score or incomplete data
- Payment failure (x402 protocol) prevents the call from completing
- Rate limiting or quota exhaustion returns a 429 error

## How this service works

Deploy smart contracts across multiple EVM networks with VoltPlayground's fast, retro-inspired terminal and launch dashboard.

## Output

A JSON object containing the wallet address, a numeric totalScore between 0 and 100 (higher = more trusted), a human-readable label (e.g. 'TRUSTED'), the network identifier (e.g. 'eip155:8453' for Base), and a calculatedAt timestamp. May also include internal metadata fields like _tx and _network.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input",
  "output"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "queryParams"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "pattern": "^0x[a-fA-F0-9]{40}$",
       "description": "EVM wallet address."
      },
      "network": {
       "enum": [
        "BASE"
       ],
       "type": "string",
       "default": "BASE"
      }
     },
     "additionalProperties": false
    },
    "discoverable": {
     "type": "boolean"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "address",
      "totalScore"
     ],
     "properties": {
      "_tx": {
       "type": "string"
      },
      "label": {
       "type": "string"
      },
      "address": {
       "type": "string"
      },
      "_network": {
       "type": "string"
      },
      "totalScore": {
       "type": "number",
       "maximum": 100,
       "minimum": 0
      },
      "calculatedAt": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  }
 },
 "additionalProperties": false
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "label": "TRUSTED",
  "address": "0x136d289c9c586d7c7fd3a39635a4877796845312",
  "_network": "eip155:8453",
  "totalScore": 69
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/voltplayground-sybil-score-api-bfbf580f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from voltplayground.xyz](https://www.zero.xyz/host/voltplayground.xyz/llms.txt)