# Base Token Verdict

> Base Token Verdict is a paid API for AI agents from api.arysphere.com, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-17).

Returns an AI-written verdict (grade, one-liner, roast) on a Base ERC-20 token contract address, based on on-chain contract facts only.

## Facts

- Endpoint: GET https://api.arysphere.com/v1/ventures/x402_bazaar_token_verdict_v2/base_token_verdict_v3?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-17
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-token-verdict-fd88a17a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_SMuVpFV8btsQUU8WEPdLN

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 base-token-verdict-fd88a17a
```

Example prompt: Can you get a verdict on the Base token at 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 — I want to see if it's BASED, MID, COOKED, or RADIOACTIVE, plus the roast and any proxy or ownership flags.

## When to prefer this

Use this endpoint when you need a fast, entertaining, AI-written qualitative verdict on a Base ERC-20 token contract based purely on its on-chain code and state — specifically for proxy detection, ownership status, and contract structure. Prefer this over raw balance or ABI endpoints when you want a human-readable grade and roast rather than raw numbers. Do NOT use this for price, liquidity, holder distribution, or safety guarantees — it reads contract code only.

## Known failure modes

- Invalid or malformed token address (not matching 0x + 40 hex) returns validation error
- Address is not a contract (is_contract: false) — verdict may still return but with limited facts
- Non-ERC-20 contract at address may result in erc20_shaped: false and incomplete fact extraction
- Network or RPC errors on Base may cause lookup failures
- Rate limiting or payment failure (x402) if USDC balance is insufficient

## How this service works

ARYSPHERE sells AI-written verdicts on Base token contracts (a grade, a one-liner, a roast and the contract's facts) and Base/Ethereum chain reads, paid per call in USDC on Base over x402 v2. No account and no API key.

## Output

A JSON object containing: ok status, chain (base), cache status, and a result object with: grade (BASED/MID/COOKED/RADIOACTIVE), one_liner summary, roast string, the token contract address, a disclaimer, and a facts object with code size, name, symbol, decimals, supply, owner address, proxy_slot type, is_contract, erc20_shaped, owner_renounced, and upgradeable_proxy flags.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "token": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "token contract, 0x + 40 hex"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "chain": "base",
  "grade": "COOKED",
  "cached": false,
  "method": "verdict",
  "result": {
   "facts": {
    "name": "USD Coin",
    "owner": "0x3abd6f64a422225e61e435bae41db12096106df7",
    "symbol": "USDC",
    "decimals": 6,
    "proxy_slot": "zeppelinos",
    "is_contract": true,
    "erc20_shaped": true,
    "owner_renounced": false,
    "upgradeable_proxy": true
   },
   "grade": "COOKED",
   "roast": "USDC: COOKED. Proxy (zeppelinos slot set); a live owner holds the keys.",
   "token": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
   "market": {
    "dex": "uniswap_v3",
    "eth_usd": 2432.8015,
    "fee_tiers": [
     500,
     3000,
     10000
    ],
    "price_usd": 1.00209,
    "rpc_calls": 2,
    "depth_rule": "pool_depth from the deepest pool's quote-side reserve in USD: <$1k none_or_dust, <$100k thin, <$5M moderate, else deep. A description of on-chain state, not advice.",
    "pool_depth": "deep",
    "pools_found": 3,
    "deepest_pool": {
     "fee": 3000,
     "pool": "0x6c561b446416e1a00e8e93e221854d6ea4171372",
     "quote": "WETH",
     "price_usd": 1.00209,
     "token_reserve": 58770808.350535,
     "quote_reserve_usd": 87721037.3
    },
    "quote_assets": [
     "WETH",
     "USDC"
    ],
    "eth_usd_source": "chainlink ETH/USD 0x71041dddad3595f9ced3dccfbe3d1f4b0a16bb70",
    "quote_reserve_usd": 87721037.3
   },
   "one_liner": "USDC is COOKED",
   "disclaimer": "Entertainment, not financial advice. Reads the contract and its deepest Uniswap V3 pool (spot price, quote-side depth): not holders, locks or future price.",
   "grade_rule": "RADIOACTIVE: not a contract, or not ERC-20 shaped (no decimals/totalSupply). COOKED: a proxy implementation slot is set (EIP-1967, its beacon, or ZeppelinOS) AND owner() names a live owner. MID: either one. BASED: neither found.",
   "written_by": "template"
  },
  "service": "x402_bazaar_token_verdict_v2.base_token_verdict_v3",
  "disclaimer": "Entertainment, not financial advice. Reads the contract and its deepest Uniswap V3 pool (spot price, quote-side depth): not holders, locks or future price."
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-token-verdict-fd88a17a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.arysphere.com](https://www.zero.xyz/host/api.arysphere.com/llms.txt)