# Base Intel API — Token Safety Check

> Base Intel API — Token Safety Check is a paid API for AI agents from base-intel-api.jakemaxsigal.workers.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-09).

Returns an ALLOW/WARN/BLOCK risk decision for a Base network token contract, combining on-chain safety signals, DEX liquidity data, and activity heuristics into a single graded response.

## Facts

- Endpoint: GET https://base-intel-api.jakemaxsigal.workers.dev/token/check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-09
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/base-intel-api-token-safety-check-e7e82b3b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2EWEGlL2cBk387TlQ8Dkv

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-intel-api-token-safety-check-e7e82b3b
```

Example prompt: Before swapping into this token, run a safety check on Base contract address 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 and tell me whether it's safe to trade — I want the risk level, safety score, and any red flags like upgradeable proxies or unrenounced ownership.

## When to prefer this

Use this endpoint when an AI agent or DeFi bot needs a single-call, structured risk verdict before executing a token swap or DeFi interaction on Base. It is ideal when you want a combined signal — contract safety, upgradeability, ownership, and DEX liquidity — rather than querying separate data sources. Prefer this over general blockchain explorers when you need a machine-readable ALLOW/WARN/BLOCK style decision at low cost ($0.01 USDC per call) without building your own risk heuristics. Best suited for autonomous agents, trading bots, and portfolio screeners operating on the Base L2 network specifically.

## Known failure modes

- Invalid or non-existent contract address returns an error or empty result
- Non-Base chain addresses may be misidentified or return no data
- Upgradeable proxies may receive a lower safety score even if the token is legitimate (e.g. USDC)
- Rate limiting or payment failure via x402 may block the request
- On-chain data lag may cause stale results for very recently deployed contracts
- Network timeouts from DEX liquidity lookups may delay or fail the response

## How this service works

One-call ALLOW, WARN, or BLOCK trade-risk decisions for Base agents, combining contract safety with live DEX liquidity and activity. Paid per result in USDC over x402.

## Output

A JSON object containing the token's name, symbol, decimals, total supply, contract address, a numeric safety score (0–100), a letter grade (e.g. A–F), a risk level string (low/medium/high), a list of human-readable risk flags (e.g. 'Upgradeable proxy'), boolean fields for isContract, isUpgradeableProxy, and ownershipRenounced, a timestamp, and a disclaimer note. Paid per call via x402 at $0.01 USDC.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "address"
     ],
     "properties": {
      "address": {
       "type": "string",
       "description": "The Base token contract address to check, e.g. 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913."
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "name": {
       "type": "string"
      },
      "note": {
       "type": "string"
      },
      "flags": {
       "type": "array",
       "items": {
        "type": "string"
       }
      },
      "grade": {
       "type": "string"
      },
      "symbol": {
       "type": "string"
      },
      "address": {
       "type": "string"
      },
      "decimals": {
       "type": "number"
      },
      "riskLevel": {
       "type": "string"
      },
      "timestamp": {
       "type": "string"
      },
      "isContract": {
       "type": "boolean"
      },
      "safetyScore": {
       "type": "number"
      },
      "totalSupply": {
       "type": "string"
      },
      "isUpgradeableProxy": {
       "type": "boolean"
      },
      "ownershipRenounced": {
       "type": "boolean"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "name": "USD Coin",
  "note": "Heuristic on-chain safety signals, not financial advice.",
  "flags": [
   "Upgradeable proxy — the owner can change the token's code after launch."
  ],
  "grade": "C",
  "symbol": "USDC",
  "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "decimals": 6,
  "riskLevel": "medium",
  "timestamp": "2026-06-05T00:00:00.000Z",
  "isContract": true,
  "safetyScore": 55,
  "totalSupply": "1000000000.0",
  "isUpgradeableProxy": true,
  "ownershipRenounced": false
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/base-intel-api-token-safety-check-e7e82b3b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from base-intel-api.jakemaxsigal.workers.dev](https://www.zero.xyz/host/base-intel-api.jakemaxsigal.workers.dev/llms.txt)