ChainRead Gas Risk Checker

x402

ChainRead Gas Risk Checker is a paid API for AI agents from api.firstmention.uk, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-29).

Analyzes an EVM address or transaction on Base or Ethereum and returns a risk score, verdict, and flags for gas-related or ownership risk signals.

Price / call$0.01

Seller volume →—

Success—

StatusUnknown

How this service works

Pay-per-call HTTP APIs, paid with x402 in USDC on Base (eip155:8453): agentkit, api-change-check, basedue, basewatch, chainread, check-sanctions, chgwatch, company-facts, composite, edgar, feednews, pageaudit, solcheck, token-dd, txpreflight, walletcheck, webmd, webread, websearch, x402index. Each operation describes its service.

Output

Returns a JSON object containing: the analyzed address, the chain it was checked on, a numeric risk score (0–100), a categorical verdict (e.g. SAFE, CAUTION, HIGH), a list of risk flags each with a code and severity, and _meta fields including the caller's payer address and price paid in USD.

Example use cases

Pre-interaction DeFi contract vetting

“Before I swap tokens on this Base contract 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913, can you check its risk score and tell me if the owner holds too much power or if there are any high-severity flags I should know about?”

Token contract due diligence

“I'm looking at an ERC-20 token on Ethereum at address 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 — can you score its risk level and tell me the verdict, like SAFE, CAUTION, or HIGH RISK?”

Wallet address sanity check before sending funds

“I need to send USDC to 0x4838B106FCe9647Bdf1E7877BF73cE8B0BAD5f97 on Base — can you quickly check whether this address has any risk flags or a bad risk score before I proceed?”

Technical details

Endpoint

POSThttps://api.firstmention.uk/s/chainread/gas?utm_source=zero.xyz

When to prefer

Choose this endpoint when you need a quick, pay-per-call risk verdict on a specific EVM address or contract on Base or Ethereum without setting up your own on-chain analytics pipeline. It is especially useful for AI agents doing pre-transaction due diligence, DeFi interaction vetting, or token contract screening. Prefer this over general blockchain explorers when you need a structured risk score and flag taxonomy rather than raw transaction data.

Side effects

Invalid or malformed 0x address returns an error response
Unsupported chain value (not 'base' or 'ethereum') causes a validation error
Payment failure via x402/USDC results in 402 Payment Required with no data returned
Address with no on-chain history may return minimal flags or low-confidence score
Rate limiting or network issues with the upstream RPC may cause timeouts

Input

Schema · Request body

Field	Type	Description
hash	string	0x transaction hash (for /tx)
chain	string
number	string	Block number or 'latest' (for /block)
address	string	0x address or ERC-20 contract address
addresses	array	Up to 25 addresses (for /batch)

Output

Schema · Response

{
  "type": "json",
  "example": {
    "risk": "medium",
    "_meta": {
      "payer": "0x...",
      "price_usd": 0.01
    },
    "chain": "base",
    "flags": [
      {
        "code": "owner_holds_power",
        "severity": "high"
      }
    ],
    "score": 45,
    "address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "verdict": "CAUTION"
  }
}

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