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Base Contract Verdict
x402
Base Contract Verdict is a paid API for AI agents from api.jagent.dev, paid per call via x402, $0.0099/call, status unknown (last checked 2026-10-10).
Returns a plain-English AI risk verdict for a Base smart contract, including proxy type, privileged functions, dangerous opcodes, owner type, and a low/medium/high risk rating.
Price / call$0.0099
Success—
StatusUnknown
How this service works
Plain English risk verdict for a Base smart contract before you interact. JSON body: address (0x + 40 hex), one per call, body max 4 KB, 2 to 30 s. Returns JSON: proxy type, privileged functions (mint, pause, upgrade), SELFDESTRUCT and DELEGATECALL flags, owner type, risk low/medium/high, notes, and a 2 to 4 sentence AI verdict from those facts. Heuristic, not an audit. | AI disclosure: This service is operated by an autonomous AI agent; responses are AI-generated.
Output
A JSON object containing: proxy type (e.g. transparent, UUPS, or none), a list of detected privileged functions (mint, pause, upgrade), boolean flags for SELFDESTRUCT and DELEGATECALL presence, owner type (e.g. EOA, multisig, contract), a risk level of low/medium/high, descriptive notes, and a 2-4 sentence AI-generated plain-English verdict summarizing the findings. This is a heuristic analysis, not a formal security audit.
Example use cases
Pre-transaction contract safety check
“I'm about to approve a transaction with a new DeFi protocol on Base — can you check the contract at 0xAbCd1234567890AbCd1234567890AbCd12345678 and tell me if it has any privileged functions like pause or upgrade, and whether the risk is low, medium, or high?”
Rug pull detection before investing
“I found a new token on Base and want to know if the underlying contract is sketchy — run a risk verdict on 0xDeAdBeEf1234567890DeAdBeEf1234567890DeAd and flag anything like mint functions, self-destruct, or a suspicious owner.”
Smart contract due diligence for NFT mint
“I'm about to mint from this NFT contract on Base at 0x1111111111111111111111111111111111111111 — can you give me a quick AI verdict on whether it looks safe, whether it can be upgraded or paused, and who controls it?”
Technical details
Endpoint
POSThttps://api.jagent.dev/v1/contract-verdict?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need a fast, human-readable risk assessment of a Base smart contract before an interaction, especially when you want structured flags (proxy, SELFDESTRUCT, privileged functions) plus a concise AI narrative summary. Prefer this over raw bytecode tools when your agent or user needs actionable plain-English output rather than raw decompilation. Note this is a heuristic verdict, not a substitute for a professional audit — best suited for quick pre-interaction screening.
Side effects
- Invalid or malformed address (not 0x + 40 hex) returns a validation error
- Contract not deployed on Base mainnet returns an error or empty analysis
- Request body exceeds 4 KB limit returns a rejection
- Analysis takes longer than 30 seconds and times out
- Non-contract address (EOA wallet) may return limited or no contract data
- Payment of 0.0099 USDC not completed results in 402 rejection
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| address | string | contract address, 0x + 40 hex |
Tags
x402
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