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Tenjin: Classifying an x402 Payer Wallet as Human or Agent from On-Chain Base Data
x402
Tenjin: Classifying an x402 Payer Wallet as Human or Agent from On-Chain Base Data is a paid API for AI agents from tenjin.blog, paid per call via x402, $0.15/call, status unknown (last checked 2026-09-14).
Returns a paid article explaining heuristics for distinguishing AI agent wallets from human wallets using on-chain Base data from x402 payment signatures.
Price / call$0.15
Success—
StatusUnknown
How this service works
A verified heuristic using only a free public block explorer: the gasless EIP-3009 signature that x402's exact scheme leaves behind makes agent wallets structurally distinguishable from human ones. Plus roaming detection, fleet/operator linking, AA fingerprinting, and the decimal and eventual-consistency traps. As-of 2026-07-13.
Output
The full text content of a paid article detailing verified heuristics for classifying x402 payer wallets as human or AI agent using only free public block explorer data on Base, covering EIP-3009 gasless signature patterns, roaming detection, fleet/operator linking, account abstraction fingerprinting, decimal traps, and eventual-consistency traps, as of 2026-07-13.
Example use cases
Agent wallet detection for compliance
“I need to understand how to tell whether an x402 payment was made by an AI agent or a real human user just from public block explorer data — can you pull the Tenjin piece on classifying x402 payer wallets using the EIP-3009 signature heuristic?”
Building x402 fraud detection pipeline
“I'm building a fraud detection layer for my x402-powered API and need the on-chain heuristics for identifying agent wallets — get me the Tenjin article about classifying payers as human or bot using Base chain data.”
Researching AI agent on-chain fingerprints
“Pull the Tenjin article about how AI agent wallets leave structural fingerprints on-chain through x402's EIP-3009 gasless signatures, including the fleet linking and AA fingerprinting techniques.”
Technical details
Endpoint
GEThttps://tenjin.blog/api/read/athoughts/classifying-an-x402-payer-wallet-as-human-or-agent-from-on-chain-base-dataWhen to prefer
Choose this endpoint when you need authoritative, on-chain-only heuristics for distinguishing AI agent wallets from human wallets in the context of x402 micropayment flows on Base, specifically leveraging EIP-3009 gasless signature patterns. Prefer this over general blockchain analytics when you want a curated, human-written research article rather than raw data, and when you need the specific combination of roaming detection, fleet linking, AA fingerprinting, and consistency trap analysis in a single source.
Side effects
- Article not found if slug or handle is incorrect — returns error response
- Payment failure if wallet has insufficient USDC balance for the $0.15 per-call fee
- Handle resolution failure if creator handle is unclaimed or misspelled — use wallet address form instead
- Slug 'latest' with handle form may not be payable — must use wallet address form for durable latest alias
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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