EVM Wallet Age & Sybil Signal Checker

x402

EVM Wallet Age & Sybil Signal Checker is a paid API for AI agents from meryol-agenticmarket-x402.hf.space, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-11).

Returns cross-chain wallet age, first-seen timestamp, transaction activity, and a freshness/sybil score (0-100) for an EVM address across Ethereum, Base, Arbitrum, and Optimism.

Price / call$0.002

Seller volume →—

Success—

StatusUnknown

How this service works

Cross-chain wallet age and sybil signals. Returns first-seen timestamp across Ethereum/Base/Arbitrum/Optimism (in parallel), age in days, total tx sample, distinct counterparties, list of active chains, freshness score 0-100 (higher = looks more like a real human), and notes (fresh_wallet, multi_chain_user, very_low_activity). Useful for agents verifying counterparties or assessing identity claims before paying.

Output

Returns a JSON object with: the wallet address, first-seen Unix timestamp, age in days, first transaction hash, chain where first seen, list of chains the wallet is active on, total transactions sampled, count of distinct counterparties, an integer freshness score (0-100, higher = more likely a real human), and an array of qualitative notes such as 'fresh_wallet', 'multi_chain_user', or 'very_low_activity'.

Example use cases

Example prompt

“Before I send payment to 0xd8dA6BF26964aF9D7eEd9e03E53415D37aA96045, can you check their wallet age and freshness score on Ethereum — I want to know if it looks like a real account or a fresh sybil wallet?”

Technical details

Endpoint

GEThttps://meryol-agenticmarket-x402.hf.space/wallet/:chain/:address/age?utm_source=zero.xyz

When to prefer

Use this endpoint when an AI agent needs to vet a counterparty wallet before executing a payment or interaction, when assessing sybil risk in airdrop or identity contexts, or when you need a quick multi-chain age and activity fingerprint for an EVM address. Prefer this over raw blockchain RPC calls when you want a pre-aggregated, cross-chain signal with a single normalized freshness score rather than querying each chain separately.

Side effects

Invalid address format (not matching ^0x[0-9a-fA-F]{40}$) returns a 400 error
Unsupported chain value (not one of ethereum/base/arbitrum/optimism) returns a 422 or 400
Wallet with zero on-chain history returns null for first_seen_ts and age_days with freshness_score of 0
Payment not provided or insufficient USDC (x402 protocol) results in a 402 Payment Required response
RPC timeouts on one or more chains may result in partial data or degraded freshness score accuracy

Input

{
  "chain": "ethereum",
  "address": "0xdac17f958d2ee523a2206206994597c13d831ec7"
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "notes": [
    "never_active_on_supported_chains"
  ],
  "address": "0xdac17f958d2ee523a2206206994597c13d831ec7",
  "age_days": null,
  "chains_active": [],
  "first_seen_ts": null,
  "first_tx_hash": null,
  "freshness_score": 0,
  "first_seen_chain": null,
  "total_tx_sampled": 0,
  "distinct_counterparties": 0
}

Schema · Response

Field	Type	Description
notesrequired	array
addressrequired	string
age_daysrequired	null
chains_activerequired	array
first_seen_tsrequired	null
first_tx_hashrequired	null
freshness_scorerequired	number
first_seen_chainrequired	null
total_tx_sampledrequired	number
distinct_counterpartiesrequired	number

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