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WalCert Activity Certificate — 15-Day Wallet Behavior Grader
x402
WalCert Activity Certificate — 15-Day Wallet Behavior Grader is a paid API for AI agents from walcert.globalscoreagent.com, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).
Grades a wallet's 15-day on-chain activity (counterparties, concentration, velocity, bot-like behavior) on an A–F scale and returns a signed certificate for $0.05 USDC.
Price / call$0.05
Success—
StatusUnknown
How this service works
Grade 15-day wallet activity (counterparties, HHI, velocity, bot-like) A-F before you transact. POST wallet_address; signed certificate. $0.05 USDC.
Output
A signed certificate containing an A–F activity grade for the wallet's last 15 days of on-chain behavior, with sub-scores covering counterparty diversity (HHI), transaction velocity, bot-likelihood signals, and an overall activity quality assessment. The certificate is cryptographically signed for downstream verification.
Example use cases
Pre-payment counterparty vetting
“I'm about to pay 0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B for freelance work — can you grade their wallet activity for the past 15 days and tell me if anything looks bot-like or suspicious before I send funds?”
DeFi protocol partner screening
“We're onboarding a new liquidity provider at 0x1f9090aaE28b8a3dCeaDf281B0F12828e676c326 — run an activity certificate on them so I can see their counterparty diversity and transaction velocity grade before we approve them.”
ERC-8004 agent wallet pre-hire check
“Before I delegate tasks to the agent at wallet 0xde0B295669a9FD93d5F28D9Ec85E40f4cb697BAe, can you pull its 15-day activity grade and flag if the HHI concentration or velocity looks automated or bot-driven?”
Technical details
Endpoint
POSThttps://walcert.globalscoreagent.com/v1/certificates/activityWhen to prefer
Choose this endpoint when you specifically need to evaluate a wallet's recent behavioral patterns — transaction velocity, counterparty concentration (HHI), and bot-like activity — over a 15-day rolling window, and you want a signed certificate as proof. Prefer this over general wallet footprint or portfolio graders when the concern is behavioral risk (bots, wash trading, velocity abuse) rather than asset quality or wallet age/longevity.
Side effects
- Invalid or malformed wallet address (not 0x-prefixed or not 42 chars) — returns validation error
- Wallet address has no on-chain activity in the 15-day window — may return insufficient data error or lowest grade
- Payment of $0.05 USDC not received or x402 protocol failure — request rejected before processing
- Upstream chain RPC timeout or data unavailability — returns 503 or partial result
- Rate limiting if many certificates are requested in rapid succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| wallet_address | string | EVM wallet address (0x-prefixed, 42 chars) |
Tags
x402
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