payment-ready until 2026-08-20
Pre-interaction risk signals for any EVM contract/token address. USDC on Base via x402.
Pay from $0.005 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.
first settlement 2026-07-14 · $4.25 all-time · settled via coinbase, dexter
ASSESSMENT
updated 4h agoEvidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.
reliability 99.7%
- uptime 24h
- 100%
- uptime 7d
- 100%
- uptime 30d
- 99.7%
- uptime 90d
- 99.7%
- response p95
- 1416ms
- avg response
- 588ms
- total checks
- 2,668
Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.
compliance A (14/14)
14 of 14 x402 conformance checks pass. Full checklist below.
price $0.005 (p47 in Blockchain)
- price (min)
- $0.005
- category percentile (min)
- p47 in Blockchain
- endpoints / prices
- 1 / 1
- model
- flat
- stability
- 100%
risk clean
No deterministic risk flag. Risk fires only on an exact blocklist match, or a reserved-brand name with a mismatched verified payTo. Never from low uptime, a high price, or a model guess.
- domain age
- 1744d
- registrar
- OVH sas
- hosting
- custom
- domain created
- 2021-11-01
Identity facts, not a risk score.
traction $4.215 30d · 13 buyers
- volume 30d
- $4.215
- buyers 30d
- 13
- settlements 30d
- 329
- first settlement
- 2026-07-14
- last settlement
- 2026-08-13
- top buyer share
- 76% of 30d volume
- trend 7d vs 30d
- 0.04x the 30d daily rate
- networks
- eip155:8453
- volume all-time
- $4.25
- settlements all-time
- 329
- median settlement 30d
- $0.005
- max settlement 30d
- $1.00
- settled via
- coinbase ($4.21, 328 tx), dexter ($0.005, 1 tx)
Conservative undercount: only USDC settlements via facilitators we measure are counted. A measured floor, not an estimate.
Top buyer share is a concentration signal, not part of the ranking score.
WHAT IT DOES
ai-derivedNo AI synthesis has been produced for this service yet.
ENDPOINTS
| METHOD | PATH | DESCRIPTION | PRICE | NETWORK | ASSET | 402 CHANNEL |
|---|---|---|---|---|---|---|
| POST | /check | $0.005 | Base | USDC | header |
REQUEST / RESPONSE EXAMPLE
An unpaid request to POST /check returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.
curl -i -X POST 'https://eltociear-contract-guard.hf.space/check'
// 402 response (captured by monitor) · 1 payload · click to expand
[
{
"error": "Payment required",
"accepts": [
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"payTo": "0x5bCDA55247B238a573A968B234F788a2D35664Dd",
"amount": "5000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 300
}
],
"resource": {
"url": "https://eltociear-contract-guard.hf.space/check",
"mimeType": "application/json",
"description": "Risk check for an EVM contract/token address"
},
"extensions": {
"bazaar": {
"info": {
"input": {
"body": {
"chain": "base",
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
},
"type": "http",
"method": "POST",
"bodyType": "json"
},
"output": {
"type": "json",
"example": {
"chain": "base",
"flags": [
"..."
],
"token": {
"name": "USD Coin",
"symbol": "USDC",
"decimals": 6
},
"address": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"is_proxy": true,
"risk_level": "HIGH",
"risk_score": 40,
"is_contract": true
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method",
"bodyType",
"body"
],
"properties": {
"body": {
"required": [
"address"
],
"properties": {
"chain": {
"enum": [
"base",
"ethereum"
],
"type": "string",
"description": "Chain (default base)"
},
"address": {
"type": "string",
"description": "EVM contract/token address (0x...)"
}
}
},
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string"
},
"example": {
"type": "object"
}
}
}
}
}
}
},
"x402Version": 2
}
] OVER TIME
All charts use the 90d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/contract-guard-api/price, /scores, /volume and /buyers. On-chain volume and distinct buyers are measured over the service's settlement address and are a conservative undercount (only settlements that reach a measured facilitator are counted). The on-chain series roll up hourly, so the latest day can be up to about an hour behind; distinct buyers are counted per payout address, so a service that settles to more than one address is an upper bound.
checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression
Measured site and economics pillars from the assessment history, so the latest value shown elsewhere on this page reads as a point on a trend rather than a permanent state.
COMPLIANCE
14/14 checks pass · grade Alast 402 captured 2026-07-14 · last up 2026-08-13
- 402 payload captured
- accepts[] array present
- payTo address recoverable
- payTo at accepts[0].payTo (conformant shape)
- payTo is a valid on-chain address
- atomic price declared
- atomic price in a sane range
- asset (token) address declared
- network resolves to CAIP-2
- payment scheme declared
- served over HTTPS
- declares the current x402 version (2)
- EIP-712 domain parameters present on every EVM entry
- x402 v2 envelope delivered in the payment-required header
SITE PILLARS
- homepage reachable
- openapi doc
- pricing page
- llms.txt
- robots.txt
- terms page
recent checks (18) live · click to expand
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