B76.3 / 100
Sentinel Contract Safety
Advertised description
(Provider-supplied: an unverified claim, not checked by us. The trust grade above is our independent measurement.)
Upgradeable contract and proxy admin check for any EVM contract on Base (GET ?contract=0x… or POST body {contract}). Reads EIP-1967 implementation, admin and beacon slots directly from chain state. Returns whether the…
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Upgradeable contract and proxy admin check for any EVM contract on Base (GET ?contract=0x… or POST body {contract}). Reads EIP-1967 implementation, admin and beacon slots directly from chain state. Returns whether the contract can be upgraded, who controls the upgrade, and an upgrade risk verdict. Call when an agent needs to know if a contract owner can silently change its logic. $0.02 USDC
30-day uptime
100.0%
Avg latency (EU)
2505 ms
slow · measured from a single EU vantage point; includes network round-trip distance to the endpoint; a geographically distant endpoint reads slower even when its server is fast, so it is only lightly weighted in the score
Confidence
1.00
full-density score
Advertised price
$0.02
USDC
Price stability
Stable
last 30 days
Probes (30d)
153
full record · up to 48/day
More details ▾
| Endpoint ID | 178169 |
| Pay on eip155:196 | 20000 units of 0xb6ce…3061 · to 0x5670…2e11 |
| Pay on Base | $0.02 USDC · to 0x5670…2e11 ↗ |
| First seen | 2026-10-02 |
| Last probed | 2026-10-29 |
| Status | listed |
| Snapshot computed | 2026-10-29 19:11 UTC (free snapshot, recomputed at least every 24h) |
Why this verdict?2 warnings
A wallet payment page opens first; approve the USDC payment and the full JSON report loads right in your browser. Want a taste first? Read a free full sample report.
This page is the free cached snapshot (computed 12 hours ago, refreshed at least every 24h). Here's what the paid API adds.
✓Live re-probe at decision time
The score is computed the moment you ask, not up to 24h ago.✓Instant snapshot refresh
Every paid call rewrites this page, the badge and the card immediately.✓The full “why”, machine-readable
Confidence band, component breakdown, every risk flag with its evidence.✓On-chain settlement proof
Real USDC volume and distinct payers behind the pay-to wallet.✓90-day raw history
Every listing, price and payTo change, every probe result.✓Ranked better alternatives
Higher-scored endpoints serving the same function, when they exist.✓Change & liveness alerts
PayTo/price moves, spec regressions, downtime; 5-minute probes while watched.
$
npx -y x402-trust-mcpGive your agents the tools to do all of this for you, with one install. Agents use the x402_trust_score MCP tool or POST /v1/x402-trust directly (pay-per-call over x402, from $0.005).