agent402.tools/api/attest

avoid grade B Attest a settled call on Base Base Polygon Arbitrum eip155:143 Avalanche eip155:1329 eip155:10 eip155:4663 eip155:42220 found on x402scan found on CDP Bazaar confidence 0.48
https://agent402.tools/api/attest

As of 2026-09-14, agent402.tools/api/attest on Base responded to 92.9% of 14 reliability checks since first seen 2026-09-03 (11 days), often enough to use but with outages frequent enough to plan around. Responses came back sluggish at 815 ms average from a single EU vantage point (so this includes network distance to the endpoint) and its advertised price moved 1 time (now $0.0500). Its x402-trust grade is B (score 74.3 from a moderate sample, tracked for 11 days), so it is best avoided for now.

Why this verdict?

The latest analysis recorded 1 error flag and 2 warnings for this endpoint.

This page is a cached snapshot (computed 1 hour ago, refreshed at least every 24h): it tells you what the verdict is, not why. What each flag says, which wallet or network it concerns and the evidence behind it is the paid trust report, re-probed live at the moment you ask.

A wallet payment page opens first; approve the USDC payment and the full JSON report loads right in your browser. Agents use the x402_trust_score MCP tool or POST /v1/x402-trust directly. Want a taste first? Read a free full sample report.

Advertised descriptionWrite an on-chain attestation (Ethereum Attestation Service on Base) that binds a call you paid for to the bytes you received: the tool slug, sha256 of the JSON response, the settlement chain and transaction, the payer, the time served and the price, signed by this server's wallet. Give it the settlement transaction from the PAYMENT-RESPONSE (or Payment-Receipt) header of any settled call; the attestation UID and its public page on base.easscan.org come back.(Provider-supplied: an unverified claim, not checked by us. The trust grade above is our independent measurement.)
30-day uptime
92.9%
Avg latency (EU)
815 ms
slow · from EU vantage
Confidence
0.48
full-density score
Advertised price
$0.05
USDC
Price stability
1 change
last 30 days
Probes (30d)
14
full record · up to 48/day

Latency is 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.

↑ 10 better alternatives available

10 better-scored (some cheaper) endpoints serving a semantically similar purpose exist.

We don't reveal which ones here. The ranked list (resource URLs, exact scores, prices & similarity, etc...) is one paid call away. Purchase it right here with a browser wallet, no code required:

A wallet payment page opens first; approve the USDC payment and the ranked JSON list loads right in your browser. Agents use the x402_find_alternatives MCP tool or POST /v1/similar directly.

Full observation record ▾
Trust gradeB (score 74.3)
Recommendationavoid
Confidence0.48, full-density (every probe in the 30-day window)
30-day uptime92.9%
Avg latency (EU vantage)815 ms
Probes (30d)14
Advertised price$0.05 USDC
Price stability (30d)1 change(s)
Pay on Base$0.05 USDC · to 0xaBF4…a9D0 ↗
Pay on Polygon50000 units of 0x3c49…3359 · to 0xaBF4…a9D0 ↗
Pay on Arbitrum50000 units of 0xaf88…5831 · to 0xaBF4…a9D0
Pay on eip155:14350000 units of 0x7547…b603 · to 0xaBF4…a9D0
Pay on Avalanche50000 units of 0xB97E…8a6E · to 0xaBF4…a9D0
Pay on eip155:132950000 units of 0xe15f…2392 · to 0xaBF4…a9D0
Pay on eip155:1051000 units of 0x0b2C…Ff85 · to 0xaBF4…a9D0
Pay on eip155:466350000 units of 0x5fc5…d168 · to 0xaBF4…a9D0
Pay on eip155:4222050000 units of 0xcebA…118C · to 0xaBF4…a9D0
First seen2026-09-03
Last probed2026-09-14
Statuslisted
Snapshot computed2026-09-14 19:55 UTC
This is the free cached snapshot. Here's what the paid API adds.
  • ✓
    Live probe at decision time:
    We re-check the endpoint the moment you ask (timestamped) and compute the score from all scores up until this moment, instead of this cached snapshot that may be up to 24h old.
  • ✓
    Instant snapshot refresh:
    Every paid call also re-writes this cached snapshot, so the page, badge and card update immediately instead of waiting for the 24h cycle.
  • ✓
    Confidence band, full component breakdown & structured risk flags:
    Exactly why the score is what it is, machine-readable.
  • ✓
    On-chain settlement proof:
    Real USDC volume & distinct-payer count for the payTo wallet: is anyone actually paying it?
  • ✓
    90-day raw history:
    Every listing/price/payTo change and probe result (via POST /v1/x402-history), up to 90 days back.
  • ✓
    The ranked better-scored alternatives:
    The resource URLs, scores & prices we don't reveal above (via POST /v1/similar), if there are better alternatives available.
  • ✓
    Change & liveness alerts:
    Get notified on payTo/price changes, spec regressions or downtime (via POST /v1/watch-endpoint-30d). Connect up to 10 Discord / Slack webhooks or poll regularly with bearer auth. Increases probe-density to every 5 minutes instead of the usual 30 for the watched endpoint.

... Simply give your agents the tools to do all of that for you, with a simple command
$npx -y x402-trust-mcp

Prefer HTTP? Call POST /v1/x402-trust directly (pay-per-call over x402, from $0.005).