x402 List

x402 Protocol Service Directory

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SYNTHORA Agent Pre-Trade Safety

Verification imported

payment-ready 2026-08-04, probe currently failing

imported from the x402 Bazaar, not submitted by the operator · own this service? claim it · or ask to be removed

Returns a pre-trade risk verdict (SAFE, CAUTION or BLOCK) for an EVM address in one call, combining sanctions screening, stablecoin peg deviation in bps and a counterparty on-chain signal into an Ed25519-signed attestation. Scoring only, it never moves funds.

Pay from $0.20 per request in USDC on Base, settled onchain via the x402 protocol, no signup, no API key needed.

BASE URL https://agentguard.hergertsynthora.com │ ENDPOINTS 1 │ NETWORK Base │ ASSET USDC │ MEMBER SINCE 2026-07-20 │ MONITORED SINCE 2026-07-20

ASSESSMENT

updated 3h ago

Evidence-backed signals, not a single score. Click any chip for the proof. Measured values stay read-only; unknown is honest.

reliability 94.3%
uptime 24h
0%
uptime 7d
0%
uptime 30d
94.3%
uptime 90d
94.3%
response p95
1520ms
avg response
1174ms
total checks
1,365

Measured on the unpaid 402 handshake, not the paid call. A service can 402 correctly and still fail after payment.

compliance A (14/14), stale (probe failing)

14 of 14 x402 conformance checks pass. Full checklist below.

jump to compliance checklist

price $0.20 (p83 in Verification)
price (min)
$0.20
category percentile (min)
p83 in Verification
endpoints / prices
1 / 1
model
flat
stability
0%
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
68d
registrar
IONOS SE
hosting
custom
domain created
2026-06-04

Identity facts, not a risk score.

traction ---

This service shares a payout address and its probe has been failing, so its on-chain volume is suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.

CHANGES

1 event, detecting since 2026-07-24

Payout, price, and schema changes detected on this service's x402 wire. A payout rotation at an unchanged price shows up here even when nothing else moves. Full feed at /changes.

changes price changed 12d ago (1 since 2026-07-24)

price changed · 12d ago

POST /service · eip155:8453 · USDC: 20000 → 200000

Amounts are on-wire atomic units in the named asset.

see all changes for this service

WHAT IT DOES

ai-derived

No AI synthesis has been produced for this service yet.

ENDPOINTS

Service endpoints with HTTP method, path, description, pricing, and network
METHOD PATH DESCRIPTION PRICE NETWORK ASSET 402 CHANNEL
POST /service x402 Agent Pre-Trade Safety: ONE signed call returns a pre-execution risk verdict (SAFE/CAUTION/BLOCK) for payment/DeFi agents. Combines OFAC SDN/EU/UN/UK sanctions screening + stablecoin peg deviation (bps vs $1) + counterparty on-chain signal into one Ed25519-signed attestation. POST {address, chain?, counterparty?, stablecoin?}. Scoring/data only — never executes trades or moves funds. $0.20 Base USDC header
1 endpoints

REQUEST / RESPONSE EXAMPLE

An unpaid request to POST /service returns HTTP 402 with the payment terms. Settle onchain via your facilitator, then retry with the X-Payment header.

// request
curl -i -X POST 'https://agentguard.hergertsynthora.com/service'
// 402 response (captured by monitor) · 1 payload · click to expand 
[
  {
    "error": "Payment required",
    "accepts": [
      {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x10800a5a5B9d72251566EC651E862A8b4B427dE0",
        "amount": "200000",
        "scheme": "exact",
        "network": "eip155:8453",
        "mimeType": "application/json",
        "resource": "https://agentguard.hergertsynthora.com/service",
        "description": "x402 Agent Pre-Trade Safety: ONE signed call returns a pre-execution risk verdict (SAFE/CAUTION/BLOCK) for payment/DeFi agents. Combines OFAC SDN/EU/UN/UK sanctions screening + stablecoin peg deviation (bps vs $1) + counterparty on-chain signal into one Ed25519-signed attestation. POST {address, chain?, counterparty?, stablecoin?}. Scoring/data only — never executes trades or moves funds.",
        "maxAmountRequired": "200000",
        "maxTimeoutSeconds": 300
      }
    ],
    "resource": {
      "url": "https://agentguard.hergertsynthora.com/service",
      "mimeType": "application/json",
      "description": "x402 Agent Pre-Trade Safety: ONE signed call returns a pre-execution risk verdict (SAFE/CAUTION/BLOCK) for payment/DeFi agents. Combines OFAC SDN/EU/UN/UK sanctions screening + stablecoin peg deviation (bps vs $1) + counterparty on-chain signal into one Ed25519-signed attestation. POST {address, chain?, counterparty?, stablecoin?}. Scoring/data only — never executes trades or moves funds."
    },
    "x402Version": 2
  }
]

OVER TIME

All charts use the 30d selector; each series spans only the dates it has data for. Every series is also served as JSON at /api/v1/services/synthora-agent-pre-trade-safety/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.

UPTIME
07-31 · uptime 93.3% · 735ms avg08-02 · uptime 90.0% · 690ms avg08-04 · uptime 81.0% · 537ms avg08-05 · uptime 0.0%08-06 · uptime 0.0%08-07 · uptime 0.0%08-08 · uptime 0.0%08-09 · uptime 0.0%08-10 · uptime 0.0%08-11 · uptime 0.0%08-12 · uptime 0.0%08-13 · uptime 0.0%07-20 · uptime 100.0% · 1597ms avg07-21 · uptime 96.7% · 2103ms avg07-22 · uptime 96.7% · 1449ms avg07-23 · uptime 96.7% · 2435ms avg07-24 · uptime 95.6% · 2443ms avg07-25 · uptime 98.9% · 910ms avg07-26 · uptime 100.0% · 799ms avg07-27 · uptime 100.0% · 973ms avg07-28 · uptime 98.9% · 933ms avg07-29 · uptime 100.0% · 902ms avg07-30 · uptime 97.8% · 799ms avg07-31 · uptime 93.3% · 735ms avg08-01 · uptime 100.0% · 815ms avg08-02 · uptime 90.0% · 690ms avg08-03 · uptime 98.9% · 759ms avg08-04 · uptime 81.0% · 537ms avg08-05 · uptime 0.0%08-06 · uptime 0.0%08-07 · uptime 0.0%08-08 · uptime 0.0%08-09 · uptime 0.0%08-10 · uptime 0.0%08-11 · uptime 0.0%08-12 · uptime 0.0%08-13 · uptime 0.0%07-2008-13
30d UPTIME 94.3%
RESPONSE TIME
07-20 · 1597ms avg07-20 · 1597ms avg07-21 · 2103ms avg07-21 · 2103ms avg07-22 · 1449ms avg07-22 · 1449ms avg07-23 · 2435ms avg07-23 · 2435ms avg07-24 · 2443ms avg07-24 · 2443ms avg07-25 · 910ms avg07-25 · 910ms avg07-26 · 799ms avg07-26 · 799ms avg07-27 · 973ms avg07-27 · 973ms avg07-28 · 933ms avg07-28 · 933ms avg07-29 · 902ms avg07-29 · 902ms avg07-30 · 799ms avg07-30 · 799ms avg07-31 · 735ms avg07-31 · 735ms avg08-01 · 815ms avg08-01 · 815ms avg08-02 · 690ms avg08-02 · 690ms avg08-03 · 759ms avg08-03 · 759ms avg08-04 · 537ms avg08-04 · 537ms avg08-05 · 0ms avg08-05 · 0ms avg08-06 · 0ms avg08-06 · 0ms avg08-07 · 0ms avg08-07 · 0ms avg08-08 · 0ms avg08-08 · 0ms avg08-09 · 0ms avg08-09 · 0ms avg08-10 · 0ms avg08-10 · 0ms avg08-11 · 0ms avg08-11 · 0ms avg08-12 · 0ms avg08-12 · 0ms avg08-13 · 0ms avg08-13 · 0ms avg07-2008-13
AVG RESP 1174ms
PRICE (captured 402, USD)
07-20 · $0.0208-01 · $0.2008-13 · $0.20$0.2007-2008-13
SUB-SCORES (uptime + x402 compliance)
07-20 compliance: 100% checks07-21 uptime: 96.7% compliance: 100% checks07-22 uptime: 96.8% compliance: 100% checks07-23 uptime: 96.8% compliance: 100% checks07-24 uptime: 96.5% compliance: 100% checks07-25 uptime: 96.8% compliance: 100% checks07-26 uptime: 97.4% compliance: 100% checks07-27 uptime: 97.8% compliance: 100% checks07-28 uptime: 97.9% compliance: 100% checks07-29 uptime: 98.1% compliance: 100% checks07-30 uptime: 98.2% compliance: 100% checks07-31 uptime: 97.7% compliance: 100% checks08-01 uptime: 97.9% compliance: 100% checks08-02 uptime: 97.3% compliance: 100% checks08-03 uptime: 97.4% compliance: 100% checks08-04 uptime: 96.8% compliance: 100% checks08-05 uptime: 96.5% compliance: 100% checks08-06 uptime: 96.2% compliance: 100% checks08-07 uptime: 95.9% compliance: 100% checks08-08 uptime: 95.6% compliance: 100% checks08-09 uptime: 95.3% compliance: 100% checks08-10 uptime: 95.1% compliance: 100% checks08-11 uptime: 94.7% compliance: 100% checks08-12 uptime: 94.5% compliance: 100% checks08-13 uptime: 94.3% compliance: 100% checksuptimecompliance07-2008-13

checklist grew 11->14 on 2026-07-28; a step here is a metric change, not a regression

PILLARS OVER TIME (measured)
price percentile in Verification
site signals present (of 6)

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.

VOLUME (on-chain settlement, USD)
This service shares a payout address and its probe has been failing, so its on-chain volume is suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.
DISTINCT BUYERS
This service shares a payout address and its probe has been failing, so its distinct on-chain buyers are suppressed until it responds again. Settlements on a shared address while a member is down are not attributed to it.

COMPLIANCE

14/14 checks pass · grade A · stale (probe failing)

last 402 captured 2026-08-01 · last up 2026-08-04

  • 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
TIME STATUS RESP CAUSE
○ DOWN 516ms bad_status: unexpected HTTP 200
○ DOWN 112ms bad_status: unexpected HTTP 200
○ DOWN 161ms bad_status: unexpected HTTP 200
○ DOWN 406ms bad_status: unexpected HTTP 200
○ DOWN 182ms bad_status: unexpected HTTP 200
○ DOWN 671ms bad_status: unexpected HTTP 200
○ DOWN 8933ms bad_status: unexpected HTTP 200
○ DOWN 256ms bad_status: unexpected HTTP 200
○ DOWN 1342ms bad_status: unexpected HTTP 200
○ DOWN 806ms bad_status: unexpected HTTP 200
○ DOWN 332ms bad_status: unexpected HTTP 200
○ DOWN 166ms bad_status: unexpected HTTP 200
○ DOWN 144ms bad_status: unexpected HTTP 200
○ DOWN 1002ms bad_status: unexpected HTTP 200
○ DOWN 909ms bad_status: unexpected HTTP 200
○ DOWN 123ms bad_status: unexpected HTTP 200
○ DOWN 382ms bad_status: unexpected HTTP 200
○ DOWN 576ms bad_status: unexpected HTTP 200
18 of 1,365 checks · live count

EMBED THIS BADGE

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SYNTHORA Agent Pre-Trade Safety listed on x402-list
status
SYNTHORA Agent Pre-Trade Safety uptime on x402-list
live uptime
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[ update this listing ]

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