These are observations, not accusations. A band of LOW, MEDIUM or HIGH describes how much of what we check we were able to confirm — it is not a judgement about the operator of an endpoint. Every signal, its weight and its rationale are published on the methodology page, and any operator can claim an endpoint, correct a fact or opt out.
What does this x402 endpoint charge?
0.030000 USDC per request
https://vibesprings.net/api/address-risk
Risk band: LOW
96/100
Endpoint
| URL | https://vibesprings.net/api/address-risk |
|---|---|
| Canonical | https://vibesprings.net/api/address-risk |
| Endpoint id | ffa4767dc7e17c037cf64ee3ff361edc |
| HTTP status | 402 |
| Latency | 223 ms |
| Redirects | 0 |
| TLS | handshake okThe negotiated TLS version is not exposed to a Worker. |
| Wire form | x402 v2 — PAYMENT-REQUIRED header |
| Bytes read | 2 |
| Strict decoder | accepteddecodePaymentRequired, imported from tx402 — the same code the SDK runs before it pays. |
Payment
accepted by the decoderThese terms were accepted by the strict decoder tx402 uses before it pays.
| Price | 0.030000 USDC |
|---|---|
| Amount (atomic) | 30000 |
| Scheme | exact |
| Network | eip155:8453 in manifestRecognized means present in the tx402 signed release manifest. Nothing more is claimed. |
| Asset | USDC 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 in manifestRecognized means present in the tx402 signed release manifest. Nothing more is claimed. |
| Pay to | 0x38C063312719220c676E988f0DEE14B4ec0e44C8 |
| Pay to declared dynamic | nox402 v2 has no on-the-wire declaration of a dynamic payTo, so this is usually unobservable. |
| Authorization window | 300s |
| Resource | https://vibesprings.net/api/address-risk |
| MIME type | application/json |
| Description | On-chain address risk scoring and intelligence. Analyzes any Ethereum, Base, or Sepolia address across 6 security signals: balance profile, transaction history depth, contract detection, bytecode analysis (self-destruct patterns, delegate calls), proxy detection (EIP-1967), and known-risky address matching. Returns a 0-100 risk score, severity-ranked flags, and full profile data in a single call. |
| Facilitator | not observed |
Risk
Band: LOW 96/100 · v1 · static_onlyA band describes how much of what we check we were able to confirm. It is not a judgement about the operator of an endpoint.
- Result: pass 25 The challenge decodes under the strict x402 decoder tx402 uses before paying. challenge_decodes
- Result: pass 15 The challenge describes the endpoint that served it. resource_origin_match
- Result: pass 12 The amount is a canonical atomic integer. amount_canonical
- Result: pass 12 The recipient is a well-formed address for the declared network. pay_to_wellformed
- Result: pass 8 The network is in the tx402 signed release manifest. network_recognized
- Result: pass 8 The asset is in the tx402 signed release manifest for this network. asset_recognized
- Result: skip — The challenge named no facilitator. facilitator_known
- Result: pass 6 The payment scheme is one tx402 can route. scheme_known
- Result: pass 5 The endpoint was reached over a valid TLS connection. tls_ok
- Result: warn 4 The authorization window is outside the maximum tx402 will sign for. timeout_sane
- Result: pass 3 No redirect downgraded the connection. redirect_scheme_downgrade
- Result: pass 3 The endpoint serves the x402 v2 header form. wire_form
- Result: pass 2 The amount is within the range we see for x402 endpoints. amount_magnitude_band
Security
1 to look at
A check that could not run reports skip, and a skip is never counted as a pass.
- Result: pass wire_form_detected Served as v2-header.
- Result: pass base64_strict The strict decoder accepted the header's base64 framing.
- Result: pass json_wellformed
- Result: pass x402_version_known Declared x402Version 2.
- Result: pass accepts_present The challenge offers one way to pay.
- Result: pass size_within_limit Read 2 bytes, within the probe's cap.
- Result: pass network_caip2_wellformed network: eip155:8453
- Result: pass network_recognized Recognized means present in the tx402 signed release manifest.
- Result: pass asset_recognized Recognized means present in the tx402 signed release manifest.
- Result: pass amount_atomic_canonical
- Result: pass amount_positive
- Result: pass pay_to_wellformed
- Result: warn max_timeout_sane Authorization window 300s exceeds the tx402 maximum of 60s.
- Result: pass resource_origin_match
- Result: pass scheme_known
- Result: skip facilitator_known The challenge named no facilitator.
- Result: pass mime_type_wellformed mimeType: application/json
- Result: pass extra_wellformed `extra` carries 2 field(s), preserved verbatim.
- Result: skip amount_within_observed_range needs our data No prior observations of this endpoint.
- Result: skip recipient_matches_observed needs our data No prior observations of this endpoint.
Observed
| First seen | 2026-08-15T04:00:12Z |
|---|---|
| Last seen | 2026-08-15T14:32:22Z |
| Scans recorded | 2 |
| Availability (30d) | not measured yet |
| Latency p50 | not measured yet |
| 2026-08-15T05:45:30Z | first_seen: challenge_hash — → f4d5cac8e931a775478c7edd8f585f55985a2c00da94a3dbedf676630e68112a |
|---|
Test with tx402 →
Pre-filled with this endpoint's real terms. Your signer stays in your process — this service never sees a key, never asks for one, and cannot build a payment.
CLI — dry run, nothing is signed
npx tx402 call "https://vibesprings.net/api/address-risk" \
--max-spend "0.030000 USDC" \
--network "eip155:8453" \
--dry-run
# --dry-run stops after the policy decision. Nothing is signed and nothing is spent.
TypeScript
import { createTx402Client } from "tx402";
// Your signer stays in your process. tools.tx402.io never sees a key,
// never asks for one, and cannot build a payment.
import { signers } from "./signers.js";
const tx402 = createTx402Client({
signers,
policy: {
maxPerRequest: "0.030000 USDC",
allowedDomains: ["vibesprings.net"],
allowedNetworks: ["eip155:8453"],
},
});
// Policy and budget are committed before the signer is reachable, so a
// refusal here is a payment that was never authorized.
const response = await tx402.fetch("https://vibesprings.net/api/address-risk");
Python
from tx402 import Tx402Client, Policy
# Your signer stays in your process. tools.tx402.io never sees a key,
# never asks for one, and cannot build a payment.
tx402 = Tx402Client(
evm_signer=evm,
policy=Policy(
max_per_request="0.030000 USDC",
allowed_domains=["vibesprings.net"],
allowed_networks=["eip155:8453"],
),
)
# Policy and budget are committed before the signer is reachable, so a
# refusal here is a payment that was never authorized.
response = tx402.fetch("https://vibesprings.net/api/address-risk")
This report, as JSON or Markdown
curl -sS 'https://tools.tx402.io/api/v1/inspect?url=https%3A%2F%2Fvibesprings.net%2Fapi%2Faddress-risk'
# The same result as Markdown, for a terminal or an agent:
curl -sS -H 'Accept: text/markdown' 'https://tools.tx402.io/inspect?url=https%3A%2F%2Fvibesprings.net%2Fapi%2Faddress-risk'
The challenge, as served
Public data: the endpoint serves this to anyone who asks. It is shown exactly as it arrived, truncated to the documented cap.
raw challenge
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SHA-256 of the canonicalized challenge: f4d5cac8e931a775478c7edd8f585f55985a2c00da94a3dbedf676630e68112a
Raw signals
The exact input the scoring function was given. A signal we could not determine has
observed: false and contributes nothing to the score — it is never counted as a failure.
signals
[
{
"id": "probe_ok",
"value": true,
"observed": true,
"detail": null
},
{
"id": "challenge_served",
"value": true,
"observed": true,
"detail": null
},
{
"id": "challenge_decodes",
"value": true,
"observed": true,
"detail": null
},
{
"id": "wire_form",
"value": "v2-header",
"observed": true,
"detail": null
},
{
"id": "x402_version",
"value": 2,
"observed": true,
"detail": null
},
{
"id": "tls_ok",
"value": true,
"observed": true,
"detail": null
},
{
"id": "tls_protocol",
"value": null,
"observed": false,
"detail": "The negotiated TLS version is not exposed to the probe."
},
{
"id": "redirect_count",
"value": 0,
"observed": true,
"detail": null
},
{
"id": "redirect_scheme_downgrade",
"value": false,
"observed": true,
"detail": "Cross-scheme redirects are refused."
},
{
"id": "resource_origin_match",
"value": true,
"observed": true,
"detail": null
},
{
"id": "network_recognized",
"value": true,
"observed": true,
"detail": "Recognized means present in the tx402 signed release manifest."
},
{
"id": "asset_recognized",
"value": true,
"observed": true,
"detail": "Recognized means present in the tx402 signed release manifest."
},
{
"id": "facilitator_known",
"value": null,
"observed": false,
"detail": "The challenge named no facilitator."
},
{
"id": "amount_canonical",
"value": true,
"observed": true,
"detail": null
},
{
"id": "amount_magnitude_band",
"value": "small",
"observed": true,
"detail": null
},
{
"id": "pay_to_wellformed",
"value": true,
"observed": true,
"detail": null
},
{
"id": "pay_to_declared_dynamic",
"value": false,
"observed": true,
"detail": null
},
{
"id": "timeout_sane",
"value": false,
"observed": true,
"detail": "Authorization window 300s exceeds the tx402 maximum of 60s."
},
{
"id": "scheme_known",
"value": true,
"observed": true,
"detail": null
},
{
"id": "requirement_count",
"value": 1,
"observed": true,
"detail": null
},
{
"id": "challenge_size_bytes",
"value": 2,
"observed": true,
"detail": null
},
{
"id": "first_seen_age_days",
"value": null,
"observed": false,
"detail": "No history yet."
},
{
"id": "scan_count",
"value": null,
"observed": false,
"detail": "No history yet."
},
{
"id": "availability_30d",
"value": null,
"observed": false,
"detail": "No history yet."
},
{
"id": "latency_p50_ms",
"value": null,
"observed": false,
"detail": "No history yet."
},
{
"id": "price_changes_90d",
"value": null,
"observed": false,
"detail": "No history yet."
},
{
"id": "recipient_changes_90d",
"value": null,
"observed": false,
"detail": "No history yet."
},
{
"id": "recipient_unstable_undeclared",
"value": null,
"observed": false,
"detail": "No history yet."
},
{
"id": "terms_changed_within_24h",
"value": null,
"observed": false,
"detail": "No history yet."
}
]