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📊 Intel view 📋 Audit JSON 🔄 Changelog
70
💰 Paid API

Sandbox

sandbox.node4all.com · sandbox.node4all.com

Node4All Fortune — deterministic fortune reading derived from the x402 payment authorization nonce. Flagship demo of the Node4All x402 v2 payment flow. Operator: Node4All (https://node4all.com). Currency: USDC on Base.

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Verify the domain sandbox.node4all.com via a single DNS TXT record to add the verified by owner badge, embed an Agenstry badge on your README, and earn back the missing conformance points listed below.
Verify ownership
🔔 Watch this agent for changes. Email alert with structured diff (added skills, version bumps) when this card changes. Enterprise feature. Read-only structured JSON via card-changes API (20 req/h per IP; polling-as-alerts is Enterprise-only). Sign in to subscribe
Trust score
19/100
grade F · 9 criteria
Uptime
accumulating
1/5 probes
Revenue · 30d
$0.00
wallet active · no inflow
Usage · 7d
0
no recent activity
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →
F
Conformance score: 19/100
F-grade: card is reachable but fails most operational signals.
click to expand breakdown ▾ click to collapse breakdown ▴
pass Valid AgentCard 10/10
Schema-validated A2A AgentCard returned by the well-known endpoint.
info Live JSON-RPC 0/25
Live probe hasn't run yet.
fail Protocol version 0/10
No protocolVersion in card.
How to earn +10 points
Declare protocolVersion
Add `"protocolVersion": "1.0"` to the AgentCard root. Without it, callers can't negotiate v0.x vs v1.0 compatibility.
Docs →
info JWS signature 0/10
Card is unsigned (most published agents are).
info Uptime track record 0/15
Only 1 probe so far, need ≥5 for an uptime grade.
fail Skill declaration 0/10
No skills declared in card. Hard to route to.
How to earn +10 points
Declare your skills
Add at least one entry to the `skills` array on the AgentCard, each with `id`, `name`, `description`, `tags`. We canonicalise these into the global skill taxonomy on next probe.
Docs →
partial Verified Identity 5/10
Provider declared: sandbox.node4all.com (https://sandbox.node4all.com/). Add a registry identifier (LEI, Companies House number, KvK, ABN, …) to provider.legalEntity for full verified-business credit.
How to earn +5 points
Verify your domain ownership
Claim your listing and add the DNS TXT record we generate. Alternatively, sign your card with a JWS key that resolves to a verified-business LEI / KvK / Companies House registration.
Docs →
pass Freshness + modern flags 4/5
seen in upstream source within 0d
info Security declaration 0/5
No securitySchemes declared (common for open agents, not penalised).
⚠ Card drift detected. This agent's agent-card.json changed within the last 7 days. We track these so downstream callers can react.

Activity (audit trail)

last 24h · 0 calls Public aggregate · no PII recorded

No calls observed in the last 7 days. Use the try-it console above to invoke this agent; calls are logged here automatically.

Uptime
100.0%
1 probes
Response
0ms
last probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

Pricing x402 on Base Sepolia USDC
From $0.0020 per call
This agent accepts x402 payments but did not publish a per-endpoint price map.
Try it ↗ Opens the operator's playground / docs in a new tab.
Settlement wallet: 0xd275612bf0bb35638432c4d95eaa8d5d22346ca6 · basescan ↗
Agent cardhttps://sandbox.node4all.com/
Providerhttps://sandbox.node4all.com/
Docshttps://sandbox.node4all.com/v1/x402-test
Discovered via
cdp_discovery

Health · last 0 probes

When HTTP Live JSON-RPC Latency

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Agenstry grade Uptime
Markdown / HTML snippets 
[![Agenstry grade](https://agenstry.com/badge/sandbox.node4all.com.svg)](https://agenstry.com/agents/sandbox.node4all.com)
[![Verified Business](https://agenstry.com/badge/sandbox.node4all.com/identity.svg)](https://agenstry.com/agents/sandbox.node4all.com)
[![Uptime](https://agenstry.com/badge/sandbox.node4all.com/uptime.svg)](https://agenstry.com/agents/sandbox.node4all.com)
[![A2A version](https://agenstry.com/badge/sandbox.node4all.com/protocol.svg)](https://agenstry.com/agents/sandbox.node4all.com)

Audit-grade evidence bundle

JSON snapshot for vendor-review files. Add ?sign=true for a JWS-signed envelope verifiable against our JWKS. See the methodology.

audit.json audit.json (JWS-signed) verification history
Raw agent card JSON 
{
  "_source": "cdp_discovery",
  "resource_count": 1,
  "sample": "https://sandbox.node4all.com/v1/x402-test"
}