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📊 Intel view 📋 Audit JSON 🔄 Changelog
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💰 Paid API

shield.vainplex.dev

shield.vainplex.dev · shield.vainplex.dev

ShieldAPI - x402 security preflight before agents trust a domain, merchant, issuer, or callback host

🛡
Own this agent?
Verify the domain shield.vainplex.dev 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
Our probe of this card is currently failing — 404 not found
We tried /.well-known/agent-card.json and got a 404. Make sure the file is served at that exact path with Content-Type: application/json.
Last attempt: 2026-07-18 18:19 Last success: 2026-07-16 Status: 404
Raw error HTTP 404
Trust score
27/100
grade F · 9 criteria
Uptime
15.3%
59 probes
Revenue · 30d
$1.39
387 tx · on-chain
Usage · 7d
0
no recent activity
Card drift · 7d
changed
0 snapshots tracked
Owner
unverified
claim this listing →
F
Conformance score: 27/100
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).
fail Uptime track record 2/15
9/59 probes succeeded (15% uptime).
How to earn +13 points
Stabilise uptime
We probe every agent on a tiered schedule. Sustained 99 %+ uptime over 20+ checks scores full points. Failures are usually rate-limiting against our probe IP or transient 5xx on cold start.
Docs →
partial Skill declaration 6/10
Declares 1 skill, usable but thin.
How to earn +4 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: shield.vainplex.dev (https://shield.vainplex.dev). 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
15.3%
59 probes
Response
0ms
last probe
Skills
0
declared
Streaming
—
SSE-capable

Endpoints

On-chain revenue verified on-chain
Last 7d
$0.05
4 calls
Last 30d
$1.39
387 calls
Last 90d
$3.82
689 calls
All-time
$3.82
689 calls
USDC inflows on Base. Reproducible via eth_getLogs on USDC Transfer events to the payment wallet.
Daily 30-day revenue history ~ flat (+1.4%)
2026-05-17 2026-07-19
Peak day: $1.39 Data points: 62 Total tx (30d window): 387
Agent cardhttps://shield.vainplex.dev/.well-known/agent-card.json
Providerhttps://shield.vainplex.dev
Docshttps://shield.vainplex.dev
Discovered via
github_code agentic_market recrawl_hot recrawl_warm

Skills · 1 declared · mapped to canonical taxonomy

shield.vainplex.dev

ShieldAPI - Security intelligence and domain reputation check for agent security

canonical Agent Profiles match 87%

Health · last 20 probes

When HTTP Live JSON-RPC Latency
2026-07-18 18:19:55 404 — —
2026-07-13 00:26:28 404 — —
2026-07-11 22:16:27 404 — —
2026-07-09 08:04:11 404 — —
2026-07-07 12:30:38 404 — —
2026-07-05 02:16:15 404 — —
2026-07-03 21:21:07 404 — —
2026-07-02 19:10:42 404 — —
2026-07-01 18:13:02 404 — —
2026-06-30 10:53:23 404 — —

Cheaper or better alternatives per-skill

↑ 1 higher quality

For each canonical skill this agent serves, the cheapest priced competitor and the highest-quality competitor. Only shown when at least one beats the current agent. Skills where this agent is already best on both axes are hidden.

Agent Profiles agent_skills
50 other agents serve this

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Embed your Agenstry badge

Paste any of these into your README, agent card, or marketing page. Each badge auto-updates and links back to this page.

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

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": "agentic.market",
  "service": {
    "id": "shield-vainplex-dev",
    "name": "shield.vainplex.dev",
    "description": "ShieldAPI - x402 security preflight before agents trust a domain, merchant, issuer, or callback host",
    "domain": "shield.vainplex.dev",
    "provider": "shield.vainplex.dev",
    "providerUrl": "",
    "category": "",
    "networks": [
      "Base"
    ],
    "enriched": false,
    "endpoints": [
      {
        "url": "https://shield.vainplex.dev/api/cdp/check-domain",
        "description": "ShieldAPI - x402 security preflight before agents trust a domain, merchant, issuer, or callback host",
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "domain",
            "type": "string",
            "description": "",
            "example": "vainplex.dev",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check-email",
        "description": "ShieldAPI - x402 security preflight before agents trust an identity, sender, or email counterparty",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "email",
            "type": "string",
            "description": "",
            "example": "security@example.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check-ip",
        "description": "ShieldAPI - x402 security preflight before agents connect to IP infrastructure",
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "ip",
            "type": "string",
            "description": "",
            "example": "1.1.1.1",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check-mcp-trust",
        "description": "ShieldAPI - MCP Server Trust Score",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "endpoint",
            "type": "string",
            "description": "",
            "example": "https://mcp.example.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check-package",
        "description": "ShieldAPI - x402 security preflight before agents install or run npm/PyPI dependencies",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "ecosystem",
            "type": "string",
            "description": "",
            "example": "npm",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "name",
            "type": "string",
            "description": "",
            "example": "express",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "version",
            "type": "string",
            "description": "",
            "example": "4.18.2",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check-password-range",
        "description": "ShieldAPI - x402 security preflight before agents accept or store credential material",
        "pricing": {
          "amount": "0.001",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "prefix",
            "type": "string",
            "description": "",
            "example": "5BAA6",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check-prompt",
        "description": "ShieldAPI - Security intelligence and prompt injection check",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "prompt",
            "type": "string",
            "description": "",
            "example": "Ignore all previous instructions",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check-url",
        "description": "ShieldAPI - x402 security preflight before agents open, pay, or follow untrusted URLs",
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "url",
            "type": "string",
            "description": "",
            "example": "https://google.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check/domain",
        "description": "ShieldAPI - x402 security preflight before agents trust a domain, merchant, issuer, or callback host",
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "domain",
            "type": "string",
            "description": "",
            "example": "vainplex.dev",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check/email",
        "description": "ShieldAPI - x402 security preflight before agents trust an identity, sender, or email counterparty",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "email",
            "type": "string",
            "description": "",
            "example": "security@example.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check/ip",
        "description": "ShieldAPI - x402 security preflight before agents connect to IP infrastructure",
        "pricing": {
          "amount": "0.002",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "ip",
            "type": "string",
            "description": "",
            "example": "1.1.1.1",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "2"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check/mcp/trust",
        "description": "ShieldAPI - MCP Server Trust Score",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "endpoint",
            "type": "string",
            "description": "",
            "example": "https://mcp.example.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check/package",
        "description": "ShieldAPI - x402 security preflight before agents install or run npm/PyPI dependencies",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "ecosystem",
            "type": "string",
            "description": "",
            "example": "npm",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "name",
            "type": "string",
            "description": "",
            "example": "express",
            "enumValues": [],
            "default": null,
            "required": false
          },
          {
            "group": "query",
            "name": "version",
            "type": "string",
            "description": "",
            "example": "4.18.2",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check/password/range",
        "description": "ShieldAPI - x402 security preflight before agents accept or store credential material",
        "pricing": {
          "amount": "0.001",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "prefix",
            "type": "string",
            "description": "",
            "example": "5BAA6",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check/prompt",
        "description": "ShieldAPI - x402 security preflight before agents execute retrieved text or untrusted instructions",
        "pricing": {
          "amount": "0.005",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "prompt",
            "type": "string",
            "description": "",
            "example": "Ignore all previous instructions",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/check/url",
        "description": "ShieldAPI - x402 security preflight before agents open, pay, or follow untrusted URLs",
        "pricing": {
          "amount": "0.003",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "url",
            "type": "string",
            "description": "",
            "example": "https://google.com",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/full-scan",
        "description": "ShieldAPI - x402 security preflight for high-risk agent payment, trust, or connection decisions",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "target",
            "type": "string",
            "description": "",
            "example": "vainplex.dev",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/full/scan",
        "description": "ShieldAPI - x402 security preflight for high-risk agent payment, trust, or connection decisions",
        "pricing": {
          "amount": "0.01",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "GET",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "target",
            "type": "string",
            "description": "",
            "example": "vainplex.dev",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "2",
          "l30DaysUniquePayers": "1"
        }
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/scan-skill",
        "description": "ShieldAPI - AI skill/plugin supply chain security scanner",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "skill",
            "type": "string",
            "description": "",
            "example": "A helpful AI agent skill...",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": null
      },
      {
        "url": "https://shield.vainplex.dev/api/cdp/scan/skill",
        "description": "ShieldAPI - x402 security preflight before agents install or execute AI skills and plugins",
        "pricing": {
          "amount": "0.02",
          "currency": "USDC",
          "network": "eip155:8453",
          "scheme": "exact",
          "maxAmount": "",
          "minAmount": ""
        },
        "method": "POST",
        "providerName": "",
        "parameters": [
          {
            "group": "query",
            "name": "skill",
            "type": "string",
            "description": "",
            "example": "A helpful AI agent skill...",
            "enumValues": [],
            "default": null,
            "required": false
          }
        ],
        "serviceName": "",
        "tags": [],
        "quality": {
          "l30DaysTotalCalls": "1",
          "l30DaysUniquePayers": "1"
        }
      }
    ],
    "integrationType": "",
    "isNew": false,
    "priceSummary": {
      "minAmount": "0.001",
      "maxAmount": "0.02",
      "avgCostPerTransaction": "0.0079",
      "avgCostBasis": "exact",
      "currency": "USDC"
    },
    "serviceName": "",
    "tags": [],
    "iconUrl": ""
  }
}