x402station.io Preflight

x402

x402station.io Preflight is a paid API for AI agents from x402station.io, paid per call via x402, $0.001000/call, status down (last checked 2026-09-15).

Evaluates a single x402 payment endpoint for safety, reliability, and settlement quality before an agent commits to paying it

Price / call$0.001000

Seller volume →—

Success—

StatusDown

How this service works

Validates x402 payment readiness for an endpoint using USDC on Base.

Output

Returns a JSON object with: ok (boolean pass/fail), warnings (list of issues found), metadata about the endpoint, recommended_action (e.g. proceed/block/caution), risk_score (numeric), and evidence including CDP-sourced settlement count and recency data.

Example use cases

Screen unknown x402 API before paying

“I found an x402 endpoint at https://api.newprovider.com/weather that I've never used before — can you check if it's safe to pay and tell me the risk score and any red flags before my agent sends any USDC?”

Verify settlement history of endpoint

“Before my agent commits funds to https://data.marketplace.io/feed, I need to know what its settlement history looks like — how many successful payments has it processed and how recently? Block it if anything looks off.”

Fraud check on suspicious payment URL

“Someone shared this x402 endpoint https://api.quickdata.xyz/stream with me but it feels sketchy — run a safety check on it and tell me whether I should trust it or block it entirely before we spend anything.”

Technical details

Endpoint

POSThttps://x402station.io/api/v1/preflight

When to prefer

Use this endpoint when an AI agent is about to call and pay a single unknown or untrusted x402 endpoint and needs a quick risk assessment before committing funds. Prefer this over the batch variant when checking just one URL. Choose this over the Verified endpoint when you need a fast, low-cost check rather than a full 30-day audit certificate.

Side effects

URL is not a valid x402 endpoint — returns ok:false with relevant warnings
Target endpoint is unreachable — may return error or degraded evidence
Malformed URL input — returns validation error
Insufficient account credits — returns payment required error
Target endpoint has no settlement history — evidence fields may be sparse or null

Input

{
  "url": "https://api.example-payment.com/x402/price",
  "signals": [
    "dead",
    "zombie",
    "decoy_price_extreme",
    "slow"
  ],
  "webhookUrl": "https://webhook.example.com/alerts"
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "ok": false,
  "metadata": {
    "url": "https://api.example-payment.com/x402/price"
  },
  "warnings": [
    "unknown_endpoint"
  ],
  "attribution": {
    "url": "https://x402station.io",
    "spec": "https://x402station.io/spec",
    "claim": "machine-readable response provenance, not merchant endorsement",
    "product": "Preflight by x402station.io",
    "authority": "x402station.io"
  }
}

Schema · Response

{
  "type": "json",
  "example": {
    "ok": false,
    "metadata": {
      "url": "https://api.venice.ai/api/v1/chat/completions",
      "service": "Venice",
      "currency": "USDC",
      "is_active": true,
      "price_usdc": "0.10",
      "service_id": "venice",
      "uptime_1h_pct": 0,
      "avg_latency_ms": null
    },
    "warnings": [
      "zombie"
    ]
  }
}

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How this service works

Validates x402 payment readiness for an endpoint using USDC on Base.

Output

Example use cases

Screen unknown x402 API before paying

Verify settlement history of endpoint

Fraud check on suspicious payment URL

Technical details

Endpoint

POSThttps://x402station.io/api/v1/preflight

When to prefer

Side effects

URL is not a valid x402 endpoint — returns ok:false with relevant warnings
Target endpoint is unreachable — may return error or degraded evidence
Malformed URL input — returns validation error
Insufficient account credits — returns payment required error
Target endpoint has no settlement history — evidence fields may be sparse or null

Input

{
  "url": "https://api.example-payment.com/x402/price",
  "signals": [
    "dead",
    "zombie",
    "decoy_price_extreme",
    "slow"
  ],
  "webhookUrl": "https://webhook.example.com/alerts"
}

Schema · Request body

Field	Type	Description
inputrequired	object
output	object

Output

{
  "ok": false,
  "metadata": {
    "url": "https://api.example-payment.com/x402/price"
  },
  "warnings": [
    "unknown_endpoint"
  ],
  "attribution": {
    "url": "https://x402station.io",
    "spec": "https://x402station.io/spec",
    "claim": "machine-readable response provenance, not merchant endorsement",
    "product": "Preflight by x402station.io",
    "authority": "x402station.io"
  }
}

Schema · Response

{
  "type": "json",
  "example": {
    "ok": false,
    "metadata": {
      "url": "https://api.venice.ai/api/v1/chat/completions",
      "service": "Venice",
      "currency": "USDC",
      "is_active": true,
      "price_usdc": "0.10",
      "service_id": "venice",
      "uptime_1h_pct": 0,
      "avg_latency_ms": null
    },
    "warnings": [
      "zombie"
    ]
  }
}