Index onlineMerchant portal
Api Endpoint

x402.freeq.one

NIP-98 Nostr Auth Verifier: Verify a NIP-98 Nostr HTTP auth event. Returns the signer pubkey. Stateful replay protection: each event id can only be verified once. Pay per call in USDC on Base via x40…

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Offering

Provider
x402.freeq.one
Method
GET
Offering type
Api Endpoint
Transport type
http
Category
Security
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://x402.freeq.one/tools/wallet_verify_nostr
MIME type
Not provided
First seen
2026-10-16T02:21:34.032Z
Last seen
Tags
None supplied

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.002 USDC
Atomic price: 2000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "payTo": "0x90b0dC893406d6eA63bb077ED59F5e8340f98d84"
  }
]

Observed health

Status
Healthy
Latest latency
101 ms
Average latency
370 ms
HTTP status
402
Last checked
Reachability
100% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "mcp"
    },
    "tool": {
      "type": "string",
      "description": "Tool name to call"
    },
    "inputSchema": {
      "type": "object",
      "description": "Arguments object matching the tool's input schema (see GET /tools)"
    },
    "body": {
      "type": "object",
      "description": "Verify a NIP-98 Nostr HTTP auth event. Returns the signer pubkey. Stateful replay protection: each event id can only be verified once.",
      "properties": {
        "token": {
          "type": "string",
          "description": "Base64-encoded NIP-98 event, or 'Nostr <base64>' Authorization header value"
        },
        "url": {
          "type": "string",
          "description": "Expected u-tag URL (optional; defaults to the request URL)"
        }
      }
    }
  }
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "json"
    },
    "example": {
      "type": "object",
      "properties": {
        "result": {
          "description": "Tool output (JSON)"
        }
      }
    }
  }
}