{
  "x402Version": 2,
  "id": 1158,
  "slug": "1158",
  "resource": "https://gateway.stride20k.com/v1/preflight",
  "description": "Spend-guard preflight: deterministic 0-100 score for any x402 resource URL before an agent pays it. One SSRF-guarded probe of the live 402 (terms decode, payTo, price sanity) plus origin /.well-known/x402.json plus our collector's Bazaar presence and observed age. Rubric: start 50; +15 valid 402; +10 terms decode; +5 payTo; +5 price<=$5 (-10 above); +10 catalog; +15 Bazaar-listed; +10 age>=7d (+5 >=1d); -20 unreachable. Raw signals in every response; auditable. Not an endorsement.",
  "type": "http",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0x552Cc4A10878C7F20574489D47184249657Ca3f6",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "10000",
      "maxTimeoutSeconds": 60
    }
  ],
  "outputSchema": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "queryParams": {
            "resource": "https://gateway.stride20k.com/fx/:base/:quote"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "data": {
              "flags": [
                "age-unknown-or-new"
              ],
              "note": "Deterministic published rubric over the target's own public surfaces plus our collector archive. Presence and protocol validity, not an endorsement. NOT financial advice.",
              "resource": "https://gateway.stride20k.com/fx/:base/:quote",
              "score": 100,
              "signals": {
                "is402": true,
                "listedInBazaarNow": true,
                "network": "eip155:8453",
                "observedAgeDays": 0.1,
                "onChainBuyerCounts": "unavailable",
                "payToPresent": true,
                "priceUsd": 0.002,
                "reachable": true,
                "scheme": "exact",
                "status": 402,
                "termsDecodable": true,
                "wellKnownPresent": true
              }
            },
            "endpoint": "/v1/preflight",
            "meta": {
              "attribution": null,
              "cached": false,
              "fetchedAt": "2026-07-04T00:00:00.000Z",
              "source": "direct probe of the target + Stride20k collector archive"
            },
            "ok": true
          },
          "type": "json"
        }
      },
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET"
                ],
                "type": "string"
              },
              "queryParams": {
                "properties": {
                  "resource": {
                    "description": "The x402 resource URL to preflight, exactly as advertised.",
                    "pattern": "^https?://.+",
                    "type": "string",
                    "urlSafety": true
                  }
                },
                "required": [
                  "resource"
                ],
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "data": {
                    "properties": {
                      "flags": {
                        "items": {
                          "type": "string"
                        },
                        "type": "array"
                      },
                      "note": {
                        "type": "string"
                      },
                      "resource": {
                        "type": "string"
                      },
                      "score": {
                        "description": "0-100, deterministic published rubric.",
                        "type": "number"
                      },
                      "signals": {
                        "properties": {
                          "is402": {
                            "type": "boolean"
                          },
                          "listedInBazaarNow": {
                            "type": [
                              "boolean",
                              "null"
                            ]
                          },
                          "network": {
                            "type": [
                              "string",
                              "null"
                            ]
                          },
                          "observedAgeDays": {
                            "type": [
                              "number",
                              "null"
                            ]
                          },
                          "onChainBuyerCounts": {
                            "type": "string"
                          },
                          "payToPresent": {
                            "type": "boolean"
                          },
                          "priceUsd": {
                            "type": [
                              "number",
                              "null"
                            ]
                          },
                          "reachable": {
                            "type": "boolean"
                          },
                          "scheme": {
                            "type": [
                              "string",
                              "null"
                            ]
                          },
                          "status": {
                            "type": [
                              "number",
                              "null"
                            ]
                          },
                          "termsDecodable": {
                            "type": "boolean"
                          },
                          "wellKnownPresent": {
                            "type": "boolean"
                          }
                        },
                        "type": "object"
                      }
                    },
                    "required": [
                      "resource",
                      "score",
                      "flags",
                      "signals"
                    ],
                    "type": "object"
                  },
                  "endpoint": {
                    "description": "Always \"/v1/preflight\".",
                    "type": "string"
                  },
                  "meta": {
                    "properties": {
                      "attribution": {
                        "description": "Licensing attribution when the source requires it.",
                        "type": [
                          "string",
                          "null"
                        ]
                      },
                      "cached": {
                        "description": "Whether this response was served from cache.",
                        "type": "boolean"
                      },
                      "fetchedAt": {
                        "description": "ISO 8601 time the data was actually retrieved from the upstream.",
                        "type": "string"
                      },
                      "source": {
                        "description": "Upstream source: direct probe of the target + Stride20k collector archive.",
                        "type": "string"
                      }
                    },
                    "required": [
                      "source",
                      "cached",
                      "fetchedAt"
                    ],
                    "type": "object"
                  },
                  "ok": {
                    "description": "true on success.",
                    "type": "boolean"
                  }
                },
                "required": [
                  "ok",
                  "endpoint",
                  "data",
                  "meta"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "bazaar"
  ],
  "sourceHost": "gateway.stride20k.com",
  "lastUpdated": "2026-08-30T12:07:00.592Z",
  "quality": {
    "calls30d": 2,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-08-30T12:07:00.227Z"
  },
  "liveness": {},
  "verified": false,
  "featured": false,
  "provider": {
    "host": "gateway.stride20k.com",
    "manifest_name": "gateway.stride20k.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-09-18T22:00:31.484Z"
  }
}