{
  "x402Version": 2,
  "id": 31430,
  "slug": "31430",
  "resource": "https://myc-staging.crescadia.com/v1/paid/products/:product_event_id",
  "description": "Detect economically material changes to SAM.gov federal contract opportunities, including deadline moves, solicitation amendments, attachment changes, set-aside, NAICS, status, and award changes. Returns an immutable before/after delta with materiality, reason codes, and provenance for procurement and capture agents.",
  "type": "http",
  "serviceName": "MYC Federal Contract Changes",
  "resourceType": "Market Data",
  "accepts": [
    {
      "scheme": "exact",
      "network": "eip155:8453",
      "payTo": "0xc54cAF5be3660c0558700B7a64103904eC9c861C",
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "amount": "10000",
      "amountUsd": 0.01,
      "maxTimeoutSeconds": 300
    }
  ],
  "outputSchema": {
    "properties": {
      "example": {
        "properties": {
          "changed": {
            "type": "boolean"
          },
          "confidence": {
            "type": "number"
          },
          "event_count": {
            "type": "integer"
          },
          "events": {
            "items": {
              "properties": {
                "current": {},
                "event": {
                  "type": "string"
                },
                "field": {
                  "type": "string"
                },
                "materiality": {
                  "type": "number"
                },
                "previous": {},
                "reason": {
                  "type": "string"
                }
              },
              "required": [
                "field",
                "event",
                "materiality",
                "reason"
              ],
              "type": "object"
            },
            "type": "array"
          },
          "material_changed": {
            "type": "boolean"
          },
          "material_event_count": {
            "type": "integer"
          },
          "notice_id": {
            "type": "string"
          },
          "product": {
            "properties": {
              "event_digest": {
                "type": "string"
              },
              "price": {
                "properties": {
                  "amount": {
                    "type": "string"
                  },
                  "currency": {
                    "type": "string"
                  }
                },
                "required": [
                  "amount",
                  "currency"
                ],
                "type": "object"
              },
              "product_event_id": {
                "type": "string"
              },
              "product_id": {
                "type": "string"
              },
              "product_version": {
                "type": "string"
              }
            },
            "required": [
              "product_event_id",
              "product_id",
              "product_version",
              "event_digest",
              "price"
            ],
            "type": "object"
          },
          "provenance": {
            "type": "object"
          },
          "source": {
            "type": "string"
          }
        },
        "required": [
          "notice_id",
          "changed",
          "material_changed",
          "event_count",
          "material_event_count",
          "events",
          "source",
          "confidence",
          "provenance",
          "product"
        ],
        "type": "object"
      },
      "type": {
        "type": "string"
      }
    },
    "required": [
      "type"
    ],
    "type": "object"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "method": "GET",
          "pathParams": {
            "product_event_id": "product_5b0221871e05ed90476245bc0d55484f"
          },
          "type": "http"
        },
        "output": {
          "example": {
            "changed": true,
            "confidence": 1,
            "event_count": 1,
            "events": [
              {
                "current": [
                  "https://sam.gov/example/attachment-v2"
                ],
                "event": "attachments_changed",
                "field": "resource_links",
                "materiality": 0.85,
                "previous": [
                  "https://sam.gov/example/attachment-v1"
                ],
                "reason": "Attachment/resource changes may alter requirements."
              }
            ],
            "material_changed": true,
            "material_event_count": 1,
            "notice_id": "example-notice-id",
            "product": {
              "event_digest": "example",
              "price": {
                "amount": "0.01",
                "currency": "USD"
              },
              "product_event_id": "product_example",
              "product_id": "federal_opportunity.delta",
              "product_version": "1"
            },
            "provenance": {
              "materiality_threshold": 0.65,
              "source": "SAM.gov"
            },
            "source": "SAM.gov"
          },
          "type": "json"
        }
      },
      "routeTemplate": "/v1/paid/products/:product_event_id",
      "schema": {
        "$schema": "https://json-schema.org/draft/2020-12/schema",
        "properties": {
          "input": {
            "additionalProperties": false,
            "properties": {
              "method": {
                "enum": [
                  "GET",
                  "HEAD",
                  "DELETE"
                ],
                "type": "string"
              },
              "pathParams": {
                "properties": {
                  "product_event_id": {
                    "description": "Immutable MYC priced product event identifier.",
                    "type": "string"
                  }
                },
                "required": [
                  "product_event_id"
                ],
                "type": "object"
              },
              "queryParams": {
                "properties": {},
                "type": "object"
              },
              "type": {
                "const": "http",
                "type": "string"
              }
            },
            "required": [
              "type",
              "method"
            ],
            "type": "object"
          },
          "output": {
            "properties": {
              "example": {
                "properties": {
                  "changed": {
                    "type": "boolean"
                  },
                  "confidence": {
                    "type": "number"
                  },
                  "event_count": {
                    "type": "integer"
                  },
                  "events": {
                    "items": {
                      "properties": {
                        "current": {},
                        "event": {
                          "type": "string"
                        },
                        "field": {
                          "type": "string"
                        },
                        "materiality": {
                          "type": "number"
                        },
                        "previous": {},
                        "reason": {
                          "type": "string"
                        }
                      },
                      "required": [
                        "field",
                        "event",
                        "materiality",
                        "reason"
                      ],
                      "type": "object"
                    },
                    "type": "array"
                  },
                  "material_changed": {
                    "type": "boolean"
                  },
                  "material_event_count": {
                    "type": "integer"
                  },
                  "notice_id": {
                    "type": "string"
                  },
                  "product": {
                    "properties": {
                      "event_digest": {
                        "type": "string"
                      },
                      "price": {
                        "properties": {
                          "amount": {
                            "type": "string"
                          },
                          "currency": {
                            "type": "string"
                          }
                        },
                        "required": [
                          "amount",
                          "currency"
                        ],
                        "type": "object"
                      },
                      "product_event_id": {
                        "type": "string"
                      },
                      "product_id": {
                        "type": "string"
                      },
                      "product_version": {
                        "type": "string"
                      }
                    },
                    "required": [
                      "product_event_id",
                      "product_id",
                      "product_version",
                      "event_digest",
                      "price"
                    ],
                    "type": "object"
                  },
                  "provenance": {
                    "type": "object"
                  },
                  "source": {
                    "type": "string"
                  }
                },
                "required": [
                  "notice_id",
                  "changed",
                  "material_changed",
                  "event_count",
                  "material_event_count",
                  "events",
                  "source",
                  "confidence",
                  "provenance",
                  "product"
                ],
                "type": "object"
              },
              "type": {
                "type": "string"
              }
            },
            "required": [
              "type"
            ],
            "type": "object"
          }
        },
        "required": [
          "input"
        ],
        "type": "object"
      }
    }
  },
  "tags": [
    "sam-gov",
    "federal-contracts",
    "contract-changes",
    "procurement",
    "solicitation-amendments",
    "bazaar"
  ],
  "sourceHost": "myc-staging.crescadia.com",
  "lastUpdated": "2026-09-17T05:02:23.708Z",
  "quality": {
    "calls30d": 2,
    "uniquePayers30d": 1,
    "lastCalledAt": "2026-09-17T05:02:23.297Z"
  },
  "metadata": {
    "serviceName": "MYC Federal Contract Changes",
    "extensions": {
      "bazaar": {
        "info": {
          "input": {
            "method": "GET",
            "pathParams": {
              "product_event_id": "product_5b0221871e05ed90476245bc0d55484f"
            },
            "type": "http"
          },
          "output": {
            "example": {
              "changed": true,
              "confidence": 1,
              "event_count": 1,
              "events": [
                {
                  "current": [
                    "https://sam.gov/example/attachment-v2"
                  ],
                  "event": "attachments_changed",
                  "field": "resource_links",
                  "materiality": 0.85,
                  "previous": [
                    "https://sam.gov/example/attachment-v1"
                  ],
                  "reason": "Attachment/resource changes may alter requirements."
                }
              ],
              "material_changed": true,
              "material_event_count": 1,
              "notice_id": "example-notice-id",
              "product": {
                "event_digest": "example",
                "price": {
                  "amount": "0.01",
                  "currency": "USD"
                },
                "product_event_id": "product_example",
                "product_id": "federal_opportunity.delta",
                "product_version": "1"
              },
              "provenance": {
                "materiality_threshold": 0.65,
                "source": "SAM.gov"
              },
              "source": "SAM.gov"
            },
            "type": "json"
          }
        },
        "routeTemplate": "/v1/paid/products/:product_event_id",
        "schema": {
          "$schema": "https://json-schema.org/draft/2020-12/schema",
          "properties": {
            "input": {
              "additionalProperties": false,
              "properties": {
                "method": {
                  "enum": [
                    "GET",
                    "HEAD",
                    "DELETE"
                  ],
                  "type": "string"
                },
                "pathParams": {
                  "properties": {
                    "product_event_id": {
                      "description": "Immutable MYC priced product event identifier.",
                      "type": "string"
                    }
                  },
                  "required": [
                    "product_event_id"
                  ],
                  "type": "object"
                },
                "queryParams": {
                  "properties": {},
                  "type": "object"
                },
                "type": {
                  "const": "http",
                  "type": "string"
                }
              },
              "required": [
                "type",
                "method"
              ],
              "type": "object"
            },
            "output": {
              "properties": {
                "example": {
                  "properties": {
                    "changed": {
                      "type": "boolean"
                    },
                    "confidence": {
                      "type": "number"
                    },
                    "event_count": {
                      "type": "integer"
                    },
                    "events": {
                      "items": {
                        "properties": {
                          "current": {},
                          "event": {
                            "type": "string"
                          },
                          "field": {
                            "type": "string"
                          },
                          "materiality": {
                            "type": "number"
                          },
                          "previous": {},
                          "reason": {
                            "type": "string"
                          }
                        },
                        "required": [
                          "field",
                          "event",
                          "materiality",
                          "reason"
                        ],
                        "type": "object"
                      },
                      "type": "array"
                    },
                    "material_changed": {
                      "type": "boolean"
                    },
                    "material_event_count": {
                      "type": "integer"
                    },
                    "notice_id": {
                      "type": "string"
                    },
                    "product": {
                      "properties": {
                        "event_digest": {
                          "type": "string"
                        },
                        "price": {
                          "properties": {
                            "amount": {
                              "type": "string"
                            },
                            "currency": {
                              "type": "string"
                            }
                          },
                          "required": [
                            "amount",
                            "currency"
                          ],
                          "type": "object"
                        },
                        "product_event_id": {
                          "type": "string"
                        },
                        "product_id": {
                          "type": "string"
                        },
                        "product_version": {
                          "type": "string"
                        }
                      },
                      "required": [
                        "product_event_id",
                        "product_id",
                        "product_version",
                        "event_digest",
                        "price"
                      ],
                      "type": "object"
                    },
                    "provenance": {
                      "type": "object"
                    },
                    "source": {
                      "type": "string"
                    }
                  },
                  "required": [
                    "notice_id",
                    "changed",
                    "material_changed",
                    "event_count",
                    "material_event_count",
                    "events",
                    "source",
                    "confidence",
                    "provenance",
                    "product"
                  ],
                  "type": "object"
                },
                "type": {
                  "type": "string"
                }
              },
              "required": [
                "type"
              ],
              "type": "object"
            }
          },
          "required": [
            "input"
          ],
          "type": "object"
        }
      }
    }
  },
  "liveness": {
    "reliability": null
  },
  "verified": false,
  "featured": false,
  "provider": {
    "host": "myc-staging.crescadia.com",
    "manifest_name": "myc-staging.crescadia.com",
    "source": "cdp-mirror",
    "source_manifest_url": "https://api.cdp.coinbase.com/platform/v2/x402/discovery/resources",
    "submitted_at": "2026-10-14T01:15:01.050Z"
  },
  "exampleResponse": {
    "changed": true,
    "confidence": 1,
    "event_count": 1,
    "events": [
      {
        "current": [
          "https://sam.gov/example/attachment-v2"
        ],
        "event": "attachments_changed",
        "field": "resource_links",
        "materiality": 0.85,
        "previous": [
          "https://sam.gov/example/attachment-v1"
        ],
        "reason": "Attachment/resource changes may alter requirements."
      }
    ],
    "material_changed": true,
    "material_event_count": 1,
    "notice_id": "example-notice-id",
    "product": {
      "event_digest": "example",
      "price": {
        "amount": "0.01",
        "currency": "USD"
      },
      "product_event_id": "product_example",
      "product_id": "federal_opportunity.delta",
      "product_version": "1"
    },
    "provenance": {
      "materiality_threshold": 0.65,
      "source": "SAM.gov"
    },
    "source": "SAM.gov"
  }
}