ToolAssay

See which parameters and request bodies changed obligation between two OpenAPI d

See which parameters and request bodies changed obligation between two OpenAPI documents. Separates tightening, where an existing caller now fails, from loosening, where a handler may now receive nothing it previously could not. A path parameter is treated as required whatever the document says, so moving one between optional and required is not reported as a change.

Not tested: has real-world effectsour last check, 2026-10-04
0 of 0checks answered this week
n/amedian answer time
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Endpoint

POST https://api.zfinia.com/x402/v1/openapi-required-parameter-drift

CategoryEverything else
Provider hostapi.zfinia.com
Networkseip155:8453
Payment schemesexact
Self-reported calls, 30 days1 from 1 payers (the provider's figure, not ours)

Our checks, last 30 days

We never call tools that send, buy, move money or file anything, not even without paying.

Example input (from the provider)

{
  "body": {
    "after": {
      "components": {
        "schemas": {
          "Order": {
            "properties": {
              "id": {
                "type": "string"
              },
              "status": {
                "enum": [
                  "open",
                  "shipped",
                  "disputed"
                ],
                "type": "string"
              },
              "tenant_id": {
                "type": "string"
              },
              "total": {
                "type": "number"
              }
            },
            "required": [
              "id",
              "total",
              "tenant_id"
            ],
            "type": "object"
          }
        },
        "securitySchemes": {
          "apiKey": {
            "in": "query",
            "name": "api_key",
            "type": "apiKey"
          }
        }
      },
      "info": {
        "title": "Orders API",
        "version": "2.0.0"
      },
      "openapi": "3.1.0",
      "paths": {
        "/orders": {
          "get": {
            "operationId": "listOrdersV2",
            "parameters": [
              {
                "in": "query",
                "name": "tenant",
                "required": true,
                "schema": {
                  "type": "string"
                }
              }
            ],
            "responses": {
              "200": {
                "content": {
                  "application/json": {
                    "schema": {
                      "items": {
                        "$ref": "#/components/schemas/Order"
                      },
                      "type": "array"
                    }
                  }
                },
                "description": "A page of orders"
              }
            },
            "summary": "List orders"
          },
          "parameters": [
            {
              "in": "query",
              "name": "page",
              "schema": {
                "minimum": 1,
                "type": "integer"
              }
            }
          ],
          "post": {
            "operationId": "createOrder",
            "requestBody": {
              "content": {
                "application/json": {
                  "schema": {
                    "$ref": "#/components/schemas/Order"
                  }
                }
              },
              "required": true
            },
            "responses": {
              "201": {
                "content": {
                  "application/json": {
                    "schema": {
                      "$ref": "#/components/schemas/Order"
                    }
                  }
                },
                "description": "Created"
              }
            },
            "summary": "Create an order"
          }
        },
        "/orders/{id}": {
          "get": {
            "deprecated": true,
            "operationId": "getOrder",
            "parameters": [
              {
                "in": "path",
                "name": "id",
                "schema": {
                  "type": "string"
                }
              }
            ],
            "responses": {
              "200": {
                "content": {
                  "application/json": {
                    "schema": {
                      "$ref": "#/components/schemas/Order"
                    }
                  }
                },
                "description": "The order"
              },
              "404": {
                "description": "Not found"
              }
            },
            "summary": "Fetch one order"
          }
        }
      },
      "security": [
        {
          "apiKey": []
        }
      ]
    },
    "before": {
      "components": {
        "schemas": {
          "Order": {
            "properties": {
              "id": {
                "type": "string"
              },
              "legacy_ref": {
                "type": "string"
              },
              "status": {
                "enum": [
                  "open",
                  "shipped"
                ],
                "type": "string"
              },
              "total": {
                "type": "number"
              }
            },
            "required": [
              "id",
              "total"
            ],
            "type": "object"
          }
        },
        "securitySchemes": {
          "apiKey": {
            "in": "header",
            "name": "X-Api-Key",
            "type": "apiKey"
          }
        }
      },
      "info": {
        "title": "Orders API",
        "version": "1.4.0"
      },
      "openapi": "3.1.0",
      "paths": {
        "/legacy/export": {
          "get": {
            "operationId": "legacyExport",
            "responses": {
              "200": {
                "description": "A CSV export"
              }
            },
            "summary": "Legacy export"
          }
        },
        "/orders": {
          "get": {
            "operationId": "listOrders",
            "responses": {
              "200": {
                "content": {
                  "application/json": {
                    "schema": {
                      "items": {
                        "$ref": "#/components/schemas/Order"
                      },
                      "type": "array"
                    }
                  }
                },
                "description": "A page of orders"
              },
              "429": {
                "description": "Rate limited"
              }
            },
            "summary": "List orders"
          },
          "parameters": [
            {
              "in": "query",
              "name": "page",
              "schema": {
                "minimum": 1,
                "type": "integer"
              }
            }
          ],
          "post": {
            "operationId": "createOrder",
            "requestBody": {
              "content": {
                "application/json": {
                  "schema": {
                    "$ref": "#/components/schemas/Order"
                  }
                }
              }
            },
            "responses": {
              "201": {
                "content": {
                  "application/json": {
                    "schema": {
                      "$ref": "#/components/schemas/Order"
                    }
                  }
                },
                "description": "Created"
              }
            },
            "summary": "Create an order"
          }
        },
        "/orders/{id}": {
          "get": {
            "operationId": "getOrder",
            "parameters": [
              {
                "in": "path",
                "name": "id",
                "schema": {
                  "type": "string"
                }
              }
            ],
            "responses": {
              "200": {
                "content": {
                  "application/json": {
                    "schema": {
                      "$ref": "#/components/schemas/Order"
                    }
                  }
                },
                "description": "The order"
              },
              "404": {
                "description": "Not found"
              }
            },
            "summary": "Fetch one order"
          }
        }
      },
      "security": [
        {
          "apiKey": []
        }
      ]
    }
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "body": {
          "additionalProperties": false,
          "properties": {
            "after": {
              "type": "object"
            },
            "before": {
              "type": "object"
            }
          },
          "required": [
            "before",
            "after"
          ],
          "type": "object"
        },
        "bodyType": {
          "enum": [
            "json",
            "form-data",
            "text"
          ],
          "type": "string"
        },
        "method": {
          "enum": [
            "POST"
          ],
          "type": "string"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method",
        "bodyType",
        "body"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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