{
  "openapi": "3.0.3",
  "info": {
    "title": "Istruzione Messina Public Tools API",
    "version": "1.0.0",
    "description": "A small date-based angel-number calculator. This is a symbolic calculation, not a factual prediction.\n\nOfficial website: [Istruzione Messina](https://istruzionemessina.it).\n\nNo API key. Per client: burst 10, refill 30/minute. Shared service capacity: burst 20, refill 10/second; at most 8 in flight. Honor Retry-After on HTTP 429/503. POST JSON: maximum 2048 bytes. No automatic retries. Dates are sent in POST bodies, never URL parameters.",
    "contact": {
      "name": "Istruzione Messina",
      "url": "https://istruzionemessina.it"
    }
  },
  "servers": [
    {
      "url": "https://istruzionemessina.it"
    }
  ],
  "security": [],
  "externalDocs": {
    "description": "Usage and limits",
    "url": "https://github.com/Lucernel/public-apis/blob/main/docs/imes.md"
  },
  "paths": {
    "/api/public/v1/angel-number.php": {
      "post": {
        "operationId": "angelNumber",
        "summary": "Date-based angel number",
        "description": "Calculate the date digit root used by the Istruzione Messina calculator.",
        "responses": {
          "200": {
            "description": "Computed result.",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "version": {
                      "type": "string",
                      "enum": [
                        "1"
                      ]
                    },
                    "method": {
                      "type": "string",
                      "enum": [
                        "digit-root-date-v1"
                      ]
                    },
                    "number": {
                      "type": "integer",
                      "minimum": 1,
                      "maximum": 9
                    },
                    "source": {
                      "type": "string",
                      "format": "uri"
                    }
                  },
                  "required": [
                    "version",
                    "method",
                    "number",
                    "source"
                  ],
                  "additionalProperties": false
                }
              }
            }
          },
          "400": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          },
          "405": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          },
          "408": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          },
          "413": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          },
          "414": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          },
          "415": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          },
          "429": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          },
          "500": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          },
          "503": {
            "description": "Request rejected; inspect the HTTP status and error.code.",
            "headers": {
              "Retry-After": {
                "description": "Seconds to wait before a later attempt (429/503).",
                "schema": {
                  "type": "integer",
                  "minimum": 1
                }
              }
            },
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "required": [
                    "error"
                  ],
                  "properties": {
                    "error": {
                      "type": "object",
                      "required": [
                        "code",
                        "message"
                      ],
                      "properties": {
                        "code": {
                          "type": "string"
                        },
                        "message": {
                          "type": "string"
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        },
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "date": {
                    "type": "string",
                    "format": "date",
                    "pattern": "^\\d{4}-\\d{2}-\\d{2}$",
                    "description": "A real calendar date in YYYY-MM-DD. Birth dates: 1900 through today (UTC)."
                  }
                },
                "required": [
                  "date"
                ],
                "additionalProperties": false
              },
              "example": {
                "date": "1990-06-15"
              }
            }
          }
        }
      }
    }
  }
}