{
  "openapi": "3.0.3",
  "info": {
    "title": "Murphy's Law Archive API",
    "description": "A public REST API for browsing 1500+ Murphy's Laws, corollaries, and variations organized into thematic categories. No authentication required for read operations.",
    "version": "1.0.0",
    "contact": {
      "url": "https://murphys-laws.com/contact"
    },
    "license": {
      "name": "CC0 1.0",
      "url": "https://creativecommons.org/publicdomain/zero/1.0/"
    },
    "x-llms-txt": "https://murphys-laws.com/llms.txt"
  },
  "servers": [
    {
      "url": "https://murphys-laws.com",
      "description": "Production"
    }
  ],
  "paths": {
    "/api/v1/laws": {
      "post": {
        "operationId": "submitLaw",
        "summary": "Submit a new law",
        "description": "Submit a new law for community review. Rate limited to 5 submissions per hour per IP.",
        "x-ratelimit-limit": 5,
        "x-ratelimit-window": "1h",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "required": [
                  "text"
                ],
                "properties": {
                  "text": {
                    "type": "string",
                    "minLength": 10,
                    "maxLength": 1000
                  },
                  "title": {
                    "type": "string"
                  },
                  "author": {
                    "type": "string"
                  },
                  "email": {
                    "type": "string",
                    "format": "email"
                  },
                  "category_id": {
                    "type": "integer"
                  }
                }
              }
            }
          }
        },
        "responses": {
          "201": {
            "description": "Law submitted successfully and pending review",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "id": {
                      "type": "integer"
                    },
                    "title": {
                      "type": "string",
                      "nullable": true
                    },
                    "text": {
                      "type": "string"
                    },
                    "status": {
                      "type": "string",
                      "enum": [
                        "in_review"
                      ]
                    },
                    "message": {
                      "type": "string"
                    }
                  }
                }
              }
            }
          },
          "400": {
            "description": "Validation error",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorResponse"
                }
              }
            }
          },
          "429": {
            "description": "Rate limit exceeded",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorResponse"
                }
              }
            }
          }
        }
      },
      "get": {
        "operationId": "listLaws",
        "summary": "List laws",
        "description": "Returns a paginated, filterable, sortable list of published laws.",
        "parameters": [
          {
            "name": "limit",
            "in": "query",
            "description": "Number of results per page (1–25)",
            "schema": {
              "type": "integer",
              "minimum": 1,
              "maximum": 25,
              "default": 25
            }
          },
          {
            "name": "offset",
            "in": "query",
            "description": "Zero-based offset for pagination",
            "schema": {
              "type": "integer",
              "minimum": 0,
              "default": 0
            }
          },
          {
            "name": "q",
            "in": "query",
            "description": "Full-text search query",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "category_slug",
            "in": "query",
            "description": "Filter by category slug (e.g. \"murphys-technology-laws\")",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "category_id",
            "in": "query",
            "description": "Filter by numeric category ID",
            "schema": {
              "type": "integer"
            }
          },
          {
            "name": "attribution",
            "in": "query",
            "description": "Partial match on attribution name",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "sort",
            "in": "query",
            "description": "Sort field",
            "schema": {
              "type": "string",
              "enum": [
                "score",
                "upvotes",
                "created_at",
                "last_voted_at"
              ],
              "default": "score"
            }
          },
          {
            "name": "order",
            "in": "query",
            "description": "Sort direction",
            "schema": {
              "type": "string",
              "enum": [
                "asc",
                "desc"
              ],
              "default": "desc"
            }
          },
          {
            "name": "exclude_corollaries",
            "in": "query",
            "description": "Exclude corollary laws (1 or true)",
            "schema": {
              "type": "string",
              "enum": [
                "1",
                "true"
              ]
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Paginated list of laws",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/LawList"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/laws/random": {
      "get": {
        "operationId": "getRandomLaw",
        "summary": "Get a random law",
        "description": "Returns a single randomly selected published law. Each call returns a fresh result.",
        "responses": {
          "200": {
            "description": "A randomly selected law",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Law"
                }
              }
            }
          },
          "404": {
            "description": "No published laws available",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorResponse"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/laws/suggestions": {
      "get": {
        "operationId": "getLawSuggestions",
        "summary": "Autocomplete suggestions",
        "description": "Returns up to 20 matching law snippets for autocomplete.",
        "parameters": [
          {
            "name": "q",
            "in": "query",
            "required": true,
            "description": "Search query (minimum 2 characters)",
            "schema": {
              "type": "string",
              "minLength": 2
            }
          },
          {
            "name": "limit",
            "in": "query",
            "description": "Maximum number of suggestions (1–20)",
            "schema": {
              "type": "integer",
              "minimum": 1,
              "maximum": 20,
              "default": 10
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Autocomplete suggestions",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "data": {
                      "type": "array",
                      "items": {
                        "type": "object",
                        "properties": {
                          "id": {
                            "type": "integer"
                          },
                          "text": {
                            "type": "string"
                          },
                          "title": {
                            "type": "string",
                            "nullable": true
                          },
                          "score": {
                            "type": "integer"
                          }
                        }
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/laws/{id}": {
      "get": {
        "operationId": "getLaw",
        "summary": "Get a law by ID",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "schema": {
              "type": "integer"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "The requested law",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Law"
                }
              }
            }
          },
          "400": {
            "description": "Invalid law ID",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorResponse"
                }
              }
            }
          },
          "404": {
            "description": "Law not found",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorResponse"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/laws/{id}/related": {
      "get": {
        "operationId": "getRelatedLaws",
        "summary": "Get related laws",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "schema": {
              "type": "integer"
            }
          },
          {
            "name": "limit",
            "in": "query",
            "description": "Maximum number of related laws (1–10)",
            "schema": {
              "type": "integer",
              "minimum": 1,
              "maximum": 10,
              "default": 5
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Related laws",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "data": {
                      "type": "array",
                      "items": {
                        "$ref": "#/components/schemas/Law"
                      }
                    },
                    "law_id": {
                      "type": "integer"
                    }
                  }
                }
              }
            }
          },
          "404": {
            "description": "Law not found",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorResponse"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/law-of-day": {
      "get": {
        "operationId": "getLawOfTheDay",
        "summary": "Get today's featured law",
        "responses": {
          "200": {
            "description": "Today's law of the day",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "law": {
                      "$ref": "#/components/schemas/Law"
                    },
                    "featured_date": {
                      "type": "string",
                      "format": "date"
                    }
                  }
                }
              }
            }
          },
          "404": {
            "description": "No published laws available",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorResponse"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/categories": {
      "get": {
        "operationId": "listCategories",
        "summary": "List all categories",
        "responses": {
          "200": {
            "description": "All categories with law counts",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "data": {
                      "type": "array",
                      "items": {
                        "$ref": "#/components/schemas/Category"
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/categories/{id}": {
      "get": {
        "operationId": "getCategory",
        "summary": "Get a category by ID",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "schema": {
              "type": "integer"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "The requested category",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Category"
                }
              }
            }
          },
          "404": {
            "description": "Category not found",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ErrorResponse"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/attributions": {
      "get": {
        "operationId": "listAttributions",
        "summary": "List unique attribution names",
        "responses": {
          "200": {
            "description": "List of unique attribution names",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "data": {
                      "type": "array",
                      "items": {
                        "type": "string"
                      }
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/feed.rss": {
      "get": {
        "operationId": "getRssFeed",
        "summary": "RSS 2.0 feed",
        "responses": {
          "200": {
            "description": "RSS feed of recent laws",
            "content": {
              "application/rss+xml": {
                "schema": {
                  "type": "string"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/feed.atom": {
      "get": {
        "operationId": "getAtomFeed",
        "summary": "Atom 1.0 feed",
        "responses": {
          "200": {
            "description": "Atom feed of recent laws",
            "content": {
              "application/atom+xml": {
                "schema": {
                  "type": "string"
                }
              }
            }
          }
        }
      }
    },
    "/api/health": {
      "get": {
        "operationId": "healthCheck",
        "summary": "Health check",
        "responses": {
          "200": {
            "description": "Server is healthy",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "status": {
                      "type": "string",
                      "enum": [
                        "ok"
                      ]
                    },
                    "db_query_ms": {
                      "type": "number"
                    }
                  }
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "Attribution": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "note": {
            "type": "string",
            "nullable": true
          }
        }
      },
      "Law": {
        "type": "object",
        "properties": {
          "id": {
            "type": "integer"
          },
          "title": {
            "type": "string",
            "nullable": true
          },
          "text": {
            "type": "string"
          },
          "file_path": {
            "type": "string",
            "nullable": true
          },
          "line_number": {
            "type": "integer",
            "nullable": true
          },
          "attributions": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/Attribution"
            }
          },
          "upvotes": {
            "type": "integer"
          },
          "downvotes": {
            "type": "integer"
          },
          "score": {
            "type": "integer"
          },
          "category_id": {
            "type": "integer",
            "nullable": true
          },
          "category_ids": {
            "type": "array",
            "items": {
              "type": "integer"
            }
          },
          "category_slug": {
            "type": "string",
            "nullable": true
          },
          "category_name": {
            "type": "string",
            "nullable": true
          }
        }
      },
      "LawList": {
        "type": "object",
        "properties": {
          "data": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/Law"
            }
          },
          "total": {
            "type": "integer"
          },
          "limit": {
            "type": "integer"
          },
          "offset": {
            "type": "integer"
          },
          "q": {
            "type": "string"
          },
          "category_id": {
            "type": "integer",
            "nullable": true
          },
          "category_slug": {
            "type": "string",
            "nullable": true
          },
          "attribution": {
            "type": "string"
          },
          "sort": {
            "type": "string"
          },
          "order": {
            "type": "string"
          }
        }
      },
      "Category": {
        "type": "object",
        "properties": {
          "id": {
            "type": "integer"
          },
          "slug": {
            "type": "string"
          },
          "title": {
            "type": "string"
          },
          "description": {
            "type": "string",
            "nullable": true
          },
          "law_count": {
            "type": "integer"
          }
        }
      },
      "ErrorResponse": {
        "type": "object",
        "properties": {
          "error": {
            "type": "string"
          }
        }
      }
    }
  }
}