{
  "openapi": "3.1.0",
  "info": {
    "title": "PillFYI API",
    "description": "Public API for PillFYI \u2014 a consumer medication information database with drugs, drug classes, conditions, side effects, manufacturers, and drug-drug interaction data sourced from DailyMed, openFDA, RxNorm, MFDS, and DDinter.",
    "version": "1.0.0",
    "contact": {
      "url": "https://pillfyi.com/developers/"
    }
  },
  "servers": [
    {
      "url": "https://pillfyi.com",
      "description": "Production"
    }
  ],
  "paths": {
    "/api/v1/drugs/": {
      "get": {
        "operationId": "listDrugs",
        "summary": "List all active drugs (paginated)",
        "parameters": [
          {
            "name": "page",
            "in": "query",
            "description": "Page number (default: 1)",
            "schema": {
              "type": "integer",
              "default": 1,
              "minimum": 1
            }
          },
          {
            "name": "per_page",
            "in": "query",
            "description": "Results per page (default: 20, max: 100)",
            "schema": {
              "type": "integer",
              "default": 20,
              "minimum": 1,
              "maximum": 100
            }
          },
          {
            "name": "type",
            "in": "query",
            "description": "Filter by drug type (prescription, otc, behind_counter)",
            "schema": {
              "type": "string"
            }
          },
          {
            "name": "form",
            "in": "query",
            "description": "Filter by dosage form (tablet, capsule, liquid, etc.)",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Paginated list of drugs"
          }
        }
      }
    },
    "/api/v1/drugs/{slug}/": {
      "get": {
        "operationId": "getDrug",
        "summary": "Get full drug detail with clinical info, side effects, conditions",
        "parameters": [
          {
            "name": "slug",
            "in": "path",
            "required": true,
            "description": "URL slug of the drug",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Drug detail"
          },
          "404": {
            "description": "Not found"
          }
        }
      }
    },
    "/api/v1/drug-classes/": {
      "get": {
        "operationId": "listDrugClasses",
        "summary": "List all drug classes (ATC classification)",
        "parameters": [
          {
            "name": "page",
            "in": "query",
            "description": "Page number (default: 1)",
            "schema": {
              "type": "integer",
              "default": 1,
              "minimum": 1
            }
          },
          {
            "name": "per_page",
            "in": "query",
            "description": "Results per page (default: 20, max: 100)",
            "schema": {
              "type": "integer",
              "default": 20,
              "minimum": 1,
              "maximum": 100
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Paginated list of drug classes"
          }
        }
      }
    },
    "/api/v1/drug-classes/{slug}/": {
      "get": {
        "operationId": "getDrugClass",
        "summary": "Get drug class detail with child classes and drugs",
        "parameters": [
          {
            "name": "slug",
            "in": "path",
            "required": true,
            "description": "URL slug of the drug class",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Drug class detail"
          },
          "404": {
            "description": "Not found"
          }
        }
      }
    },
    "/api/v1/conditions/": {
      "get": {
        "operationId": "listConditions",
        "summary": "List all medical conditions",
        "parameters": [
          {
            "name": "page",
            "in": "query",
            "description": "Page number (default: 1)",
            "schema": {
              "type": "integer",
              "default": 1,
              "minimum": 1
            }
          },
          {
            "name": "per_page",
            "in": "query",
            "description": "Results per page (default: 20, max: 100)",
            "schema": {
              "type": "integer",
              "default": 20,
              "minimum": 1,
              "maximum": 100
            }
          },
          {
            "name": "body_system",
            "in": "query",
            "description": "Filter by body system",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Paginated list of conditions"
          }
        }
      }
    },
    "/api/v1/conditions/{slug}/": {
      "get": {
        "operationId": "getCondition",
        "summary": "Get condition detail with approved drugs",
        "parameters": [
          {
            "name": "slug",
            "in": "path",
            "required": true,
            "description": "URL slug of the condition",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Condition detail"
          },
          "404": {
            "description": "Not found"
          }
        }
      }
    },
    "/api/v1/side-effects/": {
      "get": {
        "operationId": "listSideEffects",
        "summary": "List all known side effects",
        "parameters": [
          {
            "name": "page",
            "in": "query",
            "description": "Page number (default: 1)",
            "schema": {
              "type": "integer",
              "default": 1,
              "minimum": 1
            }
          },
          {
            "name": "per_page",
            "in": "query",
            "description": "Results per page (default: 20, max: 100)",
            "schema": {
              "type": "integer",
              "default": 20,
              "minimum": 1,
              "maximum": 100
            }
          },
          {
            "name": "body_system",
            "in": "query",
            "description": "Filter by body system",
            "schema": {
              "type": "string"
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Paginated list of side effects"
          }
        }
      }
    },
    "/api/v1/manufacturers/": {
      "get": {
        "operationId": "listManufacturers",
        "summary": "List all pharmaceutical manufacturers",
        "parameters": [
          {
            "name": "page",
            "in": "query",
            "description": "Page number (default: 1)",
            "schema": {
              "type": "integer",
              "default": 1,
              "minimum": 1
            }
          },
          {
            "name": "per_page",
            "in": "query",
            "description": "Results per page (default: 20, max: 100)",
            "schema": {
              "type": "integer",
              "default": 20,
              "minimum": 1,
              "maximum": 100
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Paginated list of manufacturers"
          }
        }
      }
    },
    "/api/v1/search/": {
      "get": {
        "operationId": "search",
        "summary": "Search across drugs, conditions, side effects, and drug classes",
        "parameters": [
          {
            "name": "q",
            "in": "query",
            "required": true,
            "description": "Search query (minimum 2 characters)",
            "schema": {
              "type": "string",
              "minLength": 2
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Search results",
            "content": {
              "application/json": {
                "schema": {
                  "type": "object",
                  "properties": {
                    "results": {
                      "type": "array",
                      "items": {
                        "$ref": "#/components/schemas/SearchResult"
                      }
                    },
                    "total": {
                      "type": "integer"
                    }
                  }
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/interaction-check/": {
      "get": {
        "operationId": "interactionCheck",
        "summary": "Check drug-drug interactions for 2-10 drugs",
        "parameters": [
          {
            "name": "drugs",
            "in": "query",
            "required": true,
            "description": "Drug slugs (repeat parameter for multiple drugs)",
            "schema": {
              "type": "array",
              "items": {
                "type": "string"
              }
            }
          }
        ],
        "responses": {
          "200": {
            "description": "List of found interactions"
          }
        }
      }
    },
    "/api/v1/openapi.json": {
      "get": {
        "operationId": "getOpenAPISpec",
        "summary": "OpenAPI 3.1.0 specification",
        "responses": {
          "200": {
            "description": "OpenAPI JSON spec"
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "SearchResult": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "slug": {
            "type": "string"
          },
          "type": {
            "type": "string",
            "enum": [
              "drug",
              "condition",
              "side_effect",
              "drug_class"
            ]
          },
          "url": {
            "type": "string"
          }
        },
        "required": [
          "name",
          "slug",
          "type",
          "url"
        ]
      }
    }
  }
}