{
  "openapi": "3.1.0",
  "info": {
    "title": "CoAuth API",
    "version": "1.0.0",
    "description": "Read-only endpoints backing the CoAuth prior-authorization cockpit. The primary agent interface is WebMCP tools registered in-page; these endpoints serve the seeded patient, payer, and validation data. No authentication is required. Errors are returned as JSON with a stable { error: { code, message, hint } } shape. The API is versioned in this info block; breaking changes will ship under a new path prefix with Deprecation/Sunset headers on the old routes. Canonical routes are versioned under /api/v1. The unversioned /api/* routes remain as deprecated aliases and send Deprecation + Sunset + Link (successor-version) headers.",
    "license": {
      "name": "MIT",
      "url": "https://github.com/lazycheese/coauth/blob/main/LICENSE"
    },
    "contact": {
      "name": "CoAuth",
      "url": "https://github.com/lazycheese/coauth/issues"
    }
  },
  "servers": [
    {
      "url": "https://coauth.vercel.app",
      "description": "Production"
    }
  ],
  "paths": {
    "/api/v1/patient/{id}": {
      "get": {
        "operationId": "getPatient",
        "summary": "Get a patient record",
        "description": "Return the seeded clinical record for a patient id.",
        "parameters": [
          {
            "name": "id",
            "in": "path",
            "required": true,
            "description": "Patient id.",
            "schema": {
              "type": "string",
              "enum": [
                "jane-doe",
                "marcus-lee",
                "ana-torres",
                "priya-raman"
              ]
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Patient record",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Patient"
                }
              }
            }
          },
          "404": {
            "description": "Patient not found",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/payer-rules": {
      "get": {
        "operationId": "getPayerRules",
        "summary": "Get a payer's required fields and policy",
        "description": "Return the required fields and coverage policy for a payer.",
        "parameters": [
          {
            "name": "payer",
            "in": "query",
            "required": true,
            "description": "Payer id.",
            "schema": {
              "type": "string",
              "enum": [
                "uhc",
                "aetna",
                "cigna"
              ]
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Payer rules",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/PayerRules"
                }
              }
            }
          },
          "404": {
            "description": "Payer not found",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    },
    "/api/v1/validate": {
      "post": {
        "operationId": "validateSubmission",
        "summary": "Validate a submission against a payer's rules",
        "description": "Run the rules engine over a set of form fields and return a per-field pass/fail summary.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "properties": {
                  "payer": {
                    "type": "string",
                    "enum": [
                      "uhc",
                      "aetna",
                      "cigna"
                    ]
                  },
                  "formFields": {
                    "type": "object",
                    "additionalProperties": true
                  }
                },
                "required": [
                  "payer",
                  "formFields"
                ]
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Validation summary",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/ValidationSummary"
                }
              }
            }
          },
          "400": {
            "description": "Invalid payer",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/Error"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "Error": {
        "type": "object",
        "description": "Stable JSON error envelope.",
        "properties": {
          "error": {
            "type": "object",
            "properties": {
              "code": {
                "type": "string",
                "description": "Machine-readable error code."
              },
              "message": {
                "type": "string",
                "description": "Human-readable description."
              },
              "hint": {
                "type": "string",
                "description": "How to resolve the error."
              }
            },
            "required": [
              "code",
              "message"
            ]
          }
        },
        "required": [
          "error"
        ]
      },
      "Patient": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "dob": {
            "type": "string",
            "format": "date"
          },
          "memberId": {
            "type": "string"
          },
          "diagnoses": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "code": {
                  "type": "string"
                },
                "label": {
                  "type": "string"
                }
              }
            }
          },
          "medsTried": {
            "type": "array",
            "items": {
              "type": "object"
            }
          },
          "labs": {
            "type": "array",
            "items": {
              "type": "object"
            }
          },
          "clinical": {
            "type": "object"
          }
        },
        "required": [
          "id",
          "name",
          "memberId",
          "diagnoses"
        ]
      },
      "FieldDef": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string"
          },
          "label": {
            "type": "string"
          },
          "type": {
            "type": "string"
          },
          "requiresHumanJudgment": {
            "type": "boolean"
          }
        },
        "required": [
          "id",
          "label",
          "type"
        ]
      },
      "PayerRules": {
        "type": "object",
        "properties": {
          "id": {
            "type": "string"
          },
          "name": {
            "type": "string"
          },
          "drug": {
            "type": "string"
          },
          "policy": {
            "type": "array",
            "items": {
              "type": "string"
            }
          },
          "requiredFields": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/FieldDef"
            }
          }
        },
        "required": [
          "id",
          "name",
          "requiredFields"
        ]
      },
      "ValidationSummary": {
        "type": "object",
        "properties": {
          "failCount": {
            "type": "integer"
          },
          "invalidCount": {
            "type": "integer"
          },
          "judgmentCount": {
            "type": "integer"
          },
          "passCount": {
            "type": "integer"
          },
          "clearForSignature": {
            "type": "boolean"
          },
          "results": {
            "type": "array",
            "items": {
              "type": "object"
            }
          }
        },
        "required": [
          "failCount",
          "clearForSignature"
        ]
      }
    }
  }
}