{
  "openapi": "3.1.0",
  "info": {
    "title": "Hallucination Hunter Verification & Fact-Check Database API",
    "description": "Verify LLM outputs claim by claim against established knowledge, live web sources, and the shared Hallucination Hunter Supabase Postgres database.",
    "version": "1.2.0"
  },
  "servers": [
    {
      "url": "https://hallucination-hunter-five.vercel.app",
      "description": "Production Vercel Edge & Serverless deployment"
    }
  ],
  "paths": {
    "/api/verify": {
      "post": {
        "operationId": "verifyLlmResponse",
        "summary": "Verify factual claims in an LLM draft or passage and sync to database",
        "description": "Breaks text into atomic factual claims, checks each claim, resolves live web URLs, syncs results to the Hallucination Hunter database, and returns verdicts plus markdownReport.",
        "requestBody": {
          "required": true,
          "content": {
            "application/json": {
              "schema": {
                "type": "object",
                "required": ["text"],
                "properties": {
                  "text": {
                    "type": "string",
                    "description": "Factual passage or draft LLM answer to verify (15 to 20,000 characters)."
                  },
                  "client": {
                    "type": "string",
                    "default": "chatgpt",
                    "description": "Identifier of the calling LLM assistant (e.g. chatgpt, claude, antigravity)."
                  },
                  "saveToDatabase": {
                    "type": "boolean",
                    "default": true,
                    "description": "Persist verified claims to the Hallucination Hunter Supabase database."
                  },
                  "enrichSources": {
                    "type": "boolean",
                    "default": true,
                    "description": "Resolve live authoritative web URLs for extracted claims."
                  }
                }
              }
            }
          }
        },
        "responses": {
          "200": {
            "description": "Structured verification report and Markdown footer",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/VerifyResponse"
                }
              }
            }
          }
        }
      },
      "get": {
        "operationId": "searchFactCheckDatabase",
        "summary": "Search previously verified and false claims in the Hallucination Hunter database",
        "description": "Queries the Supabase Postgres ledger of checked claims and cited sources by keyword, or returns recent checks and totals when search is omitted.",
        "parameters": [
          {
            "name": "search",
            "in": "query",
            "required": false,
            "description": "Keyword, entity, or claim text to search in the database.",
            "schema": { "type": "string" }
          },
          {
            "name": "status",
            "in": "query",
            "required": false,
            "description": "Optional verdict filter (verified, unverifiable, false).",
            "schema": {
              "type": "string",
              "enum": ["verified", "unverifiable", "false"]
            }
          },
          {
            "name": "limit",
            "in": "query",
            "required": false,
            "description": "Maximum records to return (1 to 30).",
            "schema": {
              "type": "integer",
              "default": 10
            }
          }
        ],
        "responses": {
          "200": {
            "description": "Matching claims or recent database checks",
            "content": {
              "application/json": {
                "schema": {
                  "$ref": "#/components/schemas/DatabaseSearchResponse"
                }
              }
            }
          }
        }
      }
    }
  },
  "components": {
    "schemas": {
      "VerifyResponse": {
        "type": "object",
        "properties": {
          "ok": { "type": "boolean" },
          "client": { "type": "string" },
          "analysisId": { "type": ["string", "null"] },
          "savedToDatabase": { "type": "boolean" },
          "inspectUrl": { "type": "string" },
          "markdownReport": {
            "type": "string",
            "description": "Ready-to-append Markdown verification block to display directly below your answer."
          },
          "verdict": {
            "type": "object",
            "properties": {
              "label": { "type": "string" },
              "title": { "type": "string" },
              "band": { "type": "string" },
              "trustScore": { "type": ["integer", "null"] },
              "unverifiedOnly": { "type": "boolean" },
              "summary": { "type": "string" }
            }
          },
          "counts": {
            "type": "object",
            "properties": {
              "total": { "type": "integer" },
              "verified": { "type": "integer" },
              "unverifiable": { "type": "integer" },
              "false": { "type": "integer" }
            }
          },
          "claims": {
            "type": "array",
            "items": {
              "$ref": "#/components/schemas/ClaimVerdict"
            }
          },
          "databaseMatches": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "claim": { "type": "string" },
                "status": { "type": "string" },
                "confidence": { "type": "integer" },
                "source": { "type": "string" },
                "sourceUrl": { "type": "string" }
              }
            }
          }
        }
      },
      "ClaimVerdict": {
        "type": "object",
        "properties": {
          "id": { "type": "integer" },
          "claim": { "type": "string" },
          "originalSentence": { "type": "string" },
          "status": {
            "type": "string",
            "enum": ["verified", "unverifiable", "false"]
          },
          "confidence": { "type": "integer" },
          "explanation": { "type": "string" },
          "correction": { "type": ["string", "null"] },
          "source": { "type": "string" },
          "sourceUrl": { "type": "string" },
          "category": { "type": "string" }
        }
      },
      "DatabaseSearchResponse": {
        "type": "object",
        "properties": {
          "ok": { "type": "boolean" },
          "mode": { "type": "string" },
          "count": { "type": "integer" },
          "claims": {
            "type": "array",
            "items": {
              "type": "object",
              "properties": {
                "id": { "type": "string" },
                "claim": { "type": "string" },
                "status": { "type": "string" },
                "confidence": { "type": "integer" },
                "explanation": { "type": "string" },
                "source": { "type": "string" },
                "sourceUrl": { "type": "string" },
                "origin": { "type": "string" },
                "checkedAt": { "type": "string" }
              }
            }
          }
        }
      }
    }
  }
}