# Hermes Dispatch Tool — Claim Verifier
# Source: https://hermesdispatch.dev/tools/claim-verifier/
# Description: Verify a claim against web search results with a confidence score and source list.
# License: MIT (generated by hermesdispatch.dev)
#
# INSTALL:
#   1. Save this file as ~/.hermes/hermes-agent/tools/claim_verifier.py
#   2. Restart Hermes or run /reset in a session
#
# MANUAL REGISTRY:
#   from tools.claim_verifier import register
#   register()

import json

def _ok(result):
    return json.dumps({"success": True, "data": result}, indent=2)

def _err(message):
    return json.dumps({"success": False, "error": message}, indent=2)

TOOL_NAME = "claim_verifier"
TOOLSET = "agents"

SCHEMA = {
    "type": "function",
    "function": {
        "name": TOOL_NAME,
        "description": "Verify a claim against web search results. Returns a confidence score, support/contradiction/neutral counts, and a citable ClaimReview JSON verdict.",
        "parameters": {
            "type": "object",
            "properties": {
                "claim": {"type": "string", "description": "Claim text to verify."},
                "sources": {"type": "integer", "default": 5, "description": "Number of sources to evaluate."},
            },
            "required": ["claim"]
        }
    }
}

def verify_claim(claim, sources=5):
    # Placeholder: real implementation should call a web search API, fetch pages,
    # and classify each snippet as support / contradict / neutral using an LLM or keyword rules.
    return _ok({
        "claim": claim,
        "confidence_score": 0.0,
        "verdict": "PENDING",
        "counts": {"support": 0, "contradict": 0, "neutral": 0},
        "sources": [],
        "note": "This is a scaffold. To activate, implement web search + page extraction + classification in the HANDLER logic. The website at hermesdispatch.dev/tools/claim-verifier/ provides the reference algorithm.",
    })

def HANDLER(args):
    try:
        return verify_claim(args.get("claim", ""), int(args.get("sources", 5)))
    except Exception as e:
        return _err(str(e))

def register():
    try:
        from tools.registry import registry
        registry.register(name=TOOL_NAME, toolset=TOOLSET, schema=SCHEMA, handler=HANDLER)
    except ImportError:
        print("Hermes registry not found; skipping manual registration.")

if __name__ == "__main__":
    print(HANDLER({"claim": "NVIDIA released the RTX 5090 in June 2026"}))