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[SAR] APPENG-5149: MCP response integrity verification #199

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[SAR] APPENG-5149: MCP response integrity verification #199

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32 changes: 32 additions & 0 deletions src/lightspeed_agent/tools/integrity.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,32 @@
"""Lightweight data integrity verification for MCP tool results."""

import hashlib
import logging

logger = logging.getLogger(__name__)


def log_response_fingerprint(
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@luis5tb luis5tb May 7, 2026

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this is never imported, nor used. The whole file looks like dead code

tool_name: str,
result: str,
request_id: str = "",
) -> str:
"""Log a SHA-256 fingerprint of an MCP tool result for forensic tracing.

Args:
tool_name: Name of the MCP tool that produced the result.
result: The raw result string.
request_id: Optional request ID for correlation.

Returns:
The hex digest fingerprint.
"""
fingerprint = hashlib.sha256(result.encode("utf-8")).hexdigest()[:16]
logger.info(
"MCP result fingerprint: tool=%s request_id=%s fingerprint=%s length=%d",
tool_name,
request_id,
fingerprint,
len(result),
)
return fingerprint
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