DCL Evaluator
Cryptographic audit trail for AI agents. Powered by Leibniz Layer™
Every decision your AI agent makes — sealed, verified, auditable.
DCL Evaluator is the first implementation of Leibniz Layer™ — a cryptographic verification protocol for AI agent decisions. It brings deterministic, tamper-evident audit trails to any LLM-powered system.
Why DCL Evaluator
AI agents make decisions. Those decisions carry risk — legal, financial, reputational. Yet most AI systems are black boxes: no record of what was decided, why, or whether the decision was tampered with afterward.
DCL Evaluator solves this with a simple principle borrowed from cryptography: commit every decision into a hash chain. Modify any past record and the entire chain invalidates. Mathematical proof of integrity — no trust required.
Core capabilities
- SHA-256 hash chain — every agent action cryptographically sealed
- Merkle tree audit trail — tamper-evident by design
- Deterministic policy engine — identical input = identical decision, 100% reproducible
- Drift detection — statistical Z-test catches behavioural drift before it becomes a compliance failure
- Multi-LLM support — Claude, GPT-4, Grok, Gemini, DeepSeek, Ollama (local, air-gapped)
- MCP server — connect any agent in minutes via Model Context Protocol
- Compliance reports — tamper-evident PDF export, ready for regulators
- Offline-capable — runs fully air-gapped, zero data leaves your infrastructure
Connect via MCP
{
"mcpServers": {
"dcl-evaluator": {
"url": "https://mcp.fronesislabs.com/sse",
"headers": {
"x-api-key": "your-key"
}
}
}
}
Four tools available:
| Tool | Description |
|---|---|
dcl_commit | Seal an agent action into the hash chain |
dcl_verify | Verify chain integrity |
dcl_get_chain | Retrieve full audit trail |
dcl_report | Generate compliance report |
Health check: https://mcp.fronesislabs.com/health
Download
Desktop app (Windows). Wails + Go + React. Works offline.
Compliance coverage
Built-in policy templates:
DEFAULT · EU AI ACT · GDPR · FINANCE · MEDICAL · RED TEAM
Leibniz Layer™
DCL Evaluator is the first product implementing Leibniz Layer™ — the cryptographic verification layer for the AI agent economy.
Named after Gottfried Wilhelm Leibniz — mathematician, logician, pioneer of deterministic reasoning.
"Every decision, every action deterministically sealed, tamper-evident, auditable."
Links
- Website: fronesislabs.com
- Leibniz Layer™: leibniz.fronesislabs.com
- IP & Patents: leibniz.fronesislabs.com/ip-patents.html
- MCP endpoint: mcp.fronesislabs.com
- X: @keykeeper42
- White Paper: WHITEPAPER.md · leibniz.fronesislabs.com/whitepaper.html
© 2026 Fronesis Labs · Leibniz Layer™, DCL Evaluator™ — Patent Pending · Source-Available License