Sigil in Action: Enforcing Rule Zero in Code

In the last two posts, I laid out the philosophical and architectural foundation for Sigil—a modular AI enforcement protocol that demands traceability, justification, and trust. But today, let’s pull back the curtain and show you a fragment of the runtime that enforces it.

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The Context

This snippet comes from the canon_validator.rs module, responsible for validating the integrity of Canon entries passed into the system by MMF Modules. These entries represent the building blocks of context, truth, and operational rules. If they can’t explain themselves or don’t meet structure, they fail fast.

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The Snippet

if entry.get("id").is_none() || entry.get("name").is_none() || entry.get("type").is_none() {
    error_count += 1;
    results.push(CanonValidationResult {
        entry_index: i,
        entry_id: id.clone(),
        status: CanonValidationStatus::Error,
        message: "Missing required field(s): id, name, or type".into(),
        irl_score: 0.0,
        timestamp: now,
    });
    continue;
}

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What This Does

• Checks if an entry is missing any of its required identity fields
• Marks the entry as invalid with a 0.0 IRL Score (Integrity Reasoning Layer)
• Logs the result for audit and downstream reasoning visibility

This is Rule Zero manifest. No guesses. No hand-waving. If it can't justify itself, it doesn't run.

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Why It Matters

Every Canon entry becomes part of Sigil's decision logic. Garbage in means risk out. This validation enforces one of Sigil’s core truths: “There is no trust without trace.”

More code coming soon. This system doesn’t just talk about integrity—it compiles it.

– D.T.

Sigil AI Runtime, Rule Zero, Codex Nexus, MMF Module, ethical AI, IRL reasoning layer, David Tofflemire, Rust LLM enforcement, audit trail logic, trust-based inference