Reality Lock: Eliminating AI Agent 'Hallucination of Done' via Cryptographic Proofs in Python

The Hallucination of Done

In production agent engineering, the most hazardous bug is not an explicit exception, but an agent confidently declaring success when the actual underlying script failed silently.

Because LLMs are trained to generate polite, helpful text, their default behavior under ambiguous errors is to hallucinate completion.

The Three Invariants of Reality Lock

1. Default-Deny Authorization: Side-effects are quarantined until an explicit cryptographic execution lease is granted.
2. Physical Observed Evidence: The engine directly queries operating system kernel state, validating SHA-256 file digests and command exit codes.
3. Merkle Non-Repudiation: Produces immutable execution receipts that make silent failures mathematically impossible.

Quickstart Implementation

pip install reality-lock

from reality_lock import RealityLockEngine, FileSystemVerifier

engine = RealityLockEngine.create_strict()

# Verify and cryptographically seal file modification
receipt = engine.verify_and_seal(
    action="apply_database_migration",
    verifier=FileSystemVerifier(target_path="./schema.sql", expected_hash="e3b0c442...")
)

if receipt.is_valid:
    print("Physical Evidence Confirmed! Merkle Seal:", receipt.sha256_merkle_digest)
else:
    print("REJECTED: Hallucination of Done Detected!")