Shpbl Spec Drift Sentinel

Specification only — no implementation exists in this repository.

Explainable detection of material changes in an agent’s behaviour.

This is an independent SHPBL research candidate intended for possible future submission to the Tenable CyberAgents Exchange. It has not been submitted to, approved by, or endorsed by Tenable.

Read the contract

• SPEC-agent-behaviour-drift-sentinel.md — version 1.0 public behavior specification
• PROVENANCE.md — SHPBL/CMPSBL heritage and the public IP boundary
• STATUS.md — current review and submission state
• LICENSE — MIT grant limited to this repository's specification documents

Proposed product form

MCP server + skill. The specification defines inputs, outputs, invariants, state transitions, failure modes, security boundaries, worked examples, and externally testable properties. It deliberately does not prescribe or contain implementation code.

Why a security practitioner might use it

The contract is designed to become an independently testable defensive tool rather than a policy-only document. Reviewers can challenge the public behavior now, before implementation decisions narrow the design or create accidental IP exposure.

Current stage

SPECIFICATION RELEASED → IMPLEMENTATION NOT AUTHORIZED → NOT SUBMITTED → NOT APPROVED

A separate human approval is required before fresh implementation. A later exact-file IP-surface review and license decision will apply to those new implementation bytes.

Review

Open an issue with a concrete ambiguity, counterexample, threat-model gap, or externally testable property. Do not report this repository as a working capability or a Tenable listing.

Origin

Composed by SHPBL from capability intent discovered across SHPBL and its same-author sister project, CMPSBL. See PROVENANCE.md for the precise claim.