VECTIS SENTINEL

Autonomous Release Safety & Semantic Blast-Radius Intelligence for Enterprise Monorepos

Stop relying on luck and flaky tests. Protect every pull request with deterministic AST contract intelligence and autonomous IBM Granite 3.0 shims.

Live Cockpit • Demo View

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The Problem: The 02:00 AM Silent Monorepo Outage

In large-scale modern TypeScript monorepos, microservices and batch cron jobs import shared types across package boundaries.

When a core developer refactors an identity schema (e.g., migrating User.id to SessionUser.sub for OIDC 2.0 compliance), traditional CI pipelines suffer from Semantic Monorepo Blindness:

Developer pushes PR #482 ──> TypeScript Compiler (tsc) PASSES (only typechecks modified files)
                         ──> ESLint / Prettier PASSES (clean code style)
                         ──> Unit Tests PASS (mocked session fixtures pass green)
                         ──> MERGED TO MAIN & DEPLOYED TO CLOUD
                         ──> 02:00 AM Midnight Settlement Cron crashes with TypeError: undefined
                         ──> $2.4M Financial Transaction Pipeline Halted

Why Existing Tools Fail

• Compilers (tsc --build) are slow on large monorepos (taking 8 to 25 minutes) and are frequently partitioned per package, missing transitive dynamic call-site semantics.
• Linters verify lexical syntax, not downstream dependency graph explosion.
• Test Suites rely on mocked models that do not reflect production contract drift.
• Generic LLMs suffer from non-deterministic hallucination, context drift, and slow generation latency (5 to 15 seconds), making them unfit as pre-commit blocking gates.

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⚡ The Solution: Deterministic Release Gate + IBM Granite 3.0

Vectis Sentinel operates as an autonomous, pre-merge gatekeeper sitting directly between GitHub Pull Requests and deployment pipelines:

1. Deterministic AST Diffing (1.2ms, 0.0% Hallucination): Analyzes contract mutations across the repository using Python-native AST parsing and NetworkX Directed Acyclic Graph (DAG) traversal.
2. Multi-Hop Blast Radius Scoring: Computes exact downstream impact based on dependency depth, service criticality, and production traffic weight with continuous asymptotic saturation ($\tau = 55.0$).
3. PCI-DSS v4.0.1 Compliance Engine: Scans pull request diffs for payment card data exposure (Req 3.4.2), hardcoded credentials (Req 8.2.8), and audit identity continuity (Req 10.2.1).
4. Autonomous Granite 3.0 Auto-Heal (Two-Tier Remediation): Generates 14-day ephemeral ES6 Proxy shims and permanent clean codemod PRs via IBM Granite 3.0 8B Instruct on watsonx.ai, transparently bridging old signatures with new contracts without requiring callers to rewrite their code.
5. Cryptographic Release Passport: Issues RFC 8785 canonical JSON attestations signed with Ed25519 & HMAC-SHA256 dual-control signatures, mathematically proving release integrity before merge.
6. OASIS SARIF v2.1.0 Exporter: Natively uploads security and breaking change alerts into GitHub Code Scanning (Security Tab).

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System Architecture

flowchart TD
    PR["GitHub Pull Request / Webhook (PR #482)"] --> INGEST["Vectis Ingestion Engine"]

    subgraph CoreEngine ["Vectis Sentinel Deterministic Core (1.2ms)"]
        AST["AST Contract Mutation Engine<br/>(Symbol Diff & Field Relocation)"]
        DAG["NetworkX Dependency DAG Crawler<br/>(Tarjan Cycles & Multi-Hop Traversal)"]
        SCORER["Blast Radius Risk Scorer<br/>(Depth Decay x Criticality x Traffic)"]
        PCI["PCI-DSS v4.0.1 Compliance Engine<br/>(Req 10.2.1, 3.4.2, 8.2.8)"]

        AST --> DAG
        DAG --> SCORER
        AST --> PCI
    end

    INGEST --> AST
    SCORER --> EVAL["Release Gate Decision Engine"]
    PCI --> EVAL
    PCI --> SARIF["OASIS SARIF v2.1.0 Exporter"]
    SARIF --> GH_SEC["GitHub Security Tab (Code Scanning)"]

    EVAL -->|"Hazard: Score 70+"| BLOCK["GitHub Checks API: Block Merge<br/>Inline PR Review Annotations"]
    EVAL -->|"Auto-Heal Active"| HEAL["IBM Granite 3.0 / watsonx.ai<br/>Autonomous ES6 Proxy Synthesizer"]

    HEAL --> SHIM["Synthesized Compatibility Shim<br/>(Auto-Heal PR Commit)"]
    SHIM --> PASSPORT["Cryptographic Release Passport<br/>(RFC 8785 Canonical JSON + HMAC-SHA256)"]

    EVAL -->|"Safe: Score under 30"| PASSPORT
    PASSPORT --> UNLOCK["GitHub Checks API: Release Pass<br/>Merge Unlocked"]

    style CoreEngine fill:none,stroke:#3f3f46,stroke-width:1.5px,stroke-dasharray:4

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Benchmark Case: The PR #482 Incident

Vectis Sentinel includes a reproduction of a critical financial monorepo drift:

• File Modified: src/auth/session.ts
• Breaking Mutations:
  1. User.id renamed to SessionUser.sub (OIDC 2.0 Standard Alignment)
  2. User.tier moved to nested property metadata.tier
• Downstream Casualties (Blast Radius Score: 84.0 / 100: CRITICAL HAZARD):
  • payments/checkout.ts (Depth 1, Criticality 1.0, Traffic 1.0) -> Broken billing pipeline
  • workers/settlement_worker.ts (Depth 1, Criticality 0.85, Traffic 0.6) -> Broken midnight ACH settlement
  • reporting/invoice_generator.ts (Depth 2, Criticality 0.7, Traffic 0.3) -> Broken customer invoicing
  • api/routes/user_profile.ts (Depth 1, Criticality 0.5, Traffic 0.7) -> Broken user profile endpoint
• PCI-DSS Violation: Req 10.2.1 (Audit log identity continuity destroyed).
• Autonomous Resolution: IBM Granite 3.0 synthesizes an ES6 Proxy compatibility shim within 850ms, bridging property accesses and satisfying PCI-DSS audit continuity. Risk drops to 12.0 / 100 (CLEAN PASS).

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The 4 Core Pillars

1. Deterministic AST & Graph Crawler

• Ultra-fast symbol extraction without full TypeScript compiler bootstrapping; supports TypeScript (interfaces, types, union narrowing) and Python Pydantic (BaseModel, TypedDict).
• Traverses deep monorepo dependency chains using NetworkX DAG algorithms with request-scoped graph isolation and $O(V+E)$ iterative DFS cycle resolution.
• Continuous asymptotic saturation scoring ($\tau = 55.0$) eliminating 100-point ceiling saturation: $$\text{TotalScore} = 100.0 \times \left(1 - \exp\left(-\frac{\text{RawTotalRisk}}{\tau}\right)\right)$$ where $\text{RawTotalRisk} = (\text{BlastDepthScore} \times \text{DensityMultiplier}) + \text{CritScore} + \text{CompliancePenalty}$ with inverse square root depth decay ($\text{Depth}^{-0.5}$) and graph blast density scaling.
• Anti-Prompt-Injection Defense (CWE-94): Deterministic scanning of commit messages and diff comments, instantly hard-blocking risk to 100.0 on adversarial injection attempts.

2. IBM Granite 3.0 & watsonx.ai Auto-Heal

• Powered by ibm/granite-3-8b-instruct deployed on IBM Cloud watsonx.ai with offline deterministic synthesis fallback.
• Uses formal ChatML prompt engineering with zero runtime overhead constraints and a 3-state Circuit Breaker (CLOSED, OPEN, HALF_OPEN).
• Two-Tier Remediation Architecture:
  • Layer 1 (14-Day Ephemeral Defensive Proxy Membrane): Immediate runtime ES6 Proxy adapter implementing 4 robust traps: get, ownKeys (with Set deduplication preventing ORM/Kafka key duplication), getOwnPropertyDescriptor (enumerable: true), and toJSON(). Features an automatic 14-day TTL expiry warning to eliminate permanent technical debt.
  • Layer 2 (Clean AST Codemod PR Generator): Method synthesize_codemod_diff produces git-applyable unified diffs (.patch) to permanently modernize downstream call sites without proxy runtime overhead.

3. PCI-DSS v4.0.1 Compliance Engine & SARIF Exporter

• Inspects pull request diffs for strict financial regulations and security standards:
  • Req 10.2.1: User identification audit trails (verifies identity continuity shims via toJSON / Proxy traps).
  • Req 3.4.2: Prohibits raw Primary Account Number (PAN) storage and post-authorization CVV retention.
  • Req 8.2.8: Prohibits hardcoded API secrets and private keys.
  • Req 6.2.4 & SOC2 CC6.1: Software security against CWE-94 injection surfaces and tenant data protection.
• Isolated Per-File Diff Auditing: Eliminates cross-file diff pollution and test fixture false positives across multi-file pull requests.
• Full OASIS SARIF v2.1.0 compliance with security-severity, CWE mappings, and GitHub Code Scanning alerts.

4. Cryptographic Release Passport

• Mathematically immutable release receipt based on RFC 8785 Canonical JSON (JCS).
• Dual-Control Governance: State machine transitions (PENDING_REVIEW -> APPROVED) requiring human-in-the-loop authorization (POST /api/passport/dual-control-sign).
• Asymmetric Ed25519 & HMAC-SHA256 signatures (passport_hash), verifiable offline by CI/CD gates before production container builds.
• Satisfies PCI-DSS v4.0.1 Req 10.5.1 audit log tamper resistance.

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IBM Bob 2.0 FastMCP Server (Agent Mode)

Vectis implements the Model Context Protocol (MCP), allowing AI agents like IBM Bob 2.0 to inspect monorepos and trigger auto-heal remediation autonomously:

MCP Tool Name	Description	Inputs
analyze_blast_radius	Analyzes contract drift and returns affected downstream services	repo_path, base_ref, head_ref, changed_files
synthesize_granite_shim	Generates an ES6 Proxy compatibility adapter via IBM Granite 3.0	symbol, old_sig, new_sig, callers
audit_pci_compliance	Evaluates diff for PCI-DSS v4.0.1 violations	diff_text, file_path
generate_release_passport	Issues an RFC 8785 signed release passport	pr_number, commit_sha, author, risk_score, verdict, shim_applied

Run the FastMCP server:

python -m app.mcp.server --transport stdio

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Quickstart & Local Installation

Prerequisites

• Python 3.11+
• Node.js 20+ & npm
• Git

1. Clone & Setup Sentinel Engine (Terminal 1)

git clone https://github.com/swakarsa/vectis.git
cd vectis/engine

# Create virtual environment
python -m venv .venv
source .venv/bin/activate  # Windows: .venv\Scripts\activate

# Install dependencies
pip install -r requirements.txt

# Run test suite
pytest tests/ -v

# Start FastAPI server (Port 8000)
python -m uvicorn app.main:app --host 0.0.0.0 --port 8000 --reload

2. Setup Cockpit Console (Terminal 2)

# From repository root:
cd console

# Install dependencies
npm install

# Start development server
npm run dev

# Open visual cockpit canvas in browser:
# http://localhost:3000/cockpit

3. Docker Compose (One-Click Launch)

docker-compose up --build

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CLI Usage

Vectis provides a deterministic command-line interface for CI/CD runners:

# Option 1: Run directly from repository root
# Python CLI runner (CI/CD pipeline & local git hooks):
python engine/app/cli.py audit --repo .
python engine/app/cli.py audit --repo . --diff main...HEAD
python engine/app/cli.py audit --repo . --sarif vectis-compliance.sarif
python engine/app/cli.py passport verify --file fixtures/sample-passport.json
python engine/app/cli.py hook install

# Node.js runner (Local execution):
node console/bin/vectis.js audit --pr 482 --repo swakarsa/vectis
node console/bin/vectis.js verify --file fixtures/sample-passport.json

# Option 2: Run via npx / global binary (after local link):
cd console && npm link && cd ..
vectis-gate audit --pr 482 --repo swakarsa/vectis

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Team & Hackathon Submission

• Team Name: swakarsa
• Project Name: Vectis Sentinel
• Hackathon: IBM Bob 2.0 Hackathon (September 25-27, 2026) on lablab.ai
• License: MIT