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Open source

ShieldCortex

Stop your AI agents leaking, hallucinating, or getting hijacked.

Open-source memory security, prompt injection defence, and audit-ready replay. ShieldCortex gives you a 6-layer defence pipeline you can inspect, review, and control. MIT licensed.

Free open source · MIT licensed · npm install shieldcortex

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6-layer pipelineSafe memoryBlocked threat

Features

What it does.

Inspectable Memory

See what the agent stored, where it came from, and what it would recall next. Capture, Recall, Review, and graph views turn memory into an operator-controlled workflow.

Proactive Recall

Memories are automatically recalled and injected into every conversation — before the model responds. No more repeated mistakes. FTS5 + category boost in <100ms.

Memory Poisoning Defence

Every memory write passes through a 6-layer defence pipeline covering prompt injection, encoding tricks, paraphrased attacks, format anomalies, behavioural anomalies, and credential leakage before it lands.

Iron Dome Behavioural Protection

Agent-aware security that controls what your AI can do, not just what it remembers. Injection scanning, action gates, PII guard, and emergency kill switch.

Environment Firewall

Third defence layer — protects what the agent sees. shieldcortex env scan <url> scores provenance, detects hidden instructions (display:none, visibility:hidden, bidi overrides, same-colour text), and runs injection scanning on visible and hidden surfaces separately. A prompt-injection hit inside hidden content marks the page hostile regardless of the domain.

MCP-Native Workflows

Works as a standalone MCP memory server or integrates with OpenClaw, Claude Code, VS Code, Cursor, and Codex through the shared MCP config.

X-Ray Scanner

Deep file and dependency analysis for prompt injection, steganographic payloads, obfuscated code, credential leaks, risky packages, and CI gatekeeping before bad code lands.

Operator Review Workflows

Suppress, archive, pin, canonicalize, merge, and replay. Teams can investigate incidents, review suspicious memory, and keep future recall under control instead of trusting a black box.

Open Source, MIT Licensed

Free and open source under the MIT licence. The full defence pipeline, custom patterns and policies, audit export, X-Ray scanning, and the Cortex memory system all run locally at no cost.

Structured Memory Types

v4 organises memory into four typed categories — user preferences, feedback from corrections, project context, and reference knowledge — so recall is always scoped to the right kind of information.

Staleness Scoring & Decay

Memories age. v4 applies time-based decay scoring so stale entries sink in relevance, with operator warnings when recalled memories are old enough to be unreliable.

LLM-Powered Reranking

Hybrid recall combines vector similarity with an LLM reranking pass, surfacing the most contextually precise memories instead of just the nearest embeddings.

Dream Mode Consolidation

Run shieldcortex consolidate to trigger background memory consolidation — like sleep for your AI. Dream mode merges duplicates, resolves contradictions, and strengthens important memories offline.

Memory Scopes

Private and team scopes let multi-agent fleets share project context while keeping per-agent preferences isolated. Control exactly what crosses the boundary.

Cloud Replica Sync

Opt-in local-to-cloud replication for memories and graph data, with queue diagnostics, per-project controls, and shared visibility for teams running across multiple devices.

Positive Feedback Capture

v4 doesn't just learn from mistakes. It captures confirmations, successes, and explicit praise so agents reinforce what works — not only what went wrong.

Smart Save Filtering

Before a memory is written, v4 checks whether it's derivable from existing entries or redundant. Duplicate and low-value information is blocked at the gate, keeping memory lean.

How it works

3 simple steps.

1

Capture

Install ShieldCortex and let your agent start storing durable memory with provenance, trust scoring, and source visibility instead of scattered markdown and hidden prompts.

2

Inspect

Use Capture, Recall, and Review to see what the agent stored, what it would retrieve, and what should be suppressed, merged, archived, or marked canonical.

3

Protect

Every memory write is scanned through all six layers. Iron Dome gates risky behaviour. Cloud teams then use Device Doctor, Verify, Replay, and Review to investigate incidents and remediate them.

See It In Action

Watch ShieldCortex block a prompt injection and privilege escalation in real time.

Also on X/Twitter

Pricing

Simple, transparent pricing.

Recommended

Free

£0

Everything runs locally — free, open source, MIT licensed

  • Full 6-layer defence pipeline
  • Iron Dome with custom policies
  • Custom injection patterns + firewall rules
  • Credential leak detection (25+ patterns)
  • Audit export (JSON/CSV)
  • X-Ray scanner + CI gate
  • Cortex memory system + knowledge graph
  • Proactive recall (FTS5 + category boost, <100ms)
  • Structured memory types, staleness scoring & decay
  • Local dashboard
  • Agent hooks (OpenClaw, Claude Code, Cursor)
  • Free cloud tier (500 scans/month sync)

Enterprise

Custom

For teams and fleets — contact us

  • Everything in Free
  • Fleet deployment and management
  • Memory sync at scale
  • SSO + volume licensing
  • Self-hosted deployment
  • SIEM integration + compliance exports
  • Dedicated support + SLA

Frequently Asked Questions

Does ShieldCortex require a cloud account?+
No. ShieldCortex runs entirely on your machine with no cloud, no account, and no telemetry. An optional free cloud account adds replica sync for memories, graph data, and audit logs across devices, with 500 scans a month included. For fleets, always-on servers, and memory sync at scale, Enterprise adds SSO, dedicated support, and an SLA — contact us to discuss.
How does the 6-layer defence pipeline work?+
Every memory write passes through the defence layers: input sanitisation (strips control characters), pattern detection (regex-based prompt injection firewall), semantic analysis (embedding similarity to a curated attack corpus, on the async deep-scan path), structural validation (JSON integrity, format anomalies, fragmentation attempts), behavioural scoring (entropy analysis, anomaly detection, baseline deviation), and credential leak detection (25+ patterns across 11 providers).
What is ShieldCortex best at?+
ShieldCortex is strongest when you need an AI agent to keep useful memory without letting untrusted memory become future truth. Its core value is memory security: inspect what was stored, see what will be recalled, review suspicious or contradictory memory, and block poisoning before it spreads. It combines proactive recall with X-Ray scanning, structured memory, cloud replica sync, incident replay, dream mode consolidation, and smart save filtering to keep memory clean and operationally useful.
What is Iron Dome?+
Iron Dome is the behavioural protection layer included free with ShieldCortex. It controls what your AI agent can do — not just what it remembers. It includes injection scanning, action gates, PII protection, emergency kill switch, and four built-in security profiles (personal, school, enterprise, paranoid).
What is the Environment Firewall?+
Environment Firewall is the third defence layer (added in v4.10.0). The memory firewall protects what the agent stores; Iron Dome protects what the agent does; the Environment Firewall protects what the agent sees from the outside world. Run shieldcortex env scan <url> against any page and it returns a taint label (trusted, untrusted, suspicious, hostile) with CI-friendly exit codes. It scores provenance, detects hidden content tricks (display:none, visibility:hidden, bidi overrides, same-colour text, HTML comments, ARIA-hidden regions, meta refreshes), and runs injection patterns against visible and hidden text separately — a hit inside hidden content marks the page hostile regardless of the domain, because humans will never see it.
Is there a done-for-you option?+
Yes. Enterprise engagements include done-for-you configuration: we analyse your codebase and agent stack, produce a hardened ShieldCortex config, and support rollout across your fleet. Contact sales@drakonsystems.com to discuss.
Which AI tools does ShieldCortex integrate with?+
ShieldCortex works with OpenClaw (native hook), Claude Code (MCP memory server), VS Code and Cursor (MCP integration), and Codex (shared Codex config). It can also guard any memory backend via the universal memory bridge scan() API.
How do Cloud API key scopes work?+
Cloud keys are scope-based. Teams can now edit an existing key instead of revoking and recreating it. Typical sync devices use scan and audit. Add verify when you want the Verify workspace to receive LLM verification jobs. Keep keys and admin scopes for humans rather than unattended devices.
What does Incident Replay actually show?+
Replay is an incident and event reconstruction surface, not a full chat-session movie. It focuses on audit, verify, sync ingest, and synced memory events that matter for investigation, then lets you export reports, scope by device or project, and jump into Review, Capture, or Graph.

Secure Your AI Agent Memory

Proactive recall, X-Ray scanning, cloud replica sync, and structured memory controls. Open source, MIT licensed. Get started in under a minute.