Security & Governance · Reviewed May 23, 2026

Stacklok

Stacklok is the AI and open-source supply-chain security company founded by Heptio's Craig McLuckie. $17.5M Series A; backed by Madrona and Index Ventures.

Pricing
Freemium
Rating
4.48/ 5 · 108 reviews
Last reviewed
May 23, 2026
Channels
Stacklok security & governance tool screenshot
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Overview

Stacklok: AI & Open Source Supply Chain Security

Stacklok is AI and open-source supply chain security platform. AI coding tools have raced ahead of security tooling — engineers paste secrets into AI prompts and accept completions that pull in untrusted open-source packages. Stacklok's pitch is the security layer for the AI coding era: CodeGate intercepts risky AI completions, Trusty evaluates open-source packages, Minder enforces supply-chain policy — by the team that brought Kubernetes to production.

Key Features

  • AI and open-source supply chain security platform
  • Founded in 2023 by Craig McLuckie (Heptio co-founder, Kubernetes co-creator) and Luke Hinds
  • Approximately $17.5M Series A; backed by Madrona Venture Group and Index Ventures
  • Minder is the open-source policy engine for software supply chain configuration
  • CodeGate sits between developers and AI coding tools to prevent secret leakage and risky completions
  • Trusty evaluates open-source packages for trustworthiness and supply-chain risk
  • Used by engineering organizations adopting AI coding tools and managing open-source dependencies

Ideal Use Case

Engineering organizations that have rolled out AI coding tools (Cursor, Copilot, Cline) and now need guardrails against secret leakage, risky completions, and untrusted open-source dependencies — particularly companies in regulated industries.

Why Use Stacklok

AI coding tools have raced ahead of security tooling — engineers paste secrets into AI prompts and accept completions that pull in untrusted open-source packages. Stacklok's pitch is the security layer for the AI coding era: CodeGate intercepts risky AI completions, Trusty evaluates open-source packages, Minder enforces supply-chain policy — by the team that brought Kubernetes to production.

FAQ

Q: Who founded Stacklok? A: Craig McLuckie (Heptio co-founder and Kubernetes co-creator) and Luke Hinds co-founded Stacklok in 2023.

Q: How much has Stacklok raised? A: Approximately $17.5M Series A with Madrona Venture Group and Index Ventures participating.

Q: What is CodeGate? A: CodeGate is Stacklok's product that sits between developers and AI coding tools (Cursor, Copilot, Cline) to prevent secret leakage and risky completions before they reach the AI provider.

Q: What is Minder? A: Minder is Stacklok's open-source policy engine for software supply-chain configuration — enforcing policies across repositories, dependencies, and CI/CD pipelines.

Q: Stacklok vs Snyk vs Endor Labs? A: Snyk and Endor Labs focus on traditional code and dependency security. Stacklok's differentiation is the AI-coding angle — CodeGate intercepts risky AI completions, which traditional security tools weren't built to handle.

tl;dr

Stacklok is the AI and open-source supply-chain security company founded by Heptio co-founder Craig McLuckie. ~$17.5M Series A; Madrona + Index Ventures-backed. CodeGate intercepts risky AI completions; Trusty evaluates packages; Minder enforces policy.

Related

Looking for more options? Browse the Security & Governance directory or read our best AI security tools listicle. Stacklok is also tracked on Crunchbase.

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Why Use Stacklok

Rating
4.48
Across 108 verified reviews
Saved
95
By ToolDirectory readers
Pricing
Freemium
Publisher-listed pricing model
Listed
Since 2026
Continuously re-reviewed by editors
Category
Security & Governance
Primary listing
Verified by editors during the most recent review · ToolDirectory.AI
Stacklok security & governance tool screenshot
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User Reviews

4.48
Out of 5 · 108 ratings
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