Continuous threat modeling with AI, enforced in CI.
GuardLink is an open specification and command-line tool (CLI) that directly integrates security intentions into source code. Continuous threat modeling powered by AI and applied in CI pipelines. It utilizes the GuardLink Annotation Language (GAL) for a universal, language-agnostic, and human-readable grammar for security intent. Security annotations live in the code, are maintained by AI agents, and enforced in CI, turning the threat model into a quality gate.
For DevOps engineers, GuardLink enables the integration of continuous threat modeling into CI/CD pipelines. This ensures that security is validated with every code commit, preventing vulnerabilities from reaching production. For example, GuardLink can automatically fail a pull request if new unmitigated exposures are detected, as demonstrated by its `diff --fail-on-new` command.
For solopreneurs, GuardLink provides an accessible way to embed security directly into their codebase without extensive manual effort. It allows individual developers to maintain a dynamic threat model that evolves with their code. For instance, a solopreneur can use `guardlink init` to quickly set up AI-assisted annotation for their personal project, ensuring security best practices are followed from the start.
For team leads, GuardLink facilitates continuous threat modeling as a natural part of the agile development workflow. By annotating code directly and leveraging AI, security knowledge is kept in sync with code changes, reducing the burden of separate threat modeling sessions. For example, a team can use GuardLink's AI annotation feature (`guardlink annotate`) to quickly add security context to new features, which is then validated in their CI pipeline.
For security architects, GuardLink allows the definition and enforcement of standardized security controls across multiple projects and teams. The tool's annotation language (GAL) and centralized definitions enable consistent application of security patterns. For example, an architect can define a reusable control like `#prepared-stmts` in `.guardlink/definitions.js` and then ensure its use across various microservices via code annotations and CI validation.
GuardLink can be installed globally via npm using the command `npm install -g guardlink`. It requires Node.js version 18 or higher. You can also install it from source by building the project and then linking it globally.
GuardLink is an open-source tool with an MIT license, indicating it is free to use. The project's repository and homepage suggest it is available without cost.
As GuardLink is open-source under the MIT license, there is no direct cost associated with using the tool itself. Pricing information for any potential enterprise or support services is not readily available.
Alternatives to GuardLink in the continuous threat modeling space include tools that integrate security into the CI/CD pipeline. Specific alternatives depend on your existing toolchain and security requirements, but options often involve integrating SAST/DAST tools or custom scripting for threat modeling.
GuardLink focuses on improving the security of your code by embedding threat modeling directly into it and enforcing it in CI. Information regarding its specific GDPR compliance or security certifications is not detailed in the provided documentation.
GuardLink is primarily a command-line interface (CLI) tool. It offers an interactive HTML dashboard for visualizing threat models, which can be accessed via a web browser. There is no mention of dedicated mobile or desktop applications.
GuardLink integrates with AI coding agents to automatically generate and maintain security annotations within your code. It uses a Message Communication Protocol (MCP) server and behavioral directives to enable AI agents to add annotations like `@asset`, `@threat`, and `@mitigates` as code is written.
We're still verifying the official pricing for GuardLink. In the meantime, the most up-to-date plans and prices are available directly on the publisher's website.
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