Security Implications of Using Archify: A Comprehensive Technical Analysis

Archify is a locally-executed, deterministic rendering system with minimal network exposure, schema-based input validation, and no telemetry, presenting a small attack surface that requires standard hardening practices for dependencies and untrusted JSON handling.

Archify is an open-source architecture diagramming tool developed by tt-a1i/archify that processes typed JSON intermediate representations (IR) entirely on your local machine or in CI/CD environments. Unlike cloud-based diagramming services, it operates as a deterministic Node.js application that validates and renders diagrams without transmitting your source code or system descriptions to external servers. Understanding the security implications of using Archify is essential for teams processing untrusted architecture artifacts or integrating the tool into automated pipelines.

Network Privacy and Optional Update Checks

Archify minimizes network exposure by design, with only one optional outbound connection that can be completely disabled.

By default, Archify may optionally fetch a stable manifest to display reminders about new releases. This request sends only ordinary HTTP metadata (IP address and timestamp) and does not include project data, prompts, tokens, or any architecture descriptions. As documented in the [README.md](https://github.com/tt-a1i/archify/blob/main/README.md), you can eliminate this traffic entirely by setting an environment variable before execution:

ARCHIFY_UPDATE_CHECK_DISABLED=1 npx skills add tt-a1i/archify -g

This opt-out mechanism ensures zero network connectivity when processing sensitive architecture diagrams in air-gapped environments.

Local Execution Safety and Input Validation

The core security model relies on strict schema validation of typed JSON IR before any rendering occurs. In archify/bin/archify.mjs, the validation pipeline checks all input against a defined schema, catching malformed or unexpected structures that could otherwise lead to parsing vulnerabilities.

# Validate untrusted JSON IR before rendering to catch malformed input

node archify/bin/archify.mjs validate architecture path/to/input.json --json

# Non-zero exit code indicates validation failure; inspect the JSON report for details

This validation prevents arbitrary code execution by ensuring only expected data types and structures reach the rendering engine. However, the system remains vulnerable to denial-of-service (DoS) attacks via resource exhaustion. An attacker could supply extremely large or deeply nested JSON payloads that consume excessive CPU or memory during the validation phase, even though the content ultimately fails validation.

Client-Side Viewer Security Considerations

When serving generated diagrams through the interactive viewer, standard web application security practices apply. The viewer documented in [viewer/README.md](https://github.com/tt-a1i/archify/blob/main/viewer/README.md) runs as pure JavaScript in the browser, with labels and tooltips properly escaped to prevent XSS injection.

If you host untrusted JSON artifacts publicly:

• Serve the viewer over HTTPS to prevent man-in-the-middle attacks
• Apply Content Security Policy (CSP) headers to restrict script execution
• Set X-Content-Type-Options: nosniff to prevent MIME-type confusion

For local analysis of potentially malicious artifacts, consider sandboxing the browser environment:

# Launch viewer in incognito mode with disabled web security for isolation

google-chrome --incognito --disable-web-security file:///path/to/artifact.html

Dependency Hygiene and Supply Chain Security

Archify's core is a Node.js project with a modest dependency tree defined in archify/package.json. While the project minimizes third-party packages, known vulnerabilities in dependencies could compromise the rendering pipeline or CLI operations.

Run regular audits to maintain security:

# Audit production dependencies for known CVEs before CI/CD integration

npm audit --production

Crucially, Archify does not auto-download or silently install updates. The optional check only informs you of available versions; actual upgrades require manual intervention via npx skills add. This design prevents supply-chain attacks that rely on automatic, unattended upgrades of CLI tools.

Vulnerability Reporting and Security Policy

The project maintains a clear security policy in [SECURITY.md](https://github.com/tt-a1i/archify/blob/main/SECURITY.md) that encourages responsible disclosure through GitHub's private reporting channel. The document outlines the supported versions and the timeline for security patch availability. If you discover a validation bypass, DoS vector, or dependency vulnerability, use the private reporting mechanism rather than public issues to allow coordinated disclosure.

Summary

• Zero telemetry architecture ensures your code and diagrams never leave the local machine, with an optional update check that transmits only HTTP metadata.
• Schema validation in archify/bin/archify.mjs prevents code execution from malformed JSON IR, though large payloads may still cause resource exhaustion.
• Manual update mechanism eliminates silent supply-chain attacks by requiring explicit user consent for upgrades.
• Web viewer security follows standard browser security models requiring HTTPS and CSP headers when serving untrusted content.
• Dependency auditing via npm audit remains essential for maintaining the security posture of the Node.js runtime environment.

Frequently Asked Questions

Does Archify send my architecture diagrams or source code to remote servers?

No. According to the README.md in the tt-a1i/archify repository, Archify never transmits your code, system descriptions, or generated JSON IR to remote servers. All rendering occurs locally in the Node.js process or client-side browser. The only optional network activity is a version check that sends standard HTTP headers without project data.

Can malicious JSON IR execute arbitrary code on my system?

No, provided you use the validation workflow. The validate command in archify/bin/archify.mjs enforces a strict schema on the typed JSON IR before rendering, preventing injection attacks. However, validation does not protect against resource exhaustion attacks; extremely large files may still cause denial-of-service through memory or CPU consumption during parsing.

How do I completely disable network connectivity in Archify?

Set the environment variable ARCHIFY_UPDATE_CHECK_DISABLED=1 before running any Archify commands. This disables the optional manifest fetch for version reminders, ensuring the tool operates entirely offline. This configuration is recommended for air-gapped environments or when processing highly sensitive architecture data.

What is the recommended way to handle untrusted JSON artifacts in Archify?

First, validate the JSON IR using the built-in validator to catch malformed structures. Next, run the viewer in a sandboxed browser environment or serve it with strict security headers (CSP, X-Content-Type-Options) over HTTPS. Never pipe untrusted JSON directly to the render command without prior validation, and consider resource limits to prevent DoS from oversized payloads.

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}