Grades are a hygiene check, not a security guarantee.

Claude Code, Skill

Zypher Agent

A minimal yet powerful framework for creating AI agents with full control over tools, providers, and execution flow.

Compatibility: Not stated.

Grade B

Minor issues only, no Medium or High. Worth a quick look at the findings below before installing.

Graded by PlugVetRubric v2

Not a guarantee. A hygiene check of the source at the commit shown, not a security audit.

Rescanned at commit 329ad94910ef, unchanged since the check below.

NETWORK_NO_FIXED_HOST SECRETS_PATH_DOTENV PERMISSION_SHELL_DECLARED SECRETS_ENV_READ OBFUSCATION_FILE_OVER_READ_CAP

Why this grade

  • NETWORK_NO_FIXED_HOST Low

    Makes a network call whose host is not written as a fixed address.

    packages/agent/storage/s3_storage_service.integration.test.ts, line 132 const putResponse = await fetch(result.url, {

  • SECRETS_PATH_DOTENV Low

    Mentions a .env file.

    .env.example, line 2 # Copy this to .env for local development

  • PERMISSION_SHELL_DECLARED Note

    Runs shell commands, and the manifest or description says so.

    examples/mcp/mcp_client.tsx, line 162 const command = new Deno.Command("open", {

  • SECRETS_ENV_READ Note

    Reads an environment variable whose name contains KEY, SECRET, TOKEN, PASSWORD or CREDENTIAL.

    packages/agent/llm/cloudflare.ts, line 97 * apiToken: process.env.CF_AIG_API_TOKEN,

  • OBFUSCATION_FILE_OVER_READ_CAP Note

    A file was over the read cap and was not fully read.

    deno.lock, line 1 {

Any High, or two or more Medium findings, give D. One Medium gives C. Low findings or a security Note give B. Each code names a finding behind the letter.

Grades are a hygiene check of the source at the commit shown, on the date checked, not a security audit or a guarantee. The free directory grades are automated. Before release, a PlugVet engineer reviews every paid report and any grade we hold back, including all F grades, against the source code and the evidence we quote.

What was checked

Plain notes from the hygiene checks.

  • Permissions

    Note

    requests shell access. The manifest names this permission.

    PERMISSION_SHELL_DECLARED

    examples/mcp/mcp_client.tsx, line 162

    const command = new Deno.Command("open", {

    packages/agent/loop_interceptors/error_detector.ts, line 39

    const result = await new Deno.Command(command, {

    packages/agent/tools/fs/file_search_tool.ts, line 30

    const command = new Deno.Command("fd", {

    Show more

    packages/agent/tools/fs/grep_search_tool.ts, line 68

    const command = new Deno.Command("rg", {

    packages/utils/command.ts, line 26

    const output = await new Deno.Command(command, options).output();

  • Install and update

    Pass

    No install-time script found, and dependencies are pinned or absent.

  • Network

    Concern

    can reach a host that is not written as a fixed address.

    NETWORK_NO_FIXED_HOST

    packages/agent/storage/s3_storage_service.integration.test.ts, line 132

    const putResponse = await fetch(result.url, {

    packages/agent/storage/s3_storage_service.integration.test.ts, line 150

    const getResponse = await fetch(signedUrl!);

    packages/agent/storage/s3_storage_service.integration.test.ts, line 162

    const unsignedResponse = await fetch(unsignedUrl.toString());

    Show more

    packages/agent/storage/s3_storage_service.integration.test.ts, line 268

    const response = await fetch(signedUrl!);

    packages/agent/storage/s3_storage_service.integration.test.ts, line 277

    const unsignedResponse = await fetch(unsignedUrl.toString());

    packages/agent/storage/s3_storage_service.integration.test.ts, line 347

    const response = await fetch(signedUrl!);

    packages/agent/storage/s3_storage_service.integration.test.ts, line 356

    const unsignedResponse = await fetch(unsignedUrl.toString());

    packages/http/schema.ts, line 65

    * All messages that can be sent over the task WebSocket (both directions).

  • Secrets

    Concern

    reads a credential or environment file.

    SECRETS_ENV_READ SECRETS_PATH_DOTENV

    packages/agent/llm/cloudflare.ts, line 97

    * apiToken: process.env.CF_AIG_API_TOKEN,

    .env.example, line 2

    # Copy this to .env for local development

    .env.example, line 3

    # Do not commit .env to version control

    Show more

    .gitignore, line 79

    # dotenv environment variable files

    .gitignore, line 80

    .env

    .gitignore, line 81

    .env.development.local

    .gitignore, line 82

    .env.test.local

    .gitignore, line 83

    .env.production.local

    examples/agui/README.md, line 8

    1. Set your API key in a `.env` file:

  • Agent instructions

    Pass

    No instruction to ignore earlier instructions or to hide a step.

  • Obfuscation

    Note

    a file was over the read cap and was not fully read.

    OBFUSCATION_FILE_OVER_READ_CAP

    deno.lock, line 1

    {

    examples/agui/ui/bun.lock, line 1

    {

  • Licence

    Pass

    A licence file is present (LICENSE.md).

  • Maintainer activity

    Pass

    The latest commit is within the last 365 days.

Get the full report on this tool, £49

Note

Hygiene check of commit 329ad94910ef. requests shell access. The manifest names this permission. can reach a host that is not written as a fixed address. reads a credential or environment file. a file was over the read cap and was not fully read.

Date and source

Date checked:

View source

github.com

Commit graded: 329ad94910efb9eabc25240fe9e672a2491c5032

This link goes to the original host. PlugVet does not host or check what you download from there, and installing it is your own decision and risk.

Read how this letter is chosen