cog-tester

cog-tester is an agent for Claude Code from cognitum-one/cognitum-claude-plugin. It costs 0 tokens per session (311 once invoked), scanned A, original, no licence file.

An automated test agent for a coding add-on called a cog. It runs checks, builds for ARM devices, installs the cog on a test seed through an MCP connection, tests a few output frames, and stops the test setup.

In plain words
What is it for?
Checking a cog’s code, testing ARM compilation, installing it on a seed, performing a small smoke test, and reporting each result.
Why use it?
It collects the main verification steps in one test loop and reports what passed or failed.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the @cognitum/cog-dev plugin — 5 skills, 5 commands, 4 agents shipped together

Good fit Checking a cog’s code, testing ARM compilation, installing it on a seed, performing a small smoke test, and reporting each result.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/cognitum-one/cognitum-claude-plugin/cog-tester
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Clone the repo
git clone --depth 1 https://github.com/cognitum-one/cognitum-claude-plugin

Made for: Claude Code.

Or install @cognitum/cog-dev, the plugin that ships this one along with the rest of its 5 skills, 5 commands, 4 agents.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for cog-tester

README.md
[![agentmods](https://agentmods.dev/badge/agents/cognitum-one/cognitum-claude-plugin/cog-tester/github.svg)](https://agentmods.dev/agents/cognitum-one/cognitum-claude-plugin/cog-tester)
Your own site
<a href="https://agentmods.dev/agents/cognitum-one/cognitum-claude-plugin/cog-tester"><img src="https://agentmods.dev/badge/agents/cognitum-one/cognitum-claude-plugin/cog-tester/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for cog-tester

Your own site · 80×15
<a href="https://agentmods.dev/agents/cognitum-one/cognitum-claude-plugin/cog-tester"><img src="https://agentmods.dev/badge/agents/cognitum-one/cognitum-claude-plugin/cog-tester.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 311 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00000 $0.00311
Opus 5 $0.00000 $0.00156
Sonnet 5 $0.00000 $0.00062
Haiku 4.5 $0.00000 $0.00031

Measured 10d ago against content hash 833186560e2a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

cog-tester scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

cog-dev/agents/cog-tester.md · 32 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 10d ago First seen · 32 lines · 0 tokens per session scan A 833186560e2a

Subscribe to this mod's changes

cog-tester is an agent published in the GitHub repository cognitum-one/cognitum-claude-plugin (3 stars, last pushed 2mo ago), with no licence file. It costs nothing until one of its globs matches a file; then it loads 311 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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