ct-grade

ct-grade is a skill for Claude Code, Codex from kryptobaseddev/cleo. It costs 188 tokens per session (2,013 once invoked), scanned A, original, MIT.

A grading guide that evaluates coding-agent sessions against five behavior checks and produces a score, letter grade, and diagnostic flags.

In plain words
What is it for?
Use it to grade completed sessions, run evaluation scenarios, compare behavior over time, and inspect protocol compliance.
Why use it?
It helps identify process problems such as skipped discovery, missing session endings, or poor error handling.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/kryptobaseddev/cleo/ct-grade
Any agent
npx skills add kryptobaseddev/cleo --skill ct-grade
Clone the repo
git clone --depth 1 https://github.com/kryptobaseddev/cleo

Made for: Claude Code, Codex.

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 ct-grade

README.md
[![agentmods](https://agentmods.dev/badge/skills/kryptobaseddev/cleo/ct-grade.svg)](https://agentmods.dev/skills/kryptobaseddev/cleo/ct-grade)
Your own site
<a href="https://agentmods.dev/skills/kryptobaseddev/cleo/ct-grade"><img src="https://agentmods.dev/badge/skills/kryptobaseddev/cleo/ct-grade.svg" alt="Measured on agentmods" height="20"></a>
Per session 188 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,013 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original 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 $0.00188 $0.02013
Opus 5 $0.00094 $0.01007
Sonnet 5 $0.00038 $0.00403
Haiku 4.5 $0.00019 $0.00201

Measured yesterday against content hash 1cdbd30e8f98, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

ct-grade 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 yesterday.

The scan reads SKILL.md. This mod also ships 9 executable files (eval-viewer/generate_grade_review.py, eval-viewer/generate_grade_viewer.py, eval-viewer/generate_review.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

packages/skills/skills/ct-grade/SKILL.md · 211 lines

How it starts

The opening of the file, as written. The whole thing — 211 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Session Grading Guide

Session grading evaluates agent behavioral patterns against the CLEO protocol. It reads the audit log for a completed session and applies a 5-dimension rubric to produce a score (0-100), letter grade (A-F), and diagnostic flags.

When to Use Grade Mode

Use grading when you need to:

  • Evaluate how well an agent followed CLEO protocol during a session
  • Identify behavioral anti-patterns (skipped discovery, missing session.end, etc.)
  • Track improvement over time across multiple sessions
  • Validate that orchestrated subagents followed protocol

Grading requires audit data. Sessions must be started with the --grade flag to enable audit log capture.

Starting a Grade Session

CLI

# Start a session with grading enabled
ct session start --scope epic:T001 --name "Feature work" --grade

# The --grade flag enables detailed audit logging
# All CLI operations are recorded for later analysis

Running Scenarios

The grading rubric evaluates 5 behavioral scenarios that map to protocol compliance:

1. Fresh Discovery

Tests whether the agent checks existing sessions and tasks before starting work. Evaluates session.list and tasks.find calls at session start.

2. Task Hygiene

Tests whether task creation follows protocol: descriptions provided, parent existence verified before subtask creation, no duplicate tasks.

3. Error Recovery

Tests whether the agent handles errors correctly: follows up E_NOT_FOUND with recovery lookups (tasks.find), avoids duplicate creates after failures.

4. Full Lifecycle

Tests session discipline end-to-end: session listed before task ops, session properly ended, CLI usage patterns.

5. Multi-Domain Analysis

Tests progressive disclosure: use of admin.help or skill lookups, use of progressive disclosure for programmatic access.

Evaluating Results

CLI

# Grade a specific session
ct grade <sessionId>

# List all past grade results
ct grade --list

Understanding the 5 Dimensions

Read the full file on GitHub · 211 lines

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. yesterday First seen · 211 lines · 188 tokens per session scan A 1cdbd30e8f98

Subscribe to this mod's changes

ct-grade is a skill published in the GitHub repository kryptobaseddev/cleo (160 stars, last pushed 15d ago), licensed MIT. It adds 188 tokens to every session and 2,013 once invoked, about $0.0009 per session on Opus 5. 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 2026-09-03.