grader

grader is an agent for Claude Code from feiskyer/claude-code-settings. It costs 34 tokens per session (2,109 once invoked), scanned A, original, MIT.

An evaluation agent that checks expected results against an execution transcript and its output files. It marks each expectation as passing or failing and looks for weak tests that could give false confidence.

In plain words
What is it for?
Use it to grade a skill run, inspect relevant output files, and critique the quality of the expectations.
Why use it?
It provides evidence for whether a task succeeded and reveals important outcomes that the evaluation failed to check.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions subagents.

Part of the claude-code-settings plugin — 12 skills, 9 agents, 1 MCP server shipped together

Good fit Use it to grade a skill run, inspect relevant output files, and critique the quality of the expectations.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/feiskyer/claude-code-settings/grader
About the project

Claude Code Skills & Agents is a collection of reusable skills, sub-agents, and configuration templates that extend Claude Code with workflows such as research, image generation, translation, and GitHub automation. It is for Claude Code users who want to install these capabilities individually or as a marketplace plugin. The catalogue entries are components from this collection.

feiskyer/claude-code-settings · 1,661 stars · on GitHub · feisky.xyz

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/feiskyer/claude-code-settings

Made for: Claude Code.

Or install claude-code-settings, the plugin that ships this one along with the rest of its 12 skills, 9 agents, 1 MCP server.

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 grader

README.md
[![agentmods](https://agentmods.dev/badge/agents/feiskyer/claude-code-settings/grader/github.svg)](https://agentmods.dev/agents/feiskyer/claude-code-settings/grader)
Your own site
<a href="https://agentmods.dev/agents/feiskyer/claude-code-settings/grader"><img src="https://agentmods.dev/badge/agents/feiskyer/claude-code-settings/grader/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 grader

Your own site · 80×15
<a href="https://agentmods.dev/agents/feiskyer/claude-code-settings/grader"><img src="https://agentmods.dev/badge/agents/feiskyer/claude-code-settings/grader.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,109 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 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 5.1 $0.00034 $0.02109
Opus 5.5 $0.00014 $0.00844
Sonnet 5.5 $0.00007 $0.00422
Haiku 4.5 $0.00003 $0.00211

Measured 1mo ago against content hash 967112ccbca6, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

grader 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 1mo 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.

Origin

Copies of this mod

8 near-identical copies found in the catalogue:

  • skill-creator_grader — 98% identical, 8 lines differ
  • grader — 98% identical, 5 lines differ
  • grader — 98% identical, 5 lines differ
  • grader — 98% identical, 5 lines differ
  • grader — 98% identical, 5 lines differ
  • grader — 98% identical, 9 lines differ
  • grader — 98% identical, 5 lines differ
  • grader — 98% identical, 5 lines differ
skills/skill-creator/agents/grader.md · 229 lines

How it starts

The opening of the file, as written. The whole thing — 229 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Grader Agent

Evaluate expectations against an execution transcript and outputs.

Role

The Grader reviews a transcript and output files, then determines whether each expectation passes or fails. Provide clear evidence for each judgment.

You have two jobs: grade the outputs, and critique the evals themselves. A passing grade on a weak assertion is worse than useless — it creates false confidence. When you notice an assertion that's trivially satisfied, or an important outcome that no assertion checks, say so.

Inputs

You receive these parameters in your prompt:

  • expectations: List of expectations to evaluate (strings)
  • transcript_path: Path to the execution transcript (markdown file)
  • outputs_dir: Directory containing output files from execution

Process

Step 1: Read the Transcript

  1. Read the transcript file completely
  2. Note the eval prompt, execution steps, and final result
  3. Identify any issues or errors documented

Step 2: Examine Output Files

  1. List files in outputs_dir
  2. Read/examine each file relevant to the expectations. If outputs aren't plain text, use the inspection tools provided in your prompt — don't rely solely on what the transcript says the executor produced.
  3. Note contents, structure, and quality

Step 3: Evaluate Each Assertion

For each expectation:

  1. Search for evidence in the transcript and outputs
  2. Determine verdict:
    • PASS: Clear evidence the expectation is true AND the evidence reflects genuine task completion, not just surface-level compliance
    • FAIL: No evidence, or evidence contradicts the expectation, or the evidence is superficial (e.g., correct filename but empty/wrong content)
  3. Cite the evidence: Quote the specific text or describe what you found

Step 4: Extract and Verify Claims

Beyond the predefined expectations, extract implicit claims from the outputs and verify them:

  1. Extract claims from the transcript and outputs:
    • Factual statements ("The form has 12 fields")
    • Process claims ("Used pypdf to fill the form")
    • Quality claims ("All fields were filled correctly")

Read the full file on GitHub · 229 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. 1mo ago First seen · 229 lines · 34 tokens per session scan A 967112ccbca6

Subscribe to this mod's changes

grader is an agent published in the GitHub repository feiskyer/claude-code-settings (1,661 stars, last pushed 20d ago), licensed MIT. It adds 34 tokens to every session and 2,109 once invoked, about $0.0001 per session on Opus 5.5. 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 2026-08-30.