np:eval

np:eval is a command for Claude Code from kayac/nepp-chan. It costs 30 tokens per session (3,229 once invoked), scanned A, original, AGPL-3.0.

An interactive evaluation command for scoring and displaying the answer quality of a knowledge agent. An evaluation checks whether an agent gives useful and correct answers.

In plain words
What is it for?
Running interactive tests and reviewing scores or visual results for a knowledge agent’s responses.
Why use it?
It helps reveal how well an agent answers questions instead of relying only on informal testing.

Command for Claude Code

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 commands/kayac/nepp-chan/np-eval
Clone the repo
git clone --depth 1 https://github.com/kayac/nepp-chan

Made for: Claude Code.

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 np:eval

README.md
[![agentmods](https://agentmods.dev/badge/commands/kayac/nepp-chan/np-eval.svg)](https://agentmods.dev/commands/kayac/nepp-chan/np-eval)
Your own site
<a href="https://agentmods.dev/commands/kayac/nepp-chan/np-eval"><img src="https://agentmods.dev/badge/commands/kayac/nepp-chan/np-eval.svg" alt="Measured on agentmods" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,229 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00030 $0.03229
Opus 5 $0.00015 $0.01614
Sonnet 5 $0.00006 $0.00646
Haiku 4.5 $0.00003 $0.00323

Measured 4d ago against content hash 8275a725d77c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

np:eval 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 4d 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.

.claude/commands/np:eval.md · 275 lines

The source is not reproduced here

Licensed AGPL-3.0

The repository is licensed AGPL-3.0, which this catalogue does not treat as permission to reproduce the file. Read it at the source.

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. 4d ago First seen · 275 lines · 30 tokens per session scan A 8275a725d77c

Subscribe to this mod's changes

np:eval is a command published in the GitHub repository kayac/nepp-chan (11 stars, last pushed 4d ago), licensed AGPL-3.0. It adds 30 tokens to every session and 3,229 once invoked, about $0.0002 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 2026-08-30.