cejel-scan

cejel-scan is a skill for Claude Code from BargLabs/cejel. It costs 81 tokens per session (1,055 once invoked), scanned A, original, AGPL-3.0.

A repository scan that uses Cejel to score engineering-trust signals and display the resulting certificate. It is intended for questions about tests, CI, production readiness, and whether AI-written code has supporting evidence.

In plain words
What is it for?
Use it to assess a repository's trust score, certificate, testing, CI discipline, and production-readiness signals.
Why use it?
It gives a structured way to examine whether a codebase's claims are backed by tests and continuous integration, rather than relying only on appearances or assertions.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter.

Part of the cejel plugin — 1 skill, 1 MCP server shipped together

Good fit Use it to assess a repository's trust score, certificate, testing, CI discipline, and production-readiness signals.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/barglabs/cejel/cejel-scan
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.

Any agent
npx skills add BargLabs/cejel --skill cejel-scan
Clone the repo
git clone --depth 1 https://github.com/BargLabs/cejel

Made for: Claude Code.

Or install cejel, the plugin that ships this one along with the rest of its 1 skill, 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 cejel-scan

README.md
[![agentmods](https://agentmods.dev/badge/skills/barglabs/cejel/cejel-scan/github.svg)](https://agentmods.dev/skills/barglabs/cejel/cejel-scan)
Your own site
<a href="https://agentmods.dev/skills/barglabs/cejel/cejel-scan"><img src="https://agentmods.dev/badge/skills/barglabs/cejel/cejel-scan/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 cejel-scan

Your own site · 80×15
<a href="https://agentmods.dev/skills/barglabs/cejel/cejel-scan"><img src="https://agentmods.dev/badge/skills/barglabs/cejel/cejel-scan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 81 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,055 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 $0.00081 $0.01055
Opus 5.5 $0.00032 $0.00422
Sonnet 5.5 $0.00016 $0.00211
Haiku 4.5 $0.00008 $0.00105

Measured 9d ago against content hash 0cb5cffc4414, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cejel-scan 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 9d 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.

plugins/cejel/skills/cejel-scan/SKILL.md · 73 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. 9d ago First seen · 73 lines · 81 tokens per session scan A 0cb5cffc4414

Subscribe to this mod's changes

cejel-scan is a skill published in the GitHub repository BargLabs/cejel (2 stars, last pushed yesterday), licensed AGPL-3.0. It adds 81 tokens to every session and 1,055 once invoked, about $0.0003 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 2026-10-08.

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