neeko: Skill for Claude Code

.agents/skills/trellis-check/SKILL.md

trellis-check is a skill for Claude Code, Codex from tincopper/neeko. It costs 54 tokens per session (1,050 once invoked), scanned A, original, Apache-2.0.

A broad code-quality review workflow for recently changed code. It checks requirements, formatting, types, tests, data flow, reuse, and consistency across project layers.

In plain words
What is it for?
Use it after implementing changes or during a long task to inspect the diff, read applicable specifications, run project checks, and review the result against quality gates.
Why use it?
It gathers the checks needed before committing and can reveal problems that a single test or linter would miss.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents); mentions AGENTS.md.

This is tincopper/neeko's own configuration. It tells Claude Code and Codex how to work on neeko itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything neeko configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is python3 ./.trellis/scripts/get_context.py --mode packages.

Reuse

Borrowing it

Nothing to install: this file belongs to tincopper/neeko. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/tincopper/neeko/main/.agents/skills/trellis-check/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/tincopper/neeko

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 trellis-check

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/tincopper/neeko/trellis-check"><img src="https://agentmods.dev/badge/skills/tincopper/neeko/trellis-check.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 54 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,050 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00054 $0.01050
Opus 5.5 $0.00022 $0.00420
Sonnet 5.5 $0.00011 $0.00210
Haiku 4.5 $0.00005 $0.00105

Measured yesterday against content hash 3970af926767, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

trellis-check 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.

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.

.agents/skills/trellis-check/SKILL.md · 124 lines

How it starts

The opening of the file, as written. The whole thing — 124 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Code Quality Check

Comprehensive quality verification for recently written code. Combines spec compliance, cross-layer safety, and pre-commit checks.


Step 1: Identify What Changed

git diff --name-only HEAD
git status

Step 2: Read Task Artifacts and Applicable Specs

Read the current task artifacts in order:

  • prd.md
  • design.md if present
  • implement.md if present
python3 ./.trellis/scripts/get_context.py --mode packages

For each changed package/layer, read the spec index and follow its Quality Check section:

cat .trellis/spec/<package>/<layer>/index.md

Read the specific guideline files referenced — the index is a pointer, not the goal.

Step 3: Run Project Checks

Run the project's dev-loop check command — the fast one, not the full gate. Which command that is, is declared by the project (root AGENTS.md, "AI Assistant Workflow Notes" — this repo: pnpm check:quick). Fix any failures before proceeding.

Do NOT run the full gate (suite-wide lint + all unit tests) at this step: it is minute-scale and belongs to wrap-up / pre-push. Run it only when the user explicitly asks, or when the change plausibly crosses module boundaries that the fast check cannot cover.

Frequency matters as much as which command. This is a wrap-up action, not a per-edit one: run it once over the accumulated change set, not once per file. Re-running it on an unchanged surface cannot find anything new. And since that command already contains the project's lint / test / type-check, never run those standalone "on top of it" — the only exception is red/green feedback during TDD, where a single test file is an observation, not a gate.

Step 4: Review Against Checklist

Code Quality

  • Linter passes?
  • Type checker passes (if applicable)?
  • Tests pass?
  • No debug logging left in?
  • No suppressed warnings or type-safety bypasses?

Test Coverage

  • New function → unit test added?
  • Bug fix → regression test added?
  • Changed behavior → existing tests updated?

Read the full file on GitHub · 124 lines

Files

What ships with it

1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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 Changed · +6 lines 3970af926767
  2. 5d ago Changed · +8 lines 632340d170f7
  3. 1mo ago First seen · 110 lines · 54 tokens per session scan A c5bca5499ae9

Subscribe to this mod's changes

trellis-check is a skill published in the GitHub repository tincopper/neeko (12 stars, last pushed yesterday), licensed Apache-2.0. It adds 54 tokens to every session and 1,050 once invoked, about $0.0002 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 2026-08-31.

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