manifest-validation

manifest-validation is a skill for Claude Code from LiorCohen/sdd. It costs 15 tokens per session (2,300 once invoked), scanned A, original, no licence file.

A checker for plugin and marketplace manifest files against the official Claude Code format.

In plain words
What is it for?
Use it when creating or reviewing Claude Code plugin manifests and marketplace metadata.
Why use it?
It catches manifest entries that do not follow the required specification before they cause installation or listing problems.

Skill for Claude Code

Written for Claude Code: installed under .claude/.

Good fit Use it when creating or reviewing Claude Code plugin manifests and marketplace metadata.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/liorcohen/sdd/manifest-validation
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 LiorCohen/sdd --skill manifest-validation
Clone the repo
git clone --depth 1 https://github.com/LiorCohen/sdd

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 manifest-validation

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/liorcohen/sdd/manifest-validation"><img src="https://agentmods.dev/badge/skills/liorcohen/sdd/manifest-validation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 15 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,300 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 $0.00015 $0.02300
Opus 5 $0.00008 $0.01150
Sonnet 5 $0.00003 $0.00460
Haiku 4.5 $0.00002 $0.00230

Measured 9d ago against content hash fe765f08c497, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

manifest-validation 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.

.claude/skills/manifest-validation/SKILL.md · 264 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

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 · 264 lines · 15 tokens per session scan A fe765f08c497

Subscribe to this mod's changes

manifest-validation is a skill published in the GitHub repository LiorCohen/sdd (43 stars, last pushed 6mo ago), with no licence file. It adds 15 tokens to every session and 2,300 once invoked, about $0.0001 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.