What is prompt-review?

A review skill for checking system prompts against prompt-writing practices. A system prompt is the instruction that sets an AI model's role, rules, and behaviour.

Use it when explicitly asked to review, audit, or check a system prompt.

It helps find issues in prompts, including unclear role instructions, weak examples, prompt-injection risks, caching problems, and compatibility concerns.

How vijayanan6/mcp-project configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to vijayanan6/mcp-project. 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/vijayanan6/mcp-project/main/.claude/skills/prompt-review/SKILL.md

Clone the repo

git clone --depth 1 https://github.com/vijayanan6/mcp-project

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.

README.md

[![agentmods](https://agentmods.dev/badge/skills/vijayanan6/mcp-project/prompt-review/github.svg)](https://agentmods.dev/skills/vijayanan6/mcp-project/prompt-review)

Your own site

<a href="https://agentmods.dev/skills/vijayanan6/mcp-project/prompt-review"><img src="https://agentmods.dev/badge/skills/vijayanan6/mcp-project/prompt-review/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.

Your own site · 80×15

<a href="https://agentmods.dev/skills/vijayanan6/mcp-project/prompt-review"><img src="https://agentmods.dev/badge/skills/vijayanan6/mcp-project/prompt-review.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,637 The whole file, excluding the scripts and references it only reads on demand.

Security scan B 1 finding. 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.

Model	Per session	Once invoked
Fable 5.1	$0.00072	$0.01637
Opus 5.5	$0.00029	$0.00655
Sonnet 5.5	$0.00014	$0.00327
Haiku 4.5	$0.00007	$0.00164

Measured 2mo ago against content hash 27a3b84796e9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade B, and why

prompt-review scanned grade B with 1 finding 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 2mo 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.

Instruction-override phrasingmediumPrompt injection

Text telling the model to disregard its earlier instructions or safety rules is the shape of a prompt injection, whoever wrote it.

- Would a malicious string embedded in retrieved content (e.g. "ignore previous instructions...") be distinguishable from a real instruction under the current prompt?

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

.claude/skills/prompt-review/SKILL.md · 126 lines

The source is not reproduced here

No licence file

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.

2mo ago First seen · 126 lines · 72 tokens per session scan B 27a3b84796e9

Subscribe to this mod's changes

prompt-review is a skill published in the GitHub repository vijayanan6/mcp-project (0 stars, last pushed 5d ago), with no licence file. It adds 72 tokens to every session and 1,637 once invoked, about $0.0003 per session on Opus 5.5. A static security scan graded it B with 1 finding (instruction-override phrasing). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

Data and AI Prompting

prompt-review next to 6 skills from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
prompt-reviewvijayanan6/mcp-project	Skill	0	5d ago	none	B	72	Claude Code
llm-app-patternsdavila7/claude-code-templates	Skill	33k	yesterday	MIT	A	54	Claude Code, Codex
prompt-engineerJeffallan/claude-skills	Skill	12k	7d ago	MIT	A	93	Claude Code
prompt-optimizationlangwatch/langwatch	Skill	5.0k	yesterday	Apache-2.0	A	105	Claude Code, Codex
omh-model-optimizationrlaope/oh-my-hermes	Skill	5.2k	yesterday	MIT	A	84	Claude Code, Codex
ideogram4digitalsamba/claude-code-video-toolkit	Skill	2.5k	yesterday	MIT	A	99	Claude Code
prompt-library-for-startupsaws/agent-toolkit-for-aws	Skill	3.4k	yesterday	Apache-2.0	A	228	Claude Code

mcp-project: Skill for Claude Code

Borrowing it

Wrote this? Show the measurements

What it costs to keep this loaded

Grade B, and why

Instruction-override phrasingmediumPrompt injection

The source is not reproduced here

No licence file

What this file has done since we first saw it

prompt-review compared with skills from other repositories