raindrop-mcp: Skill for Claude Code

.github/skills/mcp-inspector/SKILL.md

mcp-inspector is a skill for Claude Code, Codex from adeze/raindrop-mcp. It costs 15 tokens per session (384 once invoked), scanned A, original, MIT.

A skill for inspecting and debugging MCP servers with the MCP Inspector command-line tool. MCP is a protocol that lets an agent connect to external tools and data sources.

In plain words
What is it for?
Listing MCP tools, sending protocol checks, inspecting traffic, and debugging local or HTTP MCP servers.
Why use it?
It helps verify which tools a server exposes and inspect how it responds when something is not working.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

This is adeze/raindrop-mcp's own configuration. It tells Claude Code and Codex how to work on raindrop-mcp 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 raindrop-mcp configures →

Needs its repository: it runs a file that does not travel with it, so clone the repository first. The line is npx -y @modelcontextprotocol/inspector --cli node build/index.js --method tools/list.

Reuse

Borrowing it

Nothing to install: this file belongs to adeze/raindrop-mcp. 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/adeze/raindrop-mcp/master/.github/skills/mcp-inspector/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/adeze/raindrop-mcp

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 mcp-inspector

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/adeze/raindrop-mcp/mcp-inspector"><img src="https://agentmods.dev/badge/skills/adeze/raindrop-mcp/mcp-inspector.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 384 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 warn 7 Sept 2026
SkillSpector: 6 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium MCP Rug Pull · line 13
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 14
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 24
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 30
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 39
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
  • medium MCP Rug Pull · line 45
    npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.
    Fix: Pin the version: npx @scope/[email protected]
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 $0.00015 $0.00384
Opus 5 $0.00008 $0.00192
Sonnet 5 $0.00003 $0.00077
Haiku 4.5 $0.00002 $0.00038

Measured 9d ago against content hash deb2a0683f53, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

mcp-inspector 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.

.github/skills/mcp-inspector/SKILL.md · 58 lines

What it actually says

MCP Inspector Skill

Guidelines for using the MCP Inspector tool in CLI mode for protocol inspection, debugging, and tool listing in a VS Code environment.

Prerequisites

  • Ensure you have Node.js and npx installed.
  • Install MCP Inspector: npx -y @modelcontextprotocol/inspector --help
  • Build your MCP server (e.g., bun run build or equivalent).

Usage Examples

List Available Tools

Run the following command in your VS Code terminal:

npx -y @modelcontextprotocol/inspector --cli node build/index.js --method tools/list

Send a Protocol Request (e.g., ping)

npx -y @modelcontextprotocol/inspector --cli node build/index.js --method ping

Debugging and Inspection

  • Use Inspector CLI to wrap your MCP server and inspect protocol traffic.
  • Example for STDIO server:
npx -y @modelcontextprotocol/inspector node build/index.js
  • For HTTP server:
npx -y @modelcontextprotocol/inspector node build/server.js

Tips

  • Use Inspector CLI flags for advanced filtering, logging, and output formatting. See Inspector documentation for details.
  • Integrate Inspector CLI commands into your VS Code tasks or launch configurations for automated inspection and debugging.
  • Use Vitest or your preferred test runner to automate CLI checks (see tests/inspector.test.ts for examples).

References

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 · 58 lines · 15 tokens per session scan A deb2a0683f53

Subscribe to this mod's changes

mcp-inspector is a skill published in the GitHub repository adeze/raindrop-mcp (183 stars, last pushed 1mo ago), licensed MIT. It adds 15 tokens to every session and 384 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.

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