mcp-inspector

mcp-inspector is a skill for Claude Code, Codex from MCPJam/inspector. It costs 101 tokens per session (4,698 once invoked), scanned A, original, no licence file.

A guide to reading and using MCP inspection results. MCP, the Model Context Protocol, is a standard for connecting AI agents to tools, data resources, and prompts.

In plain words
What is it for?
Use it when probing MCP servers, checking their health and conformance, reviewing access controls, or debugging tools, resources, prompts, OAuth, and cross-app access.
Why use it?
It helps you interpret server checks and security findings without treating every diagnostic message as definitive.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

Good fit Use it when probing MCP servers, checking their health and conformance, reviewing access controls, or debugging tools, resources, prompts, OAuth, and cross-app access.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/mcpjam/inspector/mcp-inspector
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 MCPJam/inspector --skill mcp-inspector
Clone the repo
git clone --depth 1 https://github.com/MCPJam/inspector

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/mcpjam/inspector/mcp-inspector.svg)](https://agentmods.dev/skills/mcpjam/inspector/mcp-inspector)
Your own site
<a href="https://agentmods.dev/skills/mcpjam/inspector/mcp-inspector"><img src="https://agentmods.dev/badge/skills/mcpjam/inspector/mcp-inspector.svg" alt="Measured on agentmods" height="20"></a>
Per session 101 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,698 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: 1 finding, up to high

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 →

  • high Privilege Escalation · line 136
    Code accesses credential files (SSH keys, AWS credentials, etc.). This could indicate credential theft attempts.
    Fix: Remove references to credential paths. Use environment variables or secrets managers. For docs, use placeholder paths (e.g., /path/to/config). Never load .env or token files in production code paths.
How audits are shown
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 $0.00101 $0.04698
Opus 5 $0.00051 $0.02349
Sonnet 5 $0.00020 $0.00940
Haiku 4.5 $0.00010 $0.00470

Measured 8d ago against content hash 04f69f7a1ce5, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, 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 8d 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.

skills/mcp-inspector/SKILL.md · 212 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

Files

What ships with it

4 files 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. 8d ago First seen · 212 lines · 101 tokens per session scan A 04f69f7a1ce5

Subscribe to this mod's changes

mcp-inspector is a skill published in the GitHub repository MCPJam/inspector (2,189 stars, last pushed today), with no licence file. It adds 101 tokens to every session and 4,698 once invoked, about $0.0005 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.