mcp-server-testing SKILL.md skillA
mcp-server-testing from fabioc-aloha/alex_skill_mall is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add fabioc-aloha/alex_skill_mall/mcp-server-testing@git:20260914.0426f9ePins git:20260914.0426f9e in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- fabioc-aloha/alex_skill_mall
- Path
plugins/ai-agents/mcp-toolkit/skills/mcp-server-testing/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260914.0426f9e, committed Sep 14, 2026
- Size
- 4,111 bytes
- Repository stars
- 5
- License
- MIT
Prove an MCP server works and that an agent can actually use it. Covers the Inspector, a ten-question evaluation set, and the difference between responding correctly and being usable.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Test an MCP Server Two different questions. **Does it respond correctly?** is testing. **Can an agent accomplish a task with it?** is evaluation. A server can pass the first completely and fail the second, and the second is the one users feel. ## The Inspector An interactive client that lists your tools, calls them with arguments you supply, and shows the raw protocol traffic. ```bash # TypeScript npm run build && npx @modelcontextprotocol/inspector ./dist/server.js # Python python -m py_compile your_server.py npx @modelcontextprotocol/inspector -- python your_server.py # Any executable npx @modelcontextprotocol/inspector /path/to/server ``` If a tool does not appear in the Inspector, no agent will see it either. Check this before suspecting anything subtler. ## Pre-Ship Checks - Every tool has a description saying **when** to use it, not only what it does - Errors return actionable text with `isError: true` - I/O is async, and paginated wherever results can grow - Nothing writes to stdout on a stdio server - Annotations are declared, especially `destructiveHint` - Input schemas carry constraints, so bad input fails at the boundary ## Evaluation …
Read the whole file at its exact version.
How to install
mdr add fabioc-aloha/alex_skill_mall/mcp-server-testing@sha256:098d5c72222ebee4The line at the top of this page pins the label git:20260914.0426f9e, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_uspoau6yiuqcqxtl)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 14, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (4111 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
fabioc-aloha/alex_skill_mall · 5 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_uspoau6yiuqcqxtl GET https://markdownregistry.com/api/v1/resolve?ref=fabioc-aloha/alex_skill_mall/mcp-server-testing GET https://markdownregistry.com/api/v1/blob/098d5c72222ebee40a6c9a96a831251656c0c0d3fbd00786a78f6083d825910a
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.