building-mcp-servers SKILL.md skillA
building-mcp-servers from mjunaidca/mjs-agent-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add mjunaidca/mjs-agent-skills/building-mcp-servers@git:20251221.e60e67dPins git:20251221.e60e67d in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- mjunaidca/mjs-agent-skills
- Path
.claude/skills/building-mcp-servers/SKILL.md- Versions recorded
- 1
- Latest version
- git:20251221.e60e67d, committed Dec 21, 2025
- Size
- 5,550 bytes
- Repository stars
- 28
- License
- none declared
Guides creation of high-quality MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. Use when building MCP servers to integrate external APIs or services, whether in Python (FastMCP) or Node/TypeScript (MCP SDK). Covers tool design, authentication, Docker deployment, and evaluation creation. NOT when consuming existing MCP servers (use the server directly).
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
# MCP Server Development Guide ## Overview Create MCP (Model Context Protocol) servers that enable LLMs to interact with external services through well-designed tools. The quality of an MCP server is measured by how well it enables LLMs to accomplish real-world tasks. --- ## High-Level Workflow Creating a high-quality MCP server involves four main phases: ### Phase 1: Deep Research and Planning #### 1.1 Understand Modern MCP Design **API Coverage vs. Workflow Tools:** Balance comprehensive API endpoint coverage with specialized workflow tools. When uncertain, prioritize comprehensive API coverage. **Tool Naming and Discoverability:** Use consistent prefixes (e.g., `github_create_issue`, `github_list_repos`) and action-oriented naming. **Context Management:** Design tools that return focused, relevant data. Support filtering/pagination. **Actionable Error Messages:** Error messages should guide agents toward solutions with specific suggestions. #### 1.2 Study MCP Protocol Documentation Start with the sitemap: `https://modelcontextprotocol.io/sitemap.xml` Fetch pages with `.md` suffix (e.g., `https://modelcontextprotocol.io/specification/draft.md`). …
Read the whole file at its exact version.
How to install
mdr add mjunaidca/mjs-agent-skills/building-mcp-servers@sha256:8c50fb5acfb7fd2eThe line at the top of this page pins the label git:20251221.e60e67d, 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_45gicev7t4e6teum)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Dec 21, 2025.
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 (5550 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
mjunaidca/mjs-agent-skills · 28 stars · license none declared · pushed 2026-08-12 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_45gicev7t4e6teum GET https://markdownregistry.com/api/v1/resolve?ref=mjunaidca/mjs-agent-skills/building-mcp-servers GET https://markdownregistry.com/api/v1/blob/8c50fb5acfb7fd2ebc39426ce678d1ceef3f266a4f374edf9bd90917376df4bc
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.
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