mcp-builder SKILL.md skillA
mcp-builder from akillness/jeo-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add akillness/jeo-skills/mcp-builder@v1.0Pins v1.0 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- akillness/jeo-skills
- Path
.agent-skills/mcp-builder/SKILL.md- Versions recorded
- 2
- Latest version
- v1.0, committed Sep 20, 2026
- First version recorded
- Sep 1, 2026
- Size
- 9,573 bytes
- Repository stars
- 52
- License
- none declared
Build production MCP (Model Context Protocol) servers that let LLMs drive an external API through well-designed tools, in TypeScript (MCP SDK) or Python (FastMCP). Route one request to research and planning, tool design, transport choice, implementation, security review, or evaluation. Use when the user wants to wrap an API as MCP tools, name and shape those tools, choose between stdio and streamable HTTP, decide tools vs resources vs prompts, write a Server Card and publish to the MCP…
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 Builder Build an MCP server whose quality is measured by one thing: **can an LLM actually accomplish real tasks with it?** Not endpoint coverage, not schema elegance. A server that mirrors 40 REST endpoints and leaves the model unable to complete a workflow has failed. The most common failure is treating this as an API-wrapping exercise. Tool naming, response shape, error text, and pagination are all *agent ergonomics* problems, and they decide whether the server works. Bundled from `anthropics/skills` commit `3b3fad96af16a10759d930941b4520ba0c40edae` (2026-08-21), Apache-2.0. Upstream ships `skills/mcp-builder/LICENSE.txt`; the repository root carries no SPDX license, so the per-skill license is the operative one — see [upstream and licensing](references/upstream-and-licensing.md). ## When to use this skill - Wrap an external API or service as an MCP server. - Decide tool granularity: comprehensive endpoint coverage versus workflow tools. - Name and shape tools so an agent picks the right one unprompted. - Choose a transport and a state model. - Diagnose a server whose tools the model misuses or cannot chain. …
Read the whole file at its exact version.
How to install
mdr add akillness/jeo-skills/mcp-builder@sha256:dd3be44e49e65300The line at the top of this page pins the label v1.0, 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_pgcipik6lipnpqrm)
5 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 2 versions of this file, between Sep 1, 2026 and Sep 20, 2026, about one every 19 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| v1.0 latest | 2026-09-20 | 2a2b733 | 9,573 B | A | view · diff |
| v1.0 | 2026-09-01 | 5a9aa07 | 9,275 B | A | view |
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 (9573 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
akillness/jeo-skills · 52 stars · license none declared · pushed 2026-11-05 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_pgcipik6lipnpqrm GET https://markdownregistry.com/api/v1/resolve?ref=akillness/jeo-skills/mcp-builder GET https://markdownregistry.com/api/v1/blob/dd3be44e49e65300ccf5fdcffde59ead69037408efc2292d6f5da83b3366e9e8
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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