mcp-builder SKILL.md skillA
mcp-builder from martineserios/thebrana is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add martineserios/thebrana/mcp-builder@git:20260610.c15894fPins git:20260610.c15894f in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- martineserios/thebrana
- Path
system/skills/mcp-builder/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260610.c15894f, committed Jun 10, 2026
- First version recorded
- Apr 6, 2026
- Size
- 13,015 bytes
- Repository stars
- 3
- License
- MIT
MCP server development guide — build, test, and deploy MCP servers.
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 To create high-quality MCP (Model Context Protocol) servers that enable LLMs to effectively interact with external services, use this skill. An MCP server provides tools that allow LLMs to access external services and APIs. The quality of an MCP server is measured by how well it enables LLMs to accomplish real-world tasks using the tools provided. --- # Process ## 🚀 High-Level Workflow Creating a high-quality MCP server involves four main phases: ### Phase 1: Deep Research and Planning #### 1.1 Understand Agent-Centric Design Principles Before diving into implementation, understand how to design tools for AI agents by reviewing these principles: **Build for Workflows, Not Just API Endpoints:** - Don't simply wrap existing API endpoints - build thoughtful, high-impact workflow tools - Consolidate related operations (e.g., `schedule_event` that both checks availability and creates event) - Focus on tools that enable complete tasks, not just individual API calls - Consider what workflows agents actually need to accomplish **Optimize for Limited Context:** - Agents have constrained context windows - make every token count …
Read the whole file at its exact version.
How to install
mdr add martineserios/thebrana/mcp-builder@sha256:7cd92f8d765abd99The line at the top of this page pins the label git:20260610.c15894f, 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_ypdq5v2bxgepssx4)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 5 versions of this file, between Apr 6, 2026 and Jun 10, 2026, about one every 16 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260610.c15894f latest | 2026-06-10 | c15894f | 13,015 B | A | view · diff |
| git:20260610.be2a852 | 2026-06-10 | be2a852 | 694 B | A | view · diff |
| git:20260530.9553f5d | 2026-05-30 | 9553f5d | 479 B | A | view · diff |
| git:20260508.cdc4814 | 2026-05-08 | cdc4814 | 466 B | A | view · diff |
| git:20260406.d0a97ca | 2026-04-06 | d0a97ca | 369 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 (13015 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
martineserios/thebrana · 3 stars · license MIT · pushed 2026-11-01 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_ypdq5v2bxgepssx4 GET https://markdownregistry.com/api/v1/resolve?ref=martineserios/thebrana/mcp-builder GET https://markdownregistry.com/api/v1/blob/7cd92f8d765abd99d705c93f5dba23401b52eb76816969740a51add4153a023f
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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