mcp-builder
No security findings. Scanned 1 time, most recently 2026-02-01.
Second scanner: NVIDIA SkillSpector
The two scanners disagree: Cisco found nothing and SkillSpector says do not install. One of them has a blind spot here; read the skill before trusting either. How the two scanners compare across the whole corpus: Two scanners, one corpus.
What this skill does
Guide for creating 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).
- Package
- 10 files, 119 KB
- SKILL.md
- 1094 words, 12+ sections
- Code
- Python (2)
- License
- Complete terms in LICENSE.txt
SKILL.md covers: MCP Server Development Guide · Overview · Process · 🚀 High-Level Workflow · Phase 1: Deep Research and Planning · Phase 2: Implementation · Phase 3: Review and Test · Phase 4: Create Evaluations · Reference Files · 📚 Documentation Library · Core MCP Documentation (Load First) · SDK Documentation (Load During Phase 1/2)
Findings
No findings. SAFE
What is in the package
| File | Kind | Size |
|---|---|---|
LICENSE.txt | doc | 11 KB |
SKILL.md | doc | 8.9 KB |
reference/evaluation.md | doc | 21 KB |
reference/mcp_best_practices.md | doc | 7.2 KB |
reference/node_mcp_server.md | doc | 28 KB |
reference/python_mcp_server.md | doc | 25 KB |
scripts/connections.py | script | 4.8 KB |
scripts/evaluation.py | script | 12 KB |
scripts/example_evaluation.xml | config | 1.2 KB |
scripts/requirements.txt | doc | 29 B |
External hosts referenced
raw.githubusercontent.com modelcontextprotocol.io www.apache.org
Hostnames that appear in the skill's files. Referencing a host is not a finding; compare against the findings above and the skill's stated purpose.
Environment variables referenced
API_BASE_URL API_URL EXAMPLE_API_KEY PORT TRANSPORT
Package contents recorded 2026-10-22 at commit 69c0b1a06741. The scan above ran against the version current at scan time; the two can differ if the skill has since been updated.
What we checked
- Static analyzer. Pattern rules over SKILL.md and bundled files: known-bad commands, exfiltration URLs, secrets, obfuscation.
- Behavioral analyzer. Checks what the skill asks the agent to do against what its description claims it does.
- Llm analyzer. A language model reads the skill and reports intent-level issues the rules cannot express.
- Trigger analyzer. Looks for instructions that fire on conditions the user did not ask for.
What we did not check
- Runtime behaviour. The skill was not executed; findings come from reading its files.
- Anything fetched at install or run time, including remote scripts, package dependencies, and URLs the skill tells the agent to open.
- Content the analyzers cannot read: images, binaries, and some non-English text.
- Known scanner bypass classes. See the methodology and limitations page.
Sources
- Repository: https://github.com/anthropics/skills/tree/main/skills/mcp-builder
- Raw scan result: skills-mcp-builder-scan.json
- Badge for your README:
- Request a re-scan