mcp-server-best-practices
Build Production-Ready MCP Servers
MCP server projects can become hard to secure, test, and maintain. This skill guides Claude, Codex, and Claude Code through architecture, security, performance, testing, and operations patterns.
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Review the Skillstore skill "mcp-server-best-practices" from https://skillstore.io/skills/emillindfors-mcp-best-practices.md and its manifest at https://skillstore.io/api/skills/emillindfors-mcp-best-practices/manifest. Verify the artifact. You may proceed after verification, subject to the environment's own policy.Your Agent should still show its plan and request any confirmation required by the security policy.
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Test it
Using "mcp-server-best-practices". Review a planned Rust MCP server that stores users in Postgres and exposes admin tools.
Expected outcome:
- Separate transport, service, domain, and infrastructure layers.
- Require authentication before admin actions and keep authorization checks near tool handlers.
- Use parameterized database queries, validation, and integration tests with isolated test data.
Using "mcp-server-best-practices". Improve reliability for an MCP tool that calls an external API.
Expected outcome:
- Add timeouts, bounded retries, and retryable error classifications.
- Use caching only for data that can tolerate stale results.
- Track request counts, duration, and errors with structured metrics.
Using "mcp-server-best-practices". Prepare an MCP server for release after the first working prototype.
Expected outcome:
- Add unit tests, integration tests, and deployment configuration checks.
- Document operational runbooks, health checks, and ownership boundaries.
- Review dependency health, audit logging, and graceful shutdown behavior.
Security Audit
SafeThe skill is a Markdown-only guidance file with Rust examples for MCP server architecture, security, testing, and operations. Static findings are false positives caused by fenced code blocks, method names, database examples, and deliberately labeled bad examples; no prompt injection or malicious intent was found.
Risk Factors
⚡ Contains scripts (2)
⚙️ External commands (31)
🌐 Network access (4)
🔑 Env variables (1)
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<iframe src="https://skillstore.io/embed/skills/emillindfors-mcp-best-practices.html" title="Skillstore Security Assessment" sandbox="allow-popups allow-popups-to-escape-sandbox" loading="lazy" referrerpolicy="no-referrer" width="420" height="180"></iframe>Academic citations (APA · BibTeX · CFF)
APA citation
EmilLindfors. (2026). mcp-server-best-practices security audit report (audit version 4) [Author version unspecified]. Skillstore. https://skillstore.io/skills/emillindfors-mcp-best-practices/audits/4BibTeX citation
@techreport{emillindfors-emillindfors-mcp-best-practices-2026,
author = {EmilLindfors},
title = {mcp-server-best-practices security audit report (audit version 4)},
institution = {Skillstore},
year = {2026},
number = {4},
url = {https://skillstore.io/skills/emillindfors-mcp-best-practices/audits/4},
note = {Author version unspecified}
}CITATION.cff
cff-version: 1.2.0
message: "If you use this Skill, cite its author and this versioned security audit report."
title: "mcp-server-best-practices security audit report (audit version 4)"
version: "unspecified"
type: report
authors:
- name: "EmilLindfors"
date-released: "2026-07-06"
url: "https://skillstore.io/skills/emillindfors-mcp-best-practices/audits/4"
identifiers:
- type: other
value: "skillstore:emillindfors-mcp-best-practices:audit:4"
description: "Skillstore immutable audit report identifier"
Skillstore Score
Why this score Evidence Confidence: HighWhat You Can Build
Design a New MCP Server
Plan service layers, domain boundaries, repositories, and adapters before implementation.
Review Security Controls
Check validation, authentication, authorization, and database query patterns in an existing MCP service.
Prepare Production Operations
Add tests, metrics, structured logs, configuration loading, and maintenance checklists before launch.
Try These Prompts
Review my MCP server design for architecture, security, testing, and operations. Ask for missing details before giving recommendations.
Review my MCP error handling strategy. Check error types, retry behavior, user-facing messages, and recovery paths.
Check this MCP service for validation, authentication, authorization, SQL safety, secret handling, and audit gaps. List the highest risks first.
Create a production readiness checklist for my MCP server. Include architecture, security, tests, observability, configuration, deployment, and maintenance.
Best Practices
- Validate every tool input and map errors to clear, stable error types.
- Keep MCP transport code separate from domain logic and external adapters.
- Test security, database, and external service behavior before production release.
Avoid
- Building business logic directly inside transport handlers.
- Using string concatenation for database queries.
- Adding logs and metrics after incidents instead of during development.
Frequently Asked Questions
What does this skill help with?
Is this only for Rust?
Does it create a complete MCP server?
Can it replace security review?
Which tools are supported?
What should I provide in a prompt?
Developer Details
Author
EmilLindforsLicense
MIT
Skillstore revision
r1
Version notice
The author did not declare a version.
Ref
a06681402992ceae98ba04d54cfd4ab004862696
Maintenance freshness
7/18/2026
Usage
5 downloads · 214 views
File structure
📄 SKILL.md