Skills mcp-builder

📦

mcp-builder

Name: mcp-builder
Author: anthropics

Content revision r1 Safe 🌐 Network access🔑 Env variables⚙️ External commands

Build MCP Servers for AI Tools

Building reliable MCP servers requires protocol knowledge, secure API design, and strong evaluation practices. This skill provides structured guidance for planning, coding, testing, and improving MCP integrations.

Supports: Claude Codex Code(CC)

📊 75 Adequate

Install with my Agent

Copy this request to your Agent. It includes the canonical Skill page and manifest.

Agent request

Review the Skillstore skill "mcp-builder" from https://skillstore.io/skills/mcp-builder.md and its manifest at https://skillstore.io/api/skills/mcp-builder/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.

Agent-readable resources

Use these links when an AI agent, crawler, or script needs clean context instead of reading the full page.

Markdown detail GET /skills/mcp-builder.md Signed manifest GET /api/skills/mcp-builder/manifest Signed lockfile GET /api/skills/mcp-builder/lockfile

Test it

Using "mcp-builder". A developer asks how to expose a task management API through MCP.

Expected outcome:

A structured implementation plan with server naming, transport choice, tool list, schemas, authentication notes, and testing steps.

Using "mcp-builder". A team provides an existing MCP tool with broad responses and weak validation.

Expected outcome:

A focused review that recommends stricter schemas, pagination, safer error messages, and clearer tool descriptions.

Using "mcp-builder". A QA engineer needs evaluation coverage for a new MCP server.

Expected outcome:

A set of read-only evaluation scenarios with expected answers, verification guidance, and harness usage notes.

Security Audit

Safe

v7 • 7/6/2026 Open versioned report

All static findings were reviewed against the referenced files and are false positives. The matches are documentation examples, placeholder credentials, template literals, or user-invoked evaluation harness options; no prompt injection attempt or malicious behavior was found.

Files scanned

3,532

Lines analyzed

Review items

False positives ignored

Risk Factors

🌐 Network access (33)

🔑 Env variables (18)

⚙️ External commands (46)

No confirmed security findings were detected by the latest completed static and semantic audit. This does not prove the skill has no side effects.

Audited by: codex View Audit History →

Share & cite this report

Share the versioned assessment report, neutral badge, embed card, and citations. Skillstore reports evidence without deciding whether this Skill is safe.

Open versioned report

Copy report link

https://skillstore.io/skills/mcp-builder/audits/7?utm_source=security_passport&utm_medium=share&utm_campaign=versioned_report

Markdown badge

[![Skillstore security assessment](https://skillstore.io/badges/skills/mcp-builder/security.svg)](https://skillstore.io/skills/mcp-builder?utm_source=security_passport_badge)

HTML badge

<a href="https://skillstore.io/skills/mcp-builder?utm_source=security_passport_badge"><img src="https://skillstore.io/badges/skills/mcp-builder/security.svg" alt="Skillstore security assessment" loading="lazy"></a>

Embed card

<iframe src="https://skillstore.io/embed/skills/mcp-builder.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

anthropics. (2026). mcp-builder security audit report (audit version 7) [Author version unspecified]. Skillstore. https://skillstore.io/skills/mcp-builder/audits/7

BibTeX citation

@techreport{anthropics-mcp-builder-2026,
  author = {anthropics},
  title = {mcp-builder security audit report (audit version 7)},
  institution = {Skillstore},
  year = {2026},
  number = {7},
  url = {https://skillstore.io/skills/mcp-builder/audits/7},
  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-builder security audit report (audit version 7)"
version: "unspecified"
type: report
authors:
  - name: "anthropics"
date-released: "2026-07-06"
url: "https://skillstore.io/skills/mcp-builder/audits/7"
identifiers:
  - type: other
    value: "skillstore:mcp-builder:audit:7"
    description: "Skillstore immutable audit report identifier"

Compare variants

15 installable variants

Each author remains a separate installable skill. The recommended variant is ranked by Skillstore evidence.

Why this variant is first

Highest Skillstore Score

Author / source Skillstore Score Evidence Confidence Skillstore usage Updated

Doyajin174 Recommended

doyajin174-mcp-builder

Skillstore Score 78

Evidence Confidence High

Skillstore usage 13

Updated

2026-08-21

anthropics Current

mcp-builder

Skillstore Score 75

Evidence Confidence High

Skillstore usage 15

Updated

2026-08-21

Azeem-2

azeem-2-mcp-builder

Skillstore Score 75

Evidence Confidence High

Skillstore usage 8

Updated

2026-08-21

mcp-use

mcp-use-mcp-builder

Skillstore Score 68

Evidence Confidence High

Skillstore usage 10

Updated

2026-08-21

shubhamsaboo

shubhamsaboo-mcp-builder

Skillstore Score 67

Evidence Confidence Medium

Skillstore usage 5

Updated

2026-08-21

YYH211

yyh211-mcp-builder

Skillstore Score 66

Evidence Confidence High

Skillstore usage 68

Updated

2026-08-21

Cam10001110101

cam10001110101-mcp-builder

Skillstore Score 66

Evidence Confidence High

Skillstore usage 10

Updated

2026-08-21

DYAI2025

dyai2025-mcp-builder

Skillstore Score 66

Evidence Confidence High

Skillstore usage 7

Updated

2026-08-21

ZhanlinCui

zhanlincui-mcp-builder

Skillstore Score 38

Evidence Confidence Medium

Skillstore usage 22

Updated

2026-08-21

92Bilal26

92bilal26-mcp-builder

Skillstore Score 38

Evidence Confidence Medium

Skillstore usage 17

Updated

2026-08-21

sickn33

sickn33-mcp-builder

Skillstore Score 38

Evidence Confidence Medium

Skillstore usage 13

Updated

2026-08-21

ArtemisAI

artemisai-mcp-builder

Skillstore Score 38

Evidence Confidence Medium

Skillstore usage 10

Updated

2026-08-21

ComposioHQ

composiohq-mcp-builder

Skillstore Score 38

Evidence Confidence Medium

Skillstore usage 9

Updated

2026-08-21

AutumnsGrove

autumnsgrove-mcp-builder

Skillstore Score 38

Evidence Confidence Medium

Skillstore usage 9

Updated

2026-08-21

davila7

davila7-mcp-builder

Skillstore Score 38

Evidence Confidence Medium

Skillstore usage 7

Updated

2026-08-21

Skillstore Score

Why this score Evidence Confidence: High

Architecture

Maintainability

Content

Community

Spec Compliance

What You Can Build

Create a New MCP Integration

Plan and implement an MCP server that exposes a product API through well-described tools.

Improve Existing Tool Design

Review tool names, schemas, response formats, and annotations for better agent usability.

Evaluate Server Quality

Create evaluation questions and run the included harness against an MCP server.

Try These Prompts

Plan a Basic MCP Server

Help me plan an MCP server for this API: [describe service]. Identify core tools, naming patterns, transport choice, and required authentication.

Design Tool Schemas

Design MCP tool schemas for these operations: [list operations]. Include validation rules, response formats, pagination, and clear descriptions.

Review an MCP Implementation

Review my MCP server implementation for protocol fit, input validation, error handling, response size, and security issues. Focus on actionable fixes.

Create Evaluation Tasks

Create evaluation questions for this MCP server. Make them read-only, realistic, stable, independently verifiable, and difficult enough to test tool quality.