ref-tools-mcp MCP — 사용 사례, 설치 & 라이브 데모

Name: ref-tools-mcp MCP Server
Author: ref-tools

왜 쓰나요

핵심 기능

Search public web technical docs with library awareness
Search private GitHub repos and internal PDFs (indexed by Ref)
ref_read_url returns clean markdown, not HTML soup
Token-efficient — designed to minimize wasted context
Simple npx install

라이브 데모

실제 사용 모습

ref-tools.replay ▶ 준비됨

0/0

설치

클라이언트 선택

~/Library/Application Support/Claude/claude_desktop_config.json · Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "ref-tools": {
      "command": "npx",
      "args": [
        "-y",
        "ref-tools-mcp"
      ],
      "_inferred": true
    }
  }
}

Claude Desktop → Settings → Developer → Edit Config 열기. 저장 후 앱 재시작.

~/.cursor/mcp.json · .cursor/mcp.json

{
  "mcpServers": {
    "ref-tools": {
      "command": "npx",
      "args": [
        "-y",
        "ref-tools-mcp"
      ],
      "_inferred": true
    }
  }
}

Cursor는 Claude Desktop과 동일한 mcpServers 스키마 사용. 프로젝트 설정이 전역보다 우선.

VS Code → Cline → MCP Servers → Edit

{
  "mcpServers": {
    "ref-tools": {
      "command": "npx",
      "args": [
        "-y",
        "ref-tools-mcp"
      ],
      "_inferred": true
    }
  }
}

Cline 사이드바의 MCP Servers 아이콘 클릭 후 "Edit Configuration" 선택.

~/.codeium/windsurf/mcp_config.json

{
  "mcpServers": {
    "ref-tools": {
      "command": "npx",
      "args": [
        "-y",
        "ref-tools-mcp"
      ],
      "_inferred": true
    }
  }
}

Claude Desktop과 같은 형식. Windsurf 재시작 후 적용.

~/.continue/config.json

{
  "mcpServers": [
    {
      "name": "ref-tools",
      "command": "npx",
      "args": [
        "-y",
        "ref-tools-mcp"
      ]
    }
  ]
}

Continue는 맵이 아닌 서버 오브젝트 배열 사용.

~/.config/zed/settings.json

{
  "context_servers": {
    "ref-tools": {
      "command": {
        "path": "npx",
        "args": [
          "-y",
          "ref-tools-mcp"
        ]
      }
    }
  }
}

context_servers에 추가. 저장 시 Zed가 핫 리로드.

claude mcp add ref-tools -- npx -y ref-tools-mcp

한 줄 명령. claude mcp list로 확인, claude mcp remove로 제거.

사용 사례

실전 활용법: ref-tools-mcp

How to stop the agent from hallucinating library APIs

👤 Coding agent users ⏱ ~10 min beginner

언제 쓸까: Agent confidently writes code that doesn't match the current library version.

사전 조건

Ref account + REF_API_KEY — Sign up at ref.tools (or whatever current Ref signup URL is)

흐름

Ask a question grounded in docs

Use ref_search_documentation to find how to use Prisma raw SQL queries in v5, then write an example.✓ 복사됨

→ Search hits with URLs; code cites them
Verify

ref_read_url on the top hit to confirm the API shape.✓ 복사됨

→ Clean markdown of the doc page

결과: Code that compiles against the actual library version.

함정

Search returns outdated docs for deprecated v-X — Include the version in the query: 'Prisma v5 raw SQL'

함께 쓰기: github

How to search internal engineering docs / PDFs with an agent

👤 Platform teams with internal runbooks ⏱ ~15 min intermediate

언제 쓸까: Agent needs to follow company-specific patterns, not whatever StackOverflow says.

사전 조건

Ref private sources indexed — Upload repos/PDFs to your Ref workspace (see Ref docs)

흐름

Scope search to private

ref_search_documentation 'internal auth pattern' with private sources only.✓ 복사됨

→ Internal results only
Read the runbook

ref_read_url on the top internal result.✓ 복사됨

→ Clean text of the runbook

결과: Internal-standards-compliant output.

함정

Internal docs go stale — agent still cites them — Tell the agent to check 'last updated' metadata and flag old content

How to fetch arbitrary URLs as clean markdown

👤 Anyone doing research + summarization ⏱ ~5 min beginner

언제 쓸까: You want the article text without nav/ads/JS junk.

흐름

Read the URL

ref_read_url https://some-blog.com/post — give me clean markdown.✓ 복사됨

→ Body text as markdown
Summarize

Now give me a 5-bullet summary.✓ 복사됨

→ Summary

결과: Clean content, fast.

함께 쓰기: markdownify

조합

다른 MCP와 조합해 10배 효율

ref-tools + github

Ground a PR review with official docs citations

For the Prisma migration in PR #1234, use ref_search_documentation to verify each API matches v5 docs, then comment on the PR.✓ 복사됨

ref-tools + markdownify

Combine Ref's doc search with markdownify for local PDFs not in Ref

Search Ref for our internal auth guidance, then markdownify the additional /specs/auth-v3.pdf that isn't indexed yet.✓ 복사됨

도구

이 MCP가 노출하는 것

도구	입력	언제 호출	비용
ref_search_documentation	query: str, sources?: str[]	Ground a library or internal-doc question	1 Ref API call
ref_read_url	url: str	Pull a page as clean markdown	1 Ref API call

비용 및 제한

운영 비용

API 쿼터: Per Ref plan tier
호출당 토큰: Search hits: 500-2000 tokens. URL reads: can be 5k-20k
금액: Ref is a paid service (free tier available); check current pricing
팁: Search first, then read only the top hit — chained reads are expensive.

보안

권한, 시크릿, 파급범위

최소 스코프: REF_API_KEY stored in env

자격 증명 저장: REF_API_KEY env var

데이터 외부 송신: Queries go to Ref's service; it in turn hits public web and your indexed private sources

절대 부여 금지: Don't share your workspace key broadly; use per-user keys if Ref supports them

Private sources uploaded to Ref live on their infrastructure — review their DPA for sensitive content.

문제 해결

자주 발생하는 오류와 해결

401 Unauthorized

Missing or invalid REF_API_KEY.

확인: echo $REF_API_KEY

Search returns stale results

Private-source re-index may be delayed; force re-index from Ref dashboard.

ref_read_url returns empty

Some sites block scraping. Use webpage-to-markdown via markdownify as a fallback.

Quota exceeded

Upgrade Ref plan or space out search usage.

대안

ref-tools-mcp 다른 것과 비교

대안	언제 쓰나	단점/장점
Context7 MCP	You want free public-library docs retrieval	No private source indexing
Apple Docs MCP / pg-aiguide	You only care about a specific platform's docs	Scoped; not general-purpose

ref-tools-mcp

왜 쓰나요

핵심 기능

라이브 데모

실제 사용 모습

설치

클라이언트 선택

사용 사례

실전 활용법: ref-tools-mcp

How to stop the agent from hallucinating library APIs

사전 조건

흐름

함정

How to search internal engineering docs / PDFs with an agent

사전 조건

흐름

함정

How to fetch arbitrary URLs as clean markdown

흐름

조합

다른 MCP와 조합해 10배 효율

도구

이 MCP가 노출하는 것

비용 및 제한

운영 비용

보안

권한, 시크릿, 파급범위

문제 해결

자주 발생하는 오류와 해결

대안

ref-tools-mcp 다른 것과 비교

더 보기

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