Agent-Native Calendar
Agent-Native Google Calendar - manage events, sync, and public booking
제작자가 쓴 설명(영어 원문)
U.S. federal holidays with observed dates and business-day math. Example from an open-source kit.
이 세 가지는 절대 하나의 점수로 합치지 않아요. 의견, 측정, 인기는 서로 다른 것이니까요.
이 서버는 아직 쉬운 말로 된 요약을 쓰지 못했어요. 아래는 레지스트리에서 읽어 온 사실이에요.
쓰고 있는 AI 앱을 고른 다음 설정을 복사하세요.
필요한 것
어떤 앱을 쓰세요?
위에서 앱을 고르세요. 기억해 두었다가 다음부터는 버튼에 “…에 설치”라고 표시해요.
웹, 데스크톱, 모바일의 Claude에서 쓸 수 있어요:
https://starter.modernmustardseed.com/holidays터미널에서 이 명령어를 실행하세요
claude mcp add --transport http holiday-calendar https://starter.modernmustardseed.com/holidays프로젝트의 .cursor/mcp.json 또는 ~/.cursor/mcp.json에 붙여 넣으세요
{
"mcpServers": {
"holiday-calendar": {
"url": "https://starter.modernmustardseed.com/holidays"
}
}
}브라우저가 앱을 열지 물어본 다음, 앱이 설정을 보여 주고 확인을 요청해요. 키 값은 비워 두니 직접 입력하세요.
프로젝트의 .vscode/mcp.json에 붙여 넣으세요
{
"servers": {
"holiday-calendar": {
"type": "http",
"url": "https://starter.modernmustardseed.com/holidays"
}
}
}브라우저가 앱을 열지 물어본 다음, 앱이 설정을 보여 주고 확인을 요청해요. 키 값은 비워 두니 직접 입력하세요.
ChatGPT는 인터넷에 있는 서버에만 연결할 수 있어요:
https://starter.modernmustardseed.com/holidays메뉴 이름은 요금제나 시기에 따라 조금 다를 수 있어요.
선택한 앱은 이 기기의 쿠키에만 저장돼요. 계정은 필요 없어요.
이 설정은 제작자의 레지스트리 정보로 만들었어요. README와 다르면 README를 따르세요.
도구 이름과 설명은 서버가 2026년 11월 8일에 알려 준 그대로예요. 우리가 아니라 제작자가 쓴 글이고, 일반 텍스트로만 보여 드려요.
list_federal_holidaysList the eleven U.S. federal holidays for one calendar year (2021 through 2100): each holiday's name, its actual date and weekday, the date it is observed when it falls on a weekend (Saturday moves to the Friday before, Sunday to the Monday after), and the rule that sets it, from
next_federal_holidaysFind the next one to eleven U.S. federal holidays observed on or after a date, with each one's observed date and how many calendar days away it is. Without from_date it starts from today's date in America/New_York and says which date it used.
check_business_dayCheck whether a date is a U.S. business day (a weekday that is not an observed federal holiday). Returns the weekday, the holiday observed that day if any, and the business days just before and just after it.
add_business_daysMove a number of U.S. business days forward or backward from a date, skipping weekends and observed federal holidays, for due dates, delivery windows and notice periods. The start date is not counted: 1 business day after a Friday is the next Monday, or Tuesday when that Monday i
count_business_daysCount the U.S. business days between two dates, both dates included, leaving out weekends and observed federal holidays. Returns the business day count, the weekend days, and each holiday that fell in the span. Spans up to 3,660 calendar days.
누구나 볼 수 있는 정보를 점검했고, 코드는 읽지 않았어요. 해당하지 않는 항목은 개수에서 뺐어요. · 2026년 11월 8일 점검
레지스트리 이름이 도메인 modernmustardseed.com 기준으로 확인되었어요(레지스트리가 도메인 소유를 확인해요)
아직 GitHub에서 이 저장소를 읽어 오지 않았어요
아직 GitHub에서 이 저장소를 읽어 오지 않았어요
295ms 만에 응답(HTTP 200)
로그인 필요 없음
도구 설명 5개를 읽었고, AI에게 보내는 숨겨진 지시는 없었어요
레지스트리에서 이 카테고리의 활성 서버 전체와 비교했어요. 스타는 게시자가 저장소를 소유한 경우에만 세요.
해당하는 기본 점검 3개 중 3개를 통과했어요. 코드는 읽지 않았어요. 키나 토큰을 넣기 전에 서버가 어떤 권한을 요구하는지 확인하고, 꼭 필요한 권한만 있는 키를 쓰세요.
레지스트리에 필수 키가 나와 있지 않아요. 다만 처음 쓸 때 로그인을 요구하는 서버도 있어요.
제작자의 클라우드에서 실행돼요. 설치 없이 인터넷으로 연결하지만, 보내는 내용은 제작자의 서버를 거쳐요.
GitHub 저장소는 마지막으로 – 변경됐고, 최신 버전(1.0.1)은 27일 전 레지스트리에 올라왔어요.
Claude Desktop, Claude Code, Cursor, VS Code처럼 MCP를 지원하는 앱에서 쓸 수 있어요. URL로 연결되기 때문에, 원격 MCP 서버를 지원하는 앱(예: 개발자 모드의 ChatGPT)에서도 쓸 수 있어요.
같은 카테고리에는: Agent-Native Calendar, Excel MCP Server, MCP Server for Excel
같은 카테고리에서 다른 제작자가 만든 서버예요. 스타 순으로 정렬했어요.
카드 보는 법:↓ 주간 다운로드i★ GitHub 스타i세 기둥: 리뷰 · 점검 · 사용 정도i업데이트 = 최신 버전을 레지스트리에 공개한 날i
Agent-Native Google Calendar - manage events, sync, and public booking
Create and edit Excel files with AI: charts, PivotTables, formulas. No Excel needed.
Excel automation for AI - Sheets, Power Query, DAX, VBA, Tables, Ranges and more. Windows only.
제작자의 저장소에서 쓰인 그대로 가져왔어요. PopNx MCP가 검토하거나 보증한 내용이 아니에요. HTML, 이미지, 스크립트는 제거했어요. 링크를 누르면 이 사이트를 벗어나요.
Ship a remote MCP connector for Claude that is built to pass Anthropic's directory review on the first try.
This kit is the set of patterns Modern Mustard Seed uses for the connectors it runs in production, pulled out into a clean Next.js project you can fork:
mcp-handler, serving Streamable HTTP at one URL per connector, with no redirect.readOnlyHint or destructiveHint on every tool, snake_case names of 64 characters or fewer, and descriptions that describe instead of steer. Break a rule and pnpm test fails, long before a reviewer sees it.160.79.104.0/21, so nothing is keyed by IP and nothing returns HTTP 429./.well-known/security.txt, all driven by one config file.MIT licensed. Built by Modern Mustard Seed.
The example connector runs live, deployed from this repository with no changes:
https://starter.modernmustardseed.com/holidays (add it in Claude under Customize > Connectors > Add custom connector)com.modernmustardseed/holiday-calendarRun the evals against it yourself: node eval/holidays.eval.mjs https://starter.modernmustardseed.com
You need Node 22.6 or later, pnpm, and a Vercel account (any host that runs Next.js works).
1. Make your copy. (1 minute)
gh repo create my-connector --template ModernMustardSeed/small-business-mcp-starter --public --clone
cd my-connector pnpm install
Or select Use this template on GitHub.
2. Run it and prove it works. (2 minutes)
pnpm dev
In a second terminal:
pnpm test
pnpm evals http://localhost:3000
You should see 32 pass from the unit tests and 35 of 35 passed from the evals. Open http://localhost:3000/docs/holidays to see the docs page reviewers read.
3. Make it yours. (2 minutes)
Edit lib/site.ts: company name, location, website, support inbox, security inbox, and the policy date. Every public page and security.txt read from it. Replace app/icon.svg and app/apple-icon.png with your own mark; the directory listing asks for an icon.
4. Deploy. (3 minutes)
Import the repository at vercel.com/new, or from the terminal:
vercel deploy --prod
Vercel sets VERCEL_PROJECT_PRODUCTION_URL, which the pages use for their links. Leave Attack Challenge Mode and any bot-protection rule off for your MCP paths: they answer Claude with a challenge page.
5. Check the deployment. (1 minute)
pnpm preflight https://your-project.vercel.app
pnpm evals https://your-project.vercel.app npx @modelcontextprotocol/inspector --cli https://your-project.vercel.app/holidays --transport http --method tools/list
Preflight checks HTTPS, no redirect, no 403 or 429, every public page returning 200, the MCP handshake and the annotation rules.
6. Try it in Claude. (1 minute)
In Claude, open Customize > Connectors > Add custom connector and paste https://your-project.vercel.app/holidays. Ask: "An invoice dated 2026-11-20 is due in 10 business days. What date is that?" In Claude Code:
claude mcp add --transport http holidays https://your-project.vercel.app/holidays
lib/holidays/tools.ts to lib/ /tools.ts. Declare each tool as a ToolSpec: name, title, description, zod input schema, annotations, a per-minute limit, optional global limits, the fields that are safe to log, and a run function that returns ok(data) or fail(code, sentence).app/holidays/route.ts to app/ /route.ts and point it at your tools.app/docs/holidays/page.tsx to app/docs/ /page.tsx. Keep the "For reviewers" section: you paste it into the form.app/privacy/page.tsx so every sentence is true of your tools: what they receive, what they read, what you keep and for how long, who else touches it.eval/holidays.eval.mjs. Write 20 to 50 cases from prompts real users type, with expected values from an authority outside your code. Include the error cases.safeFetch from lib/mcp/safe-fetch.ts. Never fetch a user-supplied URL directly.pnpm preflight and pnpm evals against production, test every tool in Claude, then work through docs/SUBMISSION-CHECKLIST.md.Why each pattern exists, with the rule it answers: docs/PATTERNS.md.
| Path | What it does |
|---|---|
app/holidays/route.ts | The connector endpoint. One file per connector. |
lib/mcp/tool.ts | ToolSpec, registerTools, runTool: conventions, limits, errors, size cap, logging. |
lib/mcp/limits.ts | Per-instance and global limits, never by IP; Redis with an in-memory fallback; a small cache. |
lib/mcp/safe-fetch.ts | SSRF-safe fetch: public addresses only, guarded DNS lookup, five checked redirects, byte cap, deadline. |
lib/holidays/ | The example connector: the holiday engine and its five tools. |
lib/site.ts | Company, support and security contacts, policy date. Edit first. |
app/docs, app/privacy, app/terms, app/support | The pages reviewers and users open. |
app/.well-known/security.txt | RFC 9116 security contact. |
eval/ | Dependency-free MCP client and the example's 35 checks against a live URL. |
scripts/preflight.mjs | Pre-submission checks against a deployed URL. |
scripts/check-prose.mjs | Fails on em and en dashes in tracked files. |
test/ | Unit tests for conventions, limits, SSRF guard and the example engine. |
docs/ | The submission checklist and the pattern notes. |
The example runs with no environment variables. Optional:
| Variable | Purpose |
|---|---|
SITE_URL | Public origin, if you are not on Vercel or want a custom domain in page links. |
UPSTASH_REDIS_REST_URL, UPSTASH_REDIS_REST_TOKEN | Global rate limits and cache shared across instances. The Vercel Marketplace integration sets KV_REST_API_URL and KV_REST_API_TOKEN instead; both are read. Without Redis, each instance limits itself in memory at one tenth of the global numbers. |
| Command | What it does |
|---|---|
pnpm dev | Local server on port 3000. |
pnpm test | Unit tests (Node's built-in runner). |
pnpm evals | The example's evals against a running server. |
pnpm preflight | Pre-submission checks against a deployed URL. |
pnpm typecheck, pnpm lint, pnpm build | The usual. |
pnpm check:prose | No em or en dashes in tracked files. |
The Holiday Calendar computes the eleven U.S. federal holidays from 5 U.S.C. 6103, a public-domain statute, with the observance rule federal offices follow: Saturday holidays move to the Friday before, Sunday holidays to the Monday after. It covers 2021 through 2100. Its tools list a year of holidays, find the next ones, check whether a date is a business day, add business days to a date, and count business days in a span. It makes no network calls and stores nothing. The evals check its answers against the Office of Personnel Management's published schedules.
Issues and pull requests are welcome; see CONTRIBUTING.md. Report vulnerabilities privately as described in SECURITY.md.
This kit is not affiliated with or endorsed by Anthropic. "Claude" is a trademark of Anthropic, PBC. Directory rules change; the checklist links every rule to Anthropic's documentation so you can confirm it before you submit.
This kit comes from Modern Mustard Seed, an AI studio in Kalispell, Montana that builds websites, AI voice agents and custom software for small businesses, managed for you, end to end.
MIT, Copyright (c) 2026 Modern Mustard Seed LLC.