centerfield-visitor-mcp

Centerfield Visitor MCP

An MCP (Model Context Protocol) server that automates visitor reservations for the Centerfield building (www.centerfield.co.kr). Use it from any MCP-compatible agent — Kiro CLI / Kiro IDE / KiroCrew, Claude Code, Claude Desktop, Codex CLI, Cursor, Strands Agents (local stdio) and Amazon Quick or any remote client (streamable HTTP) — to register visitors with natural language: single entries, pasted text, survey exports, or Excel/CSV files.

센터필드 빌딩 방문예약을 자동화하는 MCP 서버입니다. 로컬 에이전트(Kiro, Claude Code, Codex, Cursor …)는 stdio로, Amazon Quick 같은 원격 에이전트는 streamable HTTP로 같은 서버를 씁니다.

The stdio server runs entirely locally — uvx downloads and runs it on your machine, and it talks directly to www.centerfield.co.kr. No backend service is required for local agents.

Quick start

mkdir -p ~/.config/centerfield-visitor-mcp
cp .env.example ~/.config/centerfield-visitor-mcp/.env   # fill CF_COMPANY_NAME, CF_PERSON_IN_CHARGE_MOBILE
uvx centerfield-visitor-mcp                               # stdio; every client below can launch this

~/.config/centerfield-visitor-mcp/.env is read automatically, so client configs need no secrets.

Client setup

Client	How	Details
Kiro CLI	~/.kiro/settings/mcp.json	clients/kiro/mcp.json
Kiro IDE	.kiro/settings/mcp.json (workspace)	same file
KiroCrew	agent JSON mcpServers + tools	clients/kirocrew/agent-snippet.json
Claude Code	claude mcp add centerfield-visitor --scope user -- uvx centerfield-visitor-mcp	clients/claude-code/
Claude Desktop	claude_desktop_config.json	clients/claude-desktop/
Codex CLI	~/.codex/config.toml [mcp_servers.centerfield-visitor]	clients/codex/config.toml
Cursor	.cursor/mcp.json	clients/cursor/mcp.json
Strands Agents	MCPClient(stdio_client(...))	clients/strands/example.py
Amazon Quick	remote streamable HTTP + OAuth 2LO	clients/remote/README.md

Agent skill (Agent Skills spec, works in Claude Code / Kiro / KiroCrew): SKILL.md — also shipped as the project skill .claude/skills/centerfield-visitor/SKILL.md.

Tools

Tool	Side effect	Notes
validate_configuration()	none	Checks company, approval contact and floor list against the live site
preview_visitors_from_text(text, default_visit_date, default_visit_time, default_floor, default_purpose, participation)	none	Parse + validate pasted CSV/TSV
register_visitor(..., dry_run)	creates a reservation	dry_run=true validates (input + site) without submitting
register_visitors_from_text(text, defaults…, participation, dry_run)	creates reservations	Sequential, one summary string returned
preview_visitors_from_file(file_path, defaults…, participation)	none	stdio deployments only (needs a shared filesystem)
register_visitors_from_file(file_path, defaults…, participation, dry_run)	creates reservations	stdio deployments only

Recommended flow: validate_configuration once → preview_* → human confirms → register_*. The default_* arguments fill columns that attendee lists usually lack (visit date/time/floor). participation keeps only rows whose attendance-type column contains the given text (see below).

Input constraints

Field	Rule
visit_time	HH:MM, 30-minute intervals, 08:00–20:00 (HH:MM:SS from spreadsheets tolerated)
visit_date	YYYY-MM-DD, today or later
floor	12 or 18; if omitted, CF_DEFAULT_FLOOR (default 12)
visit_purpose	meeting (default), visit_business, interview, tour, construction, others
visitor_mobile	Korean mobile; 010-1234-5678, 010 1234 5678, +82 10-1234-5678 are normalized to 01012345678; empty or non-mobile values are rejected
visitor_email	valid email address
duplicates	rows with the same mobile + date + time inside one request are skipped and reported

File / text format

Header row in Korean or English; survey-export headers are recognized too (Full Name, Email, 연락처(…), 소속/회사 (…)). Unknown columns are ignored.

이름,회사,전화번호,이메일,방문일,방문시간,층
홍길동,ABC주식회사,01012345678,[email protected],2026-11-15,10:00,12

Lists without date/time columns: pass default_visit_date="2026-11-15", default_visit_time="10:00".

Attendance type (survey exports): a column such as 참석 형태 / 어떤 형태로 참석하시나요? / Participation is detected and summarised in the preview (참석 형태 컬럼 감지: 온라인 7, 오프라인 3). Pass participation="오프라인" to process only rows whose value contains that text (case/space-insensitive; rows with an empty value are dropped and counted). If a filter is requested but the input has no such column, register_* refuses instead of registering everyone, and preview_* shows the unfiltered rows under a warning.

Configuration

Variable	Description	Default	Required
CF_COMPANY_NAME	Tenant company name as registered in Centerfield	(empty)	✅
CF_PERSON_IN_CHARGE_MOBILE	Mobile number of the approval contact registered in Centerfield	(empty)	✅
CF_BUILDING / CF_BUILDING_KEY	Building code / display key	east / East
CF_DEFAULT_FLOOR	Floor when a row omits it (12 or 18)	12
CF_TRANSPORT	stdio or streamable-http	stdio
CF_HTTP_HOST / CF_HTTP_PORT / CF_HTTP_PATH	HTTP bind address and path	127.0.0.1 / 8000 / /mcp
CF_HTTP_STATELESS / CF_HTTP_JSON_RESPONSE	Streamable HTTP mode	true / true
CF_HTTP_ALLOWED_HOSTS	Host allow-list for DNS-rebinding protection (host:* = any port). Empty: loopback binds use a built-in localhost list; other binds run with protection off and log a warning	(empty)
CF_EXPOSE_FILE_TOOLS	Force file tools on/off	on for stdio, off for HTTP
CF_CENTERFIELD_BASE_URL	Centerfield base URL	https://www.centerfield.co.kr
CF_REQUEST_TIMEOUT	HTTP timeout (seconds)	30
CF_BULK_MAX_VISITORS	Max visitors per bulk request (use 10 for Amazon Quick's 60 s limit)	200
CF_REQUEST_DELAY	Delay between submissions (seconds)	0.5
CF_ENV_FILE	Extra .env to load	(unset)

.env load order (later overrides earlier): ~/.config/centerfield-visitor-mcp/.env → ./.env → $CF_ENV_FILE; process environment variables always win. Startup logs (stderr) list the files read and any problems.

CF_PERSON_IN_CHARGE_MOBILE must be the mobile number registered as the tenant's approval contact. Run validate_configuration after setup — it checks both values live without creating a reservation.

Remote mode (Amazon Quick, hosted deployments)

CF_TRANSPORT=streamable-http CF_HTTP_HOST=0.0.0.0 uvx centerfield-visitor-mcp    # http://host:8000/mcp
docker build --platform linux/arm64 -t centerfield-visitor-mcp .                 # or the container image

See clients/remote/README.md for the AgentCore Runtime + Cognito recipe and the Amazon Quick connector steps. Works with mcp SDK 1.x and 2.x.

Development & testing

uv sync --group dev
uv run pytest                          # offline unit tests (mocked HTTP)
uv run --with "mcp<2" pytest           # same suite on mcp SDK 1.x
uv run python scripts/smoke_http.py    # streamable-http transport smoke test
uv run pytest -m live                  # read-only checks against the live site (needs a real .env)
CF_LIVE_REGISTER=1 CF_TEST_VISITOR_NAME=... CF_TEST_VISITOR_MOBILE=... CF_TEST_VISITOR_EMAIL=... uv run pytest -m live

The last command creates one real reservation; confirm it in the Centerfield mobile app and cancel it there (there is no cancel API).

How it works

The server holds a single session against the Centerfield site, manages CSRF tokens, verifies the tenant company and approval contact, resolves the floor key, then submits the reservation form. Bulk requests are processed sequentially with a configurable delay.

MCP Registry

Listed as io.github.hmkim/centerfield-visitor-mcp (see server.json).

mcp-name: io.github.hmkim/centerfield-visitor-mcp

License

MIT