Free Agent Tools

Free Agent Tools: free remote MCP server

A free, no-auth remote MCP server (streamable HTTP) with 39 small, deterministic tools your AI agent can call: startup pitch roasting, business idea scoring, price headroom, hotel OTA commission, open-source swaps for SaaS bills, Google Ads / Meta Ads notice risk, App Store 4.2 / 4.3 precheck, faceless YouTube reality check, AI infrastructure bottlenecks, viral attention patterns, Japan trip planning, Japan tax-free refund checking, Japan visa / residence permit fees, Japan luggage rules / forwarding cost, the Kyushu travel discount (九州ふっこう応援割), the Japan customs duty-free allowance on arrival, Japan pre-entry TB screening (JPETS), Japan dual pricing (resident vs non-resident prices), a Japan emergency alert decoder (緊急地震速報, tsunami, the level-named warnings since 2026-05-29, 避難指示, J-ALERT), a Japan permanent residence (永住) guideline check for the 2026-10-01 revision, a Japan international postage calculator (Japan Post prices now vs from 2027-02-01), a Japan re-entry deadline check (みなし再入国 / re-entry permit / pending renewal), and a Japan overseas dependents check (国外居住親族: age bands, ¥380,000 remittance rule, 2026 income limit), a Japan part-time work check (資格外活動許可: which statuses may take which jobs, 28-hour rule with rolling 7-day windows, the 2026-10-01 pachinko change for dependents), a Japan driving check (Geneva IDP vs translation vs no route by country, 1-year and 3-month rules, 外免切替 after 2025-10-01), an Airbnb house rules check (likely-not-allowed rules and checkout tasks for bookings from 2026-11-20, rewrites, Japan 民泊 guest-register exceptions), a Japan My Number Card expiry check (foreign residents' card ends with the period of stay: city-hall deadline, 2-month extension while a renewal is pending, 10th-birthday cap; e-certificate and マイナ保険証 grace), a Japan Highly Skilled Professional points calculator (高度人材ポイント: 70 vs 80 for the PR fast track, ¥3M floor, no-double-count rules, J-Skip), and a Japan pet quarantine check (dogs, cats, rabbits: 180-day wait, 40-day notice, detention days, the 2027-01-01 mandatory 14-day export application), and a Japan leaving-tax check (resident tax still owed under the January 1 rule, tax agent / 納税管理人, final-salary lump sum, 準確定申告 and 転出届 deadlines), and a Japan disaster prep check (the 防災庁 2026-11-02 emergency request as a household checklist: water, food and portable-toilet stockpile, 旧耐震 check, 5-point to-do).

Endpoint: https://free-agent-tools.vercel.app/mcp
Landing page with setup for every client: https://free-agent-tools.vercel.app

No API key, no account, nothing to install. Results are rules of thumb and educational estimates, not financial, legal, or investment advice, and every result carries a disclaimer for the user.

Add it

Claude Code

claude mcp add --transport http free-agent-tools https://free-agent-tools.vercel.app/mcp

Claude (desktop / web): Settings → Connectors → Add custom connector → paste the URL.

ChatGPT: Settings → Apps & Connectors → Advanced → Developer mode → Create → paste the URL, no authentication.

Cursor (~/.cursor/mcp.json)

{ "mcpServers": { "free-agent-tools": { "url": "https://free-agent-tools.vercel.app/mcp" } } }

VS Code (.vscode/mcp.json)

{ "servers": { "free-agent-tools": { "type": "http", "url": "https://free-agent-tools.vercel.app/mcp" } } }

Windsurf (~/.codeium/windsurf/mcp_config.json)

{ "mcpServers": { "free-agent-tools": { "serverUrl": "https://free-agent-tools.vercel.app/mcp" } } }

Stdio-only clients

{ "mcpServers": { "free-agent-tools": { "command": "npx", "args": ["-y", "mcp-remote", "https://free-agent-tools.vercel.app/mcp"] } } }

Tools

Tool	What it does
roast_pitch	Roast a startup pitch (five judges, one verdict, one change)
score_business_idea_moat	Score a business idea (MOAT: fund, fix, or flee)
price_headroom_check	Price headroom from close rate
thirty_day_cash_check	Do customers fund growth? (30-day cash)
email_list_reactivation_value	What is an old email list worth?
hotel_ota_commission_calculator	Hotel OTA commission and direct-booking savings
saas_self_host_savings	Replace paid SaaS with open source: savings and payback
list_open_source_saas_alternatives	List open-source alternatives to paid SaaS
ads_policy_notice_risk_check	Google Ads / Meta Ads notice risk card
app_store_wrapper_precheck	App Store 4.2 / 4.3 / metadata rejection precheck
faceless_youtube_reality_check	Faceless / AI YouTube channel reality check
ai_infrastructure_bottlenecks	AI infrastructure bottlenecks explained
ai_bottleneck_quiz	Which AI bottleneck constrains your stack? (quiz)
viral_attention_patterns	How attention spreads online
viral_attention_quiz	Do you chase, invent, or read attention? (quiz)
japan_trip_plan	Japan trip plan by city and month
japan_trip_options	Japan Trip Brain: supported cities, months, travelers
japan_tax_free_refund_check	Japan tax-free shopping refund check (from 2026-11-01)
japan_visa_fee_check	Japan visa / residence permit fee (from 2026-10-01)
japan_luggage_check	Japan suitcase check: Shinkansen oversized-baggage rule + Yamato forwarding cost
kyushu_travel_discount_check	Kyushu travel discount (九州ふっこう応援割 2026): savings + date/channel eligibility
japan_customs_allowance_check	Japan customs duty-free allowance on arrival: within/over, duty estimate in yen, cash declaration
japan_tb_screening_check	Japan pre-entry TB screening (JPETS): TB Clearance Certificate needed? Indonesia from 2027-01-04, exemptions, Panel Clinics
japan_dual_pricing_check	Japan dual pricing (二重価格): resident vs non-resident prices at Himeji Castle, Nijo Castle (FY2027), Kyoto bus, Kagoshima, Kitakyushu… Full tracker table and checker: https://japan-dual-pricing.vercel.app
japan_emergency_alert_decode	Japanese emergency alert decoder: 緊急地震速報 EEW (and cancellations), tsunami, レベル4危険警報 and the 2026-05-29 renaming, 避難指示, Nankai Trough, J-ALERT; meaning, level, what to do, 14-language official names
japan_permanent_residency_check	Japan permanent residence (永住) guideline revised 2026-10-01: which version applies by filing date, spouse 3+1 → 5+3 years from 2027-04-01, 3-year visa transition, 6-month / 2.5-year absence rule, B1
japan_international_postage_check	Japan Post international mail prices now vs from 2027-02-01: EMS (1 kg bands), air / surface parcels, small packets, International Air Packet, letters, postcards; any country, cheapest option
japan_reentry_deadline_check	When must a foreign resident be back in Japan: deemed re-entry (1 year or card expiry, SPR 2 years, not extendable abroad), regular re-entry permit, 2-month special period while a renewal is pending
japan_overseas_dependents_check	Claiming a relative living outside Japan as a dependent (国外居住親族): age 16-29 / 30-69 / 70+ rules, ¥380,000 remittance test, 2026 ¥620,000 income limit, deduction amount, tax saving, proof documents
japan_parttime_work_check	Can a foreign resident do this part-time job / side gig on their Japanese status (資格外活動許可): comprehensive 28-hour vs individual permission, rolling 7-day hours, students' 8 h/day vacation rule, banned 風俗営業 venues, 2026-10-01 pachinko/game-center change for Dependent holders
japan_driving_check	Can you drive in Japan on a foreign license: Geneva IDP vs Japanese translation vs no route by country (NPA list, May 2026), last driving day (1 year from landing, IDP validity, 3-month rule), 外免切替 eligibility, test exemptions (incl. US states), documents, fees
airbnb_house_rules_check	Which Airbnb house rules / checkout tasks are likely not allowed for reservations booked from 2026-11-20 (dishes, stripping beds, trash off-site, fines, fees, amenity limits, contracts, ID, off-platform, rules after booking), EN/JA rewrites, standard rules to set, Japan guest-register (宿泊者名簿・旅券の写し) exception
japan_my_number_card_expiry_check	When a Japan My Number Card (マイナンバーカード) expires and what to do: foreign residents' card ends with the period of stay and is not extended by a visa renewal (city-hall deadline, one-time 2-month extension while pending, 10th-birthday cap, 特定在留カード), Japanese / PR / SPR 10th / 5th birthday and renewal window, e-certificate expiry, マイナ保険証 grace
japan_hsp_points_check	Japan Highly Skilled Professional (高度専門職 1号イ/ロ/ハ) points from the ordinance and ISA table: age / salary-by-age / education / experience / research / qualifications / position plus bonuses with no-double-count rules, ¥3M floor, 70 vs 80 (PR after 3 years vs 1 year), HSP ii, J-Skip, what could add points
japan_pet_quarantine_check	Japan pet import / export / round-trip dates for dogs, cats and rabbits from MAFF AQS rules: microchip → 2 rabies shots → antibody test → 180-day wait, designated regions, 40-day notice, vet check within 10 days, detention days if early, short-stay return, 14-day export application mandatory for dogs and rabbits from 2027-01-01
japan_leaving_tax_check	Leaving Japan: which 住民税 fiscal years are still owed (January 1 assessment date; leave by December 31 to skip next year), tax agent (納税管理人) needed?, final-salary lump sum (mandatory for jobs ending Jan 1 – Apr 30), year-end adjustment / 準確定申告 deadline, previous-year return, exit-tax flag, 転出届 window, pension lump-sum claim deadline. No yen amounts
japan_disaster_prep_check	Japan's 防災庁 emergency request (事前防災徹底のための緊急要請, 2026-11-02) as a household checklist: drinking water 3 L, 3 meals and 5 portable-toilet uses per person per day for 3 days or a week, gap against what you have, pets 5–7+ days, old quake standard (旧耐震, 建築確認 before 1981-06-01) and pre-2000 wooden-house check, status of the 5 points
japan_lost_item_check	Lost something in Japan (wallet, phone, passport, residence card, bag, umbrella; train, subway, Shinkansen, taxi, airport, shop, street): steps in order, operator lost-and-found contact, police search by prefecture, 遺失物法 periods (3-month hold, 2-week umbrellas / clothing, facility hand-over 1 / 2 weeks, ¥100,000 high-value line), 5–20% reward, residence card 14-day reissue deadline
japan_high_cost_medical_check	Japan 高額療養費: monthly cap for your age and income band, what you really pay, refund, 4th-month 多数回 rate, the new Aug–Jul yearly cap (from Aug 2026), the same bill under the Aug 2027 12-band schedule, 2-year claim deadline; optional months tracker

すべてのツールは読み取り専用で、冪等性があります。

プレーンなHTTP API

すべてのツールは、無料のJSON API（GETまたはPOST、CORSはオープン、OpenAPI 3.1、/.well-known/ai-plugin.json、llms.txt）としても利用できます。

サイト	OpenAPI
創業者スコアカード	https://fund-fix-flee.vercel.app/openapi.json
ホテルOTA手数料計算ツール	https://hotel-ota-calculator.vercel.app/openapi.json
SaaS請求額削減ツール	https://saas-bill-cutter.vercel.app/openapi.json
広告リスクチェック	https://ads-risk-check.vercel.app/openapi.json
AppGateパック	https://appgate-pack.vercel.app/openapi.json
顔出しなしYouTubeの現実チェック	https://faceless-yt-risk-check.vercel.app/openapi.json
AIボトルネックマップ	https://ai-bottleneck-map.vercel.app/openapi.json
バイラル注目度マップ	https://viral-attention-map.vercel.app/openapi.json
ピッチ酷評ツール	https://pitch-roast.vercel.app/openapi.json
日本旅行プランナー	https://japan-trip-brain.vercel.app/openapi.json
日本の免税還付チェック	https://japan-tax-free-refund.vercel.app/openapi.json
日本のビザ料金計算ツール	https://japan-visa-fee.vercel.app/openapi.json
日本の荷物チェック	https://japan-luggage.vercel.app/openapi.json
九州旅行割引計算ツール	https://kyushu-travel-discount.vercel.app/openapi.json
日本の税関免税範囲チェック	https://japan-customs-allowance.vercel.app/openapi.json
日本の結核スクリーニングチェック（JPETS）	https://japan-tb-screening.vercel.app/openapi.json
日本の二重価格チェック	https://japan-dual-pricing.vercel.app/openapi.json
日本の警報解読ツール	https://japan-alert-decoder.vercel.app/openapi.json
日本のPRガイドラインチェック	https://japan-pr-check.vercel.app/openapi.json
日本の国際郵便料金2027	https://japan-intl-postage.vercel.app/openapi.json
日本の再入国期限チェック	https://japan-reentry-check.vercel.app/openapi.json
日本の海外扶養家族チェック	https://japan-overseas-dependents.vercel.app/openapi.json
日本のアルバイト就労チェック	https://japan-parttime-check.vercel.app/openapi.json
日本の運転チェック	https://japan-driving-check.vercel.app/openapi.json
ハウスルールチェック	https://house-rules-check.vercel.app/openapi.json
日本のマイナンバーカードチェック	https://japan-mynumber-card-check.vercel.app/openapi.json
日本の高度人材ポイント計算ツール	https://japan-hsp-points.vercel.app/openapi.json
日本のペット検疫チェック	https://japan-pet-quarantine.vercel.app/openapi.json
日本の出国税チェック	https://japan-leaving-tax.vercel.app/openapi.json
日本の防災準備チェック	https://japan-disaster-prep.vercel.app/openapi.json
日本の遺失物チェック	https://japan-lost-item.vercel.app/openapi.json
日本の高額医療費チェック	https://japan-medical-cost-cap.vercel.app/openapi.json

• 日本の失業チェック
• 日本のビザ更新期間チェック
• 日本語能力試験のレベルチェック
• 日本の大学院卒業者向けビザチェック

日本のルールインデックス（機械可読）

日本の各ルールツールのしきい値、手数料、施行日、公式情報源をまとめたファイルです：/rules.json（人が読みやすい形式：/rules.md）。各ツール独自の /api/rules からコピーされており、そちらが最新情報の参照元です。python3 scripts/build-rules-index.py で再構築できます。教育目的の要約であり、法律、税務、または移民に関するアドバイスではありません。

テストする

npx @modelcontextprotocol/inspector --cli https://free-agent-tools.vercel.app/mcp --transport http --method tools/list

開発する

npm install
npm run dev        # http://localhost:3000/mcp
npm test           # schema and wiring tests
npm run e2e        # real MCP client: list tools and call every tool (defaults to production)

Next.js と mcp-handler（MCP SDK v2）を使用して構築されています。2026-07-28 仕様をネイティブに提供し、2025 年当時の Streamable HTTP クライアント向けにステートレスフォールバックを備えています。Vercel にデプロイされています。

ライセンス

MIT