MCP install guides
Each guide is one plugin and one client: ChatGPT, Claude, Cursor or Pi. The steps are not interchangeable. Every guide includes a tools/call that was posted to the live server, with the date of that check.
These pages are generated from the plugin listings, so the tool names match what tools/list returns. A combination with no checked call is left out. There is no sign-up and no key on the plugin hosts.
Company Jobs Finder
Open jobs at named companies. Server: https://jobs.openkrill.app/mcp. Tools: find_company_jobs, rank_jobs_for_profile, job_fit_brief, profile_keyword_check.
Install in ChatGPT, Claude, Cursor, Pi.
Startup Name Check
Is that name's domain taken?. Server: https://names.openkrill.app/mcp. Tools: check_domain_availability.
Install in ChatGPT, Claude, Cursor, Pi.
Package Health Check
Vulnerabilities and upkeep. Server: https://packages.openkrill.app/mcp. Tools: check_package, check_package_json.
Install in ChatGPT, Claude, Cursor, Pi.
Recall Check
US vehicle and product recalls. Server: https://recalls.openkrill.app/mcp. Tools: check_vehicle_recalls, decode_vin, search_product_recalls, search_food_drug_recalls, search_pet_food_recalls.
Install in ChatGPT, Claude, Cursor, Pi.
Citation Checker
Check references and DOIs. Server: https://citations.openkrill.app/mcp. Tools: check_references.
Install in ChatGPT, Claude, Cursor, Pi.
Store Price Tracker
Track an online store's prices. Server: https://stores.openkrill.app/mcp. Tools: check_store_prices, get_product_price_history.
Install in ChatGPT, Claude, Cursor, Pi.
Business Days and Holidays
Working days and holidays. Server: https://businessdays.openkrill.app/mcp. Tools: count_business_days, add_business_days, list_holidays.
Install in ChatGPT, Claude, Cursor, Pi.
Tariff Code Finder
Tariff codes and duty rates. Server: https://tariffs.openkrill.app/mcp. Tools: find_tariff_codes, get_duty_rate.
Install in ChatGPT, Claude, Cursor, Pi.
EU Business Check
VAT numbers, LEIs, registries. Server: https://eubusiness.openkrill.app/mcp. Tools: check_vat_number, find_company_lei, lookup_company_registry.
Install in ChatGPT, Claude, Cursor, Pi.
Rules Lookup
US federal regulations (CFR). Server: https://rules.openkrill.app/mcp. Tools: get_cfr_section, search_cfr, search_federal_register.
Install in ChatGPT, Claude, Cursor, Pi.
Site Check
Site SEO and landing checks. Server: https://sitecheck.openkrill.app/mcp. Tools: check_ai_crawler_access, check_page_tags, trace_redirects, product_page_seo, ai_readiness_check, link_sample_check, landing_page_check.
Install in ChatGPT, Claude, Cursor, Pi.
Travel Check
Travel advice and airports. Server: https://travel.openkrill.app/mcp. Tools: get_travel_advice, get_airport_status, compare_advisories.
Install in ChatGPT, Claude, Cursor, Pi.
Food Facts
Look up food by barcode. Server: https://food.openkrill.app/mcp. Tools: lookup_barcode, search_products, compare_products, check_allergens.
Install in ChatGPT, Claude, Cursor, Pi.
Car Check
Recalls, ratings and mpg. Server: https://cars.openkrill.app/mcp. Tools: decode_vin, get_vehicle_report, list_recalls, get_fuel_economy.
Install in ChatGPT, Claude, Cursor, Pi.
Document Tools
Count text, make .ics and CSV. Server: https://docs.openkrill.app/mcp. Tools: count_text, make_calendar_file, make_csv_file.
Install in ChatGPT, Claude, Cursor, Pi.
Tax Numbers
US tax figures, IRS-sourced. Server: https://tax.openkrill.app/mcp. Tools: get_tax_parameters, get_mileage_rate, tax_deadlines, estimate_federal_tax.
Install in ChatGPT, Claude, Cursor, Pi.
Shop Duty Desk
Duty and customs data checks. Server: https://shopduty.openkrill.app/mcp. Tools: eu_duty_estimate, customs_data_gap_check, bulk_hs_candidates, landed_cost_estimate.
Install in ChatGPT, Claude, Cursor, Pi.
Catalog QA Desk
Product catalog checks. Server: https://catalogqa.openkrill.app/mcp. Tools: csv_import_preflight, merchant_feed_check, listing_text_audit, listing_fix_sheet.
Install in ChatGPT, Claude, Cursor, Pi.
Dev Facts Check
EOL, licences, browsers, RFCs. Server: https://devfacts.openkrill.app/mcp. Tools: get_eol_status, check_license, check_browser_support, lookup_rfc.
Install in ChatGPT, Claude, Cursor, Pi.
Paper Finder
Find papers, get abstracts. Server: https://papers.openkrill.app/mcp. Tools: search_papers, search_arxiv, get_paper.
Install in ChatGPT, Claude, Cursor, Pi.
CVE Risk Check
CVE severity and exploit risk. Server: https://cve.openkrill.app/mcp. Tools: check_cve, check_cves, list_recent_kev.
Install in ChatGPT, Claude, Cursor, Pi.
Domain Mail Check
Email DNS and domain check. Server: https://mailcheck.openkrill.app/mcp. Tools: check_email_auth, check_dns_records, lookup_domain_registration.
Install in ChatGPT, Claude, Cursor, Pi.
Country Stats Facts
Country data: World Bank, IMF. Server: https://countrystats.openkrill.app/mcp. Tools: get_country_indicator, compare_countries, get_imf_forecast.
Install in ChatGPT, Claude, Cursor, Pi.
SEO Audit
SEO and local AI readiness. Server: https://seoaudit.openkrill.app/mcp. Tools: audit_site, audit_page, local_ai_readiness, check_ai_instructions, generate_ai_instructions.
Install in ChatGPT, Claude, Cursor, Pi.
AI Text Check
Flag AI-writing tells in text. Server: https://aitext.openkrill.app/mcp. Tools: check_ai_writing.
Install in ChatGPT, Claude, Cursor, Pi.
Market Indicators
Calculate market indicators. Server: https://indicators.openkrill.app/mcp. Tools: compute_indicators, get_indicators.
Install in ChatGPT, Claude, Cursor, Pi.
If you already know the role rather than the server, start at the role guides. Definitions of MCP, streamable HTTP and the other words on these pages are in the glossary.