Hopi operates a remote MCP server exposing over 200 calculators, converters, and validators for UK tax, VAT, dates, units, and more. It allows AI assistants to perform precise calculations and validations without storing user data or requiring authentication, ensuring privacy while providing structured, schema-defined results.
- Operator: Hopi
- Endpoint: https://mcp.hopi.co.uk/mcp
- Transport: streamable-http
- Sign-in: No sign-in
- Category: Productivity and knowledge
- Use cases: Calculate UK VAT, stamp duty, and take-home pay; Convert between units, currencies, and time zones; Validate IBANs, Bitcoin, and Ethereum addresses; Determine working days and bank holidays
- Tools: hopi_add_working_days, hopi_age_calculator, hopi_alcohol_unit_calculator, hopi_alphabetical_order, hopi_angle_converter, hopi_area_converter, hopi_aspect_ratio_calculator, hopi_average_calculator, hopi_base32_encoder, hopi_base64, hopi_bill_splitter, hopi_bingo_card_generator, hopi_bitcoin_address_validator, hopi_bmi_calculator, hopi_body_fat_calculator, hopi_caesar_cipher, hopi_cagr_calculator, hopi_calories_to_kj, hopi_case_converter, hopi_cat_age_calculator, hopi_celsius_to_fahrenheit, hopi_character_counter, hopi_cipher_identifier, hopi_cm_to_feet, hopi_cmyk_to_rgb, hopi_coin_flip, hopi_colour_name_finder, hopi_colour_palette_generator, hopi_colour_picker, hopi_colour_shades_generator, hopi_combination_generator, hopi_compound_interest_calculator, hopi_contrast_checker, hopi_cron_expression_parser, hopi_crypto_profit_calculator, hopi_css_gradient_generator, hopi_css_minifier, hopi_csv_to_json, hopi_cups_to_grams, hopi_currency_converter, hopi_data_size_converter, hopi_date_calculator, hopi_day_of_week_calculator, hopi_day_rate_calculator, hopi_days_between_dates, hopi_days_until_christmas, hopi_dca_calculator, hopi_dice_roller, hopi_diff_checker, hopi_discount_calculator, hopi_dog_age_calculator, hopi_download_time_calculator, hopi_due_date_calculator, hopi_dummy_data_generator, hopi_email_link_generator, hopi_emoji_remover, hopi_energy_cost_calculator, hopi_env_to_json, hopi_eth_address_checksum, hopi_eth_unit_converter, hopi_euromillions_generator, hopi_event_wine_calculator, hopi_fortune_cookie, hopi_fraction_calculator, hopi_fraction_to_decimal, hopi_fuel_cost_calculator, hopi_hash_generator, hopi_hash_identifier, hopi_heart_rate_zones, hopi_hex_to_rgb, hopi_holiday_entitlement_calculator, hopi_hourly_to_salary, hopi_hours_calculator, hopi_hsl_converter, hopi_html_escape, hopi_http_status_codes, hopi_iban_validator, hopi_ics_generator, hopi_inflation_calculator, hopi_json_formatter, hopi_json_to_csv, hopi_json_to_typescript, hopi_json_yaml_converter, hopi_jwt_decoder, hopi_kg_to_stone, hopi_leap_year_checker, hopi_length_converter, hopi_litres_to_pints, hopi_loan_calculator, hopi_lorem_ipsum_generator, hopi_lottery_number_generator, hopi_magic_8_ball, hopi_margin_calculator, hopi_markdown_previewer, hopi_market_cap_calculator, hopi_meta_tag_generator, hopi_miles_to_km, hopi_military_time_converter, hopi_minutes_to_hours, hopi_moon_phase_calculator, hopi_morse_code_translator, hopi_mortgage_calculator, hopi_mortgage_overpayment_calculator, hopi_mpg_converter, hopi_national_insurance_calculator, hopi_nato_phonetic_alphabet, hopi_net_to_gross, hopi_number_base_converter, hopi_number_to_words, hopi_oven_temperature_converter, hopi_overtime_pay_calculator, hopi_password_strength_checker, hopi_percentage_calculator, hopi_percentage_change_calculator, hopi_percentage_decrease_calculator, hopi_percentage_difference_calculator, hopi_percentage_increase_calculator, hopi_position_size_calculator, hopi_power_converter, hopi_pressure_converter, hopi_prime_factorisation_calculator, hopi_pro_rata_salary_calculator, hopi_product_feed_generator, hopi_random_colour_generator, hopi_random_coordinates, hopi_random_letter_generator, hopi_random_number_generator, hopi_random_team_generator, hopi_random_word_generator, hopi_ratio_calculator, hopi_reading_time_calculator, hopi_redundancy_pay_calculator, hopi_remove_duplicate_lines, hopi_remove_extra_spaces, hopi_remove_line_breaks, hopi_reverse_text, hopi_rgb_to_hex, hopi_ring_size_converter, hopi_robots_txt_generator, hopi_roman_numerals_converter, hopi_rounding_calculator, hopi_running_pace_calculator, hopi_satoshi_converter, hopi_savings_goal_calculator, hopi_schema_markup_generator, hopi_scientific_calculator, hopi_secret_santa_generator, hopi_shoe_size_converter, hopi_sleep_calculator, hopi_slot_machine_picker, hopi_slug_generator, hopi_small_text_generator, hopi_special_characters, hopi_speed_converter, hopi_spin_the_bottle, hopi_sql_formatter, hopi_staking_calculator, hopi_stamp_duty_calculator, hopi_standard_deviation_calculator, hopi_star_sign_calculator, hopi_student_loan_calculator, hopi_take_home_pay_calculator, hopi_tarot_reader, hopi_tdee_calculator, hopi_test_card_number_generator, hopi_text_repeater, hopi_text_splitter, hopi_time_calculator, hopi_time_zone_converter, hopi_tip_calculator, hopi_triangle_calculator, hopi_ucas_points_calculator, hopi_unicode_inspector, hopi_unit_price_calculator, hopi_unix_timestamp_converter, hopi_upside_down_text, hopi_url_encoder, hopi_url_parser, hopi_user_agent_parser, hopi_username_generator, hopi_utm_link_generator, hopi_uuid_generator, hopi_vat_calculator, hopi_vigenere_cipher, hopi_volume_converter, hopi_water_intake_calculator, hopi_week_number, hopi_weight_converter, hopi_wheel_spinner, hopi_word_counter, hopi_word_frequency_counter, hopi_working_days_calculator, hopi_would_you_rather_generator, hopi_yes_no_wheel, hopi_zero_width_text_hider
- Documentation: https://hopi.co.uk/mcp/
- Directory listing: https://koskamo.com/explore/hopi-mcp
- Also known as: Hopi MCP MCP; hopi-mcp