Tips, discounts, age, BMI, calorie needs, grades, GPA and date formatting, with the formula stated
Connect Remote server
claude mcp add --transport http everyday-calculators https://ukdata.reliness.co.uk/mcp/everyday-calculators --header "Authorization: Bearer <YOUR_API_KEY>"
{
"mcpServers": {
"everyday-calculators": {
"url": "https://ukdata.reliness.co.uk/mcp/everyday-calculators",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}
{
"servers": {
"everyday-calculators": {
"type": "http",
"url": "https://ukdata.reliness.co.uk/mcp/everyday-calculators",
"headers": {
"Authorization": "Bearer <YOUR_API_KEY>"
}
}
}
}
Settings > Connectors > Add custom connector
URL: https://ukdata.reliness.co.uk/mcp/everyday-calculators
Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools 9 found in our last check
calculate_gradeConverts a numerical percentage score to a letter grade using standard grading scale (A, B, C, D, F). (cost: 1 credit)
is_leap_yearChecks if a given year is a leap year using the Gregorian calendar rule (divisible by 4, except centuries unless divisible by 400). (cost: 1 credit)
calculate_gpaCalculates the Grade Point Average (GPA) from a list of grade points on a 4.0 scale. Returns the mean of all grades rounded to 2 decimal places. (cost: 1 credit)
batting_averageCalculates a baseball player's batting average by dividing hits by at-bats. Returns the result rounded to the specified precision (default 3 decimal places). (cost: 1 credit)
calculate_ageCalculates a person's age in years based on their birth date and the current date. (cost: 1 credit)
calculate_bmiCalculates Body Mass Index (BMI) using weight and height in either metric (kg, cm) or imperial (lbs, inches) systems. Formula: weight / (height²). (cost: 1 credit)
calculate_tipCalculates the tip amount based on the bill total and tip percentage. Returns the tip amount and total including tip. (cost: 1 credit)
calculate_calorie_intakeCalculates recommended daily calorie intake using the Mifflin-St Jeor equation and macronutrient distribution based on personal characteristics and fitness goals. Returns total daily energy expenditure (TDEE) and grams of protein, carbohydrates, and fats. (cost: 1 credit)
format_dateConvert a date (and optional time) from one format to another using strftime codes (%Y %m %d %B %b %A %a %H %I %M %S %p %j). Rejects impossible dates such as 31 February instead of rolling them over. (cost: 1 credit)
Headers
| Name | Description |
|---|---|
AuthorizationOptional, secret | Optional. Bearer <key> for more than the free daily allowance; free key from POST https://ukdata.reliness.co.uk/keys |
Details
| Endpoint | https://ukdata.reliness.co.uk/mcp/everyday-calculators (Streamable HTTP) |
| First published | 7 Nov 2026 |
| Last updated | 7 Nov 2026 |
| Registry name | uk.co.reliness/everyday-calculators |
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