Publisher · domain
MCP servers published by gumballtools.com
14 servers in the official MCP Registry are published under the namespace com.gumballtools/ and have a page in this directory: all remote, reached by URL. First published 2026-09-05; latest update 2026-09-06.
What this publisher publishes
Names under com.gumballtools/ can only be published by someone who has proved control of the domain gumballtools.com to the MCP Registry, through a DNS record or a file served over HTTP. The name shows who controls that domain; it does not show that the servers were reviewed.
- Namespace
com.gumballtools- Servers with a page
- 14
- Categories
- other (11), data (1), developer (1), finance (1)
- Transports
- Streamable HTTP (14)
- Remote servers declaring a header
- 0 of 14
- Websites stated
- amortize.gumballtools.com, body-metrics.gumballtools.com, check-digit.gumballtools.com, color-companion.gumballtools.com, due-date.gumballtools.com, equation-steps.gumballtools.com, iso-week.gumballtools.com, json-to-types.gumballtools.com and 6 more
- First published
- 2026-09-05
- Latest update
- 2026-09-06
Source repositories
All 14 servers that state a repository name the same one.
| Repository | Servers |
|---|---|
| github.com/bwalvoord/gumball | 14 |
Latest updates
The ten servers whose registry entry changed most recently.
| Server | Runs | Updated |
|---|---|---|
| Equation StepsStep-by-step solver for linear/quadratic equations in one variable, signs and ± always right. | Remote · HTTP | 2026-09-06 |
| ISO Week NumberISO 8601 week numbers: date to week, week to date, weeks-per-year. | Remote · HTTP | 2026-09-06 |
| Payload ValidatorValidate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings. | Remote · HTTP | 2026-09-06 |
| Amortization ScheduleRow-by-row loan amortization schedules: monthly or daily accrual, extra principal, PMI, biweekly. | Remote · HTTP | 2026-09-05 |
| Body MetricsConvert height and weight, compute BMI, TDEE and protein targets with error bounds. | Remote · HTTP | 2026-09-05 |
| Check Digit ValidatorValidates IBAN/ISBN/EAN/Luhn checksums and finds the one wrong digit. | Remote · HTTP | 2026-09-05 |
| Color CompanionConvert colours between hex, RGB, HSL, OKLCH and CMYK, and compute harmonies. | Remote · HTTP | 2026-09-05 |
| Due DateEstimate a due date from LMP, conception, or ultrasound, with ACOG redating rules. | Remote · HTTP | 2026-09-05 |
| JSON to TypesConvert JSON samples into TypeScript interfaces and Zod schemas, with inference caveats. | Remote · HTTP | 2026-09-05 |
| Penny RoundingRound cash totals to the nearest nickel correctly — after tax, on the total, cash only. | Remote · HTTP | 2026-09-05 |
All 14 servers, A to Z
| Server | Runs |
|---|---|
| Amortization ScheduleRow-by-row loan amortization schedules: monthly or daily accrual, extra principal, PMI, biweekly. | Remote · HTTP |
| Body MetricsConvert height and weight, compute BMI, TDEE and protein targets with error bounds. | Remote · HTTP |
| Check Digit ValidatorValidates IBAN/ISBN/EAN/Luhn checksums and finds the one wrong digit. | Remote · HTTP |
| Color CompanionConvert colours between hex, RGB, HSL, OKLCH and CMYK, and compute harmonies. | Remote · HTTP |
| Due DateEstimate a due date from LMP, conception, or ultrasound, with ACOG redating rules. | Remote · HTTP |
| Equation StepsStep-by-step solver for linear/quadratic equations in one variable, signs and ± always right. | Remote · HTTP |
| ISO Week NumberISO 8601 week numbers: date to week, week to date, weeks-per-year. | Remote · HTTP |
| JSON to TypesConvert JSON samples into TypeScript interfaces and Zod schemas, with inference caveats. | Remote · HTTP |
| Payload ValidatorValidate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings. | Remote · HTTP |
| Penny RoundingRound cash totals to the nearest nickel correctly — after tax, on the total, cash only. | Remote · HTTP |
| Regex ExplainerExplain a regex in plain English and detect catastrophic backtracking risk. | Remote · HTTP |
| Sports RulesWork an offside call through IFAB Law 11 or NHL Rule 83, step by step. | Remote · HTTP |
| Timezone TruthConvert times between IANA zones and detect skipped or ambiguous DST local times. | Remote · HTTP |
| Words in ContextWords-in-context vocabulary practice questions with distractor explanations. | Remote · HTTP |
Grouped by registry namespace, as the MCP Registry states it. A page here is not an endorsement and nobody pays to be listed: editorial policy · Before you connect a server