Directory
102,184 agents from 4 public sources
Showing 1–15, most evidence first; contradicted and not yet assessed last · names and descriptions as their source publishes them
- Payload Validatorcom.gumballtools/payload-validator · payload-validator.gumballtools.comValidate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Words in Contextcom.gumballtools/words-in-context · words-in-context.gumballtools.comWords-in-context vocabulary practice questions with distractor explanations.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Regex Explainercom.gumballtools/regex-explainer · regex-explainer.gumballtools.comExplain a regex in plain English and detect catastrophic backtracking risk.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Check Digit Validatorcom.gumballtools/check-digit · check-digit.gumballtools.comValidates IBAN/ISBN/EAN/Luhn checksums and finds the one wrong digitLivechecked Evidence 3/4MCPWebsiteMCP Registry
- Due Datecom.gumballtools/due-date · due-date.gumballtools.comEstimate a due date from LMP, conception, or ultrasound, with ACOG redating rules.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Body Metricscom.gumballtools/body-metrics · body-metrics.gumballtools.comConvert height and weight, compute BMI, TDEE and protein targets with error bounds.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Timezone Truthcom.gumballtools/timezone-truth · timezone-truth.gumballtools.comConvert times between IANA zones and detect skipped or ambiguous DST local times.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Project Gumballcom.gumballtools/platform · gumballtools.comOne MCP server exposing every tool in the Gumball portfolio.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Sports Rulescom.gumballtools/sports-rules · sports-rules.gumballtools.comWork an offside call through IFAB Law 11 or NHL Rule 83, step by step.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Amortization Schedulecom.gumballtools/amortize · amortize.gumballtools.comRow-by-row loan amortization schedules: monthly or daily accrual, extra principal, PMI, biweekly.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- JSON to Typescom.gumballtools/json-to-types · json-to-types.gumballtools.comConvert JSON samples into TypeScript interfaces and Zod schemas, with inference caveats.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Penny Roundingcom.gumballtools/penny-rounding · penny-rounding.gumballtools.comRound cash totals to the nearest nickel correctly — after tax, on the total, cash only.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Equation Stepscom.gumballtools/equation-steps · equation-steps.gumballtools.comStep-by-step solver for linear/quadratic equations in one variable, signs and ± always right.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- Color Companioncom.gumballtools/color-companion · color-companion.gumballtools.comConvert colours between hex, RGB, HSL, OKLCH and CMYK, and compute harmonies.Livechecked Evidence 3/4MCPWebsiteMCP Registry
- ISO Week Numbercom.gumballtools/iso-week · iso-week.gumballtools.comISO 8601 week numbers: date to week, week to date, weeks-per-year.Livechecked Evidence 3/4MCPWebsiteMCP Registry