com.gumballtools/platform

up checked 2026-11-10T20:37:46.866Z

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Publisher-provided title

Project Gumball

Publisher-provided description

One MCP server exposing every tool in the Gumball portfolio.

Summary by lookupd

Runs a set of utility tools for finance schedules, validation, cron, dates, colour, sports rules and quizzes, returning computed results.

Install

Claude Code, remote (streamable-http)

claude mcp add --transport http platform https://gumballtools.com/api/mcp

Codex, remote (streamable-http)

codex mcp add platform --url https://gumballtools.com/api/mcp

Cursor, remote (streamable-http) → .cursor/mcp.json

{
  "mcpServers": {
    "platform": {
      "url": "https://gumballtools.com/api/mcp"
    }
  }
}

Other clients: docs. Or tell your agent: Set up lookupd for me: read https://lookupd.com/agent.md and follow it.

Tools (25 tools)

Publisher-provided text

cron_explain Translate a cron expression into plain English, list upcoming run times in a timezone, and report the gotchas that make schedules misfire: day-of-month/day-of-w
cron_build Convert an English schedule description into a cron expression. Rule-based, not a language model: it refuses phrases outside its grammar rather than guessing, a
cron_next_runs Lists the next run times for a cron expression in a specific timezone, with no prose. Use it when the only question is "when does this next fire" — whether a jo
json_to_types Convert a JSON sample into TypeScript interfaces and a matching Zod schema. Merges EVERY array element into a union rather than typing from the first, keeps opt
regex_explain Explain a regular expression in plain English and detect catastrophic backtracking. ALWAYS call this before putting a pattern where it will run against untruste
timezone_convert Convert a wall-clock time between IANA zones. Returns null when the local time DOES NOT EXIST because a daylight-saving jump skipped it, and both candidates whe
color_analyse Convert a colour between hex, RGB, HSL, OKLCH, CMYK, and CSS names, and derive complementary, analogous, triadic, split-complementary and monochromatic harmonie
vocab_draw Draw words-in-context practice questions from a curated bank. The response deliberately contains NO answers and NO explanations, so you can quiz someone without
vocab_check Mark an attempt and get the teaching content: whether it was right, which option was correct, why it fits, and why EVERY distractor fails. Read the distractor r
body_metrics Compute BMI, energy expenditure, and protein targets from height and weight. Height and weight MUST carry units — a bare number is REFUSED rather than guessed,
due_date Estimate a due date from a last menstrual period, a known conception date, an IVF transfer, or an ultrasound measurement. Gestational age is counted from the LA
round_cash_total Settle a transaction: exact subtotal, tax computed on that exact subtotal, then round the final total to the nearest nickel — and ONLY for cash. Card, EFT and g
rounding_impact Compute the mean rounding delta per cash transaction across a price list. Answers "does rounding make retailers money" with arithmetic rather than a guess: symm
price_band For a list price and a tax rate, finds every nearby list price that settles to the SAME cash total, and the highest one. Use it for "what should I charge" and "
offside Returns a verdict plus every step taken. THREE verdicts, not two: offside, onside, and no-offside-offence — the last is real and common, because in soccer an of
offside_rule_contrast Returns the structural differences between soccer offside and hockey offside, one dimension at a time. Use it when someone asks how the two compare, and — more
check_digit_run Checks the check digit on an IBAN (ISO 7064 MOD 97-10), ISBN-10, ISBN-13, EAN-13, UPC-A, or a Luhn-checked card number. When the checksum fails it searches for
amortize_schedule Returns the full row-by-row schedule: per-period interest, scheduled principal, any extra principal, PMI, payment and running balance. Handles monthly or daily
iso_week_run Converts calendar dates to ISO 8601 week-numbering dates and back, in either direction, and reports how many weeks an ISO year has. Use it whenever a date must
validate_json Validates a JSON document and reports every problem in one pass with a 1-based line and column, a stable rule code and a fix hint. Reports the three things JSON
validate_yaml Validates a YAML document, including the values that mean different things to different loaders — found by resolving each unquoted scalar under both spec versio
validate_xml Validates XML for well-formedness, namespace correctness and entity-based attacks. Catches four classes of invalid XML that ordinary well-formedness checkers ac
validate_csv Validates CSV against RFC 4180 and reports ragged rows individually with both field counts, because "row 4813 has 6 fields, the header has 5" is the entire answ
validate_auto Detects whether a payload is JSON, YAML, XML or CSV, then validates it. Use it for a file with no extension, a clipboard paste, or a response body with an unhel
equation_steps_run Solves a linear or quadratic equation in one variable and returns every step: expanding parentheses, combining like terms, moving terms across the equals sign,

Details

Version: 0.1.0
Transports: streamable-http
Uptime (7 days): 100%
Median latency: 473 ms
First indexed: 2026-11-01T08:54:25.664Z
Last seen in registry: 2026-11-01T08:54:25.664Z
Repository: https://github.com/bwalvoord/gumball
Website: https://gumballtools.com

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Last crawl: 2026-11-11T16:17:25.167Z
API base: https://api.lookupd.com
MCP URL: https://api.lookupd.com/mcp