Other · Remote MCP server

Payload Validator

Validate JSON, YAML, XML and CSV with exact line/column errors and silent-corruption warnings.

Visit Payload Validator's website

What the MCP Registry states

The entry as published to the official MCP Registry (read 2026-10-04), latest version.

Registry name
com.gumballtools/payload-validator
Version
0.1.0
Status
Active
Category
other
Transport
Streamable HTTP
Published
2026-09-06
Updated
2026-09-06
Publisher
com.gumballtools · 14 servers with pages here
Website
payload-validator.gumballtools.com
Repository
github.com/bwalvoord/gumball
Source
Registry API entry

Remote endpoints

TransportURLHeaders declared
Streamable HTTPhttps://payload-validator.gumballtools.com/api/mcpNone

How to connect Payload Validator

Payload Validator is a remote MCP server: there is nothing to install. Its endpoint is https://payload-validator.gumballtools.com/api/mcp, served over Streamable HTTP. In an assistant that accepts remote MCP servers (often under a setting named connectors, integrations or tools), add a new server and give it this URL; in a client configured by file, add it as a remote (HTTP) server with the same URL.

No headers are declared in the registry entry. If the server needs you to sign in, a client that supports MCP authorization opens the service's own sign-in page when it first connects.

Derived from the registry entry, not tested here. What the server does, and on what terms, is set by its publisher; check its repository or website before giving it access to your accounts or files. How to add an MCP server to an assistant · Before you connect

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Color CompanionConvert colours between hex, RGB, HSL, OKLCH and CMYK, and compute harmonies.Remote · HTTPcolor-companion.gumballtools.com
Due DateEstimate a due date from LMP, conception, or ultrasound, with ACOG redating rules.Remote · HTTPdue-date.gumballtools.com
Equation StepsStep-by-step solver for linear/quadratic equations in one variable, signs and ± always right.Remote · HTTPequation-steps.gumballtools.com
ISO Week NumberISO 8601 week numbers: date to week, week to date, weeks-per-year.Remote · HTTPiso-week.gumballtools.com
JSON to TypesConvert JSON samples into TypeScript interfaces and Zod schemas, with inference caveats.Remote · HTTPjson-to-types.gumballtools.com
Penny RoundingRound cash totals to the nearest nickel correctly — after tax, on the total, cash only.Remote · HTTPpenny-rounding.gumballtools.com
Regex ExplainerExplain a regex in plain English and detect catastrophic backtracking risk.Remote · HTTPregex-explainer.gumballtools.com
Sports RulesWork an offside call through IFAB Law 11 or NHL Rule 83, step by step.Remote · HTTPsports-rules.gumballtools.com
Timezone TruthConvert times between IANA zones and detect skipped or ambiguous DST local times.Remote · HTTPtimezone-truth.gumballtools.com
Words in ContextWords-in-context vocabulary practice questions with distractor explanations.Remote · HTTPwords-in-context.gumballtools.com

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