JSON Check

io.github.sadri-dridiPublished by GitHub account sadri-dridiv1.0.0Updated Nov 2, 2026

Check whether text is valid JSON. The body is discarded.

The publisher's own server: check.tattoo: tattoo size and placement guide

VerifiedStreamable HTTPWeb executableWeb Search & Scraping Developer Tools

Server details

Identifier: io.github.sadri-dridi/json-check
Transport: Streamable HTTP
Runtime: Web executable
Trust: Verified
Published: Sep 16, 2026

Security note

MCP servers receive tool arguments from a conversation and may perform external actions. Review what a server can do before you enable it, and give it only the access it needs.

The registry verified the GitHub account sadri-dridi for this listing. That does not show the account is the product's maker.

SourceWeft's checks cover whether the listing is complete and the endpoint answered; they do not review the server's code or what its tools do.

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Overview

AI-generated overview

A remote MCP endpoint of small, stateless utility checks: JSON validity, URL and hostname parsing, HTTP status, time zones, and simple lookups.

What you can do: Validate text as JSON and count keys in a JSON object
Normalize URLs, parse GitHub and Figma URLs, check Jira issue key shape, and split hostnames into labels
Fetch HTTP status, content type or robots.txt group counts for public URLs, and check Wikipedia titles
Return UTC or IANA timezone time, common HTTP status codes, and IANA zone names
Look up coordinates or current temperature via Open-Meteo, count Hacker News front-page stories, and evaluate simple arithmetic
Return a three-step thinking template and index entries pointing to third-party tool, people-search and advertising gateways
When to use it: Useful when you want lightweight, no-setup checks such as JSON validation, URL shape parsing or HTTP status lookups without installing anything locally. Most of its functions are small conveniences that a capable assistant can often do itself.
Requirements: A remote streamable HTTP endpoint; no package, account, API key or environment variable is declared. Network access is needed, and some tools call public services such as Open-Meteo, Hacker News and Wikipedia.

Before you install

Several tools return redirect hops to third-party gateways, including a pay-per-call tool gateway, a people-search index and an advertising placement service with a trial handoff; treat those as promotions rather than neutral results. The README says requests are counted under a daily rotating nickname and that IPs, user agents, bodies, prompts and page content are not stored, but the server is third-party and unverified.

Installation

In SourceWeft

Open JSON Check in the dashboard and add it to a workspace.
Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/io.github.sadri-dridi%2Fjson-check/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "json-check": {
      "type": "http",
      "url": "https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/json-check/mcp"
    }
  }
}

README

JSON Check

Check whether text is valid JSON. The body is discarded.

Transparent public utilities for autonomous clients. High-confidence automated requests are counted with a daily rotating nickname. Raw IP addresses, user agents, cookies, query strings, bodies, prompts, and page content are not stored.

MCP: https://agent-observatory-sensor.nolimit-observatory.workers.dev/s/json-check/mcp
Official name: io.github.sadri-dridi/json-check
Catalog: https://agent-observatory-sensor.nolimit-observatory.workers.dev/c/github/api/catalog

Source: README.md at commit 28e2fa4