MCP.Market

Tools MCP server

by First-CH·io.github.First-CH/tools-mcp·v0.45.0
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Web production tools for AI agents: contrast, JP text, WebP, JSON-LD, slugs, dates and 40+ more

A94/100grade A
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Safety scan
A94/100

not scanned yet

Adoption
Growing

0 stars384 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Tools tools

No tool declarations could be read from the package source. They show once the server is installed.

Not scanned yet. New listings are scanned within a day or two of arriving.

How Tools compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
94/100
higher than 96% of 48,255 servers
Downloads a week
384
more than 85% of 12,191 servers with a package

Release history: 8 versions in the registry since 2026-07-20, latest 2026-11-02, typically one every 1 day.

Install Tools in Claude Code, Cursor or VS Code

Runs npx -y @first-ch/tools-mcp on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add tools-mcp -- npx -y @first-ch/tools-mcp
Add to Cursor

What the publisher says

From the Tools repository's README, as published. We do not edit it. Read it on GitHub

@first-ch/tools-mcp

MCP server exposing First CH Tools' free web-tool logic — WCAG contrast, JP character/X-weight counting, WebP conversion, JSON-LD generation, llms.txt generation, encoding/line-ending conversion, Marp Markdown→slide rendering, Japanese/English test-data generation, text/code diffing, cron-expression explanation, Base64/data-URI encoding, URL query-parameter editing, HTML entity escaping/unescaping, JSON⇄YAML conversion, px ⇄ rem/em unit conversion, colour-code conversion with alpha compositing, MD5/SHA-1/SHA-256/SHA-384/SHA-512 hashing, JWT decoding with expiry and signature checks, User-Agent parsing with device/bot detection, bulk UUID v4 / ULID generation, aspect-ratio calculation with responsive sizing, case conversion between camelCase, snake_case and kebab-case, CSV/TSV ⇄ JSON conversion, IP/CIDR calculation with subnet splitting and IP-range reduction, business-day date calculation with Japanese public holidays, and HTML-to-Markdown conversion — to AI agents such as Claude Code.

日本語版は 後半セクション を参照してください。

Install

Three ways to add this server, pick whichever fits your client.

Requires Node.js >=18.14.1 (all three methods below run the server via npx, so Node must be installed even when the MCP client itself — e.g. Claude Code's native, no-Node install — doesn't strictly require it).

1. npm, via the Claude Code CLI

claude mcp add firstch-tools -- npx -y @first-ch/tools-mcp

2. Claude Code plugin (also installs the same MCP server)

/plugin marketplace add First-CH/firstch-tools-mcp
/plugin install firstch-tools@first-ch

3. Any other MCP client (generic JSON config)

Add to your client's server config (e.g. mcp.json / claudedesktopconfig.json):

{
  "mcpServers": {
    "firstch-tools": {
      "command": "npx",
      "args": ["-y", "@first-ch/tools-mcp"]
    }
  }
}

This server is also registered in the MCP Registry as io.github.First-CH/tools-mcp (see server.json), so registry-aware clients can discover and install it by that name too.

Tools

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Tools: common questions

Is Tools MCP server safe?
Yes, by our scan: it is graded A (94/100). Read the Tools safety report
How do I install Tools?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Tools need an API key?
No secret keys are declared. It reads 3 settings from the environment.
Is Tools maintained?
The last commit was 45 days ago (2026-09-20). The latest release is v0.45.0.
How does Tools compare with other MCP servers?
safety score 94/100 (higher than 96% of 48,255 servers); downloads a week 384 (more than 85% of 12,191 servers with a package). Full comparison.