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TinyKit MCP Server

by xiaojiang19960811
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TinyKit MCP Server

24 deterministic developer utilities for AI agents, exposed as Model Context Protocol tools. Everything runs locally in the MCP server process — except fetch_markdown, which fetches the target URL (10s timeout, 2 MB cap, SSRF-guarded). Results are byte-exact every time: use these tools instead of approximating computations with the language model.

Same engine as the TinyKit API (free tier: 1000 requests/day/IP).

Install

Claude Code

claude mcp add tinykit -- node /path/to/tinykit-mcp/server.js

Or add to ~/.claude.json:

{
  "mcpServers": {
    "tinykit": {
      "command": "node",
      "args": ["/path/to/tinykit-mcp/server.js"]
    }
  }
}

Cursor

~/.cursor/mcp.json:

{
  "mcpServers": {
    "tinykit": {
      "command": "node",
      "args": ["/path/to/tinykit-mcp/server.js"]
    }
  }
}

Windsurf

~/.codeium/windsurf/mcp_config.json — same JSON shape as Cursor.

Requires Node.js 18+. Zero runtime dependencies for the tools themselves; run npm install once for the MCP SDK.

Related MCP server: @mate-tools/mcp-server

Tools (24)

#

Tool

What it does

1

base64

Base64 encode/decode (UTF-8)

2

binary

Text ↔ binary (8-bit groups)

3

hash

md5 / sha1 / sha256 / sha512

4

url_codec

URL percent-encode/decode

5

html_entity

HTML entity encode/decode

6

morse

Text ↔ Morse code

7

uuid

Generate 1–100 UUID v4

8

ulid

Generate / decode ULIDs (sortable IDs)

9

color_convert

HEX ↔ RGB (+HSL, CSS snippet)

10

rem_px_convert

rem ↔ px (configurable base)

11

timestamp

now / ts→date / date→ts

12

chmod

octal ↔ symbolic permissions

13

css_clamp

Fluid clamp() generator

14

css_specificity

Selector specificity (a,b,c) + breakdown

15

cron

Describe cron / list next run times

16

curl_to_fetch

curl → fetch() (async or promise style)

17

http_status

Status code lookup (or list all 52)

18

json_to_csv

JSON → CSV

19

json_to_sql

JSON → INSERTs (mysql/pg/sqlite)

20

json_to_typescript

JSON → TypeScript interfaces

21

svg_to_data_uri

SVG → CSS data URI

22

xml_to_json

XML → JSON

23

yaml_convert

YAML ↔ JSON

24

fetch_markdown

Webpage → clean markdown (SSRF-guarded, 10s timeout)

Every tool returns JSON text. Invalid input returns an MCP isError result with a message — the server never crashes on bad args.

fetch_markdown notes

  • Best for static pages, docs, blogs and news articles: extracts title, headings, paragraphs, links, lists, code blocks and simplified tables; drops nav/footer/ads/scripts.

  • Honest limits: sites with strong bot protection (Cloudflare challenge, login walls), JS-rendered SPAs, or very slow servers may fail or time out. Private/localhost/metadata IPs are blocked.

Auth (reserved)

Set TINYKIT_API_KEY to a Pro key (tk_live_...) to be ready for the future metered mode. Today the key is accepted but unused — all local tools run free.

License

MIT

This server cannot be deployed

Give agents eyes on the webHosted screenshot MCP. Send a URL, get a pixel-perfect image. $0.002 per grab. Works with Claude, Cursor, and Codex.grabbit.liveAd

Maintenance

ActivityMaintained
ResponsivenessNo issues

Resources

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