How do I use basic-mcp?

1. Click on "Install Server". 2. Wait a few minutes for the server to deploy. Once ready, it will show a "Started" state. 3. In the chat, type @ followed by the MCP server name and your instructions, e.g., "@basic-mcp How many days are there between today and January 1st, 2026?" That's it! The server will respond to your query, and you can continue using it as needed. Here is a step-by-step guide with screenshots.

basic-mcp

by msilverblatt

Overview Schema Related Servers Score Discussions

TypeScript

Hybrid

basic-mcp

MCP server providing deterministic tools for operations that LLMs commonly struggle with: time, math, counting, randomness, and validation.

Installation

bun install

Usage

With Claude Code

Add to ~/.claude.json:

{
  "mcpServers": {
    "basic-tools": {
      "command": "bun",
      "args": ["run", "/path/to/basic-mcp/index.ts"]
    }
  }
}

Standalone

bun run index.ts

Tools

Time

Tool	Description
`now`	Get current date/time with timezone support
`date_diff`	Calculate difference between two dates
`date_add`	Add/subtract time from a date
`unix_timestamp`	Convert between Unix timestamps and dates

Math

Tool	Description
`calculate`	Evaluate math expressions (supports "15% of 200", sqrt, trig, etc.)
`convert_units`	Convert between units (km to miles, celsius to fahrenheit, etc.)
`statistics`	Calculate mean, median, mode, std dev, min, max, sum

Strings

Tool	Description
`count`	Count characters, words, lines, bytes, sentences, paragraphs
`hash`	Generate MD5, SHA1, SHA256, SHA512 hashes
`uuid`	Generate UUID v4
`base64`	Encode/decode base64
`regex_test`	Test strings against regex patterns

Random

Tool	Description
`random_int`	Cryptographically secure random integer
`random_float`	Cryptographically secure random float
`random_choice`	Select random item(s) from a list
`shuffle`	Randomly shuffle an array (Fisher-Yates)

Validation

Tool	Description
`validate`	Validate email, URL, IPv4, IPv6, UUID, JSON, credit card (Luhn)
`json_parse`	Parse JSON with optional path extraction
`url_parse`	Parse URL into components
`dns_lookup`	DNS lookup (A, AAAA, MX, TXT, NS, CNAME records)

License

MIT

This server cannot be installed

security - not tested

license - permissive license

quality - not tested

How are these scores calculated?

Resources

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