SmartTools MCP MCP server

An official MCP server exposing over 70 free calculators and converters from the SmartTools website. It allows AI assistants to perform unit conversions, financial calculations, and text utilities via a single HTTP endpoint without requiring an account or API key, returning structured data with source links.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by SmartTools

MCP endpoint (Streamable HTTP)

https://smart-tools.xyz/mcp

Vendor documentation

What you can do with it

Convert units like length, weight, and temperature
Calculate mortgage payments, VAT, and compound interest
Generate hashes, UUIDs, and Base64 encodings
Check color contrast and validate regex patterns

Tools advertised by the last live check:

length_converter
weight_converter
temperature_converter
area_converter
volume_converter
speed_converter
pressure_converter
angle_converter
energy_converter
data_converter
time_converter
loan_calculator
mortgage_calculator
compound_interest_calculator
vat_calculator
tip_calculator
discount_calculator
percentage_calculator
salary_calculator
margin_calculator
unit_price_calculator
fuel_cost_calculator
electricity_cost_calculator
bmi_calculator
bmr_calculator
body_fat_calculator
ideal_weight_calculator
due_date_calculator
age_calculator
date_difference_calculator
hours_calculator
aspect_ratio_calculator
standard_deviation_calculator
fraction_calculator
triangle_calculator
pace_calculator
subnet_calculator
color_converter
gpa_calculator
scientific_calculator
height_converter
base64
case_converter
html_entities
url_encoder
slug_generator
remove_duplicates
text_counter
text_diff
lorem_ipsum
number_base
timestamp_converter
transliteration
uuid_generator
hash_generator
jwt_decoder
cron_parser
regex_tester
layout_fixer
wcag_contrast_checker
csv_to_json
csv_to_sql
table_to_csv
markdown_table
json_formatter
gitignore_generator
gradient_generator
htaccess_generator
meta_tag_generator
random_number_generator
robots_txt_generator
utm_builder
file_hash
password_generator

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http smarttools-mcp https://smart-tools.xyz/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add smarttools-mcp --url https://smart-tools.xyz/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable smarttools-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "smarttools-mcp": {
      "url": "https://smart-tools.xyz/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "smarttools-mcp": {
      "type": "streamableHttp",
      "url": "https://smart-tools.xyz/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start smarttools-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "smarttools-mcp": {
      "type": "http",
      "url": "https://smart-tools.xyz/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http smarttools-mcp https://smart-tools.xyz/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "smarttools-mcp": {
      "url": "https://smart-tools.xyz/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "smarttools-mcp": {
      "serverUrl": "https://smart-tools.xyz/mcp"
    }
  }
}

See all 957

Do you run SmartTools MCP?

Prove ownership with a DNS record, a well-known file, or your Official MCP Registry entry, and your edits publish immediately. Proofs are re-checked weekly; admins can still hide or remove a listing.

Claim this listing