Utilities MCP servers

6,151 servers

Small helpers: time, math, text conversion, random data and other everyday tools.

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Arithym xyz.arithym/arithym

Precision math engine for AI agents. 203 exact methods. Zero hallucination.

100% up · 30 days

Utilities Official MCP Registry Remote
rust-mcp-core io.github.nullablevariant/rust-mcp-core

Config-driven MCP server framework built on the official rmcp SDK. Fully implements the Model Context Protocol spec — define tools, auth, prompts, resources, and HTTP behavior in YAML/JSON with minima

Version check not run yet

Model and agent tools crates.io Local
@iflow-mcp/mgraczyk-json-query-mcp com.npmjs.iflow-mcp/mgraczyk-json-query-mcp

MCP server for querying large JSON files

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Utilities npm Local MIT
@skillvault/mcp-a7c9bd9d com.npmjs.skillvault/mcp-a7c9bd9d

1. SkillVault 사용법 2. 스킬 등록 방법 3. md 파일 작성법 4. 카테고리 태그 작성 가이드 5. MCP 연동 설정 6. mcp.json 설정 7. npm 배포 npx 사용법 8. search_skills 검색 최적화 9. 팀원 온보딩 10. 첫 스킬 등록 따라하기

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Utilities npm Local MIT
@skillvault/mcp-ff04dc96 com.npmjs.skillvault/mcp-ff04dc96

SkillVault 사용법, 스킬 등록 방법, md 파일 작성법, MCP 연동 설정, 카테고리 태그 작성 가이드, 팀원 온보딩, search_skills 검색 최적화, mcp.json 설정

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Utilities npm Local MIT
@jia-seed/ascii-motion-mcp com.npmjs.jia-seed/ascii-motion-mcp

MCP server for converting images to ASCII art SVGs

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Utilities npm Local MIT
@tesselunits/mcp-connector com.npmjs.tesselunits/mcp-connector

A bridge to connect to the Tessel Units MCP server at https://tesselunits.art.

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Utilities npm Local MIT
@iflow-mcp/bayashi-mclocks-datetime-util com.npmjs.iflow-mcp/bayashi-mclocks-datetime-util

MCP server for datetime and timezone conversion, powered by mclocks config

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Utilities npm Local ARTISTIC-2.0
@iflow-mcp/blake365-macrostrat com.npmjs.iflow-mcp/blake365-macrostrat

Macrostrat MCP Server - Access geological data, rock units, formations, and stratigraphic information worldwide

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Utilities npm Local MIT
@iflow-mcp/kintopp-rijksmuseum-mcp-plus com.npmjs.iflow-mcp/kintopp-rijksmuseum-mcp-plus

[![MCP Protocol](https://img.shields.io/badge/MCP_Protocol-2025--11--25-blue?logo=data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAyNCAyNCIgZmlsbD0id2hp

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Design and media npm Local MIT
ajv-validation-mcp io.github.mallanisp/ajv-validator-mcp-server

This project provides a minimal [Model Context Protocol (MCP)](https://modelcontextprotocol.io/quickstart/server#node) server for validating JSON data against JSON Schema using [AJV](https://ajv.js.or

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Utilities npm Local 8 a week
@stanzaapi/mcp com.npmjs.stanzaapi/mcp

Model Context Protocol (MCP) server for Stanza enterprise APIs: IBAN, BIC/SWIFT, ANSI X12 837P/835/270/271, ISO 20022 pacs.008/pain.001/camt.053, GS1 barcode & Digital Link, ISO 6346 containers, IATA

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Utilities npm Local 7 a week ISC
aksara-mcp com.npmjs/aksara-mcp

MCP server for bidirectional Javanese Aksara transliteration via aksara-ts

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Utilities npm Local 7 a week MIT
calliope-ts com.npmjs/calliope-ts

Poetry scansion & analysis suite in TypeScript + MCP server. Phonological, textological, algorithmic scans, CLI & WebApp UIs, English & Russian modes, NLP purviews, prosodic & syntactic maps via our j

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Maps and location npm Local 7 a week APACHE-2.0
eanscan-cli com.npmjs/eanscan-cli

CLI + MCP server to look up product descriptions by EAN via the Eanscan API

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Utilities npm Local 7 a week MIT
gridform-mcp com.npmjs/gridform-mcp

Model Context Protocol server for the Gridform poster engine — generate, render, and translate Swiss-style posters from any MCP client.

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Utilities npm Local 7 a week SEE-LICENSE-IN
lazymac-mcp-llm-token-cost-calculator com.npmjs/lazymac-mcp-llm-token-cost-calculator

Cloudflare Workers MCP server wrapper: llm-token-cost-calculator

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Model and agent tools npm Local 7 a week MIT
mcp-server-banking com.npmjs/mcp-server-banking

Model Context Protocol (MCP) server for banking validation protocols, IBAN/BIC checksum verification, and FX wire fee simulations.

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Utilities npm Local 7 a week MIT
rubyhash-mcp com.npmjs/rubyhash-mcp

MCP server for RubyHash (rubyhash.dev): diff two Ruby hashes from failing Minitest/RSpec output and convert Ruby hash literals to sorted JSON. Runs entirely locally, nothing is uploaded.

Version check not run yet

Utilities npm Local 7 a week MIT
stem-mcp com.npmjs/stem-mcp

MCP server for STEM teaching: rendered math (KaTeX/MathJax + mhchem), SymPy checks, formula library, slide decks, channels, RBAC.

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Utilities npm Local 7 a week MIT
@botcallio/mcp com.npmjs.botcallio/mcp

MCP server for botcall - phone numbers for AI agents

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Utilities npm Local MIT
@flipfactory-it/mcp-reputation com.npmjs.flipfactory-it/mcp-reputation

MCP Reputation Monitor — Zero-cost online reputation monitoring via DuckDuckGo + sentiment analysis

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Utilities npm Local MIT
@1thang1k/odoo-mcp-server com.npmjs.1thang1k/odoo-mcp-server

Standalone MCP server for any Odoo instance via XML-RPC

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Utilities npm Local 12 a week MIT
@iflow-mcp/hshoja-currency-exchange-mcp-service com.npmjs.iflow-mcp/hshoja-currency-exchange-mcp-service

Hono.js service with MCP server for currency exchange rates

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Utilities npm Local ISC
@mintmcp/stdio-to-server com.npmjs.mintmcp/stdio-to-server

Convert MCP stdio to a server that runs in the MintMCP hosted environment.

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Utilities npm Local MIT
NLP Tools - Sentiment, NER, Toxicity & Language Detection io.github.fasuizu-br/nlp-tools

Toxicity, sentiment, NER, PII detection, and language identification tools

100% up · 30 days

Utilities Official MCP Registry Remote
@tuzi-ince/code-viz com.npmjs.tuzi-ince/code-viz

코드 변경을 텍스트 디프 대신 시각(HTML Side-by-Side · Mermaid 영향도 · ASCII 트리)으로 보여주는 CLI + MCP 서버 + Claude 스킬 패키지

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Design and media npm Local 6 a week MIT
guildform com.npmjs/guildform

Manage a Discord server's structure and identity from a YAML file, from Claude Code (MCP) or the CLI.

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Files and storage npm Local 6 a week MIT
openapi2mcp io.github.oil-oil/openapi2mcp

Converts OpenAPI specifications into MCP tools, enabling AI clients to interact with external APIs seamlessly.

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Developer tools npm Local 6 a week
ria6-architecture-router-mcp com.npmjs/ria6-architecture-router-mcp

Generic MCP router for L0-L6 architecture docs — any project with doc-index.yaml

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Docs and knowledge bases npm Local 6 a week MIT
toolbox-mcp com.npmjs/toolbox-mcp

An MCP server that gives AI agents 45 fast, local, privacy-first tools: PDF text extraction and editing, image processing, Excel, zip, HTML to markdown, exact math, QR generate and decode, crypto, cro

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Office documents and spreadsheets npm Local 6 a week MIT
lozanotek.joke-mcp-server io.github.lozanotek/joke-mcp-server

Demo MCP Server that returns hard-coded jokes.

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Utilities NuGet Local
bugforge-mcp com.npmjs/bugforge-mcp

MCP server that converts test failures into Jira-ready defect reports — inside any MCP Client, no LLM API key needed.

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Project management npm Local 12 a week MIT
@iflow-mcp/mrwan84-thikplc-mcp com.npmjs.iflow-mcp/mrwan84-thikplc-mcp

**ThinkPLC-MCP** is a server designed to interface with **SIEMENS PLC S7-1500/1200** using their **JSON-RPC 2.0 API**. It exposes API functionalities as **MCP tools**, enabling AI assistants and other

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Smart home and hardware npm Local ISC
@alexfloyd13/mcp-datetime com.npmjs.alexfloyd13/mcp-datetime

MCP server providing date, time, and timezone tools

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Utilities npm Local MIT
@astami/claude-code-bridge com.npmjs.astami/claude-code-bridge

A small, hardened MCP server that bridges an MCP client (Claude Desktop, Cowork, etc.) to the Claude Code CLI. One-shot execution and persistent Q&A sessions over stream-json.

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Utilities npm Local 5 a week MIT
@readx/mcp com.npmjs.readx/mcp

MCP server for ReadX — exposes the X/Twitter JSON API (readx.sh) as agent tools, paying per call over x402 with a local wallet.

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Marketing and SEO npm Local 5 a week AGPL-3.0-ONLY
codex-cli-mcp com.npmjs/codex-cli-mcp

MCP server wrapping the OpenAI Codex CLI — exposes ping, ask-codex, search-web, and write-file tools to any MCP client

Version check not run yet

Files and storage npm Local 5 a week MIT
devkit-mcp com.npmjs/devkit-mcp

37+ developer tools for AI coding assistants: UUID, password generator, HTTP fetch, text diff, JSON schema, hash, format conversion, color, time, encoding, regex

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Utilities npm Local 5 a week MIT
pdf-to-data-mcp com.npmjs/pdf-to-data-mcp

MCP server that converts PDFs and images (invoices, bank/brokerage statements, utility bills, purchase orders) into structured spreadsheet data via the Micro Apps converter API.

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Office documents and spreadsheets npm Local 5 a week MIT
Orpheus Masked Pitches Inpainter co.huggingface.projectlosangeles/orpheus-masked-pitches-inpainter

Instantly inpaint pitches in any MIDI with masked encoder

100% up · 30 days

Design and media Hugging Face Spaces Remote 1 tool APACHE-2.0
HY MT2 1.8B GGUF co.huggingface.playmak3r/hy-mt2-1.8b-gguf

Translate texts between many languages with the new HY 2

97.97% up · 30 days

Utilities Hugging Face Spaces Remote 1 tool APACHE-2.0
GNM Head — Interactive 3D Face Model co.huggingface.hugging-apps/gnm-v3-head-demo

Live 3D demo of Google's GNM parametric head model

99.86% up · 30 days

Design and media Hugging Face Spaces Remote 46 tools APACHE-2.0
Lunar Calendar MCP Server io.github.theburntdev/dotnet-mcp-lunar-calendar

Model Context Protocol (stdio) server: convert between Gregorian dates and Chinese lunisolar (lunar) dates using ChineseLunisolarCalendar. Built with the official MCP C# SDK.

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Calendar and scheduling NuGet Local
@ebowwa/mcp-mermaidmap com.npmjs.ebowwa/mcp-mermaidmap

MCP server for Mermaid diagram parsing and ASCII rendering

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Design and media npm Local MIT
mcp-readability com.npmjs/mcp-readability

Calculate readability scores and text complexity metrics for content optimization

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Utilities npm Local 5 a week MIT
claude-mcp-config-manager com.npmjs/claude-mcp-config-manager

MCP App for Claude Desktop — manage MCP server entries in claude_desktop_config.json from an interactive panel inside the chat

Not run: needs install scripts

Communication and chat npm Local 56 a week
@ebowwa/claude-code-config-mcp com.npmjs.ebowwa/claude-code-config-mcp

Claude Code Config MCP server - Manage Claude Code configuration files (CLAUDE.md, keybindings.json, settings.json, hooks, teams)

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Files and storage npm Local MIT