Apideck Unified API MCP — 330 tools across 200+ SaaS connectors (accounting, CRM, HRIS, ATS).
Validates PESEL/NIP/REGON/IBAN/Luhn/ISBN/EAN/SWIFT-BIC/VAT; RPN calc, date math, hashing, tokens.
Validates Luhn, IBAN, ISBN, EAN/UPC, SWIFT/BIC, and EU VAT checksums and formats.
Date arithmetic: day differences, business days, age, leap years, day-of-week, add/subtract.
Computes MD5, SHA1, SHA256, SHA512, and CRC32 digests from text, base64, or hex input.
Validates Polish PESEL, NIP, and REGON checksums; PESEL also decodes birth date and sex.
Evaluates Reverse Polish Notation (postfix) expressions: arithmetic, trig, logs, bitwise ops.
Exact character/word counting, reversal, palindrome checks, indexing, sorting; Unicode-safe.
350+ production-ready APIs through one MCP server — weather, geocoding, validation, financial data.
Geographic data API: 250+ countries, 150K+ cities, IP geolocation, 161 live FX rates.
iOS App Store revenue & download estimates with confidence labels.
Track app-store rankings, history, listing metadata, reviews and competitors across four stores.
Search royalty-free BGM and sound effects (commercial use OK, no credit) and game fan arrangements.
Значения карт Таро и Ленормана, расчёты Матрицы судьбы и Квадрата Пифагора.
Korean premium short-term rental search: natural language or structured filters (SHV engine).
Verified B2B contact data: size a market free, reveal or export when the segment is right.
Last day to make an offer and still fund inside a Canadian rate hold. Needs the expiry date.
Describe a problem in plain language; get matching products with honest caveats. Never sponsored.
App Store keyword research, rank tracking and App Store Connect performance for your iOS apps.
Vedic and Western astrology, numerology, tarot. Kundali, dasha, panchanga, Rajju/Vedha matching.
Create, edit, restructure, import and export Atlas Red mind maps from any MCP client. Free.
Search, appraise, trademark-check, and buy premium brandable domain names from Atom.com.
Aurinia XO — MCP booking for a hostel in Kamianets-Podilskyi: check bed availability and reserve.
Auth0 MCP Server: Manage Auth0 applications, APIs, actions, logs, and forms using natural language.
About Development MCP servers
Development is the broadest category on mcp.site. It covers servers that give an AI agent hands-on access to the software lifecycle: sandboxed shells and terminals, version-specific library documentation, package registries, test runners, debuggers, build and deploy pipelines, and project tools such as issue trackers. Most run locally over stdio because they need your filesystem or toolchain; a growing share run as hosted endpoints you connect with an API key or OAuth.
When choosing one, start with what the agent should be able to do without asking you, then check how the server scopes that access. Good servers expose a small, typed set of tools, document every environment variable, and let you restrict paths or repositories. Prefer listings with an Official badge or a recently updated repository, and read the install snippet for your client before adding credentials.