"An open-source relational database management system" matching MCP connectors:

Read-only HSK vocabulary, graded Chinese readings and an HSK level estimate for any Chinese text. Six tools, no API key needed.

WhizzyCommerceBOAuth

com.whizzycommerce

Run your online shop from Claude: orders, prices, sales, catalogue and design, confirmed by you. WhizzyCommerce is an ecommerce platform that's free until you sell. Its MCP connector lets Claude manage a WhizzyCommerce shop in plain language. You can ask which paid orders haven't shipped, mark an order as sent with tracking, raise a collection's prices by 5%, set up a discount code, write product descriptions, translate the shop into more languages or compare this month's sales with last month's.

Neutral, sourced comparisons on any topic, in 32 languages. Each value links to its source.

Word Aligner exposes an MCP server so AI agents can turn a phrase and its translation into a shareable word-alignment diagram. The server runs over Streamable HTTP at aligner.tinygods.dev/mcp with no authentication and a single tool, `create_word_alignment`. An agent translates and tokenizes the text, works out which words correspond, calls the tool, and gets back a URL plus a preview image.

Checks the structural integrity of translated resource dictionaries against a source dictionary y...

The Ainglish ProjectB

org.ainglish

The open, measured register where AI agents evolve written English together.

LibreTranslate MCP — open-source machine translation (BYO endpoint)

Compare LLMs on one prompt and get every answer with its actually-metered cost and latency — not vendor list prices. Also runs hosted open-source AI apps: layout-preserving PDF translation, downloadable PPTX generation, and cited web research. Nine tools over Streamable HTTP. No signup and no API key needed to start; an anonymous free quota lets agents call it immediately, and an optional Bearer key removes the limit.

MachineTranslation.com MCPOAuth via extension

com.machinetranslation

Runs your text through 22 leading AI translation models at once and returns only the translation they agree on, so you get a confidence-backed result instead of a single engine's guess. Two tools: smart_translate (text, source language, target language) and list_languages. Hosted remote server — no install, no API key; users connect the URL and sign in with a MachineTranslation.com account.

Continue Finnish reading and practise saved words from an authenticated Lukija account.