"A tool or library for generating graphs or visualizations" matching MCP servers:

MCP server that provides OpenRouter model pricing data, enabling price lookups, trending/cheapest lists, and model searches without an API key.

An MCP server that enables interaction with Markdown knowledge bases, allowing users to search and retrieve content by tags, text, URL, or date range from their local markdown files.

A custom MCP tool that integrates Perplexity AI's API with Claude Desktop, allowing Claude to perform web-based research and provide answers with citations.

Semantic navigator for MCP tools that finds relevant tools by natural language intent, reducing token usage by 95%.

Exposes a locally built, searchable index of your saved Instagram reels — AI summaries, key points, transcripts, categories, and every extracted tool, place, product, and link — to any AI assistant over MCP. Enables chat-based search and retrieval across the whole collection without leaving the conversation.

MCP server for searching and retrieving trading knowledge from a centralized SQLite library of book summaries, strategies, and document chunks.

Enables a persistent local library for mathematical PDFs with cached LaTeX extraction, full-text search in English and Greek, and page/image retrieval over MCP.

A Model Context Protocol (MCP) server for the Open Library API that enables AI assistants to search for book information.

This MCP server enables AI agents to search and retrieve exact, cited passages from a large corpus of public-domain books, including full-text search, book metadata, chapters, quotes, and 'ask book' Q&A. Payments are handled via x402 micropayments on Base.

Enables Claude clients to access a private local book library, allowing users to list books, search content, and retrieve metadata, chapter summaries, action items, personal notes, and infographic text through MCP tools.

Connects AI assistants to the Open Library API for searching books and authors, retrieving metadata, and comparing works.

A local stdio MCP server that enables AI tools to search a self-hosted Calibre library over SSH, supporting metadata queries, full-text search, and book details.

Enables locally-first literature research through an MCP host by collecting sources, parsing documents, retrieving evidence, validating citations, and exporting research records in multiple formats.

Enables AI assistants to search a university library's catalog by keyword, title, author, subject, or ISBN, and to check each copy's real-time availability, floor location, and expected return date. Also provides recommended reading lists, new arrivals, and search-term suggestions, with raw holdings data parsed into readable output.

Enables searching and scraping the public Facebook Ad Library to extract structured ad data such as advertiser, copy, landing URLs, and CTAs for competitive research, all without an account or API token.

Provides access to Internet Archive's Open Library metadata, enabling queries about books, authors, and subjects via natural language through the Pipeworx gateway.

Enables assistants to discover recipes and search source passages, then complete cited reads with qualifications and reviewed dependency expansion. It supports source-backed cooking evidence through recipe search, batch reads, knowledge search, and passage continuations.

Enables Claude or any LLM to manage a book library via MCP tools, allowing listing, searching, creating, updating, and deleting books through natural language.

Enables access to LDS Gospel Library content and scriptures through the Model Context Protocol. Provides tools for searching and retrieving religious texts and study materials from the Church of Jesus Christ of Latter-day Saints.

Enables searching books, generating APA 7 citations, reserving available copies, and finding alternative books from a MySQL-backed library catalog through MCP.