"Official MCP server that runs locally without an API key or paid plan" matching MCP servers:

Enables users to search and read verbatim passages from Terry Bouricius's book 'Democracy Without Politicians', honoring the author's request to display his actual words rather than AI summaries.

Enables querying Context7 V2 documentation through resolve-library-id and query-docs tools, alternating between two API keys and retrying when a key is blocked.

Serves the Pancake API documentation to AI assistants, enabling them to search endpoints, retrieve full API contracts, webhook payloads, and guides without live API access.

MCP server for API discovery from .mind spec files, enabling AI assistants to list, inspect, and call APIs defined in OpenAPI specs.

Enables MCP clients to query upstream documentation through a single search tool, backed by a bundled sample corpus, Vertex AI Search, or an SSH endpoint, returning cited source passages and refusing when nothing relevant is found.

Caches Mailganer API documentation and Postman collection locally, enabling search, sync, and cross-reference between API docs and Postman requests.

MCP server that exposes structured World of Warcraft API data (functions, deprecated replacements, enums, events, widget methods) to AI agents, enabling querying and exploration of WoW API without wiki parsing.

An MCP server that enables AI agents to explore, search, and query API definitions from OpenAPI/Swagger JSON files.

An MCP server that automatically crawls, indexes, and serves API reference documentation for LLMs, enabling to search and retrieve endpoint details.

An MCP server that gives AI coding assistants access to up-to-date API documentation via RAG by crawling documentation sites, indexing them into a vector store, and enabling semantic queries.

Enables read-only exploration of YApi projects, categories, and interface docs, and deterministic TypeScript/JavaScript API request function and type generation through a preview-then-apply workflow.

An MCP server that provides comprehensive xAI/Grok API documentation, allowing AI assistants to search bundled guides, fetch live documentation, and browse API endpoints or model specifications.

Official MinerU MCP server for parsing PDF, DOCX, PPTX, images, and HTML into Markdown. Supports 109-language OCR, Flash mode (no token), and Precision mode (token)

Exposes OpenAPI/Swagger API documentation as MCP tools, enabling AI agents to search, inspect, and call API endpoints through natural language.

Provides the real exported API surface and type signatures of any npm package, extracted from its published TypeScript declarations, enabling AI coding agents to use functions accurately and avoid inventing nonexistent APIs.

Semantic search over IMAGIN.studio API documentation — CDN configuration, integration guides, and data point references.

Enables natural language search of ANSA Python API documentation, allowing AI to find relevant functions, signatures, and code examples for writing ANSA scripts.

An MCP Server for Node.js API documentation

Read-only MCP server for self-hosted Confluence that lets AI agents search pages, fetch content, and navigate page trees via the REST API.

MCP server for GoHighLevel documentation, enabling agents to search docs, list endpoints, and fetch focused API details without loading large files.

Enables searching and retrieving Magento 2 REST API documentation offline via local OpenAPI parsing, supporting endpoint search, schema lookup, and category browsing.

Provides accurate Unreal Engine C++ API documentation to AI agents, preventing hallucinated signatures and incorrect includes.

MCP server providing accurate Unity API documentation to prevent AI agents from hallucinating signatures, namespaces, and deprecated usage.

A version-aware MCP server that provides the World of Warcraft retail AddOn API with pinned documentation snapshots, enabling lookups, searches, comparisons, and diffs of APIs across patches.

MCP server for DayZ Enforce Script that gives AI coding assistants deep knowledge of the DayZ scripting API with semantic search, code validation, class hierarchy, and reverse call graphs.

Enables users to turn any API's documentation into a tested MCP server whose tools expose the API's own operations, with linting, contract tests, and live verification. It accepts OpenAPI/Swagger, Postman, RAML, WSDL, GraphQL, RSS, and HTML docs.

A public MCP server demonstrating how an AI agent can retrieve database schemas and manage local OpenAPI contracts via tools for CRUD operations.

Scrapes the official Telegram Bot API documentation and provides tools for querying methods, types, fields, and relationships.

Provides full Devin API coverage via MCP servers, enabling programmatic management of sessions, knowledge, playbooks, secrets, schedules, and attachments, plus a documentation-only DeepWiki proxy.

An MCP server that provides AI agents with direct access to authoritative Cakemail API specifications, enabling accurate code generation and eliminating hallucination.