"MCP servers that work without API keys" matching MCP connectors:
GET /v1/connectors – MCP directory API referenceMatching Connector Tools:
Search the FAA handbooks, advisory circulars and Airman Certification Standards (ACS) used for pilot training, and read any page in full with its figures, charts and tables. Every result links back to the exact page so answers can be cited. Free, public, no API key.
Free premium UI components in plain HTML, CSS and vanilla JS, for AI coding assistants.
Free, read-only access to Alicia's published English and Chinese notes on Houdini, Three.js, OpenUSD and AI-assisted 3D workflows. Search articles, read full Markdown, browse topics and recent notes. Results include canonical source URLs and author attribution. No account or API key; Streamable HTTP with four read-only tools. Digital Garden is the interactive 3D flower artwork at digitalgarden.si. Setup: https://digitalgarden.si/agents/?utm_source=glama&utm_medium=referral&utm_campaign=listing
Living docs and MCP context for GitHub repos — conventions, gaps, and source-cited pages on merge.
iinventedlight notes is a read-first MCP server for the public iinventedlight library: Cole Withington's notes and papers, plus openly licensed reference notes (CC BY, CC BY-SA, CC0 and public domain), and pages for corrow music and the Starweave app. Reading needs no account or key: list, search, read by section, ask a question, or browse a topic atlas. Agents can leave feedback or a correction without a key, and it stays pending until a person approves it. New notes need an access key and are reviewed by a person before anything is published. Feedback never changes a note's published text.
Ask questions about Claude Code, Cursor, Codex and MCP — get answers grounded in their official docs, with citations. A hybrid RAG service that AI agents call through two MCP tools (or over REST). It indexes ~600 pages of official documentation, refreshes itself daily, and every design choice is backed by an experiment.
Keyless docs/discovery. RPC follows chain policy; indexed data and account tools need an API key.
Documentation MCP server for Sorsa API (https://api.sorsa.io), an independent read-only API for public X/Twitter data. Lets AI assistants search and retrieve the public API documentation, endpoint guides and integration examples. This connector provides documentation, not live X/Twitter data. Documentation: https://docs.sorsa.io.
Documentación de Ecuafact API: facturación electrónica del SRI de Ecuador. Sin credenciales.
Grounded search over chinaready.co — practical guides for launching software in Mainland China (ICP filing, app-store publishing, China cloud regions, payments). Three read-only tools: hybrid search, topic catalog, and full articles as Markdown. Every result carries an absolute source URL so answers can be cited. Free, no account, no keys.
Search and read Protoperfect Labs research, documentation and glossary. Read-only.
Brainstorm scored idea maps, check npm/PyPI packages and vendors, find the right paid API.
Overleaf alternative online LaTeX editor. AI agents edit, comment, and chat. Keep or revert edits.
CapaLens is a read-only software directory for people and AI assistants. Explore 234 software products and 347 MCP, API and CLI interface listings using seven discovery tools. Documentation review does not mean live vendor testing or security testing; no vendor integrations have been tested. CapaLens does not execute vendor actions or collect vendor credentials.
Search and read Web3 security education articles and a 230-term glossary from Onchain Diary.
Version-aware Mobiscroll UI component schemas and examples, plus Connect REST API and SDK knowledge.
Lean operations knowledge base built on DBS: cited answers, tool cards, plans and diagnoses.
Where apps write their log files on Windows, macOS and Linux, as exact copyable paths.
Official community MCP server for the Radix DLT network. Inspect on-ledger entities (accounts, components, packages, resources, validators), search and read curated developer docs, validate and preview Scrypto transaction manifests.
LinkedIn, Slack and GitHub profile photo specs, headshot style guides and a free headshot audit.
