September 29, 2026
Free MCP servers
The best upgrade you can give an AI assistant costs nothing. It isn’t a new model or a premium tier. It’s a connector.
Every server below is open source, part of the reference set, or has a free way to start. (“Free to start” sometimes means a free tier with limits, so check current terms before you build a habit around one.) We’ve leaned on the ones that add a capability Claude genuinely lacks.
Disclosure, up front: we build Enrichr, so it appears on this list. We’ve tried to say exactly why, and to be straight about where the others are the better tool.
01 Enrichr (free plan)our pick
The free plan includes 25 credits a month and access to every extraction tool. A design-system read costs 1 credit and a full rebuild brief costs 5, so 25 credits is enough for a real project. The pricing page has a calculator if you want to plan your usage.
02 Filesystem
Part of the reference server set. Gives Claude read and write access to folders you choose, so it can work on real files instead of pasted snippets.
03 Memory
A reference server that keeps a simple knowledge graph between sessions, so Claude can remember your preferences and project facts instead of starting from zero each time.
04 Sequential Thinking
A structured way for Claude to work through multi-step problems and revise its own reasoning. Small, free and surprisingly useful on hard tasks.
05 Fetch
Pulls a URL and converts it to markdown. It’s the simplest way to let Claude read static pages and documentation.
06 Git
Read and search repository history from a local checkout: diffs, logs, blame. Ideal for “when and why did this change”.
07 Playwright
Open-source browser automation from Microsoft. Free to run yourself, and the standard answer to “let Claude use a browser”.
08 Context7
Current library documentation on demand. It has a free way to get started and is one of the most-recommended servers among developers.
09 GitHub
The official server is open source. You supply a token with only the scopes you need, and the free GitHub tier is enough to use it.