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About
Subxt is a library for interacting with chains in the Polkadot network. It can:
- Submit Extrinsics (this is where the name comes from).
- Access information at any block (eg storage values, constants, Runtime APIs, View Functions).
- Subscribe to new blocks (and then do the above at them).
- Do all of the above via a safe, statically typed interface or via a flexible dynamic interface.
- Do most of the above via a built-in light client to interact with chains trustlessly.
- Compile to WASM and run entirely in the browser, or be called via FFI in many other languages.
- Be used entirely offline to provide a subset of the available functionality.
Take a look at the single-file examples folder or the project based examples folder for various smaller or larger subxt usage examples, or read the docs to learn more.
The "hello world" example of Subxt is submitting a transaction. This is what it looks like:
Works with Claude (desktop and mobile), Cursor, Windsurf, VS Code, and any MCP-compatible AI app.
Category: Developer Tools
Don't lose this
Three weeks from now, you'll want subxt again. Will you remember where to find it?
Save it to your library and the next time you need subxt, it’s one tap away — from any AI app you use. Group it into a bench with the rest of the team for that kind of task and you can pull the whole stack at once.
⚡ Pro tip for geeks: add a-gnt 🤵🏻♂️ as a custom connector in Claude or a custom GPT in ChatGPT — one click and your library is right there in the chat. Or, if you’re in an editor, install the a-gnt MCP server and say “use my [bench name]” in Claude Code, Cursor, VS Code, or Windsurf.
a-gnt's Take
Our honest review
This plugs directly into your AI and gives it new abilities it didn't have before. subxt. Once connected, just ask your AI to use it. It's completely free and works across most major AI apps. This one just landed in the catalog — worth trying while it's fresh.
Tips for getting started
Tap "Get" above, pick your AI app, and follow the steps. Most installs take under 30 seconds.
What's New
Imported from awesome:punkpeye/awesome-mcp-servers
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