Chisel MCP server

Chisel is a small helper program that gives your AI a safe, tidy way to work with files on your computer. It lets the AI look inside big files, find things, and make careful edits, but only inside one folder you choose. It is handy for anyone who wants their AI to help with documents or code without risking the rest of their machine.

What this MCP server does

You point Chisel at one folder on your computer, called the root. When you ask your AI something about a file, the AI sends a request to Chisel. Chisel checks that the file is inside that folder, then reads, searches, or edits it. For edits, Chisel only sends the changed lines instead of the whole file, which saves a lot of space and money. If something looks wrong, Chisel refuses and leaves your file untouched.

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What you can do with it

• Read parts of a large file instead of the whole thing
• Search for words or patterns inside files
• Edit a file by sending only the changed lines
• Create new files and folders inside the root
• Move or rename files within the root
• Run safe, pre-approved commands like grep, sed, and find
• Work in read-only mode when you do not want changes

Try asking your AI

• “Find all the headings in docs/api.md”
• “Show me the section under Endpoints in docs/api.md”
• “Change GET /v1/items to GET /v2/items in docs/api.md”
• “List every file in the data folder”

What it gives back to you

You get back short, focused answers in the chat: the lines that matched your search, the section you asked for, or a simple confirmation that an edit was made. If an edit does not fit the file, Chisel says so and your file stays as it was. You never see the whole file dumped into the chat unless you ask for it.

Before you start

Who it's for

Anyone who wants their AI to help with files or code in one folder, especially people working with large documents or codebases.