Context Mode MCP Server: Setup for Claude Code, Cursor and Other Apps

• Runs code and returns only what it prints

  Runs code in a subprocess in one of 12 languages and sends back only the printed output, so a big log or file is analyzed without filling the chat. The code has your computer's file and network access.

  Try: “Count the lines in every .ts file under src and print only the totals.”

  Runs code · ctx_execute

• Processes a file with code, without reading it into the chat

  Runs code over a file and returns only the result. It is limited to the project folder unless you allow other paths in your permission rules.

  Try: “Run a script over logs/access.log and report the 10 most common URLs.”

  Runs code · ctx_execute_file

• Runs several commands and searches in one call

  Runs a list of commands and then searches the output for several questions in one step. You can run up to 8 at once.

  Try: “Run git log, git status and npm test, then tell me what failed.”

  Runs code · ctx_batch_execute

• Downloads a web page and stores it for search

  Fetches one or more URLs, splits them into chunks and adds them to the local search index. It reuses a recent copy for 24 hours by default. It refuses cloud-metadata addresses and non-web links.

  Try: “Fetch the Stripe webhooks docs and index them.”

  Write · ctx_fetch_and_index

• Stores text or a file in the local search index

  Splits Markdown or file content into chunks and adds it to a local database for search.

  Try: “Index docs/architecture.md so I can ask questions about it.”

  Write · ctx_index

• Searches what you indexed

  Runs several queries at once over the indexed content and returns only the matching parts.

  Try: “Search the index for how authentication tokens are refreshed.”

  Read · ctx_search

• Permanently deletes indexed content

  Deletes the stored search index for a scope you pick. It cannot be undone and needs an explicit confirmation.

  Try: “Purge the knowledge base for this session.”

  Delete · ctx_purge

• Used by the assistant behind the scenes

  Shows how much context you saved

  Returns the bytes sent to the chat, a breakdown by tool, call counts and the savings ratio for this session.

  Try: “Show my context savings so far.”

  Read · ctx_stats

• Checks that the install works

  Runs checks on languages, hooks and the search database and prints a status report.

  Try: “Run the Context Mode diagnostics.”

  Read · ctx_doctor

• Gives the command to update it

  Returns a shell command that updates Context Mode from GitHub, rebuilds it and fixes hooks. The assistant then runs that command in your shell.

  Try: “Upgrade Context Mode.”

  Runs code · ctx_upgrade

• Opens the hosted Insight dashboard

  Opens the Context Mode Insight dashboard on context-mode.com in your browser. It is a launcher for the hosted analytics page.

  Try: “Open the Insight dashboard.”

  Network · ctx_insight

Watch out for

• It runs arbitrary code with your access

  Three tools run code you or the assistant write, with full network access. The README calls the file guard defense in depth, not an operating system sandbox. github.com

• It records your session in a local database

  File edits, git actions, tasks, errors and decisions are tracked in SQLite so the session can resume after compaction. Tool inputs are redacted for common secret names, but check the folder if you work with sensitive code. github.com

• Fetch can reach your local network

  Localhost and private network addresses are allowed by default. Set CTX_FETCH_STRICT to 1 to block them. github.com

• Purge deletes the index for good

  ctx_purge cannot be undone. It needs confirm set to true and one scope. github.com

• It can use your deny rules

  Rules you set in Claude Code settings, such as blocking sudo, also apply inside its code tools. Add them before you use it. github.com

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