LocalCan

Ask your AI assistant to inspect captured traffic, manage Public URLs, and publish offline Snapshots through LocalCan's MCP server.

- Inspect captured traffic— Ask your assistant to list recent HTTP exchanges withlist_trafficand view details of any exchange viaget_exchange.
- Create and manage Public URLs— Have your assistant create a tunnel withcreate_public_url, list existing ones withlist_public_urls, and pause or resume them.
- Publish offline Snapshots— Ask your assistant to publish a folder as a Snapshot withpublish_snapshotso a link stays reachable when your machine is offline.
- Protect URLs with passwords— Have your assistant password-protect a Public URL withset_passwordand check protection viaget_access_status.
- Check capture status— Ask your assistant to verify whether capture is on and how much traffic is buffered withget_status.

localcan mcpruns a Model Context Protocol server over stdio. An MCP host (Claude Code, Codex, Cursor, Claude Desktop, and others) launches it and calls LocalCan's tools to read captured traffic, manage Public URLs (tunnels), and publish Snapshots. LocalCan must be running for the tools to return data, so open the desktop app or runlocalcan start -dfirst.

The server exposes twenty tools. Reading works out of the box. The eleven tools that change things need write access, which is off by default (see the switches below). Creating or adding a Public URL needs an active license. Publishing a Snapshot and password-protecting a URL need a subscription plan, so a perpetual license is turned away even though it can still open Public URLs. Unlicensed, the gated tools return a clear activation message, while pausing, resuming, and removing existing URLs still work.

An exchange is the request LocalCan forwarded to your backend, not a byte-for-byte copy of the client's original request. SeeTrafficfor the data model.

How you connect depends on how the agent runs. Terminal agents (Claude Code, Codex) inherit your shell PATH, so a barelocalcancommand works. GUI apps (Cursor, Claude Desktop, VS Code, and others) do not load your shell PATH, so they need the absolute path to the binary, for example/Users/you/.localcan/bin/localcan. The desktop app's Settings can copy a ready-made config with the right path filled in, which is also the reliable route on Windows.

claude mcp add --scope user localcan -- localcan mcp

Flag--scope userregisters the server for every project. Drop it to register it only in the current project.

This writes the server to~/.codex/config.toml. For the Codex desktop app or IDE extension, pass the absolute path in place oflocalcan.

{ "mcpServers": { "localcan": { "command": "/Users/you/.localcan/bin/localcan", "args": ["mcp"] } } }

- Cursor:~/.cursor/mcp.json, then enable the server in Settings.
- Claude Desktop:claude_desktop_config.json(Settings, Developer, Edit Config), then quit and relaunch.
- Windsurf:~/.codeium/windsurf/mcp_config.json, then refresh the MCP panel.

VS Code (Copilot agent mode) uses aserverskey with an explicit type. Add this to.vscode/mcp.jsonin your workspace:

{ "servers": { "localcan": { "type": "stdio", "command": "/Users/you/.localcan/bin/localcan", "args": ["mcp"] } } }

You can also runcode --add-mcpwith the same server object.

Zed usescontext_serversin itssettings.json:

{ "context_servers": { "localcan": { "source": "custom", "command": "/Users/you/.localcan/bin/localcan", "args": ["mcp"] } } }

You can also add it from the Agent Panel settings.

Agent access, redaction, and write access

All three are controlled in the desktop app under Settings (the "AI Agents (MCP)" section), or from the terminal:localcan mcp enable/disablefor agent access,localcan mcp redact <on|off>for redaction,localcan mcp access <read_only|read_write>for write access, andlocalcan mcp statusto see the current state.

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