Symbol Bridge
Your files. Your keys. Your machine.
A free companion extension that lets AI attach local files to Symbol — and decrypt private capsules without them ever leaving your computer.
What Symbol Bridge adds
Attach local files
Logs, screenshots, configs — straight from your disk into a capsule.
Decrypt locally
Read end-to-end encrypted capsules. Plaintext never leaves your machine.
Runs on your machine
A small local companion to the hosted Symbol MCP. Keep both connected.
Setup
Installed in a minute.
1. Download
Grab the extension bundle.
2. Open
Claude Desktop confirms the install.
3. Ask
“Save this screenshot to Symbol.”
Requires the hosted Symbol MCP to be connected first.
Attachment limits
- per file
- 25 MBper file
- per capsule
- 50 MBper capsule
- files per request
- 10files per request
- file type
- Anyfile type
FAQ
Good to know.
Do I need Symbol Bridge?
Only for two things: attaching files stored on your own computer, and reading end-to-end encrypted capsules. Everything else — saving, searching, and loading context — works with the hosted Symbol MCP alone.
Does it replace the Symbol MCP?
No. It's a companion. Connect the hosted Symbol MCP first, then add Symbol Bridge alongside it and keep both running.
What does it cost?
Nothing. Symbol Bridge is free and included with every Symbol account.
Which apps does it work with?
It ships as a Claude Desktop extension (.mcpb). Any MCP client that supports local stdio servers can run it, though Claude Desktop is the supported install path.