What is crosstalk?
crosstalk is a Claude Code mod by kbrdn1 that a Claude Mod: /crosstalk opens a pane with this session's conversations with your other Claude Code sessions (peer deliveries in, SendMessage out) and lets you reply from it. It is listed under Interface and has no public popularity data yet.
| Type | Claude code mod |
|---|---|
| Author | kbrdn1 |
| Repository | kbrdn1/claude-crosstalk |
| Popularity | no public popularity data yet |
| Category | Interface |
| Security | Review before installing (68/100) |
| Rank | #3,679 of 5,272 Claude Code mods; #1,533 in Interface |
| License | MIT |
| Last commit | 2026-09-19 |
| Hooks | 8 events |
| Sees | SendMessage calls |
| Draws on | Pane |
Is crosstalk safe to install?
crosstalk scores 68/100 on the MCPMods security check: Review before installing. Things to review: starts processes outside the sandbox; reads environment variables. It passed 4 of 8 checks.
Mod footprints come from claude plugin validate, which lists every event a mod hooks and every API call it makes without running it.
| Check | Result |
|---|---|
| No network access | Pass |
| Starts processes outside the sandbox | Review |
| Writes no files or config | Pass |
| Reads environment variables | Review |
| Only sees the events it hooks | Pass |
| Drives Claude (model calls, prompts) | Note |
| Validator reported problems | Note |
| Has an open-source license | Pass |
API calls in its code
| Call | What it means |
|---|---|
$.clock.after | |
$.clock.every | |
$.clock.now | |
$.command.register | |
$.env.get | reads env vars |
$.process.run | runs processes |
$.session.id | |
$.store.delete | keeps its own state |
$.store.get | keeps its own state |
$.store.keys | keeps its own state |
$.store.set | keeps its own state |
$.tool.call | drives Claude |
$.ui.close | draws interface |
$.ui.focus | draws interface |
$.ui.invalidate | draws interface |
$.ui.open | draws interface |
$.ui.panes | draws interface |
$.ui.resolve | draws interface |
$.ui.status | draws interface |
How do I install crosstalk?
- Check your Claude Code version. Mods need Claude Code 2.1.287 or later and are on by default.
claude --version
- Read its footprint. This lists every event it hooks and every API call it makes, without running it.
git clone https://github.com/kbrdn1/claude-crosstalk claude plugin validate ./claude-crosstalk/.
- Install it. Run this in your terminal, then /reload-plugins in an open session.
claude plugin marketplace add kbrdn1/claude-crosstalk && claude plugin install crosstalk@claude-crosstalk
Or ask Claude to set it up
Paste this into Claude Code and it installs crosstalk for you:
Install the "crosstalk" Claude Code mod from https://github.com/kbrdn1/claude-crosstalk. Run claude plugin validate on it first and show me what it can access before you enable it.