# claude-session-bus

> Use this tool when you need to facilitate communication between multiple Claude Code sessions sharing a project root. It solves the problem of session isolation by enabling the broadcast of short messages via a JSONL mailbox, allowing for seamless information exchange. With a simple interface for sending messages as an MCP tool and receiving them as a prompt hook, it provides an efficient solution for coordinating sessions in a shared project context.

Canonical page: https://skillsregistry.net/skills/exalsch-claude-session-bus  
JSON: https://api.skillsregistry.net/v1/skills/exalsch-claude-session-bus

## Description

Enables Claude Code sessions sharing a project root to broadcast short messages to each other via a JSONL mailbox, with sending as an MCP tool and receiving as a prompt hook.

## Trust

- **Trust score (0–1):** 0.67
- **Verification tier:** scanned
- **Last scanned:** 2026-08-30

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** mcp-remote
- **Runtime environment:** api
- **Category:** ai-ml
- **Updated:** 2026-08-30

## Source

- **Source listing:** [Glama](https://glama.ai/mcp/servers/fevtuhtx9u)
- **Repository:** <https://github.com/exalsch/claude-session-bus>

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "exalsch-claude-session-bus"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/exalsch-claude-session-bus` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/exalsch-claude-session-bus/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt