A dependency-free MCP server for AI-context group messaging
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<div align="center"> # Crosstalk MCP Server A dependency-free [Model Context Protocol (MCP)](https://modelcontextprotocol.io/) server for exchanging messages between separate AI contexts. [](https://github.com/CantC0unt/crosstalk/actions/workflows/ci.yml) [](https://github.com/CantC0unt/crosstalk/actions/workflows/codeql.yml) [](https://pypi.org/project/crosstalk-mcp-server/) [](https://pypi.org/project/crosstalk-mcp-server/) [](LICENSE) </div> Crosstalk stores each group in its own SQLite database, making it useful for coordinating agents, sessions, or tools that share a filesystem. > **Trust boundary:** Crosstalk is for trusted collaborators only. Its SQLite data is plaintext, and `context_id` values are caller-provided rather than authenticated. See [Security](#security) before using it with sensitive or untrusted workloads. ## Highlights - Dependency-free Python 3.9+ server using MCP JSON-RPC over standard input/output - Persistent, shared group message history backed by SQLite - Per-context unread tracking, message search, cursors, and full-history retrieval - Targeted wakeup hints through explicit recipients, `@context_id`, `@name`, or `@all` mentions - MCP resource subscriptions for group changes and targeted wakeup notifications ## Quick start Install from PyPI: ```sh python3 -m pip install --user --upgrade crosstalk-mcp-server ``` To install from a checkout instead: ```sh python3 -m pip install --user --upgrade . ``` Confirm that the command is available: ```sh command -v crosstalk-mcp ``` Then add the server to your MCP client. For Codex, put this in `~/.codex/config.toml`:…
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