Full-featured Ephemeral Buffer MCP server with hybrid search
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# Ephemeral Buffer MCP Server (`ephemeral-buffer`) [](https://github.com/k-rister/ephemeral-buffer-mcp/actions/workflows/ci.yml) [](https://github.com/k-rister/ephemeral-buffer-mcp/blob/main/LICENSE) [](https://www.python.org/) [](https://pypi.org/project/ephemeral-buffer-mcp/) [](https://codecov.io/gh/k-rister/ephemeral-buffer-mcp) Ephemeral Buffer is an MCP server and command-line client for capturing command output in a bounded, searchable buffer. Coding agents can search captures and retrieve relevant portions instead of carrying entire build and test logs in their conversation context. ## Quick start Requires Python 3.11 or newer. Install the package in an isolated environment. **macOS and Linux** ```bash python3 -m venv .venv .venv/bin/python -m pip install --upgrade pip .venv/bin/python -m pip install ephemeral-buffer-mcp ``` The default distribution includes BM25, semantic, and hybrid search. To explicitly choose the smaller lexical-only install, use `ephemeral-buffer-mcp-lexical`; it supports BM25 while semantic and hybrid search require the full distribution. Configure your MCP client using the [user guide](https://github.com/k-rister/ephemeral-buffer-mcp/blob/main/docs/user-guide.md). For an isolated server, the server and `ephbuf` must use the same unique session ID. On macOS/Linux, export the ID before starting Codex with the launcher installed in the virtual environment: ```bash export EPHEMERAL_SESSION_ID=quick-start-session .venv/bin/codex-ephemeral ``` Set the same value in another MCP client's server environment. Then capture command output with `ephbuf`,…
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