Semantic intelligence layer for SQL Server and Oracle databases, exposed via MCP. A database understanding engine for AI agents (Claude Code CLI, Codex CLI, Claude Desktop, etc.).
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# db-semantic-mcp MCP tools for SQL Server and Oracle: discover objects, inspect relationships and run SQL within explicit permissions. Read-only by default. Supports Codex, Claude Code, Claude Desktop and Cursor. [繁體中文](README.zh-TW.md) · [English](README.en.md) · [Oracle live testing](docs/testing-oracle.md) · [Validation evidence](docs/validation-0.8.0.md) Compatibility targets: SQL Server 2017+, Oracle 19c+, Python 3.11+. The actual live matrix uses SQL Server 2022 and Oracle 23.26.3, with Oracle Thin/Thick and TCP/TCPS. Exact Oracle 19c and LDAP current-user links have not been live certified. ## Install 0.8.0 from source or a built wheel Product/CLI/MCP name: `db-semantic-mcp`. Python module: `db_semantic_mcp`. Distribution: **`lukestack-db-semantic-mcp`**. This release has not been published to PyPI. The generic PyPI name belongs to another project. The GitHub repository is `LukeStackLab/db-semantic-mcp`. ```bash git clone https://github.com/LukeStackLab/db-semantic-mcp.git db-semantic-mcp cd db-semantic-mcp # SQL Server only; Oracle driver/client are unnecessary uv tool install --python 3.11 --reinstall . # Oracle support (also includes SQL Server) uv tool install --python 3.11 --reinstall '.[oracle]' db-semantic-mcp --version db-semantic-mcp --help ``` Install [uv](https://docs.astral.sh/uv/getting-started/installation/) first. If uv reports a PATH issue, run `uv tool update-shell` and reopen the terminal. For a local build: ```bash uv build uv tool install --reinstall './dist/lukestack_db_semantic_mcp-0.8.0-py3-none-any.whl[oracle]' ``` Thin is the default and needs no Oracle Client. Thick requires matching official Oracle Client libraries, explicit `driver_mode: "thick"`, and `client_lib_dir` when needed. Mode is process-wide: use a fresh MCP process for each mode. See [official driver installation](https://python-oracledb.readthedocs.io/en/stable/user_guide/installation.html) and [initialization](https://python-oracledb.readthedocs.io/en/stable…
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