Bazel MCP

★ 2

from saeid-rez

A local MCP server that exposes Bazel build system capabilities to AI assistants.

🔥🔥🔥✓ VerifiedFreeAdvanced setup

#git

Bazel MCP

A Model Context Protocol server that exposes Bazel build system capabilities to AI assistants.

Repo: github.com/saeid-rez/bazel-mcp

Tools

Tool	Description
`bazel_query`	Run arbitrary `bazel query` expressions
`list_targets`	List targets in a package or subtree
`get_deps`	Direct or transitive dependencies of a target
`get_rdeps`	Reverse dependencies within a scope
`show_target_info`	Rule definition via `query --output=build`
`bazel_build`	Run `bazel build` with structured failure diagnostics
`bazel_test`	Run `bazel test` with structured target and failed-case results
`explain_build_file`	Read BUILD file contents for analysis

Development

Clone the repo and run tests locally:

git clone https://github.com/saeid-rez/bazel-mcp
cd bazel-mcp
uv sync --group dev
uv run pytest

Copy & paste — that's it

git clone https://github.com/saeid-rez/bazel-mcp
cd bazel-mcp
uv sync --group dev
uv run pytest

Usage

Run against a Bazel workspace. Open that repo in Cursor, then add to .cursor/mcp.json:

{
  "mcpServers": {
    "bazel": {
      "command": "uvx",
      "args": ["--from", "git+https://github.com/saeid-rez/bazel-mcp", "bazel-mcp"]
    }
  }
}

Requires uv. Bazel commands run in your open workspace by default.

If your MCP client does not start the server from the Bazel workspace, pass the workspace explicitly:

{
  "mcpServers": {
    "bazel": {
      "command": "uvx",
      "args": [
        "--from",
        "git+https://github.com/saeid-rez/bazel-mcp",
        "bazel-mcp",
        "--workspace-root",
        "/path/to/your/bazel/workspace"
      ]
    }
  }
}

Other optional flags:

bazel-mcp --bazel-path bazelisk --timeout 600 --max-output-chars 64000