Bazel Mcp

Name: Bazel Mcp
Author: saeid-rez

@saeid-rez

リポジトリ

Bazel Mcp について

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

#bazel #local #build

基本情報

カテゴリ

その他

トランスポート

stdio

公開者

saeid-rez

投稿者

Saeed Rezaei

設定

以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。

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

ツール

Run arbitrary `bazel query` expressions

List targets in a package or subtree

Direct or transitive dependencies of a target

Reverse dependencies within a scope

Rule definition via `query --output=build`

Run `bazel build`

Run `bazel test` with structured results

Read BUILD file contents for analysis

概要

What is Bazel Mcp?

Bazel Mcp is a Model Context Protocol server that exposes Bazel build system capabilities to AI assistants. It is designed for developers who want to interact with a Bazel workspace through an MCP-enabled client such as Cursor.

How to use Bazel Mcp?

Install the server with uvx and add a configuration entry to your MCP client’s JSON file (e.g., .cursor/mcp.json). Bazel commands run in your open workspace by default; if your client does not start from that directory, pass the workspace root explicitly with the --workspace-root flag.

Features of Bazel Mcp

Run arbitrary bazel query expressions
List targets in a package or subtree
Get direct or transitive dependencies of a target
Get reverse dependencies within a scope
Show rule definition via query --output=build
Run bazel build and bazel test
Read BUILD file contents for analysis

Use cases of Bazel Mcp

Ask an AI assistant for the dependencies of a specific Bazel target
Let an AI assistant build or test a target and return structured results
Have an AI assistant explain the contents of a BUILD file
Query the build graph for reverse dependencies during refactoring

FAQ from Bazel Mcp

What does Bazel Mcp do?

It provides tools (bazel_query, list_targets, get_deps, get_rdeps, show_target_info, bazel_build, bazel_test, explain_build_file) that an AI assistant can invoke to inspect and control a Bazel workspace.

What runtime does it require?

The server requires uv to run.

Where are Bazel commands executed?

Commands run in the Bazel workspace that is open in your MCP client by default. If the client does not start the server from the workspace, you must supply the workspace root path via the --workspace-root flag.

Are there any optional configuration flags?

Yes. You can set --bazel-path to specify the Bazel binary (e.g., bazelisk), --timeout to change the command timeout in seconds, and --max-output-chars to limit the number of characters in command output.

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