bazel-mcp
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| timeout | No | Timeout in seconds for Bazel commands (default: 300) | 300 |
| bazel-path | No | Path to the Bazel executable (default: bazel) | bazel |
| workspace-root | No | Path to the Bazel workspace root (default: current directory) | |
| max-output-chars | No | Maximum output characters to capture (default: 64000) | 64000 |
Capabilities
Features and capabilities supported by this server
| Capability | Details |
|---|---|
| tools | {
"listChanged": false
} |
| prompts | {
"listChanged": false
} |
| resources | {
"subscribe": false,
"listChanged": false
} |
| experimental | {} |
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
| bazel_buildB | Run a Bazel build and return stdout, stderr, and exit code. options are passed as extra bazel flags (e.g. --config=ci, -c opt). |
| bazel_testB | Run Bazel tests and return structured pass/fail results with failure log excerpts. |
| explain_build_fileB | Return BUILD file contents for analysis by the host LLM. path is relative to the workspace root (e.g. foo/bar/BUILD or foo/bar). |
| bazel_queryA | Run an arbitrary Bazel query expression. Query is read-only but can be expensive on broad patterns like //... output_format: label, build, xml, package, location, graph, etc. |
| list_targetsA | List all targets matching a package pattern. Default //... lists targets across the entire workspace (can be slow). For a single package use //pkg or pkg (normalized to //pkg:all). For a subtree use //pkg/... |
| get_depsA | Get dependencies of a target up to the given depth, excluding the target itself. |
| get_rdepsA | Find reverse dependencies of a target within scope, excluding the target itself. |
| show_target_infoA | Show the BUILD rule definition for a target (bazel query --output=build). Macro-generated targets may differ from on-disk BUILD files. |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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