diff --git a/tools/ide_query/go.mod b/tools/ide_query/go.mod
new file mode 100644
index 0000000..f9d727f
--- /dev/null
+++ b/tools/ide_query/go.mod
@@ -0,0 +1,7 @@
+module ide_query
+
+go 1.21
+
+require (
+  	google.golang.org/protobuf v0.0.0
+)
diff --git a/tools/ide_query/go.work b/tools/ide_query/go.work
new file mode 100644
index 0000000..851f352
--- /dev/null
+++ b/tools/ide_query/go.work
@@ -0,0 +1,9 @@
+go 1.21
+
+use (
+	.
+)
+
+replace (
+	google.golang.org/protobuf v0.0.0 => ../../../../external/golang-protobuf
+)
\ No newline at end of file
diff --git a/tools/ide_query/go.work.sum b/tools/ide_query/go.work.sum
new file mode 100644
index 0000000..cf42b48
--- /dev/null
+++ b/tools/ide_query/go.work.sum
@@ -0,0 +1,5 @@
+github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
+github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
+golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.26.0-rc.1 h1:7QnIQpGRHE5RnLKnESfDoxm2dTapTZua5a0kS0A+VXQ=
+google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
diff --git a/tools/ide_query/ide_query.go b/tools/ide_query/ide_query.go
new file mode 100644
index 0000000..c1c4da0
--- /dev/null
+++ b/tools/ide_query/ide_query.go
@@ -0,0 +1,265 @@
+// Binary ide_query generates and analyzes build artifacts.
+// The produced result can be consumed by IDEs to provide language features.
+package main
+
+import (
+	"container/list"
+	"context"
+	"encoding/json"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+	"path"
+	"slices"
+	"strings"
+
+	"google.golang.org/protobuf/proto"
+	pb "ide_query/ide_query_proto"
+)
+
+// Env contains information about the current environment.
+type Env struct {
+	LunchTarget LunchTarget
+	RepoDir     string
+	OutDir      string
+}
+
+// LunchTarget is a parsed Android lunch target.
+// Input format: <product_name>-<release_type>-<build_variant>
+type LunchTarget struct {
+	Product string
+	Release string
+	Variant string
+}
+
+var _ flag.Value = (*LunchTarget)(nil)
+
+// // Get implements flag.Value.
+// func (l *LunchTarget) Get() any {
+// 	return l
+// }
+
+// Set implements flag.Value.
+func (l *LunchTarget) Set(s string) error {
+	parts := strings.Split(s, "-")
+	if len(parts) != 3 {
+		return fmt.Errorf("invalid lunch target: %q, must have form <product_name>-<release_type>-<build_variant>", s)
+	}
+	*l = LunchTarget{
+		Product: parts[0],
+		Release: parts[1],
+		Variant: parts[2],
+	}
+	return nil
+}
+
+// String implements flag.Value.
+func (l *LunchTarget) String() string {
+	return fmt.Sprintf("%s-%s-%s", l.Product, l.Release, l.Variant)
+}
+
+func main() {
+	var env Env
+	env.OutDir = os.Getenv("OUT_DIR")
+	env.RepoDir = os.Getenv("ANDROID_BUILD_TOP")
+	flag.Var(&env.LunchTarget, "lunch_target", "The lunch target to query")
+	flag.Parse()
+	files := flag.Args()
+	if len(files) == 0 {
+		fmt.Println("No files provided.")
+		os.Exit(1)
+		return
+	}
+
+	var javaFiles []string
+	for _, f := range files {
+		switch {
+		case strings.HasSuffix(f, ".java") || strings.HasSuffix(f, ".kt"):
+			javaFiles = append(javaFiles, f)
+		default:
+			log.Printf("File %q is supported - will be skipped.", f)
+		}
+	}
+
+	ctx := context.Background()
+	javaDepsPath := path.Join(env.RepoDir, env.OutDir, "soong/module_bp_java_deps.json")
+	// TODO(michaelmerg): Figure out if module_bp_java_deps.json is outdated.
+	runMake(ctx, env, "nothing")
+
+	javaModules, err := loadJavaModules(javaDepsPath)
+	if err != nil {
+		log.Fatalf("Failed to load java modules: %v", err)
+	}
+
+	fileToModule := make(map[string]*javaModule) // file path -> module
+	for _, f := range javaFiles {
+		for _, m := range javaModules {
+			if !slices.Contains(m.Srcs, f) {
+				continue
+			}
+			if fileToModule[f] != nil {
+				// TODO(michaelmerg): Handle the case where a file is covered by multiple modules.
+				log.Printf("File %q found in module %q but is already covered by module %q", f, m.Name, fileToModule[f].Name)
+				continue
+			}
+			fileToModule[f] = m
+		}
+	}
+
+	var toMake []string
+	for _, m := range fileToModule {
+		toMake = append(toMake, m.Name)
+	}
+	fmt.Printf("Running make for modules: %v\n", strings.Join(toMake, ", "))
+	if err := runMake(ctx, env, toMake...); err != nil {
+		log.Fatalf("Failed to run make: %v", err)
+	}
+
+	var sources []*pb.SourceFile
+	type depsAndGenerated struct {
+		Deps      []string
+		Generated []*pb.GeneratedFile
+	}
+	moduleToDeps := make(map[string]*depsAndGenerated)
+	for _, f := range files {
+		file := &pb.SourceFile{
+			Path:       f,
+			WorkingDir: env.RepoDir,
+		}
+		sources = append(sources, file)
+
+		m := fileToModule[f]
+		if m == nil {
+			file.Status = &pb.Status{
+				Code:    pb.Status_FAILURE,
+				Message: proto.String("File not found in any module."),
+			}
+			continue
+		}
+
+		file.Status = &pb.Status{Code: pb.Status_OK}
+		if moduleToDeps[m.Name] != nil {
+			file.Generated = moduleToDeps[m.Name].Generated
+			file.Deps = moduleToDeps[m.Name].Deps
+			continue
+		}
+
+		deps := transitiveDeps(m, javaModules)
+		var generated []*pb.GeneratedFile
+		outPrefix := env.OutDir + "/"
+		for _, d := range deps {
+			if relPath, ok := strings.CutPrefix(d, outPrefix); ok {
+				contents, err := os.ReadFile(d)
+				if err != nil {
+					fmt.Printf("Generated file %q not found - will be skipped.\n", d)
+					continue
+				}
+
+				generated = append(generated, &pb.GeneratedFile{
+					Path:     relPath,
+					Contents: contents,
+				})
+			}
+		}
+		moduleToDeps[m.Name] = &depsAndGenerated{deps, generated}
+		file.Generated = generated
+		file.Deps = deps
+	}
+
+	res := &pb.IdeAnalysis{
+		BuildArtifactRoot: env.OutDir,
+		Sources:           sources,
+		Status:            &pb.Status{Code: pb.Status_OK},
+	}
+	data, err := proto.Marshal(res)
+	if err != nil {
+		log.Fatalf("Failed to marshal result proto: %v", err)
+	}
+
+	err = os.WriteFile(path.Join(env.OutDir, "ide_query.pb"), data, 0644)
+	if err != nil {
+		log.Fatalf("Failed to write result proto: %v", err)
+	}
+
+	for _, s := range sources {
+		fmt.Printf("%s: %v (Deps: %d, Generated: %d)\n", s.GetPath(), s.GetStatus(), len(s.GetDeps()), len(s.GetGenerated()))
+	}
+}
+
+// runMake runs Soong build for the given modules.
+func runMake(ctx context.Context, env Env, modules ...string) error {
+	args := []string{
+		"--make-mode",
+		"ANDROID_BUILD_ENVIRONMENT_CONFIG=googler-cog",
+		"TARGET_PRODUCT=" + env.LunchTarget.Product,
+		"TARGET_RELEASE=" + env.LunchTarget.Release,
+		"TARGET_BUILD_VARIANT=" + env.LunchTarget.Variant,
+	}
+	args = append(args, modules...)
+	cmd := exec.CommandContext(ctx, "build/soong/soong_ui.bash", args...)
+	cmd.Dir = env.RepoDir
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+type javaModule struct {
+	Name    string
+	Path    []string `json:"path,omitempty"`
+	Deps    []string `json:"dependencies,omitempty"`
+	Srcs    []string `json:"srcs,omitempty"`
+	Jars    []string `json:"jars,omitempty"`
+	SrcJars []string `json:"srcjars,omitempty"`
+}
+
+func loadJavaModules(path string) (map[string]*javaModule, error) {
+	data, err := os.ReadFile(path)
+	if err != nil {
+		return nil, err
+	}
+
+	var ret map[string]*javaModule // module name -> module
+	if err = json.Unmarshal(data, &ret); err != nil {
+		return nil, err
+	}
+
+	for name, module := range ret {
+		if strings.HasSuffix(name, "-jarjar") || strings.HasSuffix(name, ".impl") {
+			delete(ret, name)
+			continue
+		}
+
+		module.Name = name
+	}
+	return ret, nil
+}
+
+func transitiveDeps(m *javaModule, modules map[string]*javaModule) []string {
+	var ret []string
+	q := list.New()
+	q.PushBack(m.Name)
+	seen := make(map[string]bool) // module names -> true
+	for q.Len() > 0 {
+		name := q.Remove(q.Front()).(string)
+		mod := modules[name]
+		if mod == nil {
+			continue
+		}
+
+		ret = append(ret, mod.Srcs...)
+		ret = append(ret, mod.SrcJars...)
+		ret = append(ret, mod.Jars...)
+		for _, d := range mod.Deps {
+			if seen[d] {
+				continue
+			}
+			seen[d] = true
+			q.PushBack(d)
+		}
+	}
+	slices.Sort(ret)
+	ret = slices.Compact(ret)
+	return ret
+}
diff --git a/tools/ide_query/ide_query.sh b/tools/ide_query/ide_query.sh
new file mode 100755
index 0000000..663c4dc
--- /dev/null
+++ b/tools/ide_query/ide_query.sh
@@ -0,0 +1,12 @@
+#!/bin/bash -e
+
+cd $(dirname $BASH_SOURCE)
+source $(pwd)/../../shell_utils.sh
+require_top
+
+# Ensure cogsetup (out/ will be symlink outside the repo)
+. ${TOP}/build/make/cogsetup.sh
+
+export ANDROID_BUILD_TOP=$TOP
+export OUT_DIR=${OUT_DIR}
+exec "${TOP}/prebuilts/go/linux-x86/bin/go" "run" "ide_query" "$@"
diff --git a/tools/ide_query/ide_query_proto/ide_query.pb.go b/tools/ide_query/ide_query_proto/ide_query.pb.go
new file mode 100644
index 0000000..30571cc
--- /dev/null
+++ b/tools/ide_query/ide_query_proto/ide_query.pb.go
@@ -0,0 +1,522 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.30.0
+// 	protoc        v3.21.12
+// source: ide_query.proto
+
+package ide_query_proto
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	sync "sync"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type Status_Code int32
+
+const (
+	Status_OK      Status_Code = 0
+	Status_FAILURE Status_Code = 1
+)
+
+// Enum value maps for Status_Code.
+var (
+	Status_Code_name = map[int32]string{
+		0: "OK",
+		1: "FAILURE",
+	}
+	Status_Code_value = map[string]int32{
+		"OK":      0,
+		"FAILURE": 1,
+	}
+)
+
+func (x Status_Code) Enum() *Status_Code {
+	p := new(Status_Code)
+	*p = x
+	return p
+}
+
+func (x Status_Code) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (Status_Code) Descriptor() protoreflect.EnumDescriptor {
+	return file_ide_query_proto_enumTypes[0].Descriptor()
+}
+
+func (Status_Code) Type() protoreflect.EnumType {
+	return &file_ide_query_proto_enumTypes[0]
+}
+
+func (x Status_Code) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Deprecated: Use Status_Code.Descriptor instead.
+func (Status_Code) EnumDescriptor() ([]byte, []int) {
+	return file_ide_query_proto_rawDescGZIP(), []int{0, 0}
+}
+
+// Indicates the success/failure for analysis.
+type Status struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	Code Status_Code `protobuf:"varint,1,opt,name=code,proto3,enum=cider.build.companion.Status_Code" json:"code,omitempty"`
+	// Details about the status, might be displayed to user.
+	Message *string `protobuf:"bytes,2,opt,name=message,proto3,oneof" json:"message,omitempty"`
+}
+
+func (x *Status) Reset() {
+	*x = Status{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ide_query_proto_msgTypes[0]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *Status) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Status) ProtoMessage() {}
+
+func (x *Status) ProtoReflect() protoreflect.Message {
+	mi := &file_ide_query_proto_msgTypes[0]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use Status.ProtoReflect.Descriptor instead.
+func (*Status) Descriptor() ([]byte, []int) {
+	return file_ide_query_proto_rawDescGZIP(), []int{0}
+}
+
+func (x *Status) GetCode() Status_Code {
+	if x != nil {
+		return x.Code
+	}
+	return Status_OK
+}
+
+func (x *Status) GetMessage() string {
+	if x != nil && x.Message != nil {
+		return *x.Message
+	}
+	return ""
+}
+
+type GeneratedFile struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Path to the file relative to IdeAnalysis.build_artifact_root.
+	Path string `protobuf:"bytes,1,opt,name=path,proto3" json:"path,omitempty"`
+	//	The text of the generated file, if not provided contents will be read
+	//
+	// from the path above in user's workstation.
+	Contents []byte `protobuf:"bytes,2,opt,name=contents,proto3,oneof" json:"contents,omitempty"`
+}
+
+func (x *GeneratedFile) Reset() {
+	*x = GeneratedFile{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ide_query_proto_msgTypes[1]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *GeneratedFile) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*GeneratedFile) ProtoMessage() {}
+
+func (x *GeneratedFile) ProtoReflect() protoreflect.Message {
+	mi := &file_ide_query_proto_msgTypes[1]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use GeneratedFile.ProtoReflect.Descriptor instead.
+func (*GeneratedFile) Descriptor() ([]byte, []int) {
+	return file_ide_query_proto_rawDescGZIP(), []int{1}
+}
+
+func (x *GeneratedFile) GetPath() string {
+	if x != nil {
+		return x.Path
+	}
+	return ""
+}
+
+func (x *GeneratedFile) GetContents() []byte {
+	if x != nil {
+		return x.Contents
+	}
+	return nil
+}
+
+type SourceFile struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Repo root relative path to the source file in the tree.
+	Path string `protobuf:"bytes,1,opt,name=path,proto3" json:"path,omitempty"`
+	// Working directory used by the build system. All the relative
+	// paths in compiler_arguments should be relative to this path.
+	// Relative to workspace root.
+	WorkingDir string `protobuf:"bytes,2,opt,name=working_dir,json=workingDir,proto3" json:"working_dir,omitempty"`
+	// Compiler arguments to compile the source file. If multiple variants
+	// of the module being compiled are possible, the query script will choose
+	// one.
+	CompilerArguments []string `protobuf:"bytes,3,rep,name=compiler_arguments,json=compilerArguments,proto3" json:"compiler_arguments,omitempty"`
+	// Any generated files that are used in compiling the file.
+	Generated []*GeneratedFile `protobuf:"bytes,4,rep,name=generated,proto3" json:"generated,omitempty"`
+	// Paths to all of the sources, like build files, code generators,
+	// proto files etc. that were used  during analysis. Used to figure
+	// out when a set of build artifacts are stale and the query tool
+	// must be re-run.
+	// Relative to workspace root.
+	Deps []string `protobuf:"bytes,5,rep,name=deps,proto3" json:"deps,omitempty"`
+	// Represensts analysis status for this particular file. e.g. not part
+	// of the build graph.
+	Status *Status `protobuf:"bytes,6,opt,name=status,proto3,oneof" json:"status,omitempty"`
+}
+
+func (x *SourceFile) Reset() {
+	*x = SourceFile{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ide_query_proto_msgTypes[2]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *SourceFile) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*SourceFile) ProtoMessage() {}
+
+func (x *SourceFile) ProtoReflect() protoreflect.Message {
+	mi := &file_ide_query_proto_msgTypes[2]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use SourceFile.ProtoReflect.Descriptor instead.
+func (*SourceFile) Descriptor() ([]byte, []int) {
+	return file_ide_query_proto_rawDescGZIP(), []int{2}
+}
+
+func (x *SourceFile) GetPath() string {
+	if x != nil {
+		return x.Path
+	}
+	return ""
+}
+
+func (x *SourceFile) GetWorkingDir() string {
+	if x != nil {
+		return x.WorkingDir
+	}
+	return ""
+}
+
+func (x *SourceFile) GetCompilerArguments() []string {
+	if x != nil {
+		return x.CompilerArguments
+	}
+	return nil
+}
+
+func (x *SourceFile) GetGenerated() []*GeneratedFile {
+	if x != nil {
+		return x.Generated
+	}
+	return nil
+}
+
+func (x *SourceFile) GetDeps() []string {
+	if x != nil {
+		return x.Deps
+	}
+	return nil
+}
+
+func (x *SourceFile) GetStatus() *Status {
+	if x != nil {
+		return x.Status
+	}
+	return nil
+}
+
+type IdeAnalysis struct {
+	state         protoimpl.MessageState
+	sizeCache     protoimpl.SizeCache
+	unknownFields protoimpl.UnknownFields
+
+	// Path relative to workspace root, containing all the artifacts
+	// generated by the build system. GeneratedFile.path are always
+	// relative to this directory.
+	BuildArtifactRoot string        `protobuf:"bytes,1,opt,name=build_artifact_root,json=buildArtifactRoot,proto3" json:"build_artifact_root,omitempty"`
+	Sources           []*SourceFile `protobuf:"bytes,2,rep,name=sources,proto3" json:"sources,omitempty"`
+	// Status representing overall analysis.
+	// Should fail only when no analysis can be performed, e.g. workspace
+	// isn't setup.
+	Status *Status `protobuf:"bytes,3,opt,name=status,proto3,oneof" json:"status,omitempty"`
+}
+
+func (x *IdeAnalysis) Reset() {
+	*x = IdeAnalysis{}
+	if protoimpl.UnsafeEnabled {
+		mi := &file_ide_query_proto_msgTypes[3]
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		ms.StoreMessageInfo(mi)
+	}
+}
+
+func (x *IdeAnalysis) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*IdeAnalysis) ProtoMessage() {}
+
+func (x *IdeAnalysis) ProtoReflect() protoreflect.Message {
+	mi := &file_ide_query_proto_msgTypes[3]
+	if protoimpl.UnsafeEnabled && x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+// Deprecated: Use IdeAnalysis.ProtoReflect.Descriptor instead.
+func (*IdeAnalysis) Descriptor() ([]byte, []int) {
+	return file_ide_query_proto_rawDescGZIP(), []int{3}
+}
+
+func (x *IdeAnalysis) GetBuildArtifactRoot() string {
+	if x != nil {
+		return x.BuildArtifactRoot
+	}
+	return ""
+}
+
+func (x *IdeAnalysis) GetSources() []*SourceFile {
+	if x != nil {
+		return x.Sources
+	}
+	return nil
+}
+
+func (x *IdeAnalysis) GetStatus() *Status {
+	if x != nil {
+		return x.Status
+	}
+	return nil
+}
+
+var File_ide_query_proto protoreflect.FileDescriptor
+
+var file_ide_query_proto_rawDesc = []byte{
+	0x0a, 0x0f, 0x69, 0x64, 0x65, 0x5f, 0x71, 0x75, 0x65, 0x72, 0x79, 0x2e, 0x70, 0x72, 0x6f, 0x74,
+	0x6f, 0x12, 0x15, 0x63, 0x69, 0x64, 0x65, 0x72, 0x2e, 0x62, 0x75, 0x69, 0x6c, 0x64, 0x2e, 0x63,
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+	0x33,
+}
+
+var (
+	file_ide_query_proto_rawDescOnce sync.Once
+	file_ide_query_proto_rawDescData = file_ide_query_proto_rawDesc
+)
+
+func file_ide_query_proto_rawDescGZIP() []byte {
+	file_ide_query_proto_rawDescOnce.Do(func() {
+		file_ide_query_proto_rawDescData = protoimpl.X.CompressGZIP(file_ide_query_proto_rawDescData)
+	})
+	return file_ide_query_proto_rawDescData
+}
+
+var file_ide_query_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_ide_query_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
+var file_ide_query_proto_goTypes = []interface{}{
+	(Status_Code)(0),      // 0: cider.build.companion.Status.Code
+	(*Status)(nil),        // 1: cider.build.companion.Status
+	(*GeneratedFile)(nil), // 2: cider.build.companion.GeneratedFile
+	(*SourceFile)(nil),    // 3: cider.build.companion.SourceFile
+	(*IdeAnalysis)(nil),   // 4: cider.build.companion.IdeAnalysis
+}
+var file_ide_query_proto_depIdxs = []int32{
+	0, // 0: cider.build.companion.Status.code:type_name -> cider.build.companion.Status.Code
+	2, // 1: cider.build.companion.SourceFile.generated:type_name -> cider.build.companion.GeneratedFile
+	1, // 2: cider.build.companion.SourceFile.status:type_name -> cider.build.companion.Status
+	3, // 3: cider.build.companion.IdeAnalysis.sources:type_name -> cider.build.companion.SourceFile
+	1, // 4: cider.build.companion.IdeAnalysis.status:type_name -> cider.build.companion.Status
+	5, // [5:5] is the sub-list for method output_type
+	5, // [5:5] is the sub-list for method input_type
+	5, // [5:5] is the sub-list for extension type_name
+	5, // [5:5] is the sub-list for extension extendee
+	0, // [0:5] is the sub-list for field type_name
+}
+
+func init() { file_ide_query_proto_init() }
+func file_ide_query_proto_init() {
+	if File_ide_query_proto != nil {
+		return
+	}
+	if !protoimpl.UnsafeEnabled {
+		file_ide_query_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*Status); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_ide_query_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*GeneratedFile); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_ide_query_proto_msgTypes[2].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*SourceFile); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+		file_ide_query_proto_msgTypes[3].Exporter = func(v interface{}, i int) interface{} {
+			switch v := v.(*IdeAnalysis); i {
+			case 0:
+				return &v.state
+			case 1:
+				return &v.sizeCache
+			case 2:
+				return &v.unknownFields
+			default:
+				return nil
+			}
+		}
+	}
+	file_ide_query_proto_msgTypes[0].OneofWrappers = []interface{}{}
+	file_ide_query_proto_msgTypes[1].OneofWrappers = []interface{}{}
+	file_ide_query_proto_msgTypes[2].OneofWrappers = []interface{}{}
+	file_ide_query_proto_msgTypes[3].OneofWrappers = []interface{}{}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: file_ide_query_proto_rawDesc,
+			NumEnums:      1,
+			NumMessages:   4,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_ide_query_proto_goTypes,
+		DependencyIndexes: file_ide_query_proto_depIdxs,
+		EnumInfos:         file_ide_query_proto_enumTypes,
+		MessageInfos:      file_ide_query_proto_msgTypes,
+	}.Build()
+	File_ide_query_proto = out.File
+	file_ide_query_proto_rawDesc = nil
+	file_ide_query_proto_goTypes = nil
+	file_ide_query_proto_depIdxs = nil
+}
diff --git a/tools/ide_query/ide_query_proto/ide_query.proto b/tools/ide_query/ide_query_proto/ide_query.proto
new file mode 100644
index 0000000..63eea39
--- /dev/null
+++ b/tools/ide_query/ide_query_proto/ide_query.proto
@@ -0,0 +1,66 @@
+syntax = "proto3";
+
+package ide_query;
+option go_package = "ide_query/ide_query_proto";
+
+// Indicates the success/failure for analysis.
+message Status {
+  enum Code {
+    OK = 0;
+    FAILURE = 1;
+  }
+  Code code = 1;
+  // Details about the status, might be displayed to user.
+  optional string message = 2;
+}
+
+message GeneratedFile {
+  // Path to the file relative to IdeAnalysis.build_artifact_root.
+  string path = 1;
+
+  // The text of the generated file, if not provided contents will be read
+  // from the path above in user's workstation.
+  optional bytes contents = 2;
+}
+
+message SourceFile {
+  // Path to the source file relative to repository root.
+  string path = 1;
+
+  // Working directory used by the build system. All the relative
+  // paths in compiler_arguments should be relative to this path.
+  // Relative to repository root.
+  string working_dir = 2;
+
+  // Compiler arguments to compile the source file. If multiple variants
+  // of the module being compiled are possible, the query script will choose
+  // one.
+  repeated string compiler_arguments = 3;
+
+  // Any generated files that are used in compiling the file.
+  repeated GeneratedFile generated = 4;
+
+  // Paths to all of the sources, like build files, code generators,
+  // proto files etc. that were used during analysis. Used to figure
+  // out when a set of build artifacts are stale and the query tool
+  // must be re-run.
+  // Relative to repository root.
+  repeated string deps = 5;
+
+  // Represents analysis status for this particular file. e.g. not part
+  // of the build graph.
+  optional Status status = 6;
+}
+
+message IdeAnalysis {
+  // Path relative to repository root, containing all the artifacts
+  // generated by the build system. GeneratedFile.path are always
+  // relative to this directory.
+  string build_artifact_root = 1;
+
+  repeated SourceFile sources = 2;
+
+  // Status representing overall analysis.
+  // Should fail only when no analysis can be performed.
+  optional Status status = 3;
+}
diff --git a/tools/ide_query/ide_query_proto/regen.sh b/tools/ide_query/ide_query_proto/regen.sh
new file mode 100755
index 0000000..eec4f37
--- /dev/null
+++ b/tools/ide_query/ide_query_proto/regen.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+aprotoc --go_out=paths=source_relative:. ide_query.proto