diff --git a/go/project_mgmt/project.pb.go b/go/project_mgmt/project.pb.go
index 87e3680..979903b 100644
--- a/go/project_mgmt/project.pb.go
+++ b/go/project_mgmt/project.pb.go
@@ -114,10 +114,60 @@
 	return ""
 }
 
+// Information about the project's HWID file in the chromeos-hwid repo.
+type HWIDInfo struct {
+	// A key in the project.yaml metadata file, to look up the branch, path, etc.
+	// For example, to match the entry in the project.yaml file:
+	//
+	// MILKYWAY:
+	//   board: GALAXY
+	//   branch: master
+	//   version: 3
+	//   path: v3/MILKYWAY
+	//
+	// project_key should be 'MILKYWAY'. The matching is case-insensitive.
+	ProjectKey           string   `protobuf:"bytes,1,opt,name=project_key,json=projectKey,proto3" json:"project_key,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *HWIDInfo) Reset()         { *m = HWIDInfo{} }
+func (m *HWIDInfo) String() string { return proto.CompactTextString(m) }
+func (*HWIDInfo) ProtoMessage()    {}
+func (*HWIDInfo) Descriptor() ([]byte, []int) {
+	return fileDescriptor_18d734e2ff24bda5, []int{2}
+}
+
+func (m *HWIDInfo) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_HWIDInfo.Unmarshal(m, b)
+}
+func (m *HWIDInfo) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_HWIDInfo.Marshal(b, m, deterministic)
+}
+func (m *HWIDInfo) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_HWIDInfo.Merge(m, src)
+}
+func (m *HWIDInfo) XXX_Size() int {
+	return xxx_messageInfo_HWIDInfo.Size(m)
+}
+func (m *HWIDInfo) XXX_DiscardUnknown() {
+	xxx_messageInfo_HWIDInfo.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_HWIDInfo proto.InternalMessageInfo
+
+func (m *HWIDInfo) GetProjectKey() string {
+	if m != nil {
+		return m.ProjectKey
+	}
+	return ""
+}
+
 // Defines the metadata for a project, which ultimately controls how this
 // project is managed throughout the infrastructure.
 //
-// NEXT ID: 8
+// NEXT ID: 9
 type Project struct {
 	// Defines the human-readable name for the project.
 	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
@@ -134,17 +184,18 @@
 	// Define the project's local_manifest.
 	LocalManifest *LocalManifest `protobuf:"bytes,6,opt,name=local_manifest,json=localManifest,proto3" json:"local_manifest,omitempty"`
 	// The Google Storage bucket for artifacts from the project's builds.
-	GsBucket             string   `protobuf:"bytes,7,opt,name=gs_bucket,json=gsBucket,proto3" json:"gs_bucket,omitempty"`
-	XXX_NoUnkeyedLiteral struct{} `json:"-"`
-	XXX_unrecognized     []byte   `json:"-"`
-	XXX_sizecache        int32    `json:"-"`
+	GsBucket             string    `protobuf:"bytes,7,opt,name=gs_bucket,json=gsBucket,proto3" json:"gs_bucket,omitempty"`
+	HwidInfo             *HWIDInfo `protobuf:"bytes,8,opt,name=hwid_info,json=hwidInfo,proto3" json:"hwid_info,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}  `json:"-"`
+	XXX_unrecognized     []byte    `json:"-"`
+	XXX_sizecache        int32     `json:"-"`
 }
 
 func (m *Project) Reset()         { *m = Project{} }
 func (m *Project) String() string { return proto.CompactTextString(m) }
 func (*Project) ProtoMessage()    {}
 func (*Project) Descriptor() ([]byte, []int) {
-	return fileDescriptor_18d734e2ff24bda5, []int{2}
+	return fileDescriptor_18d734e2ff24bda5, []int{3}
 }
 
 func (m *Project) XXX_Unmarshal(b []byte) error {
@@ -214,6 +265,13 @@
 	return ""
 }
 
+func (m *Project) GetHwidInfo() *HWIDInfo {
+	if m != nil {
+		return m.HwidInfo
+	}
+	return nil
+}
+
 type ProjectList struct {
 	Value                []*Project `protobuf:"bytes,1,rep,name=value,proto3" json:"value,omitempty"`
 	XXX_NoUnkeyedLiteral struct{}   `json:"-"`
@@ -225,7 +283,7 @@
 func (m *ProjectList) String() string { return proto.CompactTextString(m) }
 func (*ProjectList) ProtoMessage()    {}
 func (*ProjectList) Descriptor() ([]byte, []int) {
-	return fileDescriptor_18d734e2ff24bda5, []int{3}
+	return fileDescriptor_18d734e2ff24bda5, []int{4}
 }
 
 func (m *ProjectList) XXX_Unmarshal(b []byte) error {
@@ -256,6 +314,7 @@
 func init() {
 	proto.RegisterType((*BuildbucketAcls)(nil), "project_mgmt.BuildbucketAcls")
 	proto.RegisterType((*LocalManifest)(nil), "project_mgmt.LocalManifest")
+	proto.RegisterType((*HWIDInfo)(nil), "project_mgmt.HWIDInfo")
 	proto.RegisterType((*Project)(nil), "project_mgmt.Project")
 	proto.RegisterType((*ProjectList)(nil), "project_mgmt.ProjectList")
 }
@@ -263,28 +322,31 @@
 func init() { proto.RegisterFile("project_mgmt/project.proto", fileDescriptor_18d734e2ff24bda5) }
 
 var fileDescriptor_18d734e2ff24bda5 = []byte{
-	// 362 bytes of a gzipped FileDescriptorProto
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-	0x18, 0xc6, 0x31, 0xff, 0xf3, 0x9a, 0x6c, 0xc2, 0x2c, 0x0b, 0xee, 0x86, 0x65, 0x83, 0x7b, 0x09,
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-	0x4d, 0x2c, 0x2a, 0xb1, 0x4a, 0x9d, 0x9e, 0xf6, 0x67, 0x67, 0x71, 0x8f, 0x55, 0xea, 0x7e, 0xf6,
-	0x60, 0xbc, 0x6f, 0xb6, 0x44, 0x08, 0x06, 0x05, 0xce, 0xa9, 0xe9, 0xd1, 0xe7, 0x5a, 0xab, 0xfb,
-	0xcc, 0xb3, 0xfa, 0x8c, 0xfe, 0x81, 0x4d, 0x78, 0x71, 0xcc, 0x92, 0xa6, 0xb6, 0xaf, 0x2d, 0x68,
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-	0x59, 0x07, 0xe8, 0x0a, 0xa6, 0x89, 0x8c, 0x9a, 0x52, 0x67, 0xac, 0x57, 0x9e, 0x24, 0x32, 0xd0,
-	0xb3, 0x7b, 0x0f, 0xb6, 0x81, 0xb5, 0xcb, 0xa4, 0x42, 0x57, 0x30, 0xfc, 0xc0, 0xac, 0xa2, 0xfa,
-	0x83, 0xd9, 0xdb, 0x5f, 0xdd, 0x6b, 0x4c, 0x32, 0x6c, 0x32, 0xc1, 0xdd, 0xdb, 0x6d, 0xc2, 0x3d,
-	0x92, 0x0a, 0x9e, 0x67, 0x55, 0xee, 0x71, 0x91, 0xf8, 0xe7, 0x81, 0x4b, 0x3f, 0x2b, 0x8e, 0x02,
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-	0xff, 0xff, 0x2b, 0x7e, 0xe3, 0x1c, 0x6b, 0x02, 0x00, 0x00,
+	// 411 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x5c, 0x92, 0x5f, 0x6b, 0xd5, 0x30,
+	0x18, 0xc6, 0xe9, 0xfe, 0x9d, 0xf6, 0xed, 0x8e, 0x1b, 0x11, 0xa5, 0x3a, 0xc4, 0x43, 0xbd, 0x39,
+	0x30, 0x69, 0x61, 0x03, 0x11, 0xef, 0xac, 0x5e, 0x6c, 0x38, 0x71, 0x14, 0x44, 0xf0, 0xa6, 0xa4,
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+	0x71, 0x6a, 0x1f, 0x66, 0x5a, 0x8b, 0x74, 0x5e, 0x54, 0x9e, 0x58, 0xf9, 0xfa, 0x5f, 0x00, 0x00,
+	0x00, 0xff, 0xff, 0x8e, 0xe9, 0x25, 0x62, 0xcd, 0x02, 0x00, 0x00,
 }
diff --git a/src/project_mgmt/project.proto b/src/project_mgmt/project.proto
index 200662a..bf4c5fd 100644
--- a/src/project_mgmt/project.proto
+++ b/src/project_mgmt/project.proto
@@ -25,10 +25,25 @@
   string manifest_path = 2;
 }
 
+// Information about the project's HWID file in the chromeos-hwid repo.
+message HWIDInfo {
+  // A key in the project.yaml metadata file, to look up the branch, path, etc.
+  // For example, to match the entry in the project.yaml file:
+  //
+  // MILKYWAY:
+  //   board: GALAXY
+  //   branch: master
+  //   version: 3
+  //   path: v3/MILKYWAY
+  //
+  // project_key should be 'MILKYWAY'. The matching is case-insensitive.
+  string project_key = 1;
+}
+
 // Defines the metadata for a project, which ultimately controls how this
 // project is managed throughout the infrastructure.
 //
-// NEXT ID: 8
+// NEXT ID: 9
 message Project {
   // Defines the human-readable name for the project.
   string name = 1;
@@ -46,6 +61,8 @@
   LocalManifest local_manifest = 6;
   // The Google Storage bucket for artifacts from the project's builds.
   string gs_bucket = 7;
+
+  HWIDInfo hwid_info = 8;
 }
 
 message ProjectList {