diff --git a/fxicfg/loaders/protos.go b/fxicfg/loaders/protos.go
index fd0800e..84a4da8 100644
--- a/fxicfg/loaders/protos.go
+++ b/fxicfg/loaders/protos.go
@@ -5,22 +5,22 @@
 package loaders
 
 import (
+	// Import all protobuf libs to make sure proto file descriptors are registered and
+	// loadable. (registration happens in the proto pkg's init()).
 	_ "fuchsia.googlesource.com/infra/infra/fxicfg/starlark/protos/recipes"
 	luci "go.chromium.org/luci/starlark/interpreter"
 )
 
-var protos = map[string]string{
-	"recipes/example.proto": "recipes/example.proto",
-}
-
 // ProtoLoader returns a luci.Loader that loads protocol buffer modules.
 //
 // lucicfg has its own internal-only ProtoLoader constructor. We don't want to have to
 // send commits that project every time our recipe APIs change.
 func ProtoLoader() luci.Loader {
-	mapping := make(map[string]string, len(protos))
-	for path, proto := range protos {
-		mapping[path] = proto
-	}
-	return luci.ProtoLoader(mapping)
+	return luci.ProtoLoader(map[string]string{
+		// load("@proto//recipes/example.proto", example_pb="example"
+		"recipes/example.proto": "recipes/example.proto",
+
+		// load("@proto//recipes/fuchsia.proto", fuchsia_pb="recipe_modules.infra.fuchsia")
+		"recipes/fuchsia.proto": "recipes/fuchsia.proto",
+	})
 }
diff --git a/fxicfg/starlark/protos/gen.go b/fxicfg/starlark/protos/gen.go
index 209fa80..bdabb8a 100644
--- a/fxicfg/starlark/protos/gen.go
+++ b/fxicfg/starlark/protos/gen.go
@@ -7,3 +7,4 @@
 // TODO(kjharland): Force protos to come pre-generated and delete this.
 //
 //go:generate protoc --go_out=. recipes/example.proto
+//go:generate protoc --go_out=. recipes/fuchsia.proto
diff --git a/fxicfg/starlark/protos/recipes/example.pb.go b/fxicfg/starlark/protos/recipes/example.pb.go
index e165262..2cbb303 100644
--- a/fxicfg/starlark/protos/recipes/example.pb.go
+++ b/fxicfg/starlark/protos/recipes/example.pb.go
@@ -3,9 +3,11 @@
 
 package recipes
 
-import proto "github.com/golang/protobuf/proto"
-import fmt "fmt"
-import math "math"
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
 
 // Reference imports to suppress errors if they are not otherwise used.
 var _ = proto.Marshal
@@ -16,7 +18,7 @@
 // is compatible with the proto package it is being compiled against.
 // A compilation error at this line likely means your copy of the
 // proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion2 // please upgrade the proto package
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
 
 type Example struct {
 	FieldA               *Example_FieldA `protobuf:"bytes,1,opt,name=field_a,json=fieldA,proto3" json:"field_a,omitempty"`
@@ -31,14 +33,15 @@
 func (*Example) Descriptor() ([]byte, []int) {
 	return fileDescriptor_a131720fbcb681f7, []int{0}
 }
+
 func (m *Example) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Example.Unmarshal(m, b)
 }
 func (m *Example) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
 	return xxx_messageInfo_Example.Marshal(b, m, deterministic)
 }
-func (dst *Example) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Example.Merge(dst, src)
+func (m *Example) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Example.Merge(m, src)
 }
 func (m *Example) XXX_Size() int {
 	return xxx_messageInfo_Example.Size(m)
@@ -69,14 +72,15 @@
 func (*Example_FieldA) Descriptor() ([]byte, []int) {
 	return fileDescriptor_a131720fbcb681f7, []int{0, 0}
 }
+
 func (m *Example_FieldA) XXX_Unmarshal(b []byte) error {
 	return xxx_messageInfo_Example_FieldA.Unmarshal(m, b)
 }
 func (m *Example_FieldA) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
 	return xxx_messageInfo_Example_FieldA.Marshal(b, m, deterministic)
 }
-func (dst *Example_FieldA) XXX_Merge(src proto.Message) {
-	xxx_messageInfo_Example_FieldA.Merge(dst, src)
+func (m *Example_FieldA) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Example_FieldA.Merge(m, src)
 }
 func (m *Example_FieldA) XXX_Size() int {
 	return xxx_messageInfo_Example_FieldA.Size(m)
diff --git a/fxicfg/starlark/protos/recipes/fuchsia.pb.go b/fxicfg/starlark/protos/recipes/fuchsia.pb.go
new file mode 100644
index 0000000..d9150cd
--- /dev/null
+++ b/fxicfg/starlark/protos/recipes/fuchsia.pb.go
@@ -0,0 +1,544 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: recipes/fuchsia.proto
+
+// "from PB.recipe_modules.infra.fuchsia import Fuchsia"
+
+package recipes
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+// Fuchsia fully describes how to execute a Fuchsia CI/CQ task:
+//
+//  * How to fetch the Fuchsia sources.
+//  * How to build Fuchsia.
+//  * How to test Fuchsia.
+//  * How to archive and log outputs to various places.
+//
+// See the fuchsia.py recipe for full documentation on task execution.
+//
+// TODO(IN-1102):
+//
+// * Improve the docs of the fields in this message, since this is the User
+//   facing API for the recipe.
+// * Use Enums instead of strings where appropriate once we have starlark and
+//   support for human-readable constant values. Enums are just int literals in
+//   textprotos.
+type Fuchsia struct {
+	// (required) How to obtain the Fuchsia build inputs. See Checkout docs.
+	Checkout *Fuchsia_Checkout `protobuf:"bytes,1,opt,name=checkout,proto3" json:"checkout,omitempty"`
+	// (required) How to build Fuchsia. See Build docs.
+	Build *Fuchsia_Build `protobuf:"bytes,2,opt,name=build,proto3" json:"build,omitempty"`
+	// How to test Fuchsia. See Test docs.
+	Test *Fuchsia_Test `protobuf:"bytes,3,opt,name=test,proto3" json:"test,omitempty"`
+	// The GCS bucket to upload results to.
+	GcsBucket            string   `protobuf:"bytes,4,opt,name=gcs_bucket,json=gcsBucket,proto3" json:"gcs_bucket,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Fuchsia) Reset()         { *m = Fuchsia{} }
+func (m *Fuchsia) String() string { return proto.CompactTextString(m) }
+func (*Fuchsia) ProtoMessage()    {}
+func (*Fuchsia) Descriptor() ([]byte, []int) {
+	return fileDescriptor_eb93a9da76a97780, []int{0}
+}
+
+func (m *Fuchsia) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Fuchsia.Unmarshal(m, b)
+}
+func (m *Fuchsia) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Fuchsia.Marshal(b, m, deterministic)
+}
+func (m *Fuchsia) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Fuchsia.Merge(m, src)
+}
+func (m *Fuchsia) XXX_Size() int {
+	return xxx_messageInfo_Fuchsia.Size(m)
+}
+func (m *Fuchsia) XXX_DiscardUnknown() {
+	xxx_messageInfo_Fuchsia.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Fuchsia proto.InternalMessageInfo
+
+func (m *Fuchsia) GetCheckout() *Fuchsia_Checkout {
+	if m != nil {
+		return m.Checkout
+	}
+	return nil
+}
+
+func (m *Fuchsia) GetBuild() *Fuchsia_Build {
+	if m != nil {
+		return m.Build
+	}
+	return nil
+}
+
+func (m *Fuchsia) GetTest() *Fuchsia_Test {
+	if m != nil {
+		return m.Test
+	}
+	return nil
+}
+
+func (m *Fuchsia) GetGcsBucket() string {
+	if m != nil {
+		return m.GcsBucket
+	}
+	return ""
+}
+
+// Describes how to fetch the Fuchsia build inputs.
+type Fuchsia_Checkout struct {
+	// Jiri <package> atttribute values indicating additional packages to fetch
+	// from the input manifest. By default, packages with attribute tags are
+	// skipped unless one or more of the attribute values are specified here.
+	Attributes []string `protobuf:"bytes,1,rep,name=attributes,proto3" json:"attributes,omitempty"`
+	// Whether to checkout from a Jiri snapshot.
+	UseSnapshot bool `protobuf:"varint,2,opt,name=use_snapshot,json=useSnapshot,proto3" json:"use_snapshot,omitempty"`
+	// The name of the manifest to import from the integration repository.
+	Manifest string `protobuf:"bytes,4,opt,name=manifest,proto3" json:"manifest,omitempty"`
+	// Jiri remote manifest project,
+	//
+	// TODO(IN-1102): This should always be "integration" and is redundant
+	// because we can select the proper integration repo using the build input.
+	// Delete this in favor of a hard-coded constant since this value will only
+	// ever change if we completely restructure our CI/CD model or rename the
+	// integration repo, and thus this recipe.
+	Project string `protobuf:"bytes,6,opt,name=project,proto3" json:"project,omitempty"`
+	// The remote integration manifest repository.
+	Remote               string   `protobuf:"bytes,7,opt,name=remote,proto3" json:"remote,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Fuchsia_Checkout) Reset()         { *m = Fuchsia_Checkout{} }
+func (m *Fuchsia_Checkout) String() string { return proto.CompactTextString(m) }
+func (*Fuchsia_Checkout) ProtoMessage()    {}
+func (*Fuchsia_Checkout) Descriptor() ([]byte, []int) {
+	return fileDescriptor_eb93a9da76a97780, []int{0, 0}
+}
+
+func (m *Fuchsia_Checkout) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Fuchsia_Checkout.Unmarshal(m, b)
+}
+func (m *Fuchsia_Checkout) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Fuchsia_Checkout.Marshal(b, m, deterministic)
+}
+func (m *Fuchsia_Checkout) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Fuchsia_Checkout.Merge(m, src)
+}
+func (m *Fuchsia_Checkout) XXX_Size() int {
+	return xxx_messageInfo_Fuchsia_Checkout.Size(m)
+}
+func (m *Fuchsia_Checkout) XXX_DiscardUnknown() {
+	xxx_messageInfo_Fuchsia_Checkout.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Fuchsia_Checkout proto.InternalMessageInfo
+
+func (m *Fuchsia_Checkout) GetAttributes() []string {
+	if m != nil {
+		return m.Attributes
+	}
+	return nil
+}
+
+func (m *Fuchsia_Checkout) GetUseSnapshot() bool {
+	if m != nil {
+		return m.UseSnapshot
+	}
+	return false
+}
+
+func (m *Fuchsia_Checkout) GetManifest() string {
+	if m != nil {
+		return m.Manifest
+	}
+	return ""
+}
+
+func (m *Fuchsia_Checkout) GetProject() string {
+	if m != nil {
+		return m.Project
+	}
+	return ""
+}
+
+func (m *Fuchsia_Checkout) GetRemote() string {
+	if m != nil {
+		return m.Remote
+	}
+	return ""
+}
+
+// Describes how to build Fuchsia.
+type Fuchsia_Build struct {
+	// The build type
+	BuildType string `protobuf:"bytes,1,opt,name=build_type,json=buildType,proto3" json:"build_type,omitempty"`
+	// Board to build
+	Board string `protobuf:"bytes,2,opt,name=board,proto3" json:"board,omitempty"`
+	// GCS bucket for uploading debug symbols.
+	DebugSymbolBucket string `protobuf:"bytes,3,opt,name=debug_symbol_bucket,json=debugSymbolBucket,proto3" json:"debug_symbol_bucket,omitempty"`
+	// Tags of environments on which the testsharder will key
+	EnvironmentTags []string `protobuf:"bytes,4,rep,name=environment_tags,json=environmentTags,proto3" json:"environment_tags,omitempty"`
+	// Whether to exclude images during the build.
+	ExcludeImages bool `protobuf:"varint,5,opt,name=exclude_images,json=excludeImages,proto3" json:"exclude_images,omitempty"`
+	// Extra args to pass to GN.
+	GnArgs []string `protobuf:"bytes,6,rep,name=gn_args,json=gnArgs,proto3" json:"gn_args,omitempty"`
+	// Whether to generate and upload breakpad symbols as part of this build.
+	IncludeBreakpadSymbols bool `protobuf:"varint,7,opt,name=include_breakpad_symbols,json=includeBreakpadSymbols,proto3" json:"include_breakpad_symbols,omitempty"`
+	// Whether to build and upload an archive of debug binaries.
+	IncludeSymbolArchive bool `protobuf:"varint,8,opt,name=include_symbol_archive,json=includeSymbolArchive,proto3" json:"include_symbol_archive,omitempty"`
+	// Extra targets to pass to Ninja.
+	NinjaTargets []string `protobuf:"bytes,9,rep,name=ninja_targets,json=ninjaTargets,proto3" json:"ninja_targets,omitempty"`
+	// A list of Fuchsia packages to build.
+	Packages []string `protobuf:"bytes,10,rep,name=packages,proto3" json:"packages,omitempty"`
+	// The product to build.
+	Product string `protobuf:"bytes,11,opt,name=product,proto3" json:"product,omitempty"`
+	// Whether to run any tests.
+	RunTests bool `protobuf:"varint,12,opt,name=run_tests,json=runTests,proto3" json:"run_tests,omitempty"`
+	// The target architecture. One of x64 or arm64.
+	Target string `protobuf:"bytes,13,opt,name=target,proto3" json:"target,omitempty"`
+	// Packages to build and add to the universe set
+	UniversePackages []string `protobuf:"bytes,14,rep,name=universe_packages,json=universePackages,proto3" json:"universe_packages,omitempty"`
+	// --variant arguments to GN in `select_variant`
+	Variants []string `protobuf:"bytes,15,rep,name=variants,proto3" json:"variants,omitempty"`
+	// Additional args to pass to zircon build using standard FOO=bar syntax.
+	ZirconArgs           []string `protobuf:"bytes,16,rep,name=zircon_args,json=zirconArgs,proto3" json:"zircon_args,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Fuchsia_Build) Reset()         { *m = Fuchsia_Build{} }
+func (m *Fuchsia_Build) String() string { return proto.CompactTextString(m) }
+func (*Fuchsia_Build) ProtoMessage()    {}
+func (*Fuchsia_Build) Descriptor() ([]byte, []int) {
+	return fileDescriptor_eb93a9da76a97780, []int{0, 1}
+}
+
+func (m *Fuchsia_Build) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Fuchsia_Build.Unmarshal(m, b)
+}
+func (m *Fuchsia_Build) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Fuchsia_Build.Marshal(b, m, deterministic)
+}
+func (m *Fuchsia_Build) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Fuchsia_Build.Merge(m, src)
+}
+func (m *Fuchsia_Build) XXX_Size() int {
+	return xxx_messageInfo_Fuchsia_Build.Size(m)
+}
+func (m *Fuchsia_Build) XXX_DiscardUnknown() {
+	xxx_messageInfo_Fuchsia_Build.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Fuchsia_Build proto.InternalMessageInfo
+
+func (m *Fuchsia_Build) GetBuildType() string {
+	if m != nil {
+		return m.BuildType
+	}
+	return ""
+}
+
+func (m *Fuchsia_Build) GetBoard() string {
+	if m != nil {
+		return m.Board
+	}
+	return ""
+}
+
+func (m *Fuchsia_Build) GetDebugSymbolBucket() string {
+	if m != nil {
+		return m.DebugSymbolBucket
+	}
+	return ""
+}
+
+func (m *Fuchsia_Build) GetEnvironmentTags() []string {
+	if m != nil {
+		return m.EnvironmentTags
+	}
+	return nil
+}
+
+func (m *Fuchsia_Build) GetExcludeImages() bool {
+	if m != nil {
+		return m.ExcludeImages
+	}
+	return false
+}
+
+func (m *Fuchsia_Build) GetGnArgs() []string {
+	if m != nil {
+		return m.GnArgs
+	}
+	return nil
+}
+
+func (m *Fuchsia_Build) GetIncludeBreakpadSymbols() bool {
+	if m != nil {
+		return m.IncludeBreakpadSymbols
+	}
+	return false
+}
+
+func (m *Fuchsia_Build) GetIncludeSymbolArchive() bool {
+	if m != nil {
+		return m.IncludeSymbolArchive
+	}
+	return false
+}
+
+func (m *Fuchsia_Build) GetNinjaTargets() []string {
+	if m != nil {
+		return m.NinjaTargets
+	}
+	return nil
+}
+
+func (m *Fuchsia_Build) GetPackages() []string {
+	if m != nil {
+		return m.Packages
+	}
+	return nil
+}
+
+func (m *Fuchsia_Build) GetProduct() string {
+	if m != nil {
+		return m.Product
+	}
+	return ""
+}
+
+func (m *Fuchsia_Build) GetRunTests() bool {
+	if m != nil {
+		return m.RunTests
+	}
+	return false
+}
+
+func (m *Fuchsia_Build) GetTarget() string {
+	if m != nil {
+		return m.Target
+	}
+	return ""
+}
+
+func (m *Fuchsia_Build) GetUniversePackages() []string {
+	if m != nil {
+		return m.UniversePackages
+	}
+	return nil
+}
+
+func (m *Fuchsia_Build) GetVariants() []string {
+	if m != nil {
+		return m.Variants
+	}
+	return nil
+}
+
+func (m *Fuchsia_Build) GetZirconArgs() []string {
+	if m != nil {
+		return m.ZirconArgs
+	}
+	return nil
+}
+
+// Describes how to test Fuchsia.
+type Fuchsia_Test struct {
+	// The type of device to execute tests on, if the value is
+	// ot QEMU it will be passed to Swarming as the device_type
+	// dimension.
+	DeviceType string `protobuf:"bytes,1,opt,name=device_type,json=deviceType,proto3" json:"device_type,omitempty"`
+	// Whether to pave images the device for testing. (Ignored if
+	// device_type == QEMU)
+	Pave bool `protobuf:"varint,2,opt,name=pave,proto3" json:"pave,omitempty"`
+	// Swarming pool from which a test task will be drawn
+	Pool string `protobuf:"bytes,3,opt,name=pool,proto3" json:"pool,omitempty"`
+	// Shell-quoted string to add to the runtests commandline
+	RuntestsArgs string `protobuf:"bytes,4,opt,name=runtests_args,json=runtestsArgs,proto3" json:"runtests_args,omitempty"`
+	// Whether any plaintext needs to be supplied to the tests
+	RequiresSecrets bool `protobuf:"varint,5,opt,name=requires_secrets,json=requiresSecrets,proto3" json:"requires_secrets,omitempty"`
+	// How long to wait for Swarming to find a bot on which to test
+	SwarmingExpirationTimeoutSecs int32 `protobuf:"varint,6,opt,name=swarming_expiration_timeout_secs,json=swarmingExpirationTimeoutSecs,proto3" json:"swarming_expiration_timeout_secs,omitempty"`
+	// How long to wait (in seconds) before killing the test
+	// swarming task if there\'s no output being produced
+	SwarmingIoTimeoutSecs int32 `protobuf:"varint,7,opt,name=swarming_io_timeout_secs,json=swarmingIoTimeoutSecs,proto3" json:"swarming_io_timeout_secs,omitempty"`
+	// Whether to run tests as shards.
+	TestInShards bool `protobuf:"varint,8,opt,name=test_in_shards,json=testInShards,proto3" json:"test_in_shards,omitempty"`
+	// How long to wait until timing out on tests.
+	TimeoutSecs          int32    `protobuf:"varint,9,opt,name=timeout_secs,json=timeoutSecs,proto3" json:"timeout_secs,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *Fuchsia_Test) Reset()         { *m = Fuchsia_Test{} }
+func (m *Fuchsia_Test) String() string { return proto.CompactTextString(m) }
+func (*Fuchsia_Test) ProtoMessage()    {}
+func (*Fuchsia_Test) Descriptor() ([]byte, []int) {
+	return fileDescriptor_eb93a9da76a97780, []int{0, 2}
+}
+
+func (m *Fuchsia_Test) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_Fuchsia_Test.Unmarshal(m, b)
+}
+func (m *Fuchsia_Test) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_Fuchsia_Test.Marshal(b, m, deterministic)
+}
+func (m *Fuchsia_Test) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_Fuchsia_Test.Merge(m, src)
+}
+func (m *Fuchsia_Test) XXX_Size() int {
+	return xxx_messageInfo_Fuchsia_Test.Size(m)
+}
+func (m *Fuchsia_Test) XXX_DiscardUnknown() {
+	xxx_messageInfo_Fuchsia_Test.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_Fuchsia_Test proto.InternalMessageInfo
+
+func (m *Fuchsia_Test) GetDeviceType() string {
+	if m != nil {
+		return m.DeviceType
+	}
+	return ""
+}
+
+func (m *Fuchsia_Test) GetPave() bool {
+	if m != nil {
+		return m.Pave
+	}
+	return false
+}
+
+func (m *Fuchsia_Test) GetPool() string {
+	if m != nil {
+		return m.Pool
+	}
+	return ""
+}
+
+func (m *Fuchsia_Test) GetRuntestsArgs() string {
+	if m != nil {
+		return m.RuntestsArgs
+	}
+	return ""
+}
+
+func (m *Fuchsia_Test) GetRequiresSecrets() bool {
+	if m != nil {
+		return m.RequiresSecrets
+	}
+	return false
+}
+
+func (m *Fuchsia_Test) GetSwarmingExpirationTimeoutSecs() int32 {
+	if m != nil {
+		return m.SwarmingExpirationTimeoutSecs
+	}
+	return 0
+}
+
+func (m *Fuchsia_Test) GetSwarmingIoTimeoutSecs() int32 {
+	if m != nil {
+		return m.SwarmingIoTimeoutSecs
+	}
+	return 0
+}
+
+func (m *Fuchsia_Test) GetTestInShards() bool {
+	if m != nil {
+		return m.TestInShards
+	}
+	return false
+}
+
+func (m *Fuchsia_Test) GetTimeoutSecs() int32 {
+	if m != nil {
+		return m.TimeoutSecs
+	}
+	return 0
+}
+
+func init() {
+	proto.RegisterType((*Fuchsia)(nil), "recipe_modules.infra.fuchsia.Fuchsia")
+	proto.RegisterType((*Fuchsia_Checkout)(nil), "recipe_modules.infra.fuchsia.Fuchsia.Checkout")
+	proto.RegisterType((*Fuchsia_Build)(nil), "recipe_modules.infra.fuchsia.Fuchsia.Build")
+	proto.RegisterType((*Fuchsia_Test)(nil), "recipe_modules.infra.fuchsia.Fuchsia.Test")
+}
+
+func init() { proto.RegisterFile("recipes/fuchsia.proto", fileDescriptor_eb93a9da76a97780) }
+
+var fileDescriptor_eb93a9da76a97780 = []byte{
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diff --git a/fxicfg/starlark/protos/recipes/fuchsia.proto b/fxicfg/starlark/protos/recipes/fuchsia.proto
new file mode 100644
index 0000000..a6ac4ff
--- /dev/null
+++ b/fxicfg/starlark/protos/recipes/fuchsia.proto
@@ -0,0 +1,151 @@
+// Copyright 2019 The Fuchsia Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+syntax = "proto3";
+
+// "from PB.recipe_modules.infra.fuchsia import Fuchsia"
+package recipe_modules.infra.fuchsia;
+
+option go_package = "recipes";
+
+// Fuchsia fully describes how to execute a Fuchsia CI/CQ task:
+//
+//  * How to fetch the Fuchsia sources.
+//  * How to build Fuchsia.
+//  * How to test Fuchsia.
+//  * How to archive and log outputs to various places.
+//
+// See the fuchsia.py recipe for full documentation on task execution.
+//
+// TODO(IN-1102):
+//
+// * Improve the docs of the fields in this message, since this is the User
+//   facing API for the recipe.
+// * Use Enums instead of strings where appropriate once we have starlark and
+//   support for human-readable constant values. Enums are just int literals in
+//   textprotos.
+message Fuchsia {
+  // (required) How to obtain the Fuchsia build inputs. See Checkout docs.
+  Checkout checkout = 1;
+
+  // (required) How to build Fuchsia. See Build docs.
+  Build build = 2;
+
+  // How to test Fuchsia. See Test docs.
+  Test test = 3;
+
+  // The GCS bucket to upload results to.
+  string gcs_bucket = 4;
+
+  // Describes how to fetch the Fuchsia build inputs.
+  message Checkout {
+    // Jiri <package> atttribute values indicating additional packages to fetch
+    // from the input manifest. By default, packages with attribute tags are
+    // skipped unless one or more of the attribute values are specified here.
+    repeated string attributes = 1;
+
+    // Whether to checkout from a Jiri snapshot.
+    bool use_snapshot = 2;
+
+    // The name of the manifest to import from the integration repository.
+    string manifest = 4;
+
+    // Jiri remote manifest project,
+    //
+    // TODO(IN-1102): This should always be "integration" and is redundant
+    // because we can select the proper integration repo using the build input.
+    // Delete this in favor of a hard-coded constant since this value will only
+    // ever change if we completely restructure our CI/CD model or rename the
+    // integration repo, and thus this recipe.
+    string project = 6;
+
+    // The remote integration manifest repository.
+    string remote = 7;
+  }
+
+  // Describes how to build Fuchsia.
+  message Build {
+    // The build type
+    string build_type = 1;
+
+    // Board to build
+    string board = 2;
+
+    // GCS bucket for uploading debug symbols.
+    string debug_symbol_bucket = 3;
+
+    // Tags of environments on which the testsharder will key
+    repeated string environment_tags = 4;
+
+    // Whether to exclude images during the build.
+    bool exclude_images = 5;
+
+    // Extra args to pass to GN.
+    repeated string gn_args = 6;
+
+    // Whether to generate and upload breakpad symbols as part of this build.
+    bool include_breakpad_symbols = 7;
+
+    // Whether to build and upload an archive of debug binaries.
+    bool include_symbol_archive = 8;
+
+    // Extra targets to pass to Ninja.
+    repeated string ninja_targets = 9;
+
+    // A list of Fuchsia packages to build.
+    repeated string packages = 10;
+
+    // The product to build.
+    string product = 11;
+
+    // Whether to run any tests.
+    bool run_tests = 12;
+
+    // The target architecture. One of x64 or arm64.
+    string target = 13;
+
+    // Packages to build and add to the universe set
+    repeated string universe_packages = 14;
+
+    // --variant arguments to GN in `select_variant`
+    repeated string variants = 15;
+
+    // Additional args to pass to zircon build using standard FOO=bar syntax.
+    repeated string zircon_args = 16;
+  }
+
+  // Describes how to test Fuchsia.
+  message Test {
+    // The type of device to execute tests on, if the value is
+    // ot QEMU it will be passed to Swarming as the device_type
+    // dimension.
+    string device_type = 1;
+
+    // Whether to pave images the device for testing. (Ignored if
+    // device_type == QEMU)
+    bool pave = 2;
+
+    // Swarming pool from which a test task will be drawn
+    string pool = 3;
+
+    // Shell-quoted string to add to the runtests commandline
+    string runtests_args = 4;
+
+    // Whether any plaintext needs to be supplied to the tests
+    bool requires_secrets = 5;
+
+    // How long to wait for Swarming to find a bot on which to test
+    int32 swarming_expiration_timeout_secs = 6;
+
+    // How long to wait (in seconds) before killing the test
+    // swarming task if there\'s no output being produced
+    int32 swarming_io_timeout_secs = 7;
+
+    // Whether to run tests as shards.
+    bool test_in_shards = 8;
+
+    // How long to wait until timing out on tests.
+    int32 timeout_secs = 9;
+  }
+}