diff --git a/docs/plugin-protocol/tfplugin5.0.proto b/docs/plugin-protocol/tfplugin5.0.proto
new file mode 100644
index 000000000..cf6dda34a
--- /dev/null
+++ b/docs/plugin-protocol/tfplugin5.0.proto
@@ -0,0 +1,353 @@
+// Terraform Plugin RPC protocol version 5.0
+//
+// This file defines version 5.0 of the RPC protocol. To implement a plugin
+// against this protocol, copy this definition into your own codebase and
+// use protoc to generate stubs for your target language.
+//
+// This file will be updated in-place in the source Terraform repository for
+// any minor versions of protocol 5, but later minor versions will always be
+// backwards compatible. Breaking changes, if any are required, will come
+// in a subsequent major version with its own separate proto definition.
+//
+// Note that only the proto files included in a release tag of Terraform are
+// official protocol releases. Proto files taken from other commits may include
+// incomplete changes or features that did not make it into a final release.
+// In all reasonable cases, plugin developers should take the proto file from
+// the tag of the most recent release of Terraform, and not from the master
+// branch or any other development branch.
+//
+syntax = "proto3";
+
+package tfplugin5;
+
+// DynamicValue is an opaque encoding of terraform data, with the field name
+// indicating the encoding scheme used.
+message DynamicValue {
+    bytes msgpack = 1;
+    bytes json = 2;
+}
+
+message Diagnostic {
+    enum Severity {
+        INVALID = 0;
+        ERROR = 1;
+        WARNING = 2;
+    }
+    Severity severity = 1;
+    string summary = 2;
+    string detail = 3;
+    AttributePath attribute = 4;
+}
+
+message AttributePath {
+    message Step {
+        oneof selector {
+            // Set "attribute_name" to represent looking up an attribute
+            // in the current object value.
+            string attribute_name = 1;
+            // Set "element_key_*" to represent looking up an element in
+            // an indexable collection type.
+            string element_key_string = 2;
+            int64 element_key_int = 3;
+        }
+    }
+    repeated Step steps = 1;
+}
+
+message Stop {
+    message Request {
+    }
+    message Response {
+		string Error = 1;
+    }
+}
+
+// RawState holds the stored state for a resource to be upgraded by the
+// provider. It can be in one of two formats, the current json encoded format
+// in bytes, or the legacy flatmap format as a map of strings.
+message RawState {
+    bytes json = 1;
+    map<string, string> flatmap = 2;
+}
+
+// Schema is the configuration schema for a Resource, Provider, or Provisioner.
+message Schema {
+    message Block {
+        int64 version = 1;
+        repeated Attribute attributes = 2;
+        repeated NestedBlock block_types = 3;
+    }
+
+    message Attribute {
+        string name = 1;
+        bytes type = 2;
+        string description = 3;
+        bool required = 4;
+        bool optional = 5;
+        bool computed = 6;
+        bool sensitive = 7;
+    }
+
+    message NestedBlock {
+        enum NestingMode {
+            INVALID = 0;
+            SINGLE = 1;
+            LIST = 2;
+            SET = 3;
+            MAP = 4;
+            GROUP = 5;
+        }
+
+        string type_name = 1;
+        Block block = 2;
+        NestingMode nesting = 3;
+        int64 min_items = 4;
+        int64 max_items = 5;
+    }
+
+    // The version of the schema.
+    // Schemas are versioned, so that providers can upgrade a saved resource
+    // state when the schema is changed. 
+    int64 version = 1;
+
+    // Block is the top level configuration block for this schema.
+    Block block = 2;
+}
+
+service Provider {
+    //////// Information about what a provider supports/expects
+    rpc GetSchema(GetProviderSchema.Request) returns (GetProviderSchema.Response);
+    rpc PrepareProviderConfig(PrepareProviderConfig.Request) returns (PrepareProviderConfig.Response);
+    rpc ValidateResourceTypeConfig(ValidateResourceTypeConfig.Request) returns (ValidateResourceTypeConfig.Response);
+    rpc ValidateDataSourceConfig(ValidateDataSourceConfig.Request) returns (ValidateDataSourceConfig.Response);
+    rpc UpgradeResourceState(UpgradeResourceState.Request) returns (UpgradeResourceState.Response);
+
+    //////// One-time initialization, called before other functions below
+    rpc Configure(Configure.Request) returns (Configure.Response);
+
+    //////// Managed Resource Lifecycle
+    rpc ReadResource(ReadResource.Request) returns (ReadResource.Response);
+    rpc PlanResourceChange(PlanResourceChange.Request) returns (PlanResourceChange.Response);
+    rpc ApplyResourceChange(ApplyResourceChange.Request) returns (ApplyResourceChange.Response);
+    rpc ImportResourceState(ImportResourceState.Request) returns (ImportResourceState.Response);
+
+    rpc ReadDataSource(ReadDataSource.Request) returns (ReadDataSource.Response);
+
+    //////// Graceful Shutdown
+    rpc Stop(Stop.Request) returns (Stop.Response);
+}
+
+message GetProviderSchema {
+    message Request {
+    }
+    message Response {
+        Schema provider = 1;
+        map<string, Schema> resource_schemas = 2;
+        map<string, Schema> data_source_schemas = 3;
+        repeated Diagnostic diagnostics = 4;
+    }
+}
+
+message PrepareProviderConfig {
+    message Request {
+        DynamicValue config = 1;
+    }
+    message Response {
+        DynamicValue prepared_config = 1;
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+message UpgradeResourceState {
+    message Request {
+        string type_name = 1;
+
+        // version is the schema_version number recorded in the state file
+        int64 version = 2;
+
+        // raw_state is the raw states as stored for the resource.  Core does
+        // not have access to the schema of prior_version, so it's the
+        // provider's responsibility to interpret this value using the
+        // appropriate older schema. The raw_state will be the json encoded
+        // state, or a legacy flat-mapped format.
+        RawState raw_state = 3;
+    }
+    message Response {
+        // new_state is a msgpack-encoded data structure that, when interpreted with
+        // the _current_ schema for this resource type, is functionally equivalent to
+        // that which was given in prior_state_raw.
+        DynamicValue upgraded_state = 1;
+
+        // diagnostics describes any errors encountered during migration that could not
+        // be safely resolved, and warnings about any possibly-risky assumptions made
+        // in the upgrade process.
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+message ValidateResourceTypeConfig {
+    message Request {
+        string type_name = 1;
+        DynamicValue config = 2;
+    }
+    message Response {
+        repeated Diagnostic diagnostics = 1;
+    }
+}
+
+message ValidateDataSourceConfig {
+    message Request {
+        string type_name = 1;
+        DynamicValue config = 2;
+    }
+    message Response {
+        repeated Diagnostic diagnostics = 1;
+    }
+}
+
+message Configure {
+    message Request {
+        string terraform_version = 1;
+        DynamicValue config = 2;
+    }
+    message Response {
+        repeated Diagnostic diagnostics = 1;
+    }
+}
+
+message ReadResource {
+    message Request {
+        string type_name = 1;
+        DynamicValue current_state = 2;
+        bytes private = 3;
+    }
+    message Response {
+        DynamicValue new_state = 1;
+        repeated Diagnostic diagnostics = 2;
+        bytes private = 3;
+    }
+}
+
+message PlanResourceChange {
+    message Request {
+        string type_name = 1;
+        DynamicValue prior_state = 2;
+        DynamicValue proposed_new_state = 3;
+        DynamicValue config = 4;
+        bytes prior_private = 5; 
+    }
+
+    message Response {
+        DynamicValue planned_state = 1;
+        repeated AttributePath requires_replace = 2;
+        bytes planned_private = 3; 
+        repeated Diagnostic diagnostics = 4;
+
+
+        // This may be set only by the helper/schema "SDK" in the main Terraform
+        // repository, to request that Terraform Core >=0.12 permit additional
+        // inconsistencies that can result from the legacy SDK type system
+        // and its imprecise mapping to the >=0.12 type system.
+        // The change in behavior implied by this flag makes sense only for the
+        // specific details of the legacy SDK type system, and are not a general
+        // mechanism to avoid proper type handling in providers.
+        //
+        //     ====              DO NOT USE THIS              ====
+        //     ==== THIS MUST BE LEFT UNSET IN ALL OTHER SDKS ====
+        //     ====              DO NOT USE THIS              ====
+        bool legacy_type_system = 5;
+    }
+}
+
+message ApplyResourceChange {
+    message Request {
+        string type_name = 1;
+        DynamicValue prior_state = 2;
+        DynamicValue planned_state = 3;
+        DynamicValue config = 4;
+        bytes planned_private = 5; 
+    }
+    message Response {
+        DynamicValue new_state = 1;
+        bytes private = 2; 
+        repeated Diagnostic diagnostics = 3;
+
+        // This may be set only by the helper/schema "SDK" in the main Terraform
+        // repository, to request that Terraform Core >=0.12 permit additional
+        // inconsistencies that can result from the legacy SDK type system
+        // and its imprecise mapping to the >=0.12 type system.
+        // The change in behavior implied by this flag makes sense only for the
+        // specific details of the legacy SDK type system, and are not a general
+        // mechanism to avoid proper type handling in providers.
+        //
+        //     ====              DO NOT USE THIS              ====
+        //     ==== THIS MUST BE LEFT UNSET IN ALL OTHER SDKS ====
+        //     ====              DO NOT USE THIS              ====
+        bool legacy_type_system = 4;
+    }
+}
+
+message ImportResourceState {
+    message Request {
+        string type_name = 1;
+        string id = 2;
+    }
+
+    message ImportedResource {
+        string type_name = 1;
+        DynamicValue state = 2;
+        bytes private = 3;
+    }
+
+    message Response {
+        repeated ImportedResource imported_resources = 1;
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+message ReadDataSource {
+    message Request {
+        string type_name = 1;
+        DynamicValue config = 2;
+    }
+    message Response {
+        DynamicValue state = 1;
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+service Provisioner {
+    rpc GetSchema(GetProvisionerSchema.Request) returns (GetProvisionerSchema.Response);
+    rpc ValidateProvisionerConfig(ValidateProvisionerConfig.Request) returns (ValidateProvisionerConfig.Response);
+    rpc ProvisionResource(ProvisionResource.Request) returns (stream ProvisionResource.Response);
+    rpc Stop(Stop.Request) returns (Stop.Response);
+}
+
+message GetProvisionerSchema {
+    message Request {
+    }
+    message Response {
+        Schema provisioner = 1;
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+message ValidateProvisionerConfig {
+    message Request {
+        DynamicValue config = 1;
+    }
+    message Response {
+        repeated Diagnostic diagnostics = 1;
+    }
+}
+
+message ProvisionResource {
+    message Request {
+        DynamicValue config = 1;
+        DynamicValue connection = 2;
+    }
+    message Response {
+        string output  = 1;
+        repeated Diagnostic diagnostics = 2;
+    }   
+}
diff --git a/docs/plugin-protocol/tfplugin5.1.proto b/docs/plugin-protocol/tfplugin5.1.proto
new file mode 100644
index 000000000..9875d9ba6
--- /dev/null
+++ b/docs/plugin-protocol/tfplugin5.1.proto
@@ -0,0 +1,353 @@
+// Terraform Plugin RPC protocol version 5.1
+//
+// This file defines version 5.1 of the RPC protocol. To implement a plugin
+// against this protocol, copy this definition into your own codebase and
+// use protoc to generate stubs for your target language.
+//
+// This file will be updated in-place in the source Terraform repository for
+// any minor versions of protocol 5, but later minor versions will always be
+// backwards compatible. Breaking changes, if any are required, will come
+// in a subsequent major version with its own separate proto definition.
+//
+// Note that only the proto files included in a release tag of Terraform are
+// official protocol releases. Proto files taken from other commits may include
+// incomplete changes or features that did not make it into a final release.
+// In all reasonable cases, plugin developers should take the proto file from
+// the tag of the most recent release of Terraform, and not from the master
+// branch or any other development branch.
+//
+syntax = "proto3";
+
+package tfplugin5;
+
+// DynamicValue is an opaque encoding of terraform data, with the field name
+// indicating the encoding scheme used.
+message DynamicValue {
+    bytes msgpack = 1;
+    bytes json = 2;
+}
+
+message Diagnostic {
+    enum Severity {
+        INVALID = 0;
+        ERROR = 1;
+        WARNING = 2;
+    }
+    Severity severity = 1;
+    string summary = 2;
+    string detail = 3;
+    AttributePath attribute = 4;
+}
+
+message AttributePath {
+    message Step {
+        oneof selector {
+            // Set "attribute_name" to represent looking up an attribute
+            // in the current object value.
+            string attribute_name = 1;
+            // Set "element_key_*" to represent looking up an element in
+            // an indexable collection type.
+            string element_key_string = 2;
+            int64 element_key_int = 3;
+        }
+    }
+    repeated Step steps = 1;
+}
+
+message Stop {
+    message Request {
+    }
+    message Response {
+		string Error = 1;
+    }
+}
+
+// RawState holds the stored state for a resource to be upgraded by the
+// provider. It can be in one of two formats, the current json encoded format
+// in bytes, or the legacy flatmap format as a map of strings.
+message RawState {
+    bytes json = 1;
+    map<string, string> flatmap = 2;
+}
+
+// Schema is the configuration schema for a Resource, Provider, or Provisioner.
+message Schema {
+    message Block {
+        int64 version = 1;
+        repeated Attribute attributes = 2;
+        repeated NestedBlock block_types = 3;
+    }
+
+    message Attribute {
+        string name = 1;
+        bytes type = 2;
+        string description = 3;
+        bool required = 4;
+        bool optional = 5;
+        bool computed = 6;
+        bool sensitive = 7;
+    }
+
+    message NestedBlock {
+        enum NestingMode {
+            INVALID = 0;
+            SINGLE = 1;
+            LIST = 2;
+            SET = 3;
+            MAP = 4;
+            GROUP = 5;
+        }
+
+        string type_name = 1;
+        Block block = 2;
+        NestingMode nesting = 3;
+        int64 min_items = 4;
+        int64 max_items = 5;
+    }
+
+    // The version of the schema.
+    // Schemas are versioned, so that providers can upgrade a saved resource
+    // state when the schema is changed. 
+    int64 version = 1;
+
+    // Block is the top level configuration block for this schema.
+    Block block = 2;
+}
+
+service Provider {
+    //////// Information about what a provider supports/expects
+    rpc GetSchema(GetProviderSchema.Request) returns (GetProviderSchema.Response);
+    rpc PrepareProviderConfig(PrepareProviderConfig.Request) returns (PrepareProviderConfig.Response);
+    rpc ValidateResourceTypeConfig(ValidateResourceTypeConfig.Request) returns (ValidateResourceTypeConfig.Response);
+    rpc ValidateDataSourceConfig(ValidateDataSourceConfig.Request) returns (ValidateDataSourceConfig.Response);
+    rpc UpgradeResourceState(UpgradeResourceState.Request) returns (UpgradeResourceState.Response);
+
+    //////// One-time initialization, called before other functions below
+    rpc Configure(Configure.Request) returns (Configure.Response);
+
+    //////// Managed Resource Lifecycle
+    rpc ReadResource(ReadResource.Request) returns (ReadResource.Response);
+    rpc PlanResourceChange(PlanResourceChange.Request) returns (PlanResourceChange.Response);
+    rpc ApplyResourceChange(ApplyResourceChange.Request) returns (ApplyResourceChange.Response);
+    rpc ImportResourceState(ImportResourceState.Request) returns (ImportResourceState.Response);
+
+    rpc ReadDataSource(ReadDataSource.Request) returns (ReadDataSource.Response);
+
+    //////// Graceful Shutdown
+    rpc Stop(Stop.Request) returns (Stop.Response);
+}
+
+message GetProviderSchema {
+    message Request {
+    }
+    message Response {
+        Schema provider = 1;
+        map<string, Schema> resource_schemas = 2;
+        map<string, Schema> data_source_schemas = 3;
+        repeated Diagnostic diagnostics = 4;
+    }
+}
+
+message PrepareProviderConfig {
+    message Request {
+        DynamicValue config = 1;
+    }
+    message Response {
+        DynamicValue prepared_config = 1;
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+message UpgradeResourceState {
+    message Request {
+        string type_name = 1;
+
+        // version is the schema_version number recorded in the state file
+        int64 version = 2;
+
+        // raw_state is the raw states as stored for the resource.  Core does
+        // not have access to the schema of prior_version, so it's the
+        // provider's responsibility to interpret this value using the
+        // appropriate older schema. The raw_state will be the json encoded
+        // state, or a legacy flat-mapped format.
+        RawState raw_state = 3;
+    }
+    message Response {
+        // new_state is a msgpack-encoded data structure that, when interpreted with
+        // the _current_ schema for this resource type, is functionally equivalent to
+        // that which was given in prior_state_raw.
+        DynamicValue upgraded_state = 1;
+
+        // diagnostics describes any errors encountered during migration that could not
+        // be safely resolved, and warnings about any possibly-risky assumptions made
+        // in the upgrade process.
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+message ValidateResourceTypeConfig {
+    message Request {
+        string type_name = 1;
+        DynamicValue config = 2;
+    }
+    message Response {
+        repeated Diagnostic diagnostics = 1;
+    }
+}
+
+message ValidateDataSourceConfig {
+    message Request {
+        string type_name = 1;
+        DynamicValue config = 2;
+    }
+    message Response {
+        repeated Diagnostic diagnostics = 1;
+    }
+}
+
+message Configure {
+    message Request {
+        string terraform_version = 1;
+        DynamicValue config = 2;
+    }
+    message Response {
+        repeated Diagnostic diagnostics = 1;
+    }
+}
+
+message ReadResource {
+    message Request {
+        string type_name = 1;
+        DynamicValue current_state = 2;
+        bytes private = 3;
+    }
+    message Response {
+        DynamicValue new_state = 1;
+        repeated Diagnostic diagnostics = 2;
+        bytes private = 3;
+    }
+}
+
+message PlanResourceChange {
+    message Request {
+        string type_name = 1;
+        DynamicValue prior_state = 2;
+        DynamicValue proposed_new_state = 3;
+        DynamicValue config = 4;
+        bytes prior_private = 5; 
+    }
+
+    message Response {
+        DynamicValue planned_state = 1;
+        repeated AttributePath requires_replace = 2;
+        bytes planned_private = 3; 
+        repeated Diagnostic diagnostics = 4;
+
+
+        // This may be set only by the helper/schema "SDK" in the main Terraform
+        // repository, to request that Terraform Core >=0.12 permit additional
+        // inconsistencies that can result from the legacy SDK type system
+        // and its imprecise mapping to the >=0.12 type system.
+        // The change in behavior implied by this flag makes sense only for the
+        // specific details of the legacy SDK type system, and are not a general
+        // mechanism to avoid proper type handling in providers.
+        //
+        //     ====              DO NOT USE THIS              ====
+        //     ==== THIS MUST BE LEFT UNSET IN ALL OTHER SDKS ====
+        //     ====              DO NOT USE THIS              ====
+        bool legacy_type_system = 5;
+    }
+}
+
+message ApplyResourceChange {
+    message Request {
+        string type_name = 1;
+        DynamicValue prior_state = 2;
+        DynamicValue planned_state = 3;
+        DynamicValue config = 4;
+        bytes planned_private = 5; 
+    }
+    message Response {
+        DynamicValue new_state = 1;
+        bytes private = 2; 
+        repeated Diagnostic diagnostics = 3;
+
+        // This may be set only by the helper/schema "SDK" in the main Terraform
+        // repository, to request that Terraform Core >=0.12 permit additional
+        // inconsistencies that can result from the legacy SDK type system
+        // and its imprecise mapping to the >=0.12 type system.
+        // The change in behavior implied by this flag makes sense only for the
+        // specific details of the legacy SDK type system, and are not a general
+        // mechanism to avoid proper type handling in providers.
+        //
+        //     ====              DO NOT USE THIS              ====
+        //     ==== THIS MUST BE LEFT UNSET IN ALL OTHER SDKS ====
+        //     ====              DO NOT USE THIS              ====
+        bool legacy_type_system = 4;
+    }
+}
+
+message ImportResourceState {
+    message Request {
+        string type_name = 1;
+        string id = 2;
+    }
+
+    message ImportedResource {
+        string type_name = 1;
+        DynamicValue state = 2;
+        bytes private = 3;
+    }
+
+    message Response {
+        repeated ImportedResource imported_resources = 1;
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+message ReadDataSource {
+    message Request {
+        string type_name = 1;
+        DynamicValue config = 2;
+    }
+    message Response {
+        DynamicValue state = 1;
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+service Provisioner {
+    rpc GetSchema(GetProvisionerSchema.Request) returns (GetProvisionerSchema.Response);
+    rpc ValidateProvisionerConfig(ValidateProvisionerConfig.Request) returns (ValidateProvisionerConfig.Response);
+    rpc ProvisionResource(ProvisionResource.Request) returns (stream ProvisionResource.Response);
+    rpc Stop(Stop.Request) returns (Stop.Response);
+}
+
+message GetProvisionerSchema {
+    message Request {
+    }
+    message Response {
+        Schema provisioner = 1;
+        repeated Diagnostic diagnostics = 2;
+    }
+}
+
+message ValidateProvisionerConfig {
+    message Request {
+        DynamicValue config = 1;
+    }
+    message Response {
+        repeated Diagnostic diagnostics = 1;
+    }
+}
+
+message ProvisionResource {
+    message Request {
+        DynamicValue config = 1;
+        DynamicValue connection = 2;
+    }
+    message Response {
+        string output  = 1;
+        repeated Diagnostic diagnostics = 2;
+    }   
+}
diff --git a/internal/tfplugin5/tfplugin5.proto b/internal/tfplugin5/tfplugin5.proto
deleted file mode 100644
index 9875d9ba6..000000000
--- a/internal/tfplugin5/tfplugin5.proto
+++ /dev/null
@@ -1,353 +0,0 @@
-// Terraform Plugin RPC protocol version 5.1
-//
-// This file defines version 5.1 of the RPC protocol. To implement a plugin
-// against this protocol, copy this definition into your own codebase and
-// use protoc to generate stubs for your target language.
-//
-// This file will be updated in-place in the source Terraform repository for
-// any minor versions of protocol 5, but later minor versions will always be
-// backwards compatible. Breaking changes, if any are required, will come
-// in a subsequent major version with its own separate proto definition.
-//
-// Note that only the proto files included in a release tag of Terraform are
-// official protocol releases. Proto files taken from other commits may include
-// incomplete changes or features that did not make it into a final release.
-// In all reasonable cases, plugin developers should take the proto file from
-// the tag of the most recent release of Terraform, and not from the master
-// branch or any other development branch.
-//
-syntax = "proto3";
-
-package tfplugin5;
-
-// DynamicValue is an opaque encoding of terraform data, with the field name
-// indicating the encoding scheme used.
-message DynamicValue {
-    bytes msgpack = 1;
-    bytes json = 2;
-}
-
-message Diagnostic {
-    enum Severity {
-        INVALID = 0;
-        ERROR = 1;
-        WARNING = 2;
-    }
-    Severity severity = 1;
-    string summary = 2;
-    string detail = 3;
-    AttributePath attribute = 4;
-}
-
-message AttributePath {
-    message Step {
-        oneof selector {
-            // Set "attribute_name" to represent looking up an attribute
-            // in the current object value.
-            string attribute_name = 1;
-            // Set "element_key_*" to represent looking up an element in
-            // an indexable collection type.
-            string element_key_string = 2;
-            int64 element_key_int = 3;
-        }
-    }
-    repeated Step steps = 1;
-}
-
-message Stop {
-    message Request {
-    }
-    message Response {
-		string Error = 1;
-    }
-}
-
-// RawState holds the stored state for a resource to be upgraded by the
-// provider. It can be in one of two formats, the current json encoded format
-// in bytes, or the legacy flatmap format as a map of strings.
-message RawState {
-    bytes json = 1;
-    map<string, string> flatmap = 2;
-}
-
-// Schema is the configuration schema for a Resource, Provider, or Provisioner.
-message Schema {
-    message Block {
-        int64 version = 1;
-        repeated Attribute attributes = 2;
-        repeated NestedBlock block_types = 3;
-    }
-
-    message Attribute {
-        string name = 1;
-        bytes type = 2;
-        string description = 3;
-        bool required = 4;
-        bool optional = 5;
-        bool computed = 6;
-        bool sensitive = 7;
-    }
-
-    message NestedBlock {
-        enum NestingMode {
-            INVALID = 0;
-            SINGLE = 1;
-            LIST = 2;
-            SET = 3;
-            MAP = 4;
-            GROUP = 5;
-        }
-
-        string type_name = 1;
-        Block block = 2;
-        NestingMode nesting = 3;
-        int64 min_items = 4;
-        int64 max_items = 5;
-    }
-
-    // The version of the schema.
-    // Schemas are versioned, so that providers can upgrade a saved resource
-    // state when the schema is changed. 
-    int64 version = 1;
-
-    // Block is the top level configuration block for this schema.
-    Block block = 2;
-}
-
-service Provider {
-    //////// Information about what a provider supports/expects
-    rpc GetSchema(GetProviderSchema.Request) returns (GetProviderSchema.Response);
-    rpc PrepareProviderConfig(PrepareProviderConfig.Request) returns (PrepareProviderConfig.Response);
-    rpc ValidateResourceTypeConfig(ValidateResourceTypeConfig.Request) returns (ValidateResourceTypeConfig.Response);
-    rpc ValidateDataSourceConfig(ValidateDataSourceConfig.Request) returns (ValidateDataSourceConfig.Response);
-    rpc UpgradeResourceState(UpgradeResourceState.Request) returns (UpgradeResourceState.Response);
-
-    //////// One-time initialization, called before other functions below
-    rpc Configure(Configure.Request) returns (Configure.Response);
-
-    //////// Managed Resource Lifecycle
-    rpc ReadResource(ReadResource.Request) returns (ReadResource.Response);
-    rpc PlanResourceChange(PlanResourceChange.Request) returns (PlanResourceChange.Response);
-    rpc ApplyResourceChange(ApplyResourceChange.Request) returns (ApplyResourceChange.Response);
-    rpc ImportResourceState(ImportResourceState.Request) returns (ImportResourceState.Response);
-
-    rpc ReadDataSource(ReadDataSource.Request) returns (ReadDataSource.Response);
-
-    //////// Graceful Shutdown
-    rpc Stop(Stop.Request) returns (Stop.Response);
-}
-
-message GetProviderSchema {
-    message Request {
-    }
-    message Response {
-        Schema provider = 1;
-        map<string, Schema> resource_schemas = 2;
-        map<string, Schema> data_source_schemas = 3;
-        repeated Diagnostic diagnostics = 4;
-    }
-}
-
-message PrepareProviderConfig {
-    message Request {
-        DynamicValue config = 1;
-    }
-    message Response {
-        DynamicValue prepared_config = 1;
-        repeated Diagnostic diagnostics = 2;
-    }
-}
-
-message UpgradeResourceState {
-    message Request {
-        string type_name = 1;
-
-        // version is the schema_version number recorded in the state file
-        int64 version = 2;
-
-        // raw_state is the raw states as stored for the resource.  Core does
-        // not have access to the schema of prior_version, so it's the
-        // provider's responsibility to interpret this value using the
-        // appropriate older schema. The raw_state will be the json encoded
-        // state, or a legacy flat-mapped format.
-        RawState raw_state = 3;
-    }
-    message Response {
-        // new_state is a msgpack-encoded data structure that, when interpreted with
-        // the _current_ schema for this resource type, is functionally equivalent to
-        // that which was given in prior_state_raw.
-        DynamicValue upgraded_state = 1;
-
-        // diagnostics describes any errors encountered during migration that could not
-        // be safely resolved, and warnings about any possibly-risky assumptions made
-        // in the upgrade process.
-        repeated Diagnostic diagnostics = 2;
-    }
-}
-
-message ValidateResourceTypeConfig {
-    message Request {
-        string type_name = 1;
-        DynamicValue config = 2;
-    }
-    message Response {
-        repeated Diagnostic diagnostics = 1;
-    }
-}
-
-message ValidateDataSourceConfig {
-    message Request {
-        string type_name = 1;
-        DynamicValue config = 2;
-    }
-    message Response {
-        repeated Diagnostic diagnostics = 1;
-    }
-}
-
-message Configure {
-    message Request {
-        string terraform_version = 1;
-        DynamicValue config = 2;
-    }
-    message Response {
-        repeated Diagnostic diagnostics = 1;
-    }
-}
-
-message ReadResource {
-    message Request {
-        string type_name = 1;
-        DynamicValue current_state = 2;
-        bytes private = 3;
-    }
-    message Response {
-        DynamicValue new_state = 1;
-        repeated Diagnostic diagnostics = 2;
-        bytes private = 3;
-    }
-}
-
-message PlanResourceChange {
-    message Request {
-        string type_name = 1;
-        DynamicValue prior_state = 2;
-        DynamicValue proposed_new_state = 3;
-        DynamicValue config = 4;
-        bytes prior_private = 5; 
-    }
-
-    message Response {
-        DynamicValue planned_state = 1;
-        repeated AttributePath requires_replace = 2;
-        bytes planned_private = 3; 
-        repeated Diagnostic diagnostics = 4;
-
-
-        // This may be set only by the helper/schema "SDK" in the main Terraform
-        // repository, to request that Terraform Core >=0.12 permit additional
-        // inconsistencies that can result from the legacy SDK type system
-        // and its imprecise mapping to the >=0.12 type system.
-        // The change in behavior implied by this flag makes sense only for the
-        // specific details of the legacy SDK type system, and are not a general
-        // mechanism to avoid proper type handling in providers.
-        //
-        //     ====              DO NOT USE THIS              ====
-        //     ==== THIS MUST BE LEFT UNSET IN ALL OTHER SDKS ====
-        //     ====              DO NOT USE THIS              ====
-        bool legacy_type_system = 5;
-    }
-}
-
-message ApplyResourceChange {
-    message Request {
-        string type_name = 1;
-        DynamicValue prior_state = 2;
-        DynamicValue planned_state = 3;
-        DynamicValue config = 4;
-        bytes planned_private = 5; 
-    }
-    message Response {
-        DynamicValue new_state = 1;
-        bytes private = 2; 
-        repeated Diagnostic diagnostics = 3;
-
-        // This may be set only by the helper/schema "SDK" in the main Terraform
-        // repository, to request that Terraform Core >=0.12 permit additional
-        // inconsistencies that can result from the legacy SDK type system
-        // and its imprecise mapping to the >=0.12 type system.
-        // The change in behavior implied by this flag makes sense only for the
-        // specific details of the legacy SDK type system, and are not a general
-        // mechanism to avoid proper type handling in providers.
-        //
-        //     ====              DO NOT USE THIS              ====
-        //     ==== THIS MUST BE LEFT UNSET IN ALL OTHER SDKS ====
-        //     ====              DO NOT USE THIS              ====
-        bool legacy_type_system = 4;
-    }
-}
-
-message ImportResourceState {
-    message Request {
-        string type_name = 1;
-        string id = 2;
-    }
-
-    message ImportedResource {
-        string type_name = 1;
-        DynamicValue state = 2;
-        bytes private = 3;
-    }
-
-    message Response {
-        repeated ImportedResource imported_resources = 1;
-        repeated Diagnostic diagnostics = 2;
-    }
-}
-
-message ReadDataSource {
-    message Request {
-        string type_name = 1;
-        DynamicValue config = 2;
-    }
-    message Response {
-        DynamicValue state = 1;
-        repeated Diagnostic diagnostics = 2;
-    }
-}
-
-service Provisioner {
-    rpc GetSchema(GetProvisionerSchema.Request) returns (GetProvisionerSchema.Response);
-    rpc ValidateProvisionerConfig(ValidateProvisionerConfig.Request) returns (ValidateProvisionerConfig.Response);
-    rpc ProvisionResource(ProvisionResource.Request) returns (stream ProvisionResource.Response);
-    rpc Stop(Stop.Request) returns (Stop.Response);
-}
-
-message GetProvisionerSchema {
-    message Request {
-    }
-    message Response {
-        Schema provisioner = 1;
-        repeated Diagnostic diagnostics = 2;
-    }
-}
-
-message ValidateProvisionerConfig {
-    message Request {
-        DynamicValue config = 1;
-    }
-    message Response {
-        repeated Diagnostic diagnostics = 1;
-    }
-}
-
-message ProvisionResource {
-    message Request {
-        DynamicValue config = 1;
-        DynamicValue connection = 2;
-    }
-    message Response {
-        string output  = 1;
-        repeated Diagnostic diagnostics = 2;
-    }   
-}
diff --git a/internal/tfplugin5/tfplugin5.proto b/internal/tfplugin5/tfplugin5.proto
new file mode 120000
index 000000000..0837e1d4a
--- /dev/null
+++ b/internal/tfplugin5/tfplugin5.proto
@@ -0,0 +1 @@
+../../docs/plugin-protocol/tfplugin5.1.proto
\ No newline at end of file