diff --git a/.gitignore b/.gitignore
index 6036ee6..1001142 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,3 +14,6 @@ docs/.jekyll-metadata
 .ruby-version
 
 /.tmp/
+
+# asdf
+.tool-versions
diff --git a/README.md b/README.md
index 6c16170..c675018 100644
--- a/README.md
+++ b/README.md
@@ -1,12 +1,14 @@
 # Google API Linter
 
 [![ci](https://github.com/aep-dev/api-linter/actions/workflows/ci.yaml/badge.svg)](https://github.com/aep-dev/api-linter/actions/workflows/ci.yaml)
-![latest release](https://img.shields.io/github/v/release/googleapis/api-linter)
-![go version](https://img.shields.io/github/go-mod/go-version/googleapis/api-linter)
+![latest release](https://img.shields.io/github/v/release/aep-dev/api-linter)
+![go version](https://img.shields.io/github/go-mod/go-version/aep-dev/api-linter)
 
-The API linter provides real-time checks for compliance with many of Google's
-API standards, documented using [API Improvement Proposals][]. It operates on
-API surfaces defined in [protocol buffers][].
+The API linter provides real-time checks for compliance with many of the API
+standards, documented using [API Enhancement Proposals][]. It operates on API
+surfaces defined in [protocol buffers][]. For APIs defined in 
+[OpenAPI specification][] an equivalent [OpenAPI specification linter][] is
+available.
 
 It identifies common mistakes and inconsistencies in API surfaces:
 
@@ -20,11 +22,11 @@ message GetBookRequest {
 
 When able, it also offers a suggestion for the correct fix.
 
-[_Read more ≫_](https://linter.aip.dev/)
+[_Read more ≫_](docs/index.md)
 
 ## Versioning
 
-The Google API linter does **not** follow semantic versioning. Semantic
+The AEP API linter does **not** follow semantic versioning. Semantic
 versioning is challenging for a tool like a linter because the addition or
 correction of virtually any rule is "breaking" (in the sense that a file that
 previously reported no problems may now do so).
@@ -45,7 +47,7 @@ being useful.
 
 ## Contributing
 
-If you are interested in contributing to the API linter, please review the [contributing guide](https://linter.aip.dev/contributing) to learn more.
+If you are interested in contributing to the API linter, please review the [contributing guide](https://aep.dev/contributing/) to learn more.
 
 ## License
 
@@ -54,4 +56,5 @@ This software is made available under the [Apache 2.0][] license.
 [apache 2.0]: https://www.apache.org/licenses/LICENSE-2.0
 [api improvement proposals]: https://aip.dev/
 [protocol buffers]: https://developers.google.com/protocol-buffers
-[rule documentation]: ./rules/index.md
+[OpenAPI specification]: https://www.openapis.org/
+[OpenAPI specification linter]: https://github.com/aep-dev/aep-openapi-linter
diff --git a/docs/index.md b/docs/index.md
index 6ecd968..9e829f9 100644
--- a/docs/index.md
+++ b/docs/index.md
@@ -1,15 +1,17 @@
 ---
 ---
 
-# Google API Linter
+# AEP API Linter
 
 ![ci](https://github.com/aep-dev/api-linter/workflows/ci/badge.svg)
 ![latest release](https://img.shields.io/github/v/release/googleapis/api-linter)
 ![go version](https://img.shields.io/github/go-mod/go-version/googleapis/api-linter)
 
-The API linter provides real-time checks for compliance with many of Google's
-API standards, documented using [API Improvement Proposals][]. It operates on
-API surfaces defined in [protocol buffers][].
+The API linter provides real-time checks for compliance with many of the API
+standards, documented using [API Enhancement Proposals][]. It operates on API
+surfaces defined in [protocol buffers][]. For APIs defined in
+[OpenAPI specification][] an equivalent [OpenAPI specification linter][] is
+available.
 
 It identifies common mistakes and inconsistencies in API surfaces:
 
@@ -43,9 +45,6 @@ It will install `api-linter` into your local Go binary directory
 `$HOME/go/bin`. Ensure that your operating system's `PATH` contains the Go
 binary directory.
 
-**Note:** For working in Google-internal source control, you should use the
-released binary `/google/bin/releases/api-linter/api-linter`.
-
 ## Usage
 
 ```sh
@@ -80,12 +79,51 @@ Usage of api-linter:
       --version                         Print version and exit.
 ```
 
+### Usage with Buf
+
+[Buf][] builds tooling to make schema-driven, Protobuf-based API development
+reliable and user-friendly for service producers and consumers.
+This includes the `buf lint` command, which can be used to lint Protobuf files.
+The API linter can be used as a plugin for `buf lint`.
+
+To install the plugin, run:
+
+```sh
+go install github.com/aep-dev/api-linter/cmd/buf-plugin-aep@latest
+```
+
+It will install `buf-plugin-aep` into your local Go binary directory
+`$HOME/go/bin`. Ensure that your operating system's `PATH` contains the Go
+binary directory.
+
+Then, integrate the following into your `buf.yaml` file:
+
+```yaml
+lint:
+  use:
+    - AEP
+plugins:
+  - plugin: buf-plugin-aep
+```
+
+Now, you can run `buf lint` to lint your Protobuf files against the AEP rules.
+
+An example of building and linting with Buf can be found in the
+[example](./example) directory.
+
+More information on using Buf to lint Protobuf files can be found in the
+[Buf lint documentation][].
+
 ## License
 
 This software is made available under the [Apache 2.0][] license.
 
 [apache 2.0]: https://www.apache.org/licenses/LICENSE-2.0
-[api improvement proposals]: https://aep.dev/
+[API Enhancement Proposals]: https://aep.dev/
 [configuration]: ./configuration.md
 [protocol buffers]: https://developers.google.com/protocol-buffers
 [rule documentation]: ./rules/index.md
+[OpenAPI specification]: https://www.openapis.org/
+[OpenAPI specification linter]: https://github.com/aep-dev/aep-openapi-linter
+[Buf]: https://buf.build/
+[Buf lint documentation]: https://buf.build/docs/lint/overview/
diff --git a/example/.gitignore b/example/.gitignore
new file mode 100644
index 0000000..01715ea
--- /dev/null
+++ b/example/.gitignore
@@ -0,0 +1,5 @@
+# Buf
+buf.lock
+
+# Generated code
+gen/
diff --git a/example/buf.gen.yaml b/example/buf.gen.yaml
new file mode 100644
index 0000000..f9fd366
--- /dev/null
+++ b/example/buf.gen.yaml
@@ -0,0 +1,11 @@
+version: v2
+managed:
+  enabled: true
+plugins:
+  - remote: buf.build/grpc/java:v1.69.0
+    out: gen
+  # dependencies
+  - remote: buf.build/protocolbuffers/java:v29.1
+    out: gen
+inputs:
+  - directory: proto
diff --git a/example/buf.yaml b/example/buf.yaml
new file mode 100644
index 0000000..e3d4cd7
--- /dev/null
+++ b/example/buf.yaml
@@ -0,0 +1,12 @@
+# For details on buf.yaml configuration, visit https://buf.build/docs/configuration/v2/buf-yaml
+version: v2
+modules:
+  - path: proto
+deps:
+  - buf.build/googleapis/googleapis
+lint:
+  use:
+    - AEP
+plugins:
+  - plugin: buf-plugin-aep
+
diff --git a/example/proto/example/bookstore/v1/example.proto b/example/proto/example/bookstore/v1/example.proto
new file mode 100644
index 0000000..cf4ec07
--- /dev/null
+++ b/example/proto/example/bookstore/v1/example.proto
@@ -0,0 +1,547 @@
+syntax = "proto3";
+
+package example.bookstore.v1;
+
+import "google/api/annotations.proto";
+
+import "google/api/client.proto";
+
+import "google/api/field_behavior.proto";
+
+import "google/api/resource.proto";
+
+import "google/protobuf/empty.proto";
+
+import "google/protobuf/field_mask.proto";
+
+option go_package = "/bookstore";
+
+// A service.
+service Bookstore {
+  // An aep-compliant Create method for book.
+  rpc CreateBook ( CreateBookRequest ) returns ( Book ) {
+    option (google.api.http) = {
+      post: "/{parent=publishers/*}/books",
+      body: "book"
+    };
+
+    option (google.api.method_signature) = "parent,book";
+  }
+
+  // An aep-compliant Get method for book.
+  rpc GetBook ( GetBookRequest ) returns ( Book ) {
+    option (google.api.http) = { get: "/{path=publishers/*/books/*}" };
+
+    option (google.api.method_signature) = "path";
+  }
+
+  // An aep-compliant Update method for book.
+  rpc UpdateBook ( UpdateBookRequest ) returns ( Book ) {
+    option (google.api.http) = {
+      patch: "/{path=publishers/*/books/*}",
+      body: "book"
+    };
+
+    option (google.api.method_signature) = "book,update_mask";
+  }
+
+  // An aep-compliant Delete method for book.
+  rpc DeleteBook ( DeleteBookRequest ) returns ( google.protobuf.Empty ) {
+    option (google.api.http) = { delete: "/{path=publishers/*/books/*}" };
+
+    option (google.api.method_signature) = "path";
+  }
+
+  // An aep-compliant List method for books.
+  rpc ListBooks ( ListBooksRequest ) returns ( ListBooksResponse ) {
+    option (google.api.http) = { get: "/{parent=publishers/*}/books" };
+
+    option (google.api.method_signature) = "parent";
+  }
+
+  // An aep-compliant Apply method for books.
+  rpc ApplyBook ( ApplyBookRequest ) returns ( Book ) {
+    option (google.api.http) = {
+      put: "/{path=publishers/*/books/*}",
+      body: "book"
+    };
+  }
+
+  // An aep-compliant Create method for book-edition.
+  rpc CreateBookEdition ( CreateBookEditionRequest ) returns ( BookEdition ) {
+    option (google.api.http) = {
+      post: "/{parent=publishers/*/books/*}/editions",
+      body: "book_edition"
+    };
+
+    option (google.api.method_signature) = "parent,book_edition";
+  }
+
+  // An aep-compliant Get method for book-edition.
+  rpc GetBookEdition ( GetBookEditionRequest ) returns ( BookEdition ) {
+    option (google.api.http) = { get: "/{path=publishers/*/books/*/editions/*}" };
+
+    option (google.api.method_signature) = "path";
+  }
+
+  // An aep-compliant Delete method for book-edition.
+  rpc DeleteBookEdition ( DeleteBookEditionRequest ) returns ( google.protobuf.Empty ) {
+    option (google.api.http) = {
+      delete: "/{path=publishers/*/books/*/editions/*}"
+    };
+
+    option (google.api.method_signature) = "path";
+  }
+
+  // An aep-compliant List method for book-editions.
+  rpc ListBookEditions ( ListBookEditionsRequest ) returns ( ListBookEditionsResponse ) {
+    option (google.api.http) = { get: "/{parent=publishers/*/books/*}/editions" };
+
+    option (google.api.method_signature) = "parent";
+  }
+
+  // An aep-compliant Create method for isbn.
+  rpc CreateIsbn ( CreateIsbnRequest ) returns ( Isbn ) {
+    option (google.api.http) = { post: "/{parent=isbns}", body: "isbn" };
+
+    option (google.api.method_signature) = "isbn";
+  }
+
+  // An aep-compliant Get method for isbn.
+  rpc GetIsbn ( GetIsbnRequest ) returns ( Isbn ) {
+    option (google.api.http) = { get: "/{path=isbns/*}" };
+
+    option (google.api.method_signature) = "path";
+  }
+
+  // An aep-compliant List method for isbns.
+  rpc ListIsbns ( ListIsbnsRequest ) returns ( ListIsbnsResponse ) {
+    option (google.api.http) = { get: "/{parent=isbns}" };
+
+    option (google.api.method_signature) = "parent";
+  }
+
+  // An aep-compliant Create method for publisher.
+  rpc CreatePublisher ( CreatePublisherRequest ) returns ( Publisher ) {
+    option (google.api.http) = {
+      post: "/{parent=publishers}",
+      body: "publisher"
+    };
+
+    option (google.api.method_signature) = "publisher";
+  }
+
+  // An aep-compliant Get method for publisher.
+  rpc GetPublisher ( GetPublisherRequest ) returns ( Publisher ) {
+    option (google.api.http) = { get: "/{path=publishers/*}" };
+
+    option (google.api.method_signature) = "path";
+  }
+
+  // An aep-compliant Update method for publisher.
+  rpc UpdatePublisher ( UpdatePublisherRequest ) returns ( Publisher ) {
+    option (google.api.http) = {
+      patch: "/{path=publishers/*}",
+      body: "publisher"
+    };
+
+    option (google.api.method_signature) = "publisher,update_mask";
+  }
+
+  // An aep-compliant Delete method for publisher.
+  rpc DeletePublisher ( DeletePublisherRequest ) returns ( google.protobuf.Empty ) {
+    option (google.api.http) = { delete: "/{path=publishers/*}" };
+
+    option (google.api.method_signature) = "path";
+  }
+
+  // An aep-compliant List method for publishers.
+  rpc ListPublishers ( ListPublishersRequest ) returns ( ListPublishersResponse ) {
+    option (google.api.http) = { get: "/{parent=publishers}" };
+
+    option (google.api.method_signature) = "parent";
+  }
+
+  // An aep-compliant Apply method for publishers.
+  rpc ApplyPublisher ( ApplyPublisherRequest ) returns ( Publisher ) {
+    option (google.api.http) = { put: "/{path=publishers/*}", body: "publisher" };
+  }
+
+  // An aep-compliant custom method Archive method for publisher.
+  rpc ArchivePublisher ( ArchivePublisherRequest ) returns ( ArchivePublisherResponse ) {
+    option (google.api.http) = { post: "/{path=publishers/*}:archive" };
+  }
+}
+
+// A Book.
+message Book {
+  option (google.api.resource) = {
+    type: "bookstore.example.com/book",
+    pattern: [ "publishers/{publisher}/books/{book}" ],
+    plural: "books",
+    singular: "book"
+  };
+
+  // A Author.
+  message Author {
+    // Field for firstName.
+    string firstName = 1;
+
+    // Field for lastName.
+    string lastName = 2;
+  }
+
+  // Field for author.
+  repeated Author author = 5;
+
+  // Field for isbn.
+  repeated string isbn = 1 [(google.api.field_behavior) = REQUIRED];
+
+  // Field for price.
+  float price = 2 [(google.api.field_behavior) = REQUIRED];
+
+  // Field for published.
+  bool published = 3 [(google.api.field_behavior) = REQUIRED];
+
+  // Field for edition.
+  int32 edition = 4;
+
+  // Field for path.
+  string path = 10000;
+}
+
+// A Create request for a  book resource.
+message CreateBookRequest {
+  // A field for the parent of book
+  string parent = 10013 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { }
+  ];
+
+  // An id that uniquely identifies the resource within the collection
+  string id = 10014;
+
+  // The resource to perform the operation on.
+  Book book = 10015 [(google.api.field_behavior) = REQUIRED];
+}
+
+// Request message for the Getbook method
+message GetBookRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/book" }
+  ];
+}
+
+// Request message for the UpdateBook method
+message UpdateBookRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/book" }
+  ];
+
+  // The resource to perform the operation on.
+  Book book = 10015 [(google.api.field_behavior) = REQUIRED];
+
+  // The update mask for the resource
+  google.protobuf.FieldMask update_mask = 10012;
+}
+
+// Request message for the DeleteBook method
+message DeleteBookRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/book" }
+  ];
+
+  // If true, the resource will be deleted even if it still has children.
+  bool force = 10020;
+}
+
+// Request message for the Listbook method
+message ListBooksRequest {
+  // A field for the parent of book
+  string parent = 10013 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { }
+  ];
+
+  // The page token indicating the starting point of the page
+  string page_token = 10010;
+
+  // The maximum number of resources to return in a single page.
+  int32 max_page_size = 10017;
+}
+
+// Response message for the Listbook method
+message ListBooksResponse {
+  // A list of books
+  repeated Book results = 10016;
+
+  // The page token indicating the ending point of this response.
+  string next_page_token = 10011;
+}
+
+// Request message for the Applybook method
+message ApplyBookRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/book" }
+  ];
+
+  // The resource to perform the operation on.
+  Book book = 10015 [(google.api.field_behavior) = REQUIRED];
+}
+
+// A BookEdition.
+message BookEdition {
+  option (google.api.resource) = {
+    type: "bookstore.example.com/book-edition",
+    pattern: [
+      "publishers/{publisher}/books/{book}/editions/{book-edition}"
+    ],
+    plural: "book-editions",
+    singular: "book-edition"
+  };
+
+  // Field for displayname.
+  string displayname = 1 [(google.api.field_behavior) = REQUIRED];
+
+  // Field for path.
+  string path = 10000;
+}
+
+// A Create request for a  book-edition resource.
+message CreateBookEditionRequest {
+  // A field for the parent of book-edition
+  string parent = 10013 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { }
+  ];
+
+  // An id that uniquely identifies the resource within the collection
+  string id = 10014;
+
+  // The resource to perform the operation on.
+  BookEdition book_edition = 10015 [(google.api.field_behavior) = REQUIRED];
+}
+
+// Request message for the Getbook-edition method
+message GetBookEditionRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/book-edition" }
+  ];
+}
+
+// Request message for the DeleteBookEdition method
+message DeleteBookEditionRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/book-edition" }
+  ];
+}
+
+// Request message for the Listbook-edition method
+message ListBookEditionsRequest {
+  // A field for the parent of book-edition
+  string parent = 10013 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { }
+  ];
+
+  // The page token indicating the starting point of the page
+  string page_token = 10010;
+
+  // The maximum number of resources to return in a single page.
+  int32 max_page_size = 10017;
+}
+
+// Response message for the Listbook-edition method
+message ListBookEditionsResponse {
+  // A list of book-editions
+  repeated BookEdition results = 10016;
+
+  // The page token indicating the ending point of this response.
+  string next_page_token = 10011;
+}
+
+// A Isbn.
+message Isbn {
+  option (google.api.resource) = {
+    type: "bookstore.example.com/isbn",
+    pattern: [ "isbns/{isbn}" ],
+    plural: "isbns",
+    singular: "isbn"
+  };
+
+  // Field for path.
+  string path = 10000;
+}
+
+// A Create request for a  isbn resource.
+message CreateIsbnRequest {
+  // A field for the parent of isbn
+  string parent = 10013 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { }
+  ];
+
+  // The resource to perform the operation on.
+  Isbn isbn = 10015 [(google.api.field_behavior) = REQUIRED];
+}
+
+// Request message for the Getisbn method
+message GetIsbnRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/isbn" }
+  ];
+}
+
+// Request message for the Listisbn method
+message ListIsbnsRequest {
+  // A field for the parent of isbn
+  string parent = 10013 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { }
+  ];
+
+  // The page token indicating the starting point of the page
+  string page_token = 10010;
+
+  // The maximum number of resources to return in a single page.
+  int32 max_page_size = 10017;
+}
+
+// Response message for the Listisbn method
+message ListIsbnsResponse {
+  // A list of isbns
+  repeated Isbn results = 10016;
+
+  // The page token indicating the ending point of this response.
+  string next_page_token = 10011;
+}
+
+// A Publisher.
+message Publisher {
+  option (google.api.resource) = {
+    type: "bookstore.example.com/publisher",
+    pattern: [ "publishers/{publisher}" ],
+    plural: "publishers",
+    singular: "publisher"
+  };
+
+  // Field for description.
+  string description = 1;
+
+  // Field for path.
+  string path = 10000;
+}
+
+// A Create request for a  publisher resource.
+message CreatePublisherRequest {
+  // A field for the parent of publisher
+  string parent = 10013 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { }
+  ];
+
+  // An id that uniquely identifies the resource within the collection
+  string id = 10014;
+
+  // The resource to perform the operation on.
+  Publisher publisher = 10015 [(google.api.field_behavior) = REQUIRED];
+}
+
+// Request message for the Getpublisher method
+message GetPublisherRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/publisher" }
+  ];
+}
+
+// Request message for the UpdatePublisher method
+message UpdatePublisherRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/publisher" }
+  ];
+
+  // The resource to perform the operation on.
+  Publisher publisher = 10015 [(google.api.field_behavior) = REQUIRED];
+
+  // The update mask for the resource
+  google.protobuf.FieldMask update_mask = 10012;
+}
+
+// Request message for the DeletePublisher method
+message DeletePublisherRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/publisher" }
+  ];
+
+  // If true, the resource will be deleted even if it still has children.
+  bool force = 10020;
+}
+
+// Request message for the Listpublisher method
+message ListPublishersRequest {
+  // A field for the parent of publisher
+  string parent = 10013 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { }
+  ];
+
+  // The page token indicating the starting point of the page
+  string page_token = 10010;
+
+  // The maximum number of resources to return in a single page.
+  int32 max_page_size = 10017;
+}
+
+// Response message for the Listpublisher method
+message ListPublishersResponse {
+  // A list of publishers
+  repeated Publisher results = 10016;
+
+  // The page token indicating the ending point of this response.
+  string next_page_token = 10011;
+}
+
+// Request message for the Applypublisher method
+message ApplyPublisherRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/publisher" }
+  ];
+
+  // The resource to perform the operation on.
+  Publisher publisher = 10015 [(google.api.field_behavior) = REQUIRED];
+}
+
+// Request message for the Archivepublisher method
+message ArchivePublisherRequest {
+  // The globally unique identifier for the resource
+  string path = 10018 [
+    (google.api.field_behavior) = REQUIRED,
+    (google.api.resource_reference) = { type: "bookstore.example.com/publisher" }
+  ];
+}
+
+// Response message for the Archivepublisher method
+message ArchivePublisherResponse {
+}