diff --git a/plugin-runtime-types/package.json b/plugin-runtime-types/package.json
index d9cb6a91..8d30049f 100644
--- a/plugin-runtime-types/package.json
+++ b/plugin-runtime-types/package.json
@@ -7,7 +7,8 @@
     "lib"
   ],
   "scripts": {
-    "prepublish": "tsc"
+    "build": "tsc",
+    "prepublish": "npm run build"
   },
   "dependencies": {
     "@types/node": "^22.0.0"
diff --git a/plugin-runtime-types/src/helpers.ts b/plugin-runtime-types/src/helpers.ts
index be548943..eaf85448 100644
--- a/plugin-runtime-types/src/helpers.ts
+++ b/plugin-runtime-types/src/helpers.ts
@@ -1,2 +1,2 @@
 export type AtLeast<T, K extends keyof T> = Partial<T> & Pick<T, K>;
-export type SingleOrArray<T> = T[] | T;
+export type OneOrMany<T> = T[] | T;
diff --git a/plugin-runtime-types/src/plugins/filter.ts b/plugin-runtime-types/src/plugins/filter.ts
new file mode 100644
index 00000000..80a223c2
--- /dev/null
+++ b/plugin-runtime-types/src/plugins/filter.ts
@@ -0,0 +1,13 @@
+import { YaakContext } from './context';
+
+export type FilterPluginResponse = string[];
+
+export type FilterPlugin = {
+  name: string;
+  description?: string;
+  canFilter(ctx: YaakContext, args: { mimeType: string }): Promise<boolean>;
+  onFilter(
+    ctx: YaakContext,
+    args: { payload: string; mimeType: string },
+  ): Promise<FilterPluginResponse>;
+};
diff --git a/plugin-runtime-types/src/plugins/httpRequestAction.ts b/plugin-runtime-types/src/plugins/httpRequestAction.ts
new file mode 100644
index 00000000..547396e9
--- /dev/null
+++ b/plugin-runtime-types/src/plugins/httpRequestAction.ts
@@ -0,0 +1,8 @@
+import { HttpRequest } from '../models';
+import { YaakContext } from './context';
+
+export type HttpRequestActionPlugin = {
+  key: string;
+  label: string;
+  onSelect(ctx: YaakContext, args: { httpRequest: HttpRequest }): void;
+};
diff --git a/plugin-runtime-types/src/plugins/import.ts b/plugin-runtime-types/src/plugins/import.ts
index 6868ef3f..51873486 100644
--- a/plugin-runtime-types/src/plugins/import.ts
+++ b/plugin-runtime-types/src/plugins/import.ts
@@ -3,14 +3,14 @@ import { Environment, Folder, HttpRequest, Workspace } from '../models';
 import { YaakContext } from './context';
 
 export type ImportPluginResponse = null | {
-  resources: Partial<{
-    workspaces: AtLeast<Workspace, 'name' | 'id' | 'model'>[];
-    environments: AtLeast<Environment, 'name' | 'id' | 'model' | 'workspaceId'>[];
-    httpRequests: AtLeast<HttpRequest, 'name' | 'id' | 'model' | 'workspaceId'>[];
-    folders: AtLeast<Folder, 'name' | 'id' | 'model' | 'workspaceId'>[];
-  }>;
+  workspaces: AtLeast<Workspace, 'name' | 'id' | 'model'>[];
+  environments: AtLeast<Environment, 'name' | 'id' | 'model' | 'workspaceId'>[];
+  httpRequests: AtLeast<HttpRequest, 'name' | 'id' | 'model' | 'workspaceId'>[];
+  folders: AtLeast<Folder, 'name' | 'id' | 'model' | 'workspaceId'>[];
 };
 
 export type ImporterPlugin = {
-  onImport(ctx: YaakContext, fileContents: string): Promise<ImportPluginResponse>;
+  name: string;
+  description?: string;
+  onImport(ctx: YaakContext, args: { text: string }): Promise<ImportPluginResponse>;
 };
diff --git a/plugin-runtime-types/src/plugins/index.ts b/plugin-runtime-types/src/plugins/index.ts
index e6716db9..db1da8e2 100644
--- a/plugin-runtime-types/src/plugins/index.ts
+++ b/plugin-runtime-types/src/plugins/index.ts
@@ -1,4 +1,6 @@
-import { SingleOrArray } from '../helpers';
+import { OneOrMany } from '../helpers';
+import { FilterPlugin } from './filter';
+import { HttpRequestActionPlugin } from './httpRequestAction';
 import { ImporterPlugin } from './import';
 import { ThemePlugin } from './theme';
 
@@ -6,8 +8,8 @@ import { ThemePlugin } from './theme';
  * The global structure of a Yaak plugin
  */
 export type YaakPlugin = {
-  /** One or many plugins to import data into Yaak */
-  importers?: SingleOrArray<ImporterPlugin>;
-  /** One or many themes to customize the Yaak UI */
-  themes?: SingleOrArray<ThemePlugin>;
+  importer?: OneOrMany<ImporterPlugin>;
+  theme?: OneOrMany<ThemePlugin>;
+  filter?: OneOrMany<FilterPlugin>;
+  httpRequestAction?: OneOrMany<HttpRequestActionPlugin>;
 };
diff --git a/plugin-runtime-types/src/plugins/theme.ts b/plugin-runtime-types/src/plugins/theme.ts
index fb8b2312..3b1efb7f 100644
--- a/plugin-runtime-types/src/plugins/theme.ts
+++ b/plugin-runtime-types/src/plugins/theme.ts
@@ -1,5 +1,8 @@
 import { Theme } from '../themes';
+import { YaakContext } from './context';
 
 export type ThemePlugin = {
-  theme: Theme;
+  name: string;
+  description?: string;
+  getTheme(ctx: YaakContext, fileContents: string): Promise<Theme>;
 };