diff --git a/packages/plugin-runtime-types/src/plugins/Context.ts b/packages/plugin-runtime-types/src/plugins/Context.ts
index 5a481b04..b03b6fd2 100644
--- a/packages/plugin-runtime-types/src/plugins/Context.ts
+++ b/packages/plugin-runtime-types/src/plugins/Context.ts
@@ -17,8 +17,8 @@ import type {
   SendHttpRequestResponse,
   ShowToastRequest,
   TemplateRenderRequest,
-  TemplateRenderResponse,
 } from '../bindings/gen_events.ts';
+import { JsonValue } from '../bindings/serde_json/JsonValue';
 
 export interface Context {
   clipboard: {
@@ -59,6 +59,6 @@ export interface Context {
     find(args: FindHttpResponsesRequest): Promise<FindHttpResponsesResponse['httpResponses']>;
   };
   templates: {
-    render(args: TemplateRenderRequest): Promise<TemplateRenderResponse['data']>;
+    render<T extends JsonValue>(args: TemplateRenderRequest & { data: T }): Promise<T>;
   };
 }
diff --git a/plugins/template-function-request/src/index.ts b/plugins/template-function-request/src/index.ts
index df5d2ac9..28814558 100755
--- a/plugins/template-function-request/src/index.ts
+++ b/plugins/template-function-request/src/index.ts
@@ -1,3 +1,4 @@
+import type { HttpUrlParameter } from '@yaakapp-internal/models';
 import type { CallTemplateFunctionArgs, Context, PluginDefinition } from '@yaakapp/api';
 
 export const plugin: PluginDefinition = {
@@ -53,5 +54,47 @@ export const plugin: PluginDefinition = {
         );
       },
     },
+    {
+      name: 'request.param',
+      args: [
+        {
+          name: 'requestId',
+          label: 'Http Request',
+          type: 'http_request',
+        },
+        {
+          name: 'param',
+          label: 'Param Name',
+          type: 'text',
+        },
+      ],
+      async onRender(ctx: Context, args: CallTemplateFunctionArgs): Promise<string | null> {
+        const paramName = String(args.values.param ?? '');
+        const requestId = String(args.values.requestId ?? 'n/a');
+        const httpRequest = await ctx.httpRequest.getById({ id: requestId });
+        if (httpRequest == null) return null;
+
+        const renderedUrl = await ctx.templates.render({
+          data: httpRequest.url,
+          purpose: args.purpose,
+        });
+
+        const querystring = renderedUrl.split('?')[1] ?? '';
+        const paramsFromUrl: HttpUrlParameter[] = new URLSearchParams(querystring)
+          .entries()
+          .map(([name, value]): HttpUrlParameter => ({ name, value }))
+          .toArray();
+
+        const allParams = [...paramsFromUrl, ...httpRequest.urlParameters];
+        const allEnabledParams = allParams.filter((p) => p.enabled !== false);
+        const foundParam = allEnabledParams.find((p) => p.name === paramName);
+
+        const renderedValue = await ctx.templates.render({
+          data: foundParam?.value ?? '',
+          purpose: args.purpose,
+        });
+        return renderedValue;
+      },
+    },
   ],
 };
diff --git a/src-web/components/DynamicForm.tsx b/src-web/components/DynamicForm.tsx
index 29b17c46..fe46a23a 100644
--- a/src-web/components/DynamicForm.tsx
+++ b/src-web/components/DynamicForm.tsx
@@ -12,7 +12,7 @@ import type {
 } from '@yaakapp-internal/plugins';
 import classNames from 'classnames';
 import { useAtomValue } from 'jotai';
-import { useCallback } from 'react';
+import { useCallback, useEffect } from 'react';
 import { useActiveRequest } from '../hooks/useActiveRequest';
 import { useRandomKey } from '../hooks/useRandomKey';
 import { capitalize } from '../lib/capitalize';
@@ -415,7 +415,7 @@ function FileArg({
       disabled={arg.disabled}
       help={arg.description}
       onChange={({ filePath }) => onChange(filePath)}
-      filePath={filePath === '__NULL__' ? null : filePath}
+      filePath={filePath === DYNAMIC_FORM_NULL_ARG ? null : filePath}
       directory={!!arg.directory}
     />
   );
@@ -432,7 +432,14 @@ function HttpRequestArg({
 }) {
   const folders = useAtomValue(foldersAtom);
   const httpRequests = useAtomValue(httpRequestsAtom);
-  const activeRequest = useActiveRequest();
+  const activeHttpRequest = useActiveRequest('http_request');
+
+  useEffect(() => {
+    if (value === DYNAMIC_FORM_NULL_ARG && activeHttpRequest) {
+      onChange(activeHttpRequest.id);
+    }
+  }, [activeHttpRequest, onChange, value]);
+
   return (
     <Select
       label={arg.label ?? arg.name}
@@ -446,7 +453,7 @@ function HttpRequestArg({
           return {
             label:
               buildRequestBreadcrumbs(r, folders).join(' / ') +
-              (r.id == activeRequest?.id ? ' (current)' : ''),
+              (r.id == activeHttpRequest?.id ? ' (current)' : ''),
             value: r.id,
           };
         }),