diff --git a/src/tools/api-tester/api-tester.vue b/src/tools/api-tester/api-tester.vue
new file mode 100644
index 00000000..7ebf503f
--- /dev/null
+++ b/src/tools/api-tester/api-tester.vue
@@ -0,0 +1,118 @@
+<script setup lang="ts">
+import { useQueryParamOrStorage } from '@/composable/queryParams';
+import TextareaCopyable from '@/components/TextareaCopyable.vue';
+
+interface KeyValuePair {
+  key: string
+  value?: string
+}
+const baseUrl = useQueryParamOrStorage({ name: 'url', storageName: 'api-tester:url', defaultValue: '' });
+const method = useQueryParamOrStorage({ name: 'method', storageName: 'api-tester:m', defaultValue: 'POST' });
+const queryParams = useQueryParamOrStorage<KeyValuePair[]>({ name: 'params', storageName: 'api-tester:params', defaultValue: [] });
+const headers = useQueryParamOrStorage<KeyValuePair[]>({ name: 'headers', storageName: 'api-tester:headers', defaultValue: [] });
+const body = useQueryParamOrStorage({ name: 'body', storageName: 'api-tester:body', defaultValue: '' });
+const apiCallResult = ref();
+
+const inprogress = ref(false);
+async function callAPI() {
+  const url = new URL(baseUrl.value);
+  for (const kv of queryParams.value) {
+    url.searchParams.append(kv.key, kv.value || '');
+  }
+  const queryHeaders = [] as [string, string][];
+  for (const kv of headers.value) {
+    queryHeaders.push([kv.key, kv.value || '']);
+  }
+
+  try {
+    const response = await fetch(url, {
+      method: method.value,
+      headers: queryHeaders,
+      body: body.value,
+    });
+
+    apiCallResult.value = {
+      code: response.status,
+      error: '',
+      result: await response.text(),
+    };
+  }
+  catch (err: any) {
+    apiCallResult.value = {
+      code: -1,
+      error: err.toString(),
+      result: null,
+    };
+  }
+}
+</script>
+
+<template>
+  <div>
+    <c-card title="">
+      <c-input-text
+        v-model:value="baseUrl"
+        label="Base API Url"
+        placeholder="Base API Url"
+        mb-2
+      />
+
+      <c-select
+        v-model:value="method"
+        label="HTTP Method:"
+        :options="['GET', 'POST', 'PUT', 'DELETE', 'PATCH']"
+      />
+
+      <c-card title="Headers" mb-2>
+        <n-dynamic-input v-model:value="headers">
+          <template #create-button-default>
+            Add a new HTTP Header
+          </template>
+          <template #default="{ value }">
+            <div style="display: flex; align-items: center; width: 100%">
+              <n-input v-model:value="value.key" type="text" />
+              <n-input v-model:value="value.value" type="text" />
+            </div>
+          </template>
+        </n-dynamic-input>
+      </c-card>
+
+      <c-card title="Query Parameters" mb-2>
+        <n-dynamic-input v-model:value="queryParams">
+          <template #create-button-default>
+            Add a new HTTP Header
+          </template>
+          <template #default="{ value }">
+            <div style="display: flex; align-items: center; width: 100%">
+              <n-input v-model:value="value.key" type="text" />
+              <n-input v-model:value="value.value" type="text" />
+            </div>
+          </template>
+        </n-dynamic-input>
+      </c-card>
+      <c-input-text
+        v-model:value="body"
+        label="Body"
+        placeholder="HTTP Query body"
+        multiline
+        monospace
+        mb-2
+      />
+
+      <c-button secondary @click="callAPI">
+        Call API
+      </c-button>
+    </c-card>
+    <n-spin
+      v-if="inprogress"
+      size="small"
+    />
+    <c-alert v-if="!inprogress && apiCallResult.code !== 200" type="error" mt-12 title="Error while calling API">
+      <p><strong>Status code = {{ apiCallResult.code }}</strong></p>
+      <TextareaCopyable :value="apiCallResult.error" />
+    </c-alert>
+    <c-card v-if="!inprogress && apiCallResult.code === 200" mt-12 title="API Call result">
+      <TextareaCopyable :value="apiCallResult.result" />
+    </c-card>
+  </div>
+</template>
diff --git a/src/tools/api-tester/index.ts b/src/tools/api-tester/index.ts
new file mode 100644
index 00000000..5ea35536
--- /dev/null
+++ b/src/tools/api-tester/index.ts
@@ -0,0 +1,12 @@
+import { World } from '@vicons/tabler';
+import { defineTool } from '../tool';
+
+export const tool = defineTool({
+  name: 'API Tester',
+  path: '/api-tester',
+  description: 'HTTP API Tester',
+  keywords: ['api', 'http', 'call', 'tester'],
+  component: () => import('./api-tester.vue'),
+  icon: World,
+  createdAt: new Date('2024-05-11'),
+});
diff --git a/src/tools/index.ts b/src/tools/index.ts
index aa861c93..f8e5c40c 100644
--- a/src/tools/index.ts
+++ b/src/tools/index.ts
@@ -6,6 +6,7 @@ import { tool as asciiTextDrawer } from './ascii-text-drawer';
 
 import { tool as textToUnicode } from './text-to-unicode';
 import { tool as safelinkDecoder } from './safelink-decoder';
+import { tool as apiTester } from './api-tester';
 import { tool as pdfSignatureChecker } from './pdf-signature-checker';
 import { tool as numeronymGenerator } from './numeronym-generator';
 import { tool as macAddressGenerator } from './mac-address-generator';
@@ -128,6 +129,7 @@ export const toolsByCategory: ToolCategory[] = [
       httpStatusCodes,
       jsonDiff,
       safelinkDecoder,
+      apiTester,
     ],
   },
   {