Exemplo de formulário para inclusão de cliente

Segue abaixo um exemplo em html de um formulário para a inclusão do cliente:

<iframe name="frame" id="frame" style="display: none;"></iframe>
<form action="https://assinamais.com.br/api_services/insert_contact" method="get" target="frame" onsubmit="this.submit(); this.reset(); return false">
	<fieldset>
		<legend>Formulário Cliente</legend>
	<table>
	<tr>
		<td><input type="text" name="client_id" id="client_id" value="<client_id>" hidden required/></td>
	</tr>
	<tr>
		<tr><td><input type="text" name="keys" id="keys" value="<keys>" hidden required/></td></tr>
	</tr>
	<tr>
		<tr><td><input type="text" name="merchant_token" id="merchant_token" value="<merchant_token>" hidden required/></td></tr>
	</tr>
	<tr>
		<td class="tdLabel"><label for="name" class="label" style="margin-top: auto;">Nome:</label></td>
		<tr><td><input type="text" name="name" id="name" style="width:300px; height: 22px" required/></td></tr>
	</tr>
	<tr>
		<td class="tdLabel"><label for="email" class="label">Email:</label></td>
		<tr><td><input type="email" name="email" id="email" style="width:300px; height: 22px; margin-bottom: 5px" required/></td></tr>
	</tr>
  	<tr>
  		<td class="tdLabel"><label for="phone" class="label">Telefone:</label></td>
  		<tr><td><input type="tel" name="phone" value="" id="phone" style="width:160px; height: 22px; margin-bottom: 5px" required/></td></tr>
  	</tr>
  	<tr>
  		<td class="tdLabel"><label for="address" class="label">Endereço:</label></td>
  	<tr><td><input type="text" name="address" value="" id="address" style="width:300px; height: 22px; margin-bottom: 5px" required/></td></tr>
  	</tr>
  	<tr>
  	<td class="tdLabel"><label for="status" class="label">Status:</label></td>
  	<tr><td>
    	<select style="width:165px; height: 27px; margin-bottom: 5px; font-size: 15px;" name="status" id="status" required>
  			<option value="" selected disabled hidden>Selecione</option>
  			<option value="active">Ativo</option>
  			<option value="pending">Pendente</option>
  		</select></td></tr>
  	</tr>
  	<tr>
  		<td class="tdLabel"><label for="cpf_cnpj" class="label">CEP:</label></td>
      	<tr><td><input type="text" name="cep" value="" id="cep" style="width: 200px; height: 22px" /></td></tr>
  	</tr>
  	<tr>
  		<td class="tdLabel"><label for="uf" class="label">UF:</label></td>
  		<tr><td><input type="text" name="uf" value="" id="text" style="width:160px; height: 22px; margin-bottom: 5px" /></td></tr>
  	</tr>
  	<tr>
  		<td class="tdLabel"><label for="cidade" class="label">Cidade:</label></td>
  		<tr><td><input type="text" name="cidade" value="" id="cidade" style="width:300px; height: 22px; margin-bottom: 5px;" /></td></tr>
  	</tr>
  	<tr>
  		<td class="tdLabel"><label for="cpf_cnpj" class="label">CPF/CNPJ:</label></td>
  		<tr><td><input type="text" name="cpf_cnpj" value="" id="cpf_cnpj" style="width: 300px; height: 22px" /></td></tr>
  	</tr>
  	<tr>
  		<td colspan="2"><input type="submit" id="registrarCliente" value="Cadastrar" style="width:100px; height: 27px; margin-top: 10px;"/></td>
  	</tr>
  	</table>
  </fieldset>
</form>
em API