Thanks for the answer. I will have a look at Oauth 2.0. But one thing that 
I'm curious about is, since my application doesn't involve any user input 
how do I grant
permission with Oauth2 in a convenient way? In my application the requests 
to the API is handled by a script not a user.

On Tuesday, August 7, 2012 6:28:01 AM UTC+2, Hudarsono Hu wrote:
>
> HI,
>
> Its the same with me.
>
> You should migrate to OAuth2 as authentication from ClientLogin. Google 
> limit the number of request per minute if we use ClientLogin.
>
> I also still migrating and is experiencing problem with the Ruby Client 
> Library in OAuth2. Hopefully they will answer my email soon.
>
> Cheers
>
> On Tuesday, August 7, 2012 2:21:52 AM UTC+7, yoshi wrote:
>>
>>
>> Hi,
>>
>> Recently I get a lot of *CaptchaRequiredError*'s using the Adwords API. 
>> I'm building an application that executes requests to the API frequently
>> using the Ruby client library. I'm using ClientLogin as authentication 
>> method and version v201206 of the API.
>>
>> All I do is creating an instance of 
>> AdwordsApi::Api.new(my_hash_with_settings) and reuse it for every request.
>>
>> Earlier this hasn't been a problem until now. Even if I dont touch 
>> the authtoken endpoint for every request (which I believe I don't) is there 
>> still
>> a request/second limit that also raises the *CaptchaRequiredError*? By 
>> the way, I get the same error in SANDBOX environment.
>>
>> I don't know how to debug this since I havent' change anything. And I 
>> send the same amount of request now as then.
>>
>> Regards
>>
>

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