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[bioontology-support] Maximum length of request via NCBO ontology recommender service

Michael Dorf mdorf at
Wed May 11 11:47:18 PDT 2016

Hi Phil,

Is your request a GET or a POST? If it's the former, this link has a useful explanation on individual server's request limits:

POST requests generally have larger limits, but I suppose you can still hit a server restriction somewhere along the request stack. For example, we use nginx as our load balancer, and it enforces a limit of 1GB on the request body size.

Hope this info helps! Thank you for writing to us.


On May 8, 2016, at 09:16, Phil Kiossoglou <phil.kiossoglou at<mailto:phil.kiossoglou at>> wrote:


Do you know what the maximum length of requests made to the recommender endpoint of the NCBO API is?

I have tried providing an entire paper, with spaces converted to + signs, and receive an http 414 error in response.

I have tried looking through the available documentation and haven't found an answer.  The interactive bioportal recommender tool is limited to 500 words and it advises use of the API for longer requests so I assume the maximum is greater than that.

Thanks and regards,

bioontology-support mailing list
bioontology-support at<mailto:bioontology-support at>

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