An example of how to post content to a Tumblr blog with Lua. Usable in Webscript.io

rss-to-tumblr.lua

local tumblrName = "" -- Name of the Tumblr blog where the content will be posted

-- Extrat the data from the JSON notification and prepare it to be used as a Tumblr 'quote'.
local jsonContent = json.parse(request.body) 
local quote = jsonContent.items[1].title
local sourceTitle = jsonContent.title 
local sourceLink = jsonContent.standardLinks.self[1].href

-- Authenication against the Tumblr API. You will need to create an application and grab the OAuth access token.
-- Follow these instructions http://www.tumblr.com/oauth/apps and https://gist.github.com/4219558
local AUTH = { oauth = { consumertoken='', consumersecret='', accesstoken='', tokensecret=''} }

-- Post the content to Tumblr
local res = http.request {
  url = "http://api.tumblr.com/v2/blog/" .. tumblrName .. ".tumblr.com/post",
  method = "POST",
  auth = AUTH,
  data = {
    type = "quote",
    quote = quote,
    source = "<a href='"..sourceLink.."'>"..sourceTitle.."</a>"
  }
}

-- Return it. Not so useful at this point
return res.statuscode, res.content