add article about DDG

config.toml

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 [markdown]
 # Whether to do syntax highlighting
 # Theme can be customised by setting the `highlight_theme` variable to a theme supported by Zola
-highlight_code = false
+highlight_code = true
 
 [extra]
 # Put all your custom variables here

content/blog/duckduck-ai-chat.md

@@ -0,0 +1,61 @@
++++
+template = 'custom/blog-post.html'
+
+title = 'duckduckgo ai chat thing'
+description = 'its kinda cool'
+date = '2024-04-11'
+slug = 'duckduckgo-ai-chat'
+year = 2024
+month = 4
+day = 11
+lang = 'en'
+
+[extra]
+author = 'b1ek <me@blek.codes>'
++++
+
+so, a few days ago i've noticed that duckduckgo has this weird new "ai chat" option:  
+![screenshot of duckduckgo page with a red arrow pointing to the "Chat" button](/blog-image/chat-btn.png)
+
+it allows you to select two models: claude 1.2 and chatgpt 3.5. the last one is widely known, however you can find some info on claude [here](https://www.anthropic.com/news/releasing-claude-instant-1-2)
+
+as i've always wondered just how real their claims are that your identity is never attached to the models, i've decided to research into the API.
+
+## chat APIs
+
+| Disclaimer: The following section is of educational purposes only. Please do not scrape DuckDuckGo's APIs, as it would only hurt the company which honestly cares about your privacy. |
+| --- |
+
+obviously the first thing i wanted to do see if there is a public chat API. i wasn't suprised when i couldn't find info on any of the public duckduckgo APIs(probably because there isn't any), other than [this stackoverflow answer](https://stackoverflow.com/questions/29346239/duckduckgo-api-how-to-get-more-results)
+
+however i've investigated a bit and turns out that client API is not that complicated as i thought.
+
+now, first of all you need yo obtain the API token via `GET https://duckduckgo.com/duckchat/v1/status` with a header `x-vqd-accept: 1`. the api token will be in the `x-vqd-4` header. it seems a bit tricky to get the right token without it throwing a `ERR_INVALID_VQD` error later, so its best to copy the request as cURL from your browser.
+
+it is quite weird actually that it seems to be accepting only genuine browser-generated headers. however they contain little to no identifying data.
+
+after you got the api key, send a `POST https://duckduckgo.com/duckchat/v1/chat` with a header `x-vqd-4: the-vqd-header-from-previous-request`.
+
+the payload seems to be of this TS type and encoded via JSON:
+
+```ts
+type ChatPayload {
+    messages: { content: string, role: 'user' }[],
+    model: 'claude-instant-1.2' | 'gpt-3.5-turbo-0125'
+}
+```
+
+then the API will return the response word-by-word in a good ol' streamed http response in chunks like this:
+```json
+\n
+data: {"role":"assistant","message":".","created":1712840811713,"id":"compl_8pC9nVX8QJlN92jUtcJR8TgB","action":"success","model":"claude-instant-1.2"}
+```
+
+also the `/duckchat/v1/chat` request gives you the new VQD which you gotta use for the future requests.
+
+i guess someone could fashion a cli program to read data from that API and print it out in the console.
+
+## the verdict
+i think its safe to say that no identity data is collected via the chat APIs, other than your IP address, which by itself is not usually enough to identify a user, especially if you're sitting on a public network.
+
+also if someone from the team who made the API reads this, please tell me if i missed some points, and what the hell does VQD even mean.

sass/base.scss

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         text-decoration: underline !important;
     }
 }
+
+pre code {
+	padding: 0.5em 1em;
+	display: block;
+}
+

templates/base.html

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         <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
         <link href="https://fonts.googleapis.com/css2?family=Noto+Serif+JP:wght@400;700&display=swap" rel="stylesheet">
         <style>
-            * { font-family: 'Noto Serif JP' }
+            html { font-family: 'Noto Serif JP' }
         </style>
 
         <title>blek! World</title>