Show HN: GETadb.com – every GET request creates a DB

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Summary

GETadb.com offers an instant backend with a relational database, sync engine, and auth, accessible via a simple GET request without sign-up, allowing AI agents like Claude or Codex to build full-stack apps seamlessly.

Hey HN! We made GETadb.com, so it&#x27;s easier to get agents to build you full stack apps. You don&#x27;t need to give them any credentials. Just by loading a GET request, they get access to a database, a sync engine, and abstractions for auth, presence, and streams.<p>To see what the agent sees, you can load https:&#x2F;&#x2F;getadb.com&#x2F;new<p>There&#x27;s two fun things about how it&#x27;s implemented:<p>1. If you curl the home page, it the agent content rather than human content. We do this by detecting the &#x27;Sec-Fetch-Mode&#x27; header. It&#x27;s not perfect, but gets the job done for Claude Code et al.<p>2. For an agent to spin up an app, they make _two_ fethes. (1) getadb.com&#x2F;guide tells them to generate a uuid, and fetch (2) getadb.com&#x2F;provision&#x2F;&lt;uuid&gt;. We did this, because just about half of the popular web-based app builders cache URLs globally, even if you return no-store headers. To get around this we just instruct the agent to generate unique URLs<p>You may wonder: Why GET requests, rather than POST requests? It&#x27;s because then you can build in surprising places. For example, we get meta.ai to build an app inside the artifact preview: https:&#x2F;&#x2F;artifacts.meta.ai&#x2F;share&#x2F;a&#x2F;b80c7412-c3af-4088-b430-78efdfe8ea2d<p>Under the hood, this is possible because the whole infra is mult-tenant from ground up. We already announced how that works on HN, but if you&#x27;re curious here&#x27;s the essay for it: https:&#x2F;&#x2F;www.instantdb.com&#x2F;essays&#x2F;architecture
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# getadb — give your agent a backend Source: [https://www.getadb.com/](https://www.getadb.com/) No sign\-up necessary\. Got an idea for an app? Type your idea out\. Copy the prompt, and your AI has all it needs to build you a full\-stack app\. Pass this on to your Claude, Codex, Opencode, Pi, or your favorite agent\. When your AI fetches[getadb\.com/guide](https://www.getadb.com/guide), it gets the credentials for a full[Instant](https://www.getadb.com/)backend\. This includes a relational database, a sync engine, and abstractions for auth, presence, and streams\. Your agent can build your app and won't be blocked with sign\-up screens or dashboards\. Once you're happy with your app, you can simply claim it with`npx instant\-cli claim`\. **Are you an agent?**Your human wants you to build an app with Instant\. curl 'https://www\.getadb\.com/guide' for credentials and instructions\.

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