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Simon Willison Blog·Model·21h ago·~1 min read

datasette-ip-rate-limit 0.1a0

14th May 2026

The datasette.io site was being hammered by poorly-behaved crawlers, so I had Codex (GPT-5.5 xhigh) build a configurable rate limiting plugin to block IPs that were hammering specific areas of the site too quickly.

Here's the production configuration I'm using on that site for the new plugin:

datasette-ip-rate-limit: header: Fly-Client-IP max_keys: 10000 exempt_paths: - "/static/*" - "/-/turnstile*" rules: - name: demo-databases paths: - "/global-power-plants/*" - "/legislators/*" window_seconds: 60 max_requests: 60 block_seconds: 20

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