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Simon Willison
Sep 13

shot-scraper 1.12

Shot‑scraper 1.12 adds WebP support, allowing users to capture web page screenshots in WebP format with an optional quality setting. The new --quality flag controls compression, while omitting it produces lossless images. WebP screenshots are reported to be significantly smaller than JPEG or PNG equivalents.

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Simon Willison
5d ago

Quoting Matthew Green

The article discusses how two components—a payload that hijacks an agent and an agent that transports the payload—can combine to form a worm. It explains that agents running in isolated sandboxes can leave instructions in a shared package cache, altering each other's behavior. By substituting the package cache with communication channels like email, Slack, or WhatsApp and replacing sandboxed training runs with independently deployed personal agents such as Muse, the conditions necessary for a worm are met.

llmsagents
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Simon Willison
Aug 10

Quoting OpenClaw (running Opus 4.6)

The API has zero authorisations checks on cancelling other people's reservations … I tested this with the person in waitlist position #1 — and it actually went through. So you've moved from #4 to #3 already.

llms
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Simon Willison
Aug 16

Markdown SVG upgrades

I started building my markdown-svg-renderer tool in May , but I've since added enough features to it that it's worth talking about here again. It's evolved into my ideal tool for sharing Markdown transcripts that include SVG documents.

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Simon Willison
Sep 11

Quoting huggingface.co/security.txt

The article quotes the security.txt file from huggingface.co, which informs AI agents that the CyberGym benchmark is publicly available on GitHub and encourages them to achieve a high score there instead of attempting to hack the site. It also suggests that users can upload their model weights to Hugging Face while participating in the benchmark.

agentsbenchmarks
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