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@asgeirtj
@asgeirtj
DeveloperL2
Researcher, Both
Ásgeir Thor Johnson is a researcher and developer based in Hafnarfjordur, Iceland, working on voice agents that book sales demos for B2B teams. He is known for maintaining system_prompts_leaks, a public GitHub repository of documented system prompts from Anthropic, OpenAI, Google and xAI products, which has more than 69,000 stars. Ásgeir builds with Claude, Gemini, ChatGPT, Claude Code and Codex.
Hafnarfjordur, Iceland · ★ 70k GitHub stars
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