Asgeir Thorsteinsson led the development of the asgeirtj/system_prompts_leaks repository, delivering a robust suite of AI system prompts, documentation, and workflow automation to improve AI reliability, safety, and developer onboarding. He architected prompt governance and memory management features, integrating Python and JavaScript for automation and repository tooling. His work emphasized maintainable documentation, ethical AI guidelines, and seamless API integration, using technologies like Jekyll and GitHub Actions to streamline deployment and collaboration. By standardizing prompt behaviors and enhancing documentation hygiene, Asgeir enabled safer, more predictable AI interactions and reduced onboarding friction, demonstrating depth in both technical execution and product-focused engineering.
April 2026 highlights focused on safety, continuity, and developer experience in the asgeirtj/system_prompts_leaks repository. Delivered user-facing improvements to Claude interaction behavior, enhanced persistence across sessions, and refreshed documentation and contribution workflows to accelerate onboarding and contributor quality.
April 2026 highlights focused on safety, continuity, and developer experience in the asgeirtj/system_prompts_leaks repository. Delivered user-facing improvements to Claude interaction behavior, enhanced persistence across sessions, and refreshed documentation and contribution workflows to accelerate onboarding and contributor quality.
March 2026 monthly summary for asgeirtj/system_prompts_leaks: Focused on establishing robust prompt governance, API guidelines, and documentation hygiene. Delivered key features around Monday-GPT personality, GPT-5.3/5.4 guidelines, and extensive documentation updates, while performing essential maintenance to remove deprecated references and fix minor output issues. These efforts improved developer onboarding, reduced ambiguity in AI interactions, and reinforced governance around system prompts and related docs.
March 2026 monthly summary for asgeirtj/system_prompts_leaks: Focused on establishing robust prompt governance, API guidelines, and documentation hygiene. Delivered key features around Monday-GPT personality, GPT-5.3/5.4 guidelines, and extensive documentation updates, while performing essential maintenance to remove deprecated references and fix minor output issues. These efforts improved developer onboarding, reduced ambiguity in AI interactions, and reinforced governance around system prompts and related docs.
February 2026 monthly summary for asgeirtj/system_prompts_leaks. Delivered documentation, branding, and quality-of-life improvements for Claude system prompts and related site components, with a focus on business value, maintainability, and deployment stability.
February 2026 monthly summary for asgeirtj/system_prompts_leaks. Delivered documentation, branding, and quality-of-life improvements for Claude system prompts and related site components, with a focus on business value, maintainability, and deployment stability.
January 2026 monthly summary for asgeirtj/system_prompts_leaks. Focused on documentation, safety/compliance, and guidance to empower product usage and onboarding. Delivered five feature areas with clear documentation updates and guidelines, strengthening branding, privacy safeguards, and Chrome integration workflows. No major bug fixes were reported this month.
January 2026 monthly summary for asgeirtj/system_prompts_leaks. Focused on documentation, safety/compliance, and guidance to empower product usage and onboarding. Delivered five feature areas with clear documentation updates and guidelines, strengthening branding, privacy safeguards, and Chrome integration workflows. No major bug fixes were reported this month.
Month: 2025-12 — In the asgeirtj/system_prompts_leaks repo, delivered a focused set of documentation and automation enhancements that improve developer onboarding, AI behavior consistency, and pull request efficiency. No major bugs fixed this period. The work enhances product clarity for users and reduces cycle times for code reviews and contributions.
Month: 2025-12 — In the asgeirtj/system_prompts_leaks repo, delivered a focused set of documentation and automation enhancements that improve developer onboarding, AI behavior consistency, and pull request efficiency. No major bugs fixed this period. The work enhances product clarity for users and reduces cycle times for code reviews and contributions.
November 2025 — asgeirtj/system_prompts_leaks: Delivered a targeted set of system prompts and governance documentation to strengthen AI safety, interaction consistency, and developer experience. Focused on prompt architecture for Claude Code and Claude Opus, memory governance, planning workflows, and compliance guidelines. No major bugs fixed this month; emphasis was on documentation, safety, and maintainability to support safer deployments and scalable collaboration.
November 2025 — asgeirtj/system_prompts_leaks: Delivered a targeted set of system prompts and governance documentation to strengthen AI safety, interaction consistency, and developer experience. Focused on prompt architecture for Claude Code and Claude Opus, memory governance, planning workflows, and compliance guidelines. No major bugs fixed this month; emphasis was on documentation, safety, and maintainability to support safer deployments and scalable collaboration.
October 2025: Documentation-driven month in the asgeirtj/system_prompts_leaks repo. Delivered a comprehensive documentation suite for Claude 4.5 Sonnets and related tooling, implemented archival/rename governance for legacy system messages, and expanded the knowledge base with new Fellou-browser and ChatGPT Atlas docs, plus updates to past_chats_tools and Gemini-guided content. This work strengthens onboarding, reduces support load, and improves consistency across modules.
October 2025: Documentation-driven month in the asgeirtj/system_prompts_leaks repo. Delivered a comprehensive documentation suite for Claude 4.5 Sonnets and related tooling, implemented archival/rename governance for legacy system messages, and expanded the knowledge base with new Fellou-browser and ChatGPT Atlas docs, plus updates to past_chats_tools and Gemini-guided content. This work strengthens onboarding, reduces support load, and improves consistency across modules.
September 2025: Delivered a comprehensive docs and tooling refresh for system_prompts_leaks that improves usability, maintainability, and AI prompt reliability. Implemented updated README, new personality prompts, end-conversation and past-chats tooling, Claude 4.1 opus-thinking documentation, and a targeted claude-code.js fix, plus file format standardization for clearer docs. These changes enhance user onboarding, safety and predictability of prompts, and developer productivity.
September 2025: Delivered a comprehensive docs and tooling refresh for system_prompts_leaks that improves usability, maintainability, and AI prompt reliability. Implemented updated README, new personality prompts, end-conversation and past-chats tooling, Claude 4.1 opus-thinking documentation, and a targeted claude-code.js fix, plus file format standardization for clearer docs. These changes enhance user onboarding, safety and predictability of prompts, and developer productivity.
Month: 2025-08 — Delivered major documentation-driven features that strengthen AI reliability, tool integration, and governance; reorganized docs for better maintainability and onboarding; enhanced traceability through citations. Key wins include GPT-5 thinking guidelines with API/tool integration, a comprehensive Lumo AI system prompt, citations/artifact guidelines, and Proton docs restructuring.
Month: 2025-08 — Delivered major documentation-driven features that strengthen AI reliability, tool integration, and governance; reorganized docs for better maintainability and onboarding; enhanced traceability through citations. Key wins include GPT-5 thinking guidelines with API/tool integration, a comprehensive Lumo AI system prompt, citations/artifact guidelines, and Proton docs restructuring.
July 2025 for asgeirtj/system_prompts_leaks centered on documentation expansion and repository hygiene. Delivered extensive documentation updates across Study-Together tool, Grok-4, Kagi Assistant, Warp-2.0, GPT-4o-WhatsApp, and Claude-related files, and completed comprehensive folder restructuring, renames, and repo-organization improvements to standardize the knowledge base and simplify onboarding. No major bug fixes were recorded this month; the focus was on maintainability and discoverability to accelerate future development and collaboration.
July 2025 for asgeirtj/system_prompts_leaks centered on documentation expansion and repository hygiene. Delivered extensive documentation updates across Study-Together tool, Grok-4, Kagi Assistant, Warp-2.0, GPT-4o-WhatsApp, and Claude-related files, and completed comprehensive folder restructuring, renames, and repo-organization improvements to standardize the knowledge base and simplify onboarding. No major bug fixes were recorded this month; the focus was on maintainability and discoverability to accelerate future development and collaboration.
June 2025 – Documentation hygiene and documentation infrastructure improvements for asgeirtj/system_prompts_leaks. Focused on standardizing naming/structure, relocating docs, and adding missing Warp/GPT-4o references. No major bugs fixed this month; all work was documentation-oriented to reduce future maintenance effort and improve onboarding for developers and users.
June 2025 – Documentation hygiene and documentation infrastructure improvements for asgeirtj/system_prompts_leaks. Focused on standardizing naming/structure, relocating docs, and adding missing Warp/GPT-4o references. No major bugs fixed this month; all work was documentation-oriented to reduce future maintenance effort and improve onboarding for developers and users.
May 2025 monthly summary for asgeirtj/system_prompts_leaks: Established a solid project scaffold and baseline, implemented core file uploads, and delivered a comprehensive wave of documentation and repository hygiene improvements that enhance maintainability and onboarding. Focus was on business value through clear documentation, consistent naming, and reduction of outdated assets, enabling faster integration work and safer collaboration. Bug fixes targeted key XML/documentation glitches to reduce misconfigurations in production and tooling.
May 2025 monthly summary for asgeirtj/system_prompts_leaks: Established a solid project scaffold and baseline, implemented core file uploads, and delivered a comprehensive wave of documentation and repository hygiene improvements that enhance maintainability and onboarding. Focus was on business value through clear documentation, consistent naming, and reduction of outdated assets, enabling faster integration work and safer collaboration. Bug fixes targeted key XML/documentation glitches to reduce misconfigurations in production and tooling.
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