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<div style="display: none; max-height: 0px; overflow: hidden;">Harness engineering is becoming a central focus in AI development, allowing AI agents to autonomously optimize their operational frameworks </div>
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<h1><strong> TLDR Dev <span id="date">2026-07-16</span></strong></h1>
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<strong>Workshop: Writing Useful Logs For Production (Sponsor)</strong>
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<li><strong>Structured logging best practices - in practice</strong>: Adding attributes that make logs searchable, connecting logs to traces and errors so you have full answers beyond "something broke."</li>
<li><strong>Reducing the noise firehose</strong>: How to filter logs to focus on what matters and enjoy the silence.</li>
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<strong>A primer on self-improving agent harnesses (9 minute read)</strong>
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Harness engineering is becoming a central focus in AI development, allowing AI agents to autonomously optimize their operational frameworks, referred to as harnesses, which manage execution logic and performance. New frameworks allow agents to analyze execution traces, propose modifications, and validate updates in a structured manner, so developers are shifting from manual adjustments to creating systems that support agent self-improvement.
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<strong>SQLite should have (Rust-style) editions (12 minute read)</strong>
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SQLite is widely used for embedded projects, but it has several problematic defaults that can lead to data integrity issues, such as ignoring foreign key constraints and allowing incorrect data types in columns. Additionally, SQLite's default behavior can lead to errors during concurrent write attempts and suboptimal performance because its Write-Ahead Log is disabled by default. To address these shortcomings while maintaining backward compatibility, implementing an "edition" system could provide updated default settings.
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<strong>Designing APIs for Agents (15 minute read)</strong>
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<strong>Why I Left Google DeepMind (65 minute read)</strong>
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The author resigned from Google DeepMind after their opposition to the company's military AI contracts and proposed ethical oversight measures were ignored.
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<h1><strong>Launches & Tools</strong></h1>
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Inkling is a newly developed Mixture-of-Experts transformer model with 975 billion parameters that supports multimodal capabilities, including text, images, and audio. It is designed to be customizable, enabling users to adapt it for various applications through fine-tuning on a platform called Tinker, which also features a playground for user interaction.
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<strong>Capn-Hook (GitHub Repo)</strong>
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Capn-Hook is a tool designed for coding agents that helps retain memory across sessions by saving and recalling answers to development questions.
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Boop is a personal agent app that integrates with iMessage, allowing users to interact through text, use various integrations, manage memory, and automate tasks using either the Claude Agent SDK or Codex runtime.
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A harness for LLMs should be intuitive, transparent, and flexible while minimizing cognitive load, allowing for self-development and efficient error recovery. It should create a conducive environment for LLMs by using their existing knowledge and capabilities, such as modularity and effective collaboration between tools.
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