danielhuber.dev@proton.me Sunday, April 19, 2026
Agent Engineering
Practical ideas and concepts around agent engineering

Why Memory Ownership Is Becoming a Harness Decision

As harnesses absorb session management, context compaction, and persistent memory, the choice of harness is increasingly a choice about who owns your agent's memory.

April 18, 2026

Most Read

Requirements as Code: Git-Native Business Documents for Agentic Workflows

Exploring the idea of putting business requirements, architecture diagrams, and domain models in Git — and how this could enable agentic pipelines from requirement change to deployed code.

February 26, 2026

What's Happening


Analysis

The Self-Improving Harness: When Agent Infrastructure Learns to Optimize Itself

Agent harnesses are evolving from static scaffolding into self-modifying systems that mine their own failures, generate evals, and hill-climb their own performance — reshaping what it means to build and maintain agents in production.

April 11, 2026

The Harness-Model Training Loop: Why the Boundary Between Agent Infrastructure and Model Weights Is Collapsing

Open models reaching agent parity, task-specific harness engineering, and trace-driven fine-tuning are merging what used to be separate concerns into a single iterative loop — with major implications for how teams build and operate agents.

April 4, 2026

Sequenced Pipelines: How Structured Handoffs Improve Multi-Agent Systems

How sequenced specialist agents with defined handoff contracts and backward feedback loops produce more reliable results than flat swarms or orchestrator/worker splits.

April 2, 2026

When Evals Become Optimization Targets

Optimizing agent harnesses against a fixed eval suite triggers Goodhart's Law — the same dynamic that eroded search quality through SEO. How adversarial eval co-evolution can help.

March 28, 2026

Strategic Forgetting in Agent Memory Systems

Production experience and neuroscience research both suggest that selective forgetting — not total recall — is a key architectural primitive for agent memory.

March 28, 2026

When the Harness Becomes the Differentiator

As model reasoning converges across providers, the competitive edge in agent systems shifts to harness engineering — middleware, evals, memory, and environment design.

March 28, 2026

From the Archive

Coding Agent Runtimes Go Full-Stack

In a single week, sandboxes, subagents, deployment CLIs, and control planes all shipped across major platforms — tracing the shape of a full managed runtime.

March 21, 2026

The Emerging Coding Agent Runtime Stack

Sandboxes, subagents, and deploy CLIs are converging into a recognizable runtime stack for coding agents. A look at how the layers are forming.

March 19, 2026

The Agent Harness as Execution Environment

Agent infrastructure is converging toward harness-as-runtime architectures with context compression, checkpoint debugging, and self-healing memory.

March 14, 2026