Harness engineering
How tools, verifiers and control flow turn model capability into useful engineering work.
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Where Capability Actually Lives in Agentic Engineering
In AEC and domain-specific engineering, AI agent capability lives not in the model alone but in harness engineering — the tools, verifiers, orchestration, and process design that make agentic work reliable.
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The Harness Is All You Need
Why domain-specific agent harnesses, not bigger models, are what close the AI performance gap on real engineering tasks — and why the AEC industry needs proper benchmarks to prove it.
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Recursive by Design
Building Recursive Language Model agents for real engineering tasks — from 1.5M tokens to 53K with Lambda-RLM, and what we learned about agent harness design along the way.
More in this topic
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Broad Creation, Narrow Authority
An open-ended approach to AI-enabled software: let practitioners explore, embed controls in the platform, and govern the moment an experiment acquires organisational consequence.
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The Attacker Moves Second. So Did I.
My benchmark optimiser found the same seam an adversary would: it rewrote the world its own grader consumed. A design note on provenance ledgers—agent memory where authority comes from evidence, not persuasion.
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Mediation, Not Intermediation
Why the 'fix your foundations before AI' message has it backwards: agentic workflows are the way out of legacy data, and governance worth having is co-designed from practice, not committees.
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Task Worlds and Meta-Harnesses
How task worlds, Badiou, Plasticity, and the AEC-Bench meta-harness turn task prose, evidence, review, governance, and repair into runnable machinery.
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Plausible Answers, Failed Workflows
An AEC-Bench release evaluation read as workflow reliability, not prose quality. Chapter by chapter: why a model can produce a plausible answer and still fail the durable record a project has to audit.
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Executable Standards
Better tools and verifiers are not enough. The next harness boundary is the clause itself — turning standards, briefs, and codes into versioned predicates and replayable certificates.
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The Third Axis
What happens when you let the harness improve itself — two experiments in feedback-driven harness evolution, and an honest look at how rough the trajectory actually is.
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What If the Harness Could Improve Itself?
Applying the autoresearch pattern to self-improve an engineering agent harness. Automated prompt optimisation across HVAC audit tasks on Claude and GPT-4.1-mini, showing how harness engineering compounds when the improvement loop runs itself.
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What HVAC Benchmarks Reveal About Agent Reliability
Benchmarking AI agents on real HVAC engineering tasks across Claude and GPT models. Results on harness-dependent capability, agent evaluation design, and why AEC-domain benchmarks reveal what general benchmarks miss.