New paper defines four conditions that turn an LLM into a coding agent
alex_verem · x · 2026-07-22
A new paper argues that a language model becomes a coding agent only when a harness provides four things: a runtime loop that interleaves reasoning, action, and observation; a tool interface to act on the environment; active context management; and execution-state tracking.
The paper traces the term harness back to the horse-tack metaphor and claims the agent is not the model itself but the surrounding infrastructure that connects, controls, and measures it. The screenshot shows the paper’s abstract framing this as a formal definition of agent harnesses for software engineering.
More from coding & agent
- GPT-6 Astra beats Factorio with enemies in 44 in-game hours at ~$4,500 API cost — liminal_bardo · 2026-09-11
- Investment Analyst Asks How to Build a Claude-Based Diligence Agent Stack — Careless_Tie2286 · 2026-09-11
- How Do You Catch Behavioral Regressions in LLM Agents Between Releases? — Beautiful_Belt_601 · 2026-09-11
- Treating agents like 50 First Dates: a 3-layer context system so every conversation doesn't start from zero — evielync · 2026-09-11
- Running the Firefox MCP on Android via Termux, ngrok, and mcp-proxy — Nervous-Strain7544 · 2026-09-11
- Run Firefox MCP on Android: Termux + ngrok tunnel tutorial — Nervous-Strain7544 · 2026-09-11