Blog 385 posts

Notes from the trenches on AI engineering, LLM apps, and the full-stack work that holds it all together.

Codex ran nine hours after the usage limit hit. Long-horizon agents need quota design, not hope
5 min read

Codex ran nine hours after the usage…

AlphaSignal flagged an OpenAI Codex run that finished a nine-hour coding task after exhausting its usage limit, using banked resets and active-turn continuation. Here is how to plan autonomous agent sessions without losing momentum.

Self-Harness: how agents rewrite their own operating rules without retraining
5 min read

Self-Harness: how agents rewrite their own operating…

Shanghai AI Lab's Self-Harness lets a fixed model improve its own agent scaffolding through weakness mining, targeted edits, and regression gates. Here is what the Terminal-Bench numbers mean and how to run a lightweight version today.

AI agent credentials belong in a vault, not a .env file on someone's laptop
6 min read

AI agent credentials belong in a vault,…

Twelve million servers leak .env files to the open web. When you give an agent Gmail, CRM, and Slack access, local plaintext tokens turn a config mistake into a company-wide breach.