Field notes
Short, practical notes on coding agents, harnesses and MCP: what changed over the last two years and what you can use today.
2026
- Running Codex and Claude as a two-agent team: what broke, and the rules that fixed it
- Long-running agents need a progress file, not a bigger context window
- The harness is the product
- Coding agents, October 2024 to October 2026: the 20 events that mattered
- ABAP has an official MCP server now. What to expose, and what to keep read-only