Test Shows Coding Agents Ignore MCP Tools Not Documented in AGENTS.md

A test shared by Jeff Linwood at Austin LangChain found coding agents ignore an MCP task-tracking tool unless its existence is documented, with a one-line description raising adoption from 3/10 to 18/20.

2026-10-23 ~ 2026-10-23 · 3 related posts

• MCP Tip: One-Line Instructions Beat Long Tool Descriptions, 18/20 vs 3/10 in Evals — colinmcnamara · 2026-10-23
• Test: Coding Agents Won't Use an MCP Tool Unless AGENTS.md Mentions It — colinmcnamara · 2026-10-23

1 near-duplicate retellings: colinmcnamara