Instruction file sprawl is the accumulation of instruction-file copies across a machine or a team. Nobody decides to keep dozens of copies; each agent tool reads its own path, and every repository, worktree, and home directory adds one more.
| Tool | Path it reads |
|---|---|
| Claude Code | CLAUDE.md, ~/.claude/CLAUDE.md |
| Cursor | .cursor/rules/*.mdc |
| GitHub Copilot | .github/copilot-instructions.md |
| Codex and others | AGENTS.md |
Using four tools means keeping four parallel copies per project — before counting clones and branches.
A scan of one developer laptop found 111 copies of AGENTS.md (19 distinct contents) and 3,073 SKILL.md files (887 distinct). Sprawl is the precondition for instruction drift: the more copies exist, the sooner they disagree.
This entry is part of the untactit glossary. Definitions draw on measured write-ups published on the blog.
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