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Tools2026-07-22 · source-backed
Stewardship moved to the Agentic AI Foundation under the Linux Foundation, with 30+ tools reading it natively: Claude Code, Copilot, Cursor, Codex, Gemini CLI, Windsurf, Devin, Aider, Amazon Q (BuildBetter). Claude Code reads AGENTS.md in addition to CLAUDE.md, which stays its richer native format. For multi-tool repos: put build/test commands, conventions, and PR rules in AGENTS.md as the portable base, reserve CLAUDE.md for Claude-specific context. One file per tool duplicating the same content is how instruction drift starts, and instruction drift is worse than no instructions because you think you're covered.
Each link below shares sources, entities, or timing with this story.
Claude Code competes with Cursor / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (Claude Code competes with Cursor); both cover CLAUDE, Claude Code, Codex, Copilot; overlapping topics (agent, claude, code, codex).
Linked by a graph relationship (Claude Code competes with Cursor); both cover Aider, Codex, Copilot, Cursor; overlapping topics (agent, aider, codex, instruction).
output uses Claude Code / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (output uses Claude Code); both cover Claude, Claude Code, Codex, Copilot; overlapping topics (agent, claude, code, tool).
Claude Code competes with Cursor / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (Claude Code competes with Cursor); both cover Aider, Claude Code, Codex, Cursor; overlapping topics (claude, code, command, tool).
Anthropic partners with Linux Foundation / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (Anthropic partners with Linux Foundation); both cover Claude, Claude Code, Codex, Cursor; overlapping topics (agent, claude, code, codex).
Claude Code competes with Cursor / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (Claude Code competes with Cursor); both cover Aider, Claude Code, Codex, Cursor; overlapping topics (agent, command, tool).
ruler supports Aider / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (ruler supports Aider); both cover Aider, CLAUDE, Claude Code, Codex; overlapping topics (agent, aider, claude, code, codex).
Anthropic partners with Linux Foundation / Shared entities / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Anthropic partners with Linux Foundation); both cover Agentic AI Foundation, Claude, Cursor, Linux Foundation; overlapping topics (agent, agentic, claude, code, foundation).