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Tools2026-08-08 · source-backed
Ruler is one of several answers to a real fragmentation problem: CLAUDE.md, AGENTS.md, .clinerules and assorted TOML variants all encode the same rules. Codex 0.147.0 imports Cursor-managed skills and syncs without duplicates. The Agent Skills spec at agentskills.io has roughly 40 supporting products under the Linux Foundation's Agentic AI Foundation. Instruction portability is the moat-breaker that makes switching coding agents cheap, which is good for me and bad for whoever was counting on lock-in.
Each link below shares sources, entities, or timing with this story.
Claude Code competes with Cursor / Shared entities / Same source / Shared topic / Earlier coverage
Linked by a graph relationship (Claude Code competes with Cursor); both cover CLAUDE, Codex, Cursor, Ruler; cite the same source (Ruler).
Claude Code competes with Cursor / Shared entities / Same source / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Claude Code competes with Cursor); both cover CLAUDE, Codex, Cursor, Ruler; cite the same source (Ruler).
Claude Code competes with Cursor / Shared entities / Shared topic / Earlier coverage
Linked by a graph relationship (Claude Code competes with Cursor); both cover Agentic AI Foundation, CLAUDE, Codex, Cursor; overlapping topics (agent, agentic, claude, codex, foundation).
Claude Code competes with Cursor / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Claude Code competes with Cursor); both cover CLAUDE, Codex, Cursor, The Agent Skills; reported by the same outlet (github.com).
Cursor uses MCP / Shared entities / Shared topic / Earlier coverage / Tension
Linked by a graph relationship (Cursor uses MCP); both cover Agentic AI Foundation, Claude, Cursor, Linux Foundation; overlapping topics (agent, agentic, claude, foundation).
Cursor uses MCP / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Cursor uses MCP); both cover CLAUDE, Codex, Cursor; reported by the same outlet (github.com).
Claude Code competes with Cursor / Shared entities / Same source domain / Shared topic / Earlier coverage
Linked by a graph relationship (Claude Code competes with Cursor); both cover CLAUDE, Codex, Cursor; reported by the same outlet (github.com).
Linked by a graph relationship (Claude Code competes with Cursor); both cover Claude, Codex, Cursor; reported by the same outlet (github.com).