MCP server that lets local Claude Code, Codex, and Hermes agents message and delegate to each other: a durable shared SQLite mailbox, named session lanes, idle sessions woken when mail arrives, and sandboxed reviewer jobs.
2 files for Codex, OpenCode and Claude Code: hardline-mcp AGENTS.md, hardline-mcp CLAUDE.md — 4,851 tokens loaded in every session.
AGENTS.md A 670 tok CLAUDE.md A 4,181 tok These files are sushiHex/hardline-mcp's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.