ByteRover CLI (brv) - The portable memory layer for autonomous coding agents (formerly Cipher)

Portable project memory across Claude Code, Codex and OpenCode, plus token accounting measured from harness transcripts. Local file I/O, no API calls, no telemetry.

OKF (Open Knowledge Format): Durable, structured memory for AI agents. Author, validate, consume, and maintain portable knowledge bundles through an ecosystem of Skills, MCP, an interactive graph, TUI, CLI, Docker, and a Claude Code plugin. 100% local.

Artifact layer for agent-human representations. One API call, one SVG. Zero dependencies, renders in any markdown.