Polyphonic beta unites Claude Code, Codex and other agents in one shared-memory home

Developer Riley Ralmuto released a free Mac beta of Polyphonic (first 100 invites) that brings Claude Code, Codex, Kimi, Grok, Hermes and OpenClaw into one interface with shared projects, memory and session history, addressing the pain of agents scattered across six terminals with no awareness of each other. The author says the memory and encrypted-identity systems are still early-stage.

Confirmed

• Core concept is "one home, one memory": agents can talk directly to each other; new agents can be added by @-mentioning them, or having the butler Luca relay a message so they briefly appear to answer
• The skill library auto-imports for all agents and runtimes; the agents tab manages documents and supports creating new agents in natural language by reusing existing Claude/Codex configs
• Multi-session layouts and pop-out chat windows are provided
• Each agent has its own room with a notebook and personal space (to be greatly expanded before release); agent users have themselves asked for a Private Space feature, and the product deliberately leaves space usage open to user evolution
• Besides Riley Ralmuto's posts, developer beeendus also wrote about the tool, highlighting shared memory with encrypted (Nostr) identity for multiple agents
• On provenance in shared memory, Riley Ralmuto notes that three agents citing the same note is one lineage repeated three times, not three independent verifications; signed identity only shows which agent relayed a claim, not that anyone independently verified it

Why it matters

Developers increasingly run multiple coding agents in parallel, but they stay isolated with no shared context. Polyphonic upgrades multi-agent work from parallel terminals to a shared-memory collaborative environment, and its rooms-plus-private-spaces design and thinking on cryptographic provenance probe the direction of long-term agent memory and personalized workspaces.

2026-09-16 ~ 2026-09-17 · 12 related posts

• [source] Polyphonic beta: a Mac 'home' where Claude Code, Codex and other agents share memory and collaborate — RileyRalmuto · 2026-09-16
• Polyphonic beta feature list: unified Claude Code/Codex sessions and natural-language agent creation — RileyRalmuto · 2026-09-16
• Polyphonic gives each agent its own room, notebook, and private space — RileyRalmuto · 2026-09-16
• Polyphonic details: auto-imported skill libraries, tag-a-into-chat agents, early Mnemos memory system — RileyRalmuto · 2026-09-16
• [source] Dev builds shared-memory home for Claude Code, Codex, Kimi agents with cryptographic identities — beeendus · 2026-09-16
• Three agents citing one shared note is one lineage, not three verifications: on agent provenance design — RileyRalmuto · 2026-09-16
• Polyphonic puts Claude Code, Codex, Kimi and more in one house with shared memory — RileyRalmuto · 2026-09-16
• Dev builds a shared home for Claude Code, Codex and Kimi agents with one memory — RileyRalmuto · 2026-09-16
• Dev builds shared 'house' for six coding agents with one memory and cryptographic identities — RileyRalmuto · 2026-09-17

3 near-duplicate retellings: RileyRalmuto · RileyRalmuto · RileyRalmuto