Message other Claude sessions by name, and spawn/coordinate detached background Claude agents. Use when the user asks to talk to another Claude, have two sessions message each other, delegate work to a worker/sub agent, run several Claudes in parallel, build a team of agents, or check on / reply to a running agent. Register a name, then send and receive messages by name; incoming messages are delivered to you automatically.
EnglishRegister / name THIS Claude session so it can be messaged by other Claude sessions and agents. Use when the user asks to join cortex, enable messaging, "make this session reachable", "name this agent", call this session , register as , or responds to the cortex opt-in prompt. Required before this session can send or receive cortex messages.
EnglishShow who is online in the cortex mesh — which Claude sessions/agents are registered and reachable right now. Use when the user asks who is online, who is available, who can I message, which agents/sessions are running, show the roster, is online/up, or anything about the cortex participant list.
English
AGENT SKILLS ATLASIncludes Cortex Message, Cortex Register, and Cortex Who.
Claude Code
Codex
Cursor
GitHub Copilot
Gemini CLISupported by the Atlas install prompt. Skill-specific requirements vary.
Pack stats
What’s included
Cortex Message
Message other Claude sessions by name, and spawn/coordinate detached background Claude agents. Use when the user asks to talk to another Claude, have two sessions message each other, delegate work to a worker/sub agent, run several Claudes in parallel, build a team of agents, or check on / reply to a running agent. Register a name, then send and receive messages by name; incoming messages are delivered to you automatically.
Cortex Register
Register / name THIS Claude session so it can be messaged by other Claude sessions and agents. Use when the user asks to join cortex, enable messaging, "make this session reachable", "name this agent", call this session , register as , or responds to the cortex opt-in prompt. Required before this session can send or receive cortex messages.
Cortex Who
Show who is online in the cortex mesh — which Claude sessions/agents are registered and reachable right now. Use when the user asks who is online, who is available, who can I message, which agents/sessions are running, show the roster, is online/up, or anything about the cortex participant list.
Quick start
- Choose your skills. Select individual skills above, or choose the entire pack.
- Copy the install prompt. Use Copy install prompt above the list.
- Send it to your agent. Paste into your coding agent’s chat. Your agent reviews the source and guides the setup.
Try it with your agent
After installation, start with a request like:
Use the Cortex Message skill to help with my task.
Ask me for the context you need before getting started.Requirements & license
- A coding agent that can access your project files and install skills.
- Your agent checks each skill’s instructions, dependencies, and permissions during setup.
- License details are not provided in these listings. Check the author’s terms before using the skills.