Cross-CLI agent mailbox: tmux-injected messaging for Claude Code, Codex, Pi and ZCode
Connect Runs on your machine
claude mcp add a2a-mailbox -- https://github.com/RegretSSS/a2a-mailbox/releases/download/v0.1.0/a2a-mailbox.mcpb
{
"mcpServers": {
"a2a-mailbox": {
"command": "https://github.com/RegretSSS/a2a-mailbox/releases/download/v0.1.0/a2a-mailbox.mcpb",
"args": []
}
}
}
{
"mcpServers": {
"a2a-mailbox": {
"command": "https://github.com/RegretSSS/a2a-mailbox/releases/download/v0.1.0/a2a-mailbox.mcpb",
"args": []
}
}
}
{
"servers": {
"a2a-mailbox": {
"type": "stdio",
"command": "https://github.com/RegretSSS/a2a-mailbox/releases/download/v0.1.0/a2a-mailbox.mcpb",
"args": []
}
}
}
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Details
| Package | https://github.com/RegretSSS/a2a-mailbox/releases/download/v0.1.0/a2a-mailbox.mcpb (MCPB, stdio) |
| First published | 5 Nov 2026 |
| Last updated | 5 Nov 2026 |
| Registry name | io.github.RegretSSS/a2a-mailbox |
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