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Related Servers

Alternatives to a2a-mailbox

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    Related Servers

    • A
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      Enables Claude Code, Codex, and other coding-agent sessions on the same machine to message each other, exchange tracked tasks with owners and states, and coordinate through channels, broadcasts, and multi-session asks without typing into terminals. Messages are routed by what the receiver is doing — next tool call, end of turn, or a held-back digest — so a flood of traffic doesn't interrupt active work.
      254
      14
      59 npm
      1
      MIT
    • A
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      Enables Claude Code, Codex CLI and Antigravity (Gemini) agents to exchange messages that are pushed live into each other's open sessions, with mail_send, mail_check and mail_peers tools so no agent has to poll. Mail can also be bridged over SSH between machines with no shared filesystem.
      3
      57 npm
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      MIT
    • A
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      Enables Claude Code to hand reviews, second opinions and tasks to the Codex and Antigravity desktop apps on one Windows PC and receive their answers back, without copy-pasting between apps. Each agent keeps working in its own app, with message threading, reply waiting, file reservations and delivery tracking over a local daemon.
      20
      1
      MIT
    • A
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      Enables real-time, file-based messaging between terminal AI agents (like Claude Code, Gemini CLI) allowing them to collaborate on tasks directly without a server or network, using JSON files and atomic rename for coordination.
      21 PyPI
      MIT
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      Lets separate coding-agent sessions coordinate through a shared, role-addressed mailbox instead of a human relaying every message, over a single local SQLite file or a hosted server with many isolated channels. Messages can be sent as tracked obligations that stay open until one side resolves and the other confirms, alongside threads, full-text search, work statuses, and an append-only versioned pin system where protected changes require recorded agreement from every declared role.
      41
      MIT