What this skill does
Manage the MoltBot A2A Hub — register agents, search the registry, relay messages, and stream responses. Use when working with the A2A agent-to-agent protocol hub deployed at a2a-hub.fly.dev.
A2A Hub is part of the Developer Tools category — developer tools that help your agent write, review, debug, and ship code. You can install it on its own or alongside other developer tools skills from the OpenClaw catalog.
How to install A2A Hub
The easiest path is via the OpenClaw Easy desktop app — one click, no terminal required:
- Download OpenClaw Easy for macOS or Windows (free, one-click installer, ~30 seconds).
- Open the in-app Skills panel.
- Search for
a2a-huband click Install. - The skill activates automatically when an incoming message matches its description.
Install from the command line
If you already run the OpenClaw CLI, add A2A Hub with a single command:
openclaw skills add a2a-hub
This pulls a2a-hub from ClawHub and installs it into ~/.openclaw/skills/a2a-hub/. Restart the OpenClaw gateway afterwards so the new skill is discovered.
How to use A2A Hub
Once installed, A2A Hub activates on its own: when an incoming message on WhatsApp, Telegram, Slack, Discord, Feishu or Line matches the skill's description, your OpenClaw agent loads it and runs the workflow. You can also trigger it explicitly by describing the task in chat. No extra configuration is required after install.
Manual install (advanced)
If you prefer manual installation:
- Click the Download .zip button above to grab
a2a-hub-1.3.0.zipdirectly from our S3 mirror. - Unzip into
~/.openclaw/skills/a2a-hub/(create the directory if it does not exist). - Restart OpenClaw Easy (or the OpenClaw CLI gateway) so the new skill is discovered.
Frequently asked questions
How do I install A2A Hub?
Install A2A Hub in the OpenClaw Easy desktop app by opening the Skills panel, searching for a2a-hub, and clicking Install. From a terminal you can run: openclaw skills add a2a-hub. Either way the skill is placed in ~/.openclaw/skills/a2a-hub/.
Is A2A Hub free?
Yes. A2A Hub is free and open-source, distributed under the Apache-2.0 license through ClawHub. No account or payment is required to download or run it.
What does A2A Hub do?
Manage the MoltBot A2A Hub — register agents, search the registry, relay messages, and stream responses. Use when working with the A2A agent-to-agent protocol hub deployed at a2a-hub.fly.dev.
Related: more developer tools skills
If A2A Hub looks useful, you may also want to check out other developer tools skills in the OpenClaw catalog:
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Free, open-source · Apache-2.0 · Works with Claude, ChatGPT, Gemini, or local Ollama models