# WhatsApp Agent Platform: Hermes Agent plugin

> Community platform plugin (not affiliated with Meta or Nous Research) connecting a WhatsApp Agent to Hermes through Meta's WhatsApp Agent Platform API (/agent/v1): long-poll inbound (no public URL), text and media.

Canonical: https://hermeswatcher.com/plugins/whatsapp-agent-platform  
Tier: Community  
Official page (Nous Research): https://hermes-agent.nousresearch.com/docs/plugins/whatsapp-agent-platform  
Last updated in catalog: 2026-10-02

Community platform plugin (not affiliated with Meta or Nous Research) connecting a WhatsApp Agent to Hermes through Meta's WhatsApp Agent Platform API (/agent/v1): long-poll inbound (no public URL), text and media.

## Good to know before installing

Sends the API key and message content, files included, only to Meta: api.whatsapp.com, plus lookaside.fbsbx.com for downloads (per WhatsApp's Third-Party Agents Terms, agent chats are not end-to-end encrypted); stores the poll cursor, recent message ids and the creator's id under HERMES_HOME; no other network egress, no telemetry, no self-update. Exception: Hermes fetches image URLs in replies (SSRF-guarded, no key), revealing the server's IP to that host. Files go only to the creator; Meta keeps uploads up to 30 days. Received files are cached under HERMES_HOME (deleted after ~24 h while the gateway runs) and may reach the configured model, vision or speech-to-text provider. WHATSAPP_AGENT_PLATFORM_MEDIA_ENABLED=false disables media. By default only the agent's creator (verified through Meta's API) can message Hermes; WHATSAPP_AGENT_PLATFORM_ALLOWED_USERS or WHATSAPP_AGENT_PLATFORM_ALLOW_ALL_USERS widens that explicitly. The agent API key is saved to the Hermes .env; the state file under HERMES_HOME is 0600 and never contains the key.

From the plugin's catalog listing.

## How to install

1. Install it. Hermes asks for any API keys it needs (this one needs `WHATSAPP_AGENT_PLATFORM_API_KEY`), then asks whether to turn it on.

```bash
hermes plugins install whatsapp-agent-platform
```

2. Said no? Turn it on later:

```bash
hermes plugins enable whatsapp-agent-platform
```

3. Restart Hermes so it loads the plugin.

Some plugins also need a sign-in or settings: see the official page. Memory plugins ask whether to become your memory provider instead. Steps follow the official plugins guide: https://hermes-agent.nousresearch.com/docs/user-guide/features/plugins

## Facts

- Category: Chat apps & voice
- Maintained by: ahtishamdilawar (Community)
- Needs: `WHATSAPP_AGENT_PLATFORM_API_KEY` (API key)
- Requires Hermes: `>=0.21.4`
- Version: 0.2.0
- In the catalog since: 2026-09-26, updated 2026-10-02

## Links

- [Full setup and settings (official page)](https://hermes-agent.nousresearch.com/docs/plugins/whatsapp-agent-platform)
- [Source code](https://github.com/ahtishamdilawar/hermes-whatsapp-agent-platform/blob/4d8fc1c482ed06a34b6609b1dcdf59e370de7d40/README.md)
- [All plugins](https://hermeswatcher.com/plugins.md)

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HermesWatcher is an independent guide. It is not affiliated with or endorsed by Nous Research. The [official Hermes Agent documentation](https://hermes-agent.nousresearch.com/docs) and [repository](https://github.com/NousResearch/hermes-agent) from Nous Research are the authority; each page here lists the official sources it was written from. If this site and the official docs disagree, trust the official docs. Index for agents: https://hermeswatcher.com/llms.txt