How to connect Unione to Hermes Agent
Connect Unione to Hermes with ClawLink: paste your Unione key once and 32 tools work from chat. No MCP server to run, nothing stored on your machine.
UnioneAPI KEYMCPUniOne is an email delivery service offering a versatile Web API and SMTP API for sending transactional and marketing emails.. Once connected, Hermes Agent can read and act on Unione from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent Unione access start with registering your own OAuth app or pasting API keys into env files, then leave the token refresh and tool wiring to you. ClawLink gives Hermes a more practical Unione setup: pair once in the browser and your always-on Hermes agent can act on Unione for you, reading and doing real work on your behalf with no auth, token refresh, or tool wiring to build yourself.
Setup
It takes three steps to connect Hermes to Unione.
1Install and pair
Install the ClawLink plugin, then pair Hermes with a one-time browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable- 2
Connect Unione
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with Unione?"
Install by command
The prompt above walks Hermes through this. By hand, it is four commands and a browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable
hermes clawlink begin # prints an approval link — open it and approve
hermes clawlink finish # after approving in the browser
hermes clawlink testThen connect Unione in the ClawLink dashboard — paste your Unione API key once.
Verify the connection by asking Hermes:
Use Unione to email balance and walk me through the result in plain English.
Using a different agent?
The Hermes plugin is one client of ClawLink's MCP server. Claude Code, Cursor, Codex, or any agent that can run a shell command pairs with the same ClawLink account through the CLI:
npx -y @useclawlink/cli loginlogin opens the same browser approval and stores a credential locally. Once Unione is connected in the dashboard, that agent calls the same 32 Unione tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
Unione MCP for Hermes
Looking for a Unione MCP server for Hermes Agent? ClawLink connects Unione to Hermes Agent and exposes 32 Unione tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw Unione integration works the same way.
What the Hermes Agent Unione integration can do
32 Unione tools are ready for Hermes Agent once the account is connected. The 27 below are the ones people reach for most; your agent can call all 32.
27 of 32 Unione tools for Hermes
| Tool | What it does |
|---|---|
Email balance unione_email_balance | Retrieve current account balance |
Email event get unione_email_event_get | Retrieve details of a specific email event by its ID |
Email get unione_email_get | Retrieve detailed information about a specific email send job |
Email list unione_email_list | Export email events within a specified time frame |
Email smtp unione_email_smtp | Retrieve SMTP server details and credentials |
Email statistics unione_email_statistics | Retrieve email sending statistics over a specified time range |
Email validate batch unione_email_validate_batch | Validate multiple email addresses in a batch |
Email webhook types unione_email_webhook_types | Retrieve supported email webhook event types |
Event dump create unione_event_dump_create | Create an asynchronous CSV event dump |
Event dump list unione_event_dump_list | Retrieve the full list of event dumps |
Get event dump unione_get_event_dump | Retrieve the status and download URLs of an event dump |
Get suppression unione_get_suppression | Check if an email is suppressed and retrieve the reason and date |
Get template unione_get_template | Get template properties by ID |
Get webhook unione_get_webhook | Retrieve webhook configuration by its URL |
Suppression list unione_suppression_list | Return the suppression list since a given date |
Tag list unione_tag_list | Retrieve all user-defined tags |
Template list unione_template_list | List email templates |
Email resend unione_email_resend | Resend a previously sent email by its job ID |
Email resubscribe unione_email_resubscribe | Resubscribe a recipient who previously unsubscribed |
Email resume unione_email_resume | Resume a paused transactional email by its job ID |
Email validate retry unione_email_validate_retry | Retry an email validation request |
Schedule email unione_schedule_email | Schedule a transactional email up to 24 hours ahead |
Template set unione_template_set | Set or update an email template |
Webhook set unione_webhook_set | Set or edit a webhook event notification handler |
Email cancel unione_email_cancel | Cancel a scheduled transactional email by its job ID |
Email domain unione_email_domain | Manage sender domains in UniOne |
Email unsubscribe unione_email_unsubscribe | Unsubscribe an email from future emails |
Try it: find the Unione tool you need
Browse the 27 Unione tools
Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.
Example prompts
Use Unione to email balance and walk me through the result in plain English.
Use Unione to email event get and walk me through the result in plain English.
Use Unione to email get and walk me through the result in plain English.
Use Unione to email list and walk me through the result in plain English.
ClawLink vs. building it yourself
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want Unione working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the Unione API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Unione account becomes available to the agent without you building credential management. |
| Ongoing maintenance | You own refresh logic, permission debugging, environment config, and every provider-specific edge case for Unione. | ClawLink handles the repetitive integration plumbing so your team can focus on the workflow instead of the infrastructure. |
| Agent usability | You still need to expose the right Unione actions to the runtime in a format your agent can reliably use. | 32 tools for Unione are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes Unione to AI agents. It is developer infrastructure: Python and TypeScript SDKs, an MCP server, and a catalog past 1,000 apps, aimed at teams shipping agent products. ClawLink is built for Hermes Agent users instead. You install the plugin once, connect Unione in the browser, and the 32 tools above work from chat. There is no SDK and no config file, and the Unione key you paste at setup is stored server-side rather than kept in your environment. Choosing between them? Read the full Composio alternatives comparison.
Troubleshooting
Hermes paired but still can't use Unione
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
Connection succeeds but no tools appear
Reconnect Unione from the dashboard, then start a fresh chat if the runtime still has the old tool catalog loaded.
"Tool schema not loaded yet" error when calling Unione tools
Unione tool schemas load on demand the first time a tool runs and are cached after that, so this error usually clears on its own: wait a few seconds and retry the same request. If every Unione call keeps failing with it in a fresh chat, reconnect from the dashboard, and contact support if it still persists — that pattern points to a configuration problem on our side, not something you can fix by reconnecting again.
Unione returns 403 or "permission denied" on one action while others work
Two usual causes. The connected account may not have access to the specific workspace, inbox, store, or project in the request — check that first. If access looks right, the agent may have sent a placeholder value (like "YOUR_ID" or an example id from documentation) instead of a real one: ask it to run a list or search tool first, then retry the action with a real id from those results. Most failures at this stage are one of these two, not ClawLink bugs.
API key setup works but results look incomplete
Double-check that the API key for Unione has the right scopes or account access. A valid key can still be too limited for some reads or writes.
FAQ
Is there a Hermes Agent Unione integration?
Yes. ClawLink is the fastest way to connect Hermes to Unione: link your Unione account once in the browser and Hermes Agent can call the Unione API through 32 ready-made tools — no custom code or token handling.
How do I connect Unione to Hermes with ClawLink?
Install the plugin with hermes plugins install ClawLink-HQ/hermes-plugin --enable, then pair once: run hermes clawlink begin, approve the link in your browser, and run hermes clawlink finish. Connect Unione in the dashboard and Hermes can use it from the next message — no config files, and the Unione key you paste is stored server-side instead of in your environment.
How long does it take to connect Unione to Hermes Agent?
About two minutes. Sign in, click Connect next to Unione in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring Unione up myself?
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want Unione working from chat.
Hermes paired but still can't use Unione
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
