How to connect Mailercloud to Hermes Agent
Connect Mailercloud to Hermes with ClawLink: paste your Mailercloud key once and 6 tools work from chat. No MCP server to run, nothing stored on your machine.
MailercloudAPI KEYMCPPowerful and simple all-in-one email marketing platform providing effective solutions for rapid business growth.. Once connected, Hermes Agent can read and act on Mailercloud from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent Mailercloud 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 Mailercloud setup: pair once in the browser and your always-on Hermes agent can act on Mailercloud 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 Mailercloud.
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 Mailercloud
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with Mailercloud?"
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 Mailercloud in the ClawLink dashboard — paste your Mailercloud API key once.
Verify the connection by asking Hermes:
Pull the relevant data from Mailercloud, summarize it in plain English, and point out anything that needs attention.
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 Mailercloud is connected in the dashboard, that agent calls the same 6 Mailercloud tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
Mailercloud MCP for Hermes
Looking for a Mailercloud MCP server for Hermes Agent? ClawLink connects Mailercloud to Hermes Agent and exposes 6 Mailercloud tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw Mailercloud integration works the same way.
What the Hermes Agent Mailercloud integration can do
6 Mailercloud tools are ready for Hermes Agent once the account is connected. The 5 below are the ones people reach for most; your agent can call all 6.
5 of 6 Mailercloud tools for Hermes
| Tool | What it does |
|---|---|
Get client plan mailercloud_get_client_plan | Retrieve client plan information from Mailercloud |
Search contacts mailercloud_search_contacts | Retrieve contacts in a specific list with pagination |
Create list mailercloud_create_list | Create a new recipient list in Mailercloud for storing and managing contacts |
Create property mailercloud_create_property | Create a custom property for contacts in Mailercloud |
Update property mailercloud_update_property | Update a custom property of contacts in Mailercloud |
Try it: find the Mailercloud tool you need
Browse the 5 Mailercloud tools
Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.
Example prompts
Pull the relevant data from Mailercloud, summarize it in plain English, and point out anything that needs attention.
Search Mailercloud for what I need, summarize the results, and tell me the next best action.
Create it in Mailercloud for me, then confirm the important fields before you finish.
Create it in Mailercloud for me, then confirm the important fields before you finish.
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 Mailercloud working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the Mailercloud API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Mailercloud 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 Mailercloud. | 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 Mailercloud actions to the runtime in a format your agent can reliably use. | 6 tools for Mailercloud are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes Mailercloud 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 Mailercloud in the browser, and the 6 tools above work from chat. There is no SDK and no config file, and the Mailercloud 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 Mailercloud
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 Mailercloud 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 Mailercloud tools
Mailercloud 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 Mailercloud 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.
Mailercloud 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 Mailercloud 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 Mailercloud integration?
Yes. ClawLink is the fastest way to connect Hermes to Mailercloud: link your Mailercloud account once in the browser and Hermes Agent can call the Mailercloud API through 6 ready-made tools — no custom code or token handling.
How do I connect Mailercloud 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 Mailercloud in the dashboard and Hermes can use it from the next message — no config files, and the Mailercloud key you paste is stored server-side instead of in your environment.
How long does it take to connect Mailercloud to Hermes Agent?
About two minutes. Sign in, click Connect next to Mailercloud in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring Mailercloud 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 Mailercloud working from chat.
Hermes paired but still can't use Mailercloud
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.
