How to connect Heyy to Hermes Agent (paste one key, 13 tools)

Most guides for giving Hermes Agent Heyy 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 Heyy setup: pair once in the browser and your always-on Hermes agent can act on Heyy 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 Heyy.

1
Install 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 Heyy
Paste your API key in the dashboard.
3
Use it from chat
Ask Hermes Agent: "What can you do with Heyy?"

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 test

Then connect Heyy in the ClawLink dashboard — paste your Heyy API key once.

Verify the connection by asking Hermes:

List the relevant items in Heyy, group them by priority, and recommend what Hermes should do next.

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 login

login opens the same browser approval and stores a credential locally. Once Heyy is connected in the dashboard, that agent calls the same 13 Heyy tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.

Heyy MCP for Hermes

Looking for a Heyy MCP server for Hermes Agent? ClawLink connects Heyy to Hermes Agent and exposes 13 Heyy tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw Heyy integration works the same way.

What the Hermes Agent Heyy integration can do

13 Heyy tools are ready for Hermes Agent once the account is connected. The 10 below are the ones people reach for most; your agent can call all 13.

10 of 13 Heyy tools for Hermes

Tool	What it does
List attributes `heyy_list_attributes`	Retrieve all attributes available in the Heyy system
List automations `heyy_list_automations`	Retrieve automation workflows for a specified channel
List channels `heyy_list_channels`	Retrieve all available channels from the Heyy system
List message templates `heyy_list_message_templates`	Retrieve all message templates available in the Heyy system
List webhooks `heyy_list_webhooks`	Retrieve all API webhooks configured for the account
Create attribute `heyy_create_attribute`	Create a new custom attribute for contacts in Heyy
Create contact `heyy_create_contact`	Create a new contact in Heyy with optional details including first name, last name, email
Create label `heyy_create_label`	Create a new label for categorizing contacts in Heyy
Create webhook `heyy_create_webhook`	Create a new webhook for receiving event notifications across multiple channels
Update webhook `heyy_update_webhook`	Update a webhook's URL and active status

Try it: find the Heyy tool you need

Browse the 10 Heyy tools

Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.

Example prompts

List the relevant items in Heyy, group them by priority, and recommend what Hermes should do next.

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 Heyy working from chat.

	Manual	ClawLink
Credential handling	Collect, validate, store, and rotate the Heyy API key yourself, then make sure every tool call uses the right account.	Users complete the hosted ClawLink setup once and the connected Heyy 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 Heyy.	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 Heyy actions to the runtime in a format your agent can reliably use.	13 tools for Heyy are already exposed through ClawLink, so the agent can read and act from chat immediately.

ClawLink vs. Composio

Composio also exposes Heyy 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 Heyy in the browser, and the 13 tools above work from chat. There is no SDK and no config file, and the Heyy 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 Heyy

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 Heyy 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 Heyy tools

Heyy 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 Heyy 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.

Heyy 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 Heyy 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 Heyy integration?

Yes. ClawLink is the fastest way to connect Hermes to Heyy: link your Heyy account once in the browser and Hermes Agent can call the Heyy API through 13 ready-made tools — no custom code or token handling.

How do I connect Heyy 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 Heyy in the dashboard and Hermes can use it from the next message — no config files, and the Heyy key you paste is stored server-side instead of in your environment.

How long does it take to connect Heyy to Hermes Agent?

About two minutes. Sign in, click Connect next to Heyy in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.

Why use ClawLink instead of wiring Heyy up myself?

Hermes paired but still can't use Heyy

How to connect Heyy to Hermes Agent

Setup

Install and pair

Connect Heyy

Use it from chat