How to connect Customer.io to Hermes Agent
Connect Customer.io to Hermes with ClawLink: paste your Customer.io key once and 23 tools work from chat. No MCP server to run, nothing stored on your machine.
Customer.ioAPI KEYMCPCustomer.io is a customer engagement platform that enables businesses to send targeted messages to their customers through various channels, including email, SMS, and push notifications.. Once connected, Hermes Agent can read and act on Customer.io from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent Customer.io 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 Customer.io setup: pair once in the browser and your always-on Hermes agent can act on Customer.io 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 Customer.io.
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 Customer.io
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with Customer.io?"
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 Customer.io in the ClawLink dashboard — paste your Customer.io API key once.
Verify the connection by asking Hermes:
Pull the relevant data from Customer.io, 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 Customer.io is connected in the dashboard, that agent calls the same 23 Customer.io tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
Customer.io MCP for Hermes
Looking for a Customer.io MCP server for Hermes Agent? ClawLink connects Customer.io to Hermes Agent and exposes 23 Customer.io tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw Customer.io integration works the same way.
What the Hermes Agent Customer.io integration can do
23 Customer.io tools are ready for Hermes Agent once the account is connected.
All 23 Customer.io tools for Hermes
| Tool | What it does |
|---|---|
Get integrations customerio_get_integrations | Retrieve a list of integrations in your workspace |
Get messages customerio_get_messages | Retrieve a list of messages sent from your workspace |
Get segment details customerio_get_segment_details | Retrieve details of a specific segment |
Get segment membership customerio_get_segment_membership | Retrieve people in a specific segment |
Get segments customerio_get_segments | Retrieve a list of segments in your workspace |
Get trigger customerio_get_trigger | Retrieves details about a specific API-triggered broadcast, including trigger ID, campaign ID |
Get triggers customerio_get_triggers | Retrieve all API trigger instances for a specific broadcast/campaign |
Get webhooks customerio_get_webhooks | Retrieves all reporting webhook configurations from the Customer.io workspace |
List collections customerio_list_collections | List all Collections metadata |
List ip addresses customerio_list_ip_addresses | Retrieve the list of IP addresses used by Customer.io for sending messages |
List newsletters customerio_list_newsletters | List all newsletters |
List snippets customerio_list_snippets | List all snippets in your workspace |
List transactional messages customerio_list_transactional_messages | Lists all transactional message templates in your Customer.io workspace |
Add person to group customerio_add_person_to_group | Add people to a group in Customer.io |
Create alias customerio_create_alias | Create an alias to merge multiple profiles in Customer.io |
Identify person customerio_identify_person | Identify a person and assign traits to them in Customer.io |
Send batch customerio_send_batch | Send multiple CDP calls (identify, track, page, screen, group, alias) in a single batch request |
Track event customerio_track_event | Send an event associated with a person in Customer.io |
Track page customerio_track_page | Track page view events for website visitors in Customer.io |
Track screen customerio_track_screen | Track mobile screen views in Customer.io for analytics and user journey tracking |
Trigger broadcast customerio_trigger_broadcast | Manually trigger a Customer.io broadcast/campaign to send messages to a defined audience |
Customer io suppress person customerio_customer_io_suppress_person | Suppress a customer profile to permanently delete it and prevent re-adding with the same |
Unsubscribe delivery customerio_unsubscribe_delivery | Handle custom unsubscribe requests for email deliveries in Customer.io |
Try it: find the Customer.io tool you need
Browse the 23 Customer.io 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 Customer.io, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Customer.io, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Customer.io, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from Customer.io, summarize it in plain English, and point out anything that needs attention.
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 Customer.io working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the Customer.io API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Customer.io 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 Customer.io. | 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 Customer.io actions to the runtime in a format your agent can reliably use. | 23 tools for Customer.io are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes Customer.io 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 Customer.io in the browser, and the 23 tools above work from chat. There is no SDK and no config file, and the Customer.io 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 Customer.io
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 Customer.io 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 Customer.io tools
Customer.io 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 Customer.io 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.
Customer.io 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 Customer.io 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 Customer.io integration?
Yes. ClawLink is the fastest way to connect Hermes to Customer.io: link your Customer.io account once in the browser and Hermes Agent can call the Customer.io API through 23 ready-made tools — no custom code or token handling.
How do I connect Customer.io 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 Customer.io in the dashboard and Hermes can use it from the next message — no config files, and the Customer.io key you paste is stored server-side instead of in your environment.
How long does it take to connect Customer.io to Hermes Agent?
About two minutes. Sign in, click Connect next to Customer.io in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring Customer.io 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 Customer.io working from chat.
Hermes paired but still can't use Customer.io
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.
