How to connect CalendarHero to Hermes Agent
Connect CalendarHero to Hermes with ClawLink: paste your CalendarHero key once and 38 tools work from chat. No MCP server to run, nothing stored on your machine.
CalendarHeroAPI KEYMCPCalendarHero is a versatile scheduling tool designed to streamline and simplify your calendar management.. Once connected, Hermes Agent can read and act on CalendarHero from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent CalendarHero 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 CalendarHero setup: pair once in the browser and your always-on Hermes agent can act on CalendarHero 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 CalendarHero.
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 CalendarHero
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with CalendarHero?"
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 CalendarHero in the ClawLink dashboard — paste your CalendarHero API key once.
Verify the connection by asking Hermes:
Pull the relevant data from CalendarHero, 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 CalendarHero is connected in the dashboard, that agent calls the same 38 CalendarHero tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
CalendarHero MCP for Hermes
Looking for a CalendarHero MCP server for Hermes Agent? ClawLink connects CalendarHero to Hermes Agent and exposes 38 CalendarHero tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw CalendarHero integration works the same way.
What the Hermes Agent CalendarHero integration can do
38 CalendarHero tools are ready for Hermes Agent once the account is connected. The 30 below are the ones people reach for most; your agent can call all 38.
30 of 38 CalendarHero tools for Hermes
| Tool | What it does |
|---|---|
Fetch contact calendarhero_fetch_contact | Fetch Contact |
Fetch meeting details calendarhero_fetch_meeting_details | Fetch details for meetings within a specified timeframe |
Fetch user profile calendarhero_fetch_user_profile | Fetch the profile details of the authenticated user |
Get assistant message calendarhero_get_assistant_message | Retrieve a reply message from the CalendarHero assistant |
Get contact count calendarhero_get_contact_count | Get the total count of contacts in CalendarHero |
Get meeting categories calendarhero_get_meeting_categories | Retrieves the user's meeting categories' stats for a specified time period |
Get meeting tasks calendarhero_get_meeting_tasks | Retrieves the user's meeting requests/tasks from CalendarHero |
Get search result calendarhero_get_search_result | Get a search result by ID |
Get user directory calendarhero_get_user_directory | Retrieve a user's directory by its unique identifier |
Get user organization calendarhero_get_user_organization | Retrieve the authenticated user's organization details |
Get user savings calendarhero_get_user_savings | Retrieve the authenticated user's savings information from CalendarHero |
Get webhook calendarhero_get_webhook | Get webhook configuration for a specific event type |
Get webhook sample calendarhero_get_webhook_sample | Retrieve a sample webhook payload for a specific event type |
List meeting templates calendarhero_list_meeting_templates | Retrieves all meeting templates (reusable meeting configurations) for the authenticated user |
List meeting types calendarhero_list_meeting_types | Retrieves all meeting types configured for the authenticated CalendarHero user |
List user calendars calendarhero_list_user_calendars | List all calendar integrations connected to a user's CalendarHero account |
List user directories calendarhero_list_user_directories | Retrieve all directories configured for a user |
Search contact calendarhero_search_contact | Search for existing contacts |
Search integrations calendarhero_search_integrations | Search across all user integrations for a query term |
Add calendar connection calendarhero_add_calendar_connection | Add a new calendar directory/connection to the user's CalendarHero account |
Create contact calendarhero_create_contact | Creates a new contact in CalendarHero with the provided contact information |
Create meeting request v2 calendarhero_create_meeting_request_v2 | Create a new meeting request in CalendarHero |
Create webhook calendarhero_create_webhook | Creates or updates a webhook for a specific event type in CalendarHero |
Send assistant message calendarhero_send_assistant_message | Send a user's message into the CalendarHero assistant |
Send reminder calendarhero_send_reminder | Sends an email reminder to all contacts/participants about a scheduled meeting request |
Update contact calendarhero_update_contact | Updates an existing contact in CalendarHero with new information |
Update meeting types calendarhero_update_meeting_types | Update meeting type configurations for the authenticated CalendarHero user |
Update restricted apps calendarhero_update_restricted_apps | Update the authenticated user's restricted apps settings |
Update user calendarhero_update_user | Update the authenticated user's profile information |
Update user address calendarhero_update_user_address | Update the authenticated user's address settings by providing latitude and longitude coordinates |
Try it: find the CalendarHero tool you need
Browse the 30 CalendarHero 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 CalendarHero, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from CalendarHero, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from CalendarHero, summarize it in plain English, and point out anything that needs attention.
Pull the relevant data from CalendarHero, 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 CalendarHero working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the CalendarHero API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected CalendarHero 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 CalendarHero. | 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 CalendarHero actions to the runtime in a format your agent can reliably use. | 38 tools for CalendarHero are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes CalendarHero 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 CalendarHero in the browser, and the 38 tools above work from chat. There is no SDK and no config file, and the CalendarHero 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 CalendarHero
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 CalendarHero 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 CalendarHero tools
CalendarHero 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 CalendarHero 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.
CalendarHero 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 CalendarHero 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 CalendarHero integration?
Yes. ClawLink is the fastest way to connect Hermes to CalendarHero: link your CalendarHero account once in the browser and Hermes Agent can call the CalendarHero API through 38 ready-made tools — no custom code or token handling.
How do I connect CalendarHero 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 CalendarHero in the dashboard and Hermes can use it from the next message — no config files, and the CalendarHero key you paste is stored server-side instead of in your environment.
How long does it take to connect CalendarHero to Hermes Agent?
About two minutes. Sign in, click Connect next to CalendarHero in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring CalendarHero 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 CalendarHero working from chat.
Hermes paired but still can't use CalendarHero
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.
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