Daily Slack DM with prep briefs for every Calendly meeting

Build me an agent workflow that runs every weekday at 7am America/New_York and sends me a single Slack DM with a prep brief for every external Calendly meeting on my calendar that day.

Trigger: cron, weekdays at 07:00 America/New_York.

Step 1 — Pull today's meetings. Use Calendly's List Scheduled Events for my user, filtered to events with min_start_time = today 00:00 in my timezone and max_start_time = today 23:59. Status = active. For each scheduled event, capture the start time, end time, event type name, location, and the event UUID.

Step 2 — Pull invitees. For each scheduled event, call Calendly's List Event Invitees and collect each invitee's email, name, timezone, and the questions_and_answers array (the intake form responses). If an invitee's email domain matches my company domain (I'll provide it as an input, e.g. acme.com), skip that meeting entirely — it's internal.

Step 3 — Enrich from HubSpot. For each remaining invitee email, call HubSpot's Get Contact with idProperty = email, requesting these properties: firstname, lastname, jobtitle, company, lifecyclestage, hs_lead_status, notes_last_contacted, hs_last_sales_activity_date, hubspot_owner_id. If Get Contact 404s, fall back to HubSpot's Search Contacts with a filter on email. Then call HubSpot's Search Deals with filters dealstage NOT IN closedwon/closedlost AND associations.contact = the contact id, requesting dealname, amount, dealstage, closedate, pipeline. If the contact isn't in HubSpot at all, mark the meeting as MISSING CRM CONTEXT.

Step 4 — Synthesize the brief. For each meeting, write a one-screen prep brief with: meeting time and event type; who's attending (name, title, company); CRM snapshot (lifecycle stage, last activity date, account owner); open deals (name, stage, amount, close date) or a note that there are none; the invitee's intake answers verbatim; three suggested talking points grounded in the CRM context and intake answers; and two open questions to ask. If the contact is missing in HubSpot, replace the CRM section with a clear 'No HubSpot record — enrich before the meeting' callout.

Step 5 — Deliver. Combine all briefs (sorted by meeting start time) into one Slack message and use Slack's Send a Message to DM it to me. Lead with a one-line header like 'Today's prep, 3 external meetings'. Use Slack mrkdwn formatting (bold names, bullet lists). If there are zero external meetings today, send a short DM confirming there's nothing to prep so I know the workflow ran.

Inputs to expose for me to configure: my company email domain (for the internal-meeting filter), my Slack user ID or DM target, and my timezone (default America/New_York). Use my connected Calendly, HubSpot, and Slack accounts.