Beehiiv
Beehiiv is a newsletter platform for managing publications, subscribers, posts, automations, audience engagement, and monetization.
What agents can do
Actions11
Create draft post
Create an unscheduled draft post from HTML content.
Create segment
Create an audience segment from explicit subscription IDs, explicit emails, or custom-field rules; returns the segment and its initial calculation status.
Create subscription
Create a new publication subscription without reactivating an unsubscribed address or sending a welcome email; supports attribution, initial custom fields, and newsletter-list assignment.
List custom fields
List the custom-field definitions available for subscriber metadata and dynamic audience segments in a publication, returning one page controlled by page and limit with pagination metadata for…
List posts
Search a publication's posts by status, audience, channel, slug, tags, or author and optionally include content, recipients, or statistics.
List publications
List publications accessible to the API key, optionally including publication statistics; use the returned publication IDs with publication-scoped tools.
List segment members
List full subscriber records currently included in an audience segment, optionally including stats, custom fields, referrals, tags, or premium tiers.
List segments
List audience segments in a publication, filtered by segment type or calculation status, with optional latest statistics.
3 moreFewer
List subscriptions
Search a publication's subscriptions by exact email or filter by status and tier, returning one cursor-controlled page of subscriber records.
Update draft post
Update content or presentation settings on an existing draft after verifying it is still a draft; refuses confirmed, archived, or sent posts and cannot publish or schedule.
Update subscription custom fields
Set or remove custom-field values on one subscription without changing its email, tier, billing link, or subscribed status.
How it connects
You paste an API key from Beehiiv on a page Composio hosts, so the key never passes through Definable.
Keep the connection to yourself or share it with your workspace. Any action that writes or sends can wait for your approval.
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