[Medium] No public API endpoint to list prospects enrolled in a campaign

[loic2309]

Summary

There is no reliable way to retrieve the list of prospects currently enrolled in a given campaign via the public API. The two most natural approaches both fail.

Attempts

Attempt 1 — Direct enrollments endpoint

curl -H "Authorization: $OVERLOOP_API_KEY" \
  "https://api.overloop.ai/public/v1/automations/7406/enrollments"
# Response: 200 text/html — not a public API endpoint

Attempt 2 — Filter prospects by campaign

curl -H "Authorization: $OVERLOOP_API_KEY" \
  "https://api.overloop.ai/public/v1/prospects?filter[automation_id]=7406"
# Response: 200 — returns 100 unfiltered prospects (filter is ignored)

curl -H "Authorization: $OVERLOOP_API_KEY" \
  "https://api.overloop.ai/public/v1/prospects?filter[campaign_id]=7406"
# Response: 200 — same 100 unfiltered prospects

What does work (partial)

Individual enrollment lookup by known enrollment ID:

curl -H "Authorization: $OVERLOOP_API_KEY" \
  "https://api.overloop.ai/public/v1/automations/7406/enrollments/1182018"
# Response: 200 JSON — returns enrollment attributes including prospect_id

But this requires knowing the enrollment ID in advance, which is not available without the listing endpoint.

Expected Behavior

GET /automations/{id}/enrollments should return a paginated JSON list of enrollments for the given campaign, including prospect_id and enrollment status.

Impact

• Cannot verify programmatically who is enrolled in a campaign
• Cannot build enrollment deduplication logic
• Cannot audit or diff campaign contacts between the API and source systems
• Debugging enrollment issues requires using the Overloop UI