Retrieve a campaign
Returns the full campaign row: status, channel, schedule, retry settings, product context
and the WhatsApp or email content. Unlike the list, it has no contact aggregates. For those use
GET /api/campaigns, and for the contacts themselves GET /api/campaigns/{campaignId}/contacts.
Poll this after PATCH /api/campaigns/{campaignId}/activate to find out when status becomes
completed, or better, subscribe to the campaign.completed webhook. A paused campaign with
a non-null blocked_reason was paused by the system and needs the fix it describes.
Consistency. Cached for up to 120 seconds. API mutations clear the cache at once. A status change the system makes by itself (auto-completion, system pause) can take up to 120 seconds to appear here.
Access
- Required scope:
read(orwrite/full). - Rate limit: General API — 120 to 600 requests/min per workspace depending on plan. See Rate limits.
- Plan: Available on every plan.
Authentication
Workspace API key: jl_ followed by 64 lowercase hex characters, created by the workspace owner in the
dashboard (Settings → API Keys) and sent as Authorization: Bearer jl_.... The plaintext is shown once,
at creation; Jelliu stores only a SHA-256 hash. A workspace can hold up to 25 active keys.
Operations restricted to admins or owners reject keys without the full scope with 403, and say so in
their description. No key, whatever its scope, can mint or revoke API keys or rotate a webhook secret —
that requires a signed-in owner session. A revoked key stops authenticating within about 10 seconds.
See Authentication.
Path parameters
UUID of the campaign, as returned in id by GET /api/campaigns. A campaign from another workspace or a deleted one answers 404; a value that is not a UUID answers 400.
Response
A campaign row as returned by the retrieve, create, update, activate and pause endpoints.
Keys are snake_case, exactly as stored. The list endpoint returns a lighter
CampaignListItem instead.
Removed from responses (2026-09-15). retry_policy, voicemail_action and voicemail_message
were legacy columns nothing read; none of them was ever settable through this API and none is
returned any more. Redials come from max_retry_attempts and retry_interval_minutes; voicemail
detection is an agent setting (enableVoicemailDetection).

