Zernio
Zernio
API Reference

Posting Analytics

Cross-platform

Get post analyticsGETAnalytics changed since a cursorGETSync an external postPOSTGet post analytics timelineGETGet daily aggregated metricsGETGet best times to postGETGet content performance decayGETGet frequency vs engagementGETGet follower statsGET

Instagram

Get Instagram insightsGETGet Instagram follower historyGETGet Instagram demographicsGET

YouTube

Get YouTube channel insightsGETGet YouTube daily viewsGETGet YouTube video retention curveGETGet YouTube demographicsGET

LinkedIn

Get LinkedIn aggregate statsGETGet LinkedIn org analyticsGETGet LinkedIn post statsGETGet LinkedIn post reactionsGET

Facebook

Get Facebook Page insightsGETGet Facebook post reactionsGETGet Facebook post monetization earningsGET

TikTok

Get TikTok account-level insightsGET

Google Business

Get Google Business Profile performance metricsGETGet Google Business Profile search keywordsGET
Dashboard
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OverviewPlatformsAPI ReferenceResources
Posting Analytics

Get frequency vs engagement

Returns the correlation between posting frequency (posts per week) and engagement rate, broken down by platform. Helps find the optimal posting cadence for each platform. Each row represents a specific (platform, posts_per_week) combination with the average engagement rate observed across all weeks matching that frequency. Requires the Analytics add-on.

GET
/v1/analytics/posting-frequency

Authorization

bearerAuth
AuthorizationBearer <token>

API key authentication: send your Zernio API key in the Authorization header, prefixed with Bearer.

In: header

Query Parameters

platform?string

Filter by platform (e.g. "instagram", "tiktok"). Omit for all platforms.

profileId?string

Filter by profile ID. Omit for all profiles.

accountId?string

Filter by account ID. Omit for all accounts.

source?string

Filter by post origin. "late" for posts published via Zernio, "external" for posts imported from platforms.

Default"all"

Value in

  • "all"
  • "late"
  • "external"

Response Body

application/json

application/json

application/json

{  "frequency": [    {      "platform": "instagram",      "posts_per_week": 2,      "avg_engagement_rate": 44.4,      "avg_engagement": 512,      "weeks_count": 18    },    {      "platform": "instagram",      "posts_per_week": 4,      "avg_engagement_rate": 5.9,      "avg_engagement": 203,      "weeks_count": 6    },    {      "platform": "facebook",      "posts_per_week": 3,      "avg_engagement_rate": 12.5,      "avg_engagement": 87,      "weeks_count": 10    }  ]}
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Get content performance decay

Returns how engagement accumulates over time after a post is published. Each bucket shows what percentage of the post's total engagement had been reached by that time window. Useful for understanding content lifespan (e.g. "posts reach 78% of total engagement within 24 hours"). Requires the Analytics add-on.

Get follower stats

Returns follower count history and growth metrics for connected accounts. Requires analytics add-on subscription. Follower counts are refreshed once per day.