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
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Posting Analytics

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.

GET
/v1/accounts/follower-stats

Authorization

bearerAuth
AuthorizationBearer <token>

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

In: header

Query Parameters

accountIds?string

Comma-separated list of account IDs (optional, defaults to all user's accounts)

profileId?string

Filter by profile ID

fromDate?string

Start date in YYYY-MM-DD format (defaults to 30 days ago)

Formatdate
toDate?string

End date in YYYY-MM-DD format (defaults to today)

Formatdate
granularity?string

Data aggregation level

Default"daily"

Value in

  • "daily"
  • "weekly"
  • "monthly"

Response Body

application/json

application/json

application/json

{  "accounts": [    {      "_id": "64e1...",      "platform": "twitter",      "username": "@acme",      "currentFollowers": 1250,      "growth": 50,      "growthPercentage": 4.17,      "dataPoints": 30    }  ],  "stats": {    "64e1...": [      {        "date": "2024-01-01",        "followers": 1200      },      {        "date": "2024-01-02",        "followers": 1250      }    ]  },  "dateRange": {    "from": "2024-01-01T00:00:00.000Z",    "to": "2024-01-31T23:59:59.999Z"  },  "granularity": "daily"}
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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 Instagram insights

Returns account-level Instagram insights such as reach, views, accounts engaged, and total interactions. These metrics reflect the entire account's performance across all content surfaces (feed, stories, explore, profile), and are fundamentally different from post-level metrics. Data may be delayed up to 48 hours. Max 90 days, defaults to last 30 days. Requires the Analytics add-on.