GA4 Site Summary

GET

/api/v1/ga4-insights/site-summary

curl --request GET \
  --url 'https://sitechecker.pro/api/v1/ga4-insights/site-summary?project_id=12345&date_from=2026-02-19&date_to=2026-05-19&source_channel=organic_search&metrics=sessions%2Cbounce_rate%2Ckey_events&dimension=source_medium&dimension_limit=15&include_other=true&include_comparison=true' \
  --header 'Authorization: Bearer <token>'

• Production

Returns site-level GA4 behavior metrics for the selected period and scope. It needs a connected GA4 property: without one the endpoint answers GA4_NOT_CONNECTED rather than an empty result. Comparison, when included, is the previous period of the same length.

Authorizations

• bearerAuth

Parameters

Query Parameters

project_id

required

integer

Example

12345

Project ID.

date_from

required

string format: date

Example

2026-02-19

Start of the monitoring period (inclusive), ISO date (UTC).

date_to

required

string format: date

Example

2026-05-19

End of the monitoring period (inclusive), ISO date (UTC).

source_channel

string

default: organic_search

Allowed values: organic_search all

Traffic scope. GA4 storage only distinguishes organic vs total, so only these values are supported in V1; other channels return UNSUPPORTED_FILTER. Default: organic_search.

metrics

string

Example

sessions,bounce_rate,key_events

Comma-separated GA4 metric keys. Defaults to all V1 metrics. Unknown metrics return UNSUPPORTED_METRIC.

dimension

string

Allowed values: source_medium

Optional breakdown dimension. V1 supports source_medium on site-summary only, and only with source_channel=all (served from the live GA4 API, top-N by sessions). Unsupported dimensions return UNSUPPORTED_DIMENSION. See ga4-insights/filter-values dimension_support.

dimension_limit

integer

default: 15 >= 1 <= 15

Cap for breakdown rows, especially source_medium.

include_other

boolean

default: true

When the dimension is high-cardinality, group remaining rows into other if supported.

include_comparison

boolean

default: true

Default true for summary/list endpoints. Return previous period same-length values/deltas.

Responses

200

Site-level GA4 metrics with optional previous-period comparison

Media typeapplication/json

object

data

Site-level GA4 metrics for the selected scope. previous/change appear only when include_comparison=true; change.*_percent is null when the previous value is zero.

object

scope

Applied scope for the returned metrics.

object

source_channel

Applied source/channel scope.

string

sessions

Sessions for the selected source_channel scope/filters. If source_channel=all, this means all sessions.

integer

bounce_rate

Bounce rate for the selected scope/filters.

number format: float

average_session_duration

Average session duration.

number format: float

key_events

Key events count.

integer

session_key_event_rate

Session key event rate.

number format: float

previous

One of:

object

GA4 metric values. average_session_duration is in seconds.

object

sessions

Sessions for the selected source_channel scope/filters.

integer

bounce_rate

Bounce rate for the selected scope/filters.

number format: float

average_session_duration

Average session duration.

number format: float

key_events

Key events count.

integer

session_key_event_rate

Session key event rate.

number format: float

change

Absolute and percent deltas for the same scope/filters.

object

key

additional properties

number

nullable

Example

{
  "data": {
    "scope": {
      "source_channel": "organic_search"
    },
    "sessions": 49400,
    "bounce_rate": 16.9,
    "average_session_duration": 501,
    "key_events": 0,
    "session_key_event_rate": 0,
    "previous": {
      "sessions": 49400,
      "bounce_rate": 16.9,
      "average_session_duration": 501,
      "key_events": 0,
      "session_key_event_rate": 0
    }
  }
}

401

Missing or invalid API key

Media typeapplication/json

Returned as INVALID_API_KEY when the key is missing or unknown, and as REVOKED_API_KEY when the key exists but was revoked — the latter needs a new key.

object

error

required

object

code

required

string

Allowed values: VALIDATION_ERROR BAD_REQUEST PROJECT_NOT_FOUND SEGMENT_NOT_FOUND ACCESS_DENIED CRAWL_IN_PROGRESS NOT_FOUND UPSTREAM_ERROR INVALID_API_KEY REVOKED_API_KEY RATE_LIMIT_EXCEEDED MISSING_PUBLIC_API_ACCESS INTERNAL_ERROR CRAWL_NOT_FOUND INVALID_DATE_RANGE INVALID_FILTER INVALID_EVENT_TYPE KEYWORD_NOT_FOUND OPPORTUNITY_NOT_FOUND SNAPSHOT_UNAVAILABLE GSC_NOT_CONNECTED GA4_NOT_CONNECTED SITE_AUDIT_DATA_UNAVAILABLE GA4_DATA_UNAVAILABLE UNSUPPORTED_FILTER UNSUPPORTED_DIMENSION UNSUPPORTED_METRIC SEGMENT_FILTER_UNSUPPORTED UNSUPPORTED_SCOPE AI_OVERVIEW_DATA_UNAVAILABLE PROMPT_DATA_UNAVAILABLE

message

required

string

Example

{
  "error": {
    "code": "INVALID_API_KEY",
    "message": "Invalid or missing API key."
  }
}

403

No active API entitlement for the account, or the project belongs to another account

Media typeapplication/json

Returned as MISSING_PUBLIC_API_ACCESS when the account has no active API entitlement, and as ACCESS_DENIED when the requested project belongs to another account.

object

error

required

object

code

required

string

Allowed values: VALIDATION_ERROR BAD_REQUEST PROJECT_NOT_FOUND SEGMENT_NOT_FOUND ACCESS_DENIED CRAWL_IN_PROGRESS NOT_FOUND UPSTREAM_ERROR INVALID_API_KEY REVOKED_API_KEY RATE_LIMIT_EXCEEDED MISSING_PUBLIC_API_ACCESS INTERNAL_ERROR CRAWL_NOT_FOUND INVALID_DATE_RANGE INVALID_FILTER INVALID_EVENT_TYPE KEYWORD_NOT_FOUND OPPORTUNITY_NOT_FOUND SNAPSHOT_UNAVAILABLE GSC_NOT_CONNECTED GA4_NOT_CONNECTED SITE_AUDIT_DATA_UNAVAILABLE GA4_DATA_UNAVAILABLE UNSUPPORTED_FILTER UNSUPPORTED_DIMENSION UNSUPPORTED_METRIC SEGMENT_FILTER_UNSUPPORTED UNSUPPORTED_SCOPE AI_OVERVIEW_DATA_UNAVAILABLE PROMPT_DATA_UNAVAILABLE

message

required

string

Example

{
  "error": {
    "code": "MISSING_PUBLIC_API_ACCESS",
    "message": "API access is not available: the account has no active API entitlement."
  }
}

404

Project not found

Media typeapplication/json

The exact missing resource is in error.code: PROJECT_NOT_FOUND, SEGMENT_NOT_FOUND, CRAWL_NOT_FOUND, KEYWORD_NOT_FOUND, OPPORTUNITY_NOT_FOUND, SNAPSHOT_UNAVAILABLE or NOT_FOUND.

object

error

required

object

code

required

string

Allowed values: VALIDATION_ERROR BAD_REQUEST PROJECT_NOT_FOUND SEGMENT_NOT_FOUND ACCESS_DENIED CRAWL_IN_PROGRESS NOT_FOUND UPSTREAM_ERROR INVALID_API_KEY REVOKED_API_KEY RATE_LIMIT_EXCEEDED MISSING_PUBLIC_API_ACCESS INTERNAL_ERROR CRAWL_NOT_FOUND INVALID_DATE_RANGE INVALID_FILTER INVALID_EVENT_TYPE KEYWORD_NOT_FOUND OPPORTUNITY_NOT_FOUND SNAPSHOT_UNAVAILABLE GSC_NOT_CONNECTED GA4_NOT_CONNECTED SITE_AUDIT_DATA_UNAVAILABLE GA4_DATA_UNAVAILABLE UNSUPPORTED_FILTER UNSUPPORTED_DIMENSION UNSUPPORTED_METRIC SEGMENT_FILTER_UNSUPPORTED UNSUPPORTED_SCOPE AI_OVERVIEW_DATA_UNAVAILABLE PROMPT_DATA_UNAVAILABLE

message

required

string

Example

{
  "error": {
    "code": "PROJECT_NOT_FOUND",
    "message": "Project not found."
  }
}

409

Google Analytics 4 is not connected

Media typeapplication/json

object

error

required

object

code

required

string

Allowed values: VALIDATION_ERROR BAD_REQUEST PROJECT_NOT_FOUND SEGMENT_NOT_FOUND ACCESS_DENIED CRAWL_IN_PROGRESS NOT_FOUND UPSTREAM_ERROR INVALID_API_KEY REVOKED_API_KEY RATE_LIMIT_EXCEEDED MISSING_PUBLIC_API_ACCESS INTERNAL_ERROR CRAWL_NOT_FOUND INVALID_DATE_RANGE INVALID_FILTER INVALID_EVENT_TYPE KEYWORD_NOT_FOUND OPPORTUNITY_NOT_FOUND SNAPSHOT_UNAVAILABLE GSC_NOT_CONNECTED GA4_NOT_CONNECTED SITE_AUDIT_DATA_UNAVAILABLE GA4_DATA_UNAVAILABLE UNSUPPORTED_FILTER UNSUPPORTED_DIMENSION UNSUPPORTED_METRIC SEGMENT_FILTER_UNSUPPORTED UNSUPPORTED_SCOPE AI_OVERVIEW_DATA_UNAVAILABLE PROMPT_DATA_UNAVAILABLE

message

required

string

Example

{
  "error": {
    "code": "GA4_NOT_CONNECTED",
    "message": "Google Analytics 4 is not connected for this project."
  }
}

422

Validation error or unsupported filter/dimension

Media typeapplication/json

Rejected query parameters. error.code is VALIDATION_ERROR for parameter validation (including a query parameter the endpoint does not accept), or INVALID_DATE_RANGE / INVALID_FILTER / INVALID_EVENT_TYPE / UNSUPPORTED_FILTER / UNSUPPORTED_DIMENSION / UNSUPPORTED_METRIC / UNSUPPORTED_SCOPE / SEGMENT_FILTER_UNSUPPORTED for module-specific rules.

object

error

required

object

code

required

string

Allowed values: VALIDATION_ERROR BAD_REQUEST PROJECT_NOT_FOUND SEGMENT_NOT_FOUND ACCESS_DENIED CRAWL_IN_PROGRESS NOT_FOUND UPSTREAM_ERROR INVALID_API_KEY REVOKED_API_KEY RATE_LIMIT_EXCEEDED MISSING_PUBLIC_API_ACCESS INTERNAL_ERROR CRAWL_NOT_FOUND INVALID_DATE_RANGE INVALID_FILTER INVALID_EVENT_TYPE KEYWORD_NOT_FOUND OPPORTUNITY_NOT_FOUND SNAPSHOT_UNAVAILABLE GSC_NOT_CONNECTED GA4_NOT_CONNECTED SITE_AUDIT_DATA_UNAVAILABLE GA4_DATA_UNAVAILABLE UNSUPPORTED_FILTER UNSUPPORTED_DIMENSION UNSUPPORTED_METRIC SEGMENT_FILTER_UNSUPPORTED UNSUPPORTED_SCOPE AI_OVERVIEW_DATA_UNAVAILABLE PROMPT_DATA_UNAVAILABLE

message

required

string

Example

{
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "project_id is required."
  }
}

429

Rate limit exceeded — retry after the interval in the Retry-After header

Media typeapplication/json

object

error

required

object

code

required

string

Allowed values: VALIDATION_ERROR BAD_REQUEST PROJECT_NOT_FOUND SEGMENT_NOT_FOUND ACCESS_DENIED CRAWL_IN_PROGRESS NOT_FOUND UPSTREAM_ERROR INVALID_API_KEY REVOKED_API_KEY RATE_LIMIT_EXCEEDED MISSING_PUBLIC_API_ACCESS INTERNAL_ERROR CRAWL_NOT_FOUND INVALID_DATE_RANGE INVALID_FILTER INVALID_EVENT_TYPE KEYWORD_NOT_FOUND OPPORTUNITY_NOT_FOUND SNAPSHOT_UNAVAILABLE GSC_NOT_CONNECTED GA4_NOT_CONNECTED SITE_AUDIT_DATA_UNAVAILABLE GA4_DATA_UNAVAILABLE UNSUPPORTED_FILTER UNSUPPORTED_DIMENSION UNSUPPORTED_METRIC SEGMENT_FILTER_UNSUPPORTED UNSUPPORTED_SCOPE AI_OVERVIEW_DATA_UNAVAILABLE PROMPT_DATA_UNAVAILABLE

message

required

string

Example

{
  "error": {
    "code": "RATE_LIMIT_EXCEEDED",
    "message": "Rate limit exceeded. Try again later."
  }
}

500

Internal server error

Media typeapplication/json

object

error

required

object

code

required

string

Allowed values: VALIDATION_ERROR BAD_REQUEST PROJECT_NOT_FOUND SEGMENT_NOT_FOUND ACCESS_DENIED CRAWL_IN_PROGRESS NOT_FOUND UPSTREAM_ERROR INVALID_API_KEY REVOKED_API_KEY RATE_LIMIT_EXCEEDED MISSING_PUBLIC_API_ACCESS INTERNAL_ERROR CRAWL_NOT_FOUND INVALID_DATE_RANGE INVALID_FILTER INVALID_EVENT_TYPE KEYWORD_NOT_FOUND OPPORTUNITY_NOT_FOUND SNAPSHOT_UNAVAILABLE GSC_NOT_CONNECTED GA4_NOT_CONNECTED SITE_AUDIT_DATA_UNAVAILABLE GA4_DATA_UNAVAILABLE UNSUPPORTED_FILTER UNSUPPORTED_DIMENSION UNSUPPORTED_METRIC SEGMENT_FILTER_UNSUPPORTED UNSUPPORTED_SCOPE AI_OVERVIEW_DATA_UNAVAILABLE PROMPT_DATA_UNAVAILABLE

message

required

string

Example

{
  "error": {
    "code": "INTERNAL_ERROR",
    "message": "Internal server error."
  }
}

502

Upstream Google Analytics 4 service error (dimension=source_medium)

Media typeapplication/json

object

error

required

object

code

required

string

Allowed values: VALIDATION_ERROR BAD_REQUEST PROJECT_NOT_FOUND SEGMENT_NOT_FOUND ACCESS_DENIED CRAWL_IN_PROGRESS NOT_FOUND UPSTREAM_ERROR INVALID_API_KEY REVOKED_API_KEY RATE_LIMIT_EXCEEDED MISSING_PUBLIC_API_ACCESS INTERNAL_ERROR CRAWL_NOT_FOUND INVALID_DATE_RANGE INVALID_FILTER INVALID_EVENT_TYPE KEYWORD_NOT_FOUND OPPORTUNITY_NOT_FOUND SNAPSHOT_UNAVAILABLE GSC_NOT_CONNECTED GA4_NOT_CONNECTED SITE_AUDIT_DATA_UNAVAILABLE GA4_DATA_UNAVAILABLE UNSUPPORTED_FILTER UNSUPPORTED_DIMENSION UNSUPPORTED_METRIC SEGMENT_FILTER_UNSUPPORTED UNSUPPORTED_SCOPE AI_OVERVIEW_DATA_UNAVAILABLE PROMPT_DATA_UNAVAILABLE

message

required

string

Example

{
  "error": {
    "code": "UPSTREAM_ERROR",
    "message": "The upstream Google Analytics 4 service is temporarily unavailable. Try again later."
  }
}