> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ringg.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> To search or read these docs, connect the Ringg docs MCP server at https://docs.ringg.ai/mcp (no key needed; tools search_ringg_ai and query_docs_filesystem_ringg_ai) instead of browsing pages one by one. Setup for each client: https://docs.ringg.ai/resources/mcp-server/docs-mcp-server/mcp-for-ai-assistants.md
> The dashboard labels agents "Assistants"; these docs say "agent". Both mean the same object, identified by agent_id.
> API base URL: https://prod-api.ringg.ai/ca/api/v0. Send the workspace API key in the X-API-KEY header, from server-side code only.
> Placing a call dials a real phone number and spends credits. Confirm the number with the user before calling.
> To act on a Ringg workspace (place calls, edit agents, read transcripts), use the separate Ringg workspace MCP server at https://mcp.ringg.ai/mcp: https://docs.ringg.ai/resources/mcp-server/workspace-mcp-server/overview.md

> Get median and 95th-percentile agent response latency over time, filtered by date, agent, version, campaign or channel, to spot latency regressions.

# Get Latency Trend

export const RelatedTopics = ({items}) => <div className="not-prose mt-12">
    <div className="text-sm font-medium text-gray-500 dark:text-zinc-400 mb-3">Related topics</div>
    <div className="flex flex-col gap-2.5">
      {items.map(([title, href]) => <a key={href} href={href} className="flex items-center gap-2.5 text-sm text-gray-700 hover:text-gray-950 dark:text-zinc-300 dark:hover:text-white">
          <Icon icon="file-text" size={16} color="currentColor" />
          {title}
        </a>)}
    </div>
  </div>;

Plot `bucket` on the X-axis and `p50_ms` and `p95_ms` on the Y-axis. Compare before and after a prompt, model or voice change to catch regressions.

## Notes

* `scored` is the number of calls in the bucket with latency data. Buckets with few scored calls are noisy.
* Bucket size follows the date range: hour, day, week (labelled with the Monday) or month (labelled with the 1st). Pass `tz` to bucket in your timezone.

## Errors

* `400`: a filter is invalid, such as an unknown `channel`, a malformed ID, or `sub_workspace_id` sent from a workspace that isn't a primary workspace.
* `401`: `X-API-KEY` is missing or invalid.

<RelatedTopics items={[["Analytics", "/documentation/monitor/analytics"], ["Get agent performance", "/api-reference/monitoring/analytics/get-agent-performance"]]} />


## OpenAPI

````yaml get /analytics/v4/latency-trend
openapi: 3.0.0
info:
  title: Ringg AI API Documentation
  description: >-
    The Ringg AI REST API. Base URL https://prod-api.ringg.ai/ca/api/v0; send
    your workspace API key in the X-API-KEY header from server-side code only.
    Requests and responses are JSON.
  version: 2.0.0
  contact:
    name: Ringg AI support
    email: admin@ringg.ai
    url: https://docs.ringg.ai
servers:
  - url: https://prod-api.ringg.ai/ca/api/v0
security:
  - ApiKeyAuth: []
tags:
  - name: workspace
    description: Endpoints for managing your workspace.
  - name: agent
    description: Endpoints for managing agents.
  - name: calling
    description: Endpoints for making and managing calls.
  - name: campaign
    description: Endpoints for managing campaigns.
  - name: analytics
    description: >-
      Analytics v4 endpoints for call, agent, cohort and chat performance
      metrics.
  - name: termination
    description: Endpoints for terminating active calls using different methods.
  - name: knowledgebase
    description: Endpoints for managing knowledge bases.
paths:
  /analytics/v4/latency-trend:
    get:
      tags:
        - analytics
      summary: Get Latency Trend
      description: Returns p50 and p95 agent response latency over time.
      operationId: getLatencyTrend
      parameters:
        - name: start_date
          in: query
          description: >-
            Start of the reporting window. Accepts `YYYY-MM-DD` or ISO-8601.
            Omit both dates for all time.
          required: false
          schema:
            type: string
            example: '2026-10-01'
        - name: end_date
          in: query
          description: >-
            End of the reporting window (inclusive). Accepts `YYYY-MM-DD` or
            ISO-8601.
          required: false
          schema:
            type: string
            example: '2026-10-15'
        - name: agent_id
          in: query
          description: Filter by one or more agent IDs (comma-separated).
          required: false
          schema:
            type: string
            example: 00000000-0000-4000-8000-0000000000a1
        - name: agent_version_id
          in: query
          description: Filter by one or more agent version IDs (comma-separated).
          required: false
          schema:
            type: string
            example: 00000000-0000-4000-8000-0000000000d1
        - name: bulk_list_id
          in: query
          description: >-
            Filter by one or more campaign (bulk list) IDs (comma-separated).
            Callback calls inherit the campaign of their parent call.
          required: false
          schema:
            type: string
            example: 00000000-0000-4000-8000-0000000000c1
        - name: voicemail
          in: query
          description: >-
            `true` returns only voicemail calls, `false` excludes them. Omit to
            include all calls.
          required: false
          schema:
            type: boolean
            example: false
        - name: channel
          in: query
          description: >-
            Filter by call channel (comma-separated): `inbound`, `outbound`,
            `webcall`. Unknown values return `400`.
          required: false
          schema:
            type: string
            example: outbound
        - name: include_callback
          in: query
          description: >-
            Include callback-feature calls (`call_category = CALLBACK`) in the
            metrics. Defaults to `false`.
          required: false
          schema:
            type: boolean
            default: false
            example: false
        - name: sub_workspace_id
          in: query
          description: >-
            Primary workspaces only: limit the combined analytics to these Ringg
            Spaces. Repeat the parameter for multiple IDs. The primary
            workspace's own ID is accepted; any other workspace sending this
            parameter gets `400`.
          required: false
          schema:
            type: array
            items:
              type: string
              format: uuid
            example:
              - 00000000-0000-4000-8000-000000000101
          style: form
          explode: true
        - name: tz
          in: query
          description: >-
            IANA timezone used to bucket the time series (for example
            `Asia/Kolkata`). Bucket labels are returned in this timezone.
            Omitted or invalid values fall back to UTC.
          required: false
          schema:
            type: string
            example: Asia/Kolkata
      responses:
        '200':
          description: Latency trend retrieved successfully.
          content:
            application/json:
              schema:
                type: object
                properties:
                  by_bucket:
                    type: array
                    items:
                      type: object
                      properties:
                        bucket:
                          type: string
                          description: >-
                            Time bucket label. Granularity is picked from the
                            date range: hour `YYYY-MM-DD HH:00:00`, day
                            `YYYY-MM-DD`, week (Monday) or month (first day).
                        p50_ms:
                          type: number
                          description: Median latency in milliseconds.
                          nullable: true
                        p95_ms:
                          type: number
                          description: 95th-percentile latency in milliseconds.
                          nullable: true
                        scored:
                          type: integer
                          description: Calls in the bucket with a latency measurement.
              example:
                by_bucket:
                  - bucket: '2026-10-14'
                    p50_ms: 883.4
                    p95_ms: 1074.7
                    scored: 30
                  - bucket: '2026-10-15'
                    p50_ms: 910.2
                    p95_ms: 1180
                    scored: 41
        '400':
          description: >-
            Bad Request - invalid filter value (for example an unknown `channel`
            or malformed ID).
          content:
            application/json:
              example:
                message: 'invalid channel(s): sms'
        '401':
          description: Unauthorized - Invalid or missing authentication.
        '500':
          description: Internal Server Error.
          content:
            application/json:
              example:
                message: Failed to fetch latency trend!
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: X-API-KEY

````

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