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

# Create logs cohorts

> Requires scopes: traces:write



## OpenAPI

````yaml /api-reference/openapi.json post /api/logs/cohorts
openapi: 3.1.0
info:
  title: EvalGate API
  version: 3.7.6
  description: EvalGate API. See docs/api-contract.md for stability commitments.
servers:
  - url: https://evalgate.com
    description: Production
  - url: http://localhost:3000
    description: Local
security: []
paths:
  /api/logs/cohorts:
    post:
      tags:
        - logs
      summary: Create logs cohorts
      description: 'Requires scopes: traces:write'
      operationId: post_logs_cohorts
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/PostApiLogsCohortsRequest'
      responses:
        '201':
          description: Successful response
          content:
            application/json:
              schema:
                $ref: >-
                  #/components/schemas/PostApiLogsCohortsResponse201ApplicationJson
        '400':
          $ref: '#/components/responses/ValidationError'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '404':
          $ref: '#/components/responses/NotFound'
        '409':
          $ref: '#/components/responses/Conflict'
        '429':
          $ref: '#/components/responses/RateLimited'
        '500':
          $ref: '#/components/responses/InternalError'
      security:
        - bearerAuth:
            - traces:write
components:
  schemas:
    PostApiLogsCohortsRequest:
      type: object
      properties:
        name:
          type: string
        query:
          type: string
      additionalProperties: false
      required:
        - name
        - query
    PostApiLogsCohortsResponse201ApplicationJson:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        createdAt:
          type: string
          format: date-time
        updatedAt:
          type: string
          format: date-time
        organizationId:
          $ref: '#/components/schemas/OrganizationId'
        query:
          type: object
          properties:
            version:
              type: number
              enum:
                - 1
            filters:
              type: array
              items:
                type: object
                properties:
                  field:
                    oneOf:
                      - type: string
                        enum:
                          - status
                      - type: string
                        enum:
                          - provenance
                      - type: string
                        enum:
                          - user
                      - type: string
                        enum:
                          - environment
                      - type: string
                        enum:
                          - provider
                      - type: string
                        enum:
                          - session
                      - type: string
                        enum:
                          - duration_ms
                      - type: string
                        enum:
                          - trace_id
                      - type: string
                        enum:
                          - source
                      - type: string
                        enum:
                          - score
                      - type: string
                        enum:
                          - prompt_version
                      - type: string
                        enum:
                          - backend
                      - type: string
                        enum:
                          - cost_usd
                      - type: string
                        enum:
                          - latency_ms
                      - type: string
                        enum:
                          - review_status
                      - type: string
                        enum:
                          - model
                      - type: string
                        enum:
                          - created
                      - type: string
                        enum:
                          - trace_name
                      - type: string
                        enum:
                          - failure_category
                      - type: string
                        enum:
                          - tag
                      - type: string
                        enum:
                          - tool_name
                      - type: string
                        enum:
                          - deployment_version
                      - type: string
                        enum:
                          - tool_error
                      - type: string
                        enum:
                          - tokens
                      - type: string
                        enum:
                          - alert_status
                  operator:
                    oneOf:
                      - type: string
                        enum:
                          - exists
                      - type: string
                        enum:
                          - in
                      - type: string
                        enum:
                          - gte
                      - type: string
                        enum:
                          - lte
                      - type: string
                        enum:
                          - eq
                      - type: string
                        enum:
                          - neq
                      - type: string
                        enum:
                          - gt
                      - type: string
                        enum:
                          - lt
                      - type: string
                        enum:
                          - contains
                  value:
                    oneOf:
                      - type: string
                      - type: number
                      - type: boolean
                        enum:
                          - false
                      - type: boolean
                        enum:
                          - true
                      - type: array
                        items:
                          type: string
                      - type: array
                        items:
                          type: number
                additionalProperties: false
                required:
                  - field
                  - operator
            freeText:
              type: string
            sort:
              type: array
              items:
                type: object
                properties:
                  field:
                    oneOf:
                      - type: string
                        enum:
                          - duration_ms
                      - type: string
                        enum:
                          - score
                      - type: string
                        enum:
                          - cost_usd
                      - type: string
                        enum:
                          - latency_ms
                      - type: string
                        enum:
                          - created
                  direction:
                    oneOf:
                      - type: string
                        enum:
                          - asc
                      - type: string
                        enum:
                          - desc
                additionalProperties: false
                required:
                  - field
                  - direction
          additionalProperties: false
          required:
            - version
            - filters
            - sort
        ownerId:
          type: string
      additionalProperties: false
      required:
        - id
        - name
        - createdAt
        - updatedAt
        - organizationId
        - query
        - ownerId
    OrganizationId:
      type: string
      format: uuid
    ApiError:
      type: object
      properties:
        error:
          type: object
          properties:
            code:
              type: string
              enum:
                - UNAUTHORIZED
                - FORBIDDEN
                - NOT_FOUND
                - VALIDATION_ERROR
                - RATE_LIMITED
                - CONFLICT
                - INTERNAL_ERROR
                - SERVICE_UNAVAILABLE
                - QUOTA_EXCEEDED
                - NO_ORG_MEMBERSHIP
                - CROSS_ORG_REFERENCE
                - INCOMPLETE
                - MALFORMED
            message:
              type: string
            details: {}
            requestId:
              type: string
              format: uuid
          required:
            - code
            - message
      required:
        - error
  responses:
    ValidationError:
      description: Validation error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    Unauthorized:
      description: Unauthorized
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    Forbidden:
      description: Forbidden
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    NotFound:
      description: Resource not found
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    Conflict:
      description: Conflict
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    RateLimited:
      description: Rate limit exceeded
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
    InternalError:
      description: Internal server error
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ApiError'
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      bearerFormat: API Key or Session Token

````