> ## Documentation Index
> Fetch the complete documentation index at: https://vastai-80aa3a82-fix-google-validation-docs-404s.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# show logs

> Request logs from a specific instance. The logs will be uploaded to S3 and can be retrieved from a generated URL. Supports both container logs and daemon system logs.

CLI Usage: `vastai show logs <instance_id> [--tail <lines>] [--filter <grep>] [--daemon-logs]`



## OpenAPI

````yaml /api-reference/openapi.yaml put /api/v0/instances/request_logs/{id}
openapi: 3.1.0
info:
  title: Vast.ai API
  description: >-
    Vast.ai REST API for managing GPU cloud instances, machine operations, and
    AI/ML workflows.


    ## AI Agent Quick-Start


    Install the CLI skill for your agent (Claude Code, Cursor, Windsurf, etc.):
      npx skills add vast-ai/vast-cli

    CLI reference:
    https://raw.githubusercontent.com/vast-ai/vast-cli/master/vastai/SKILL.md

    SDK reference:
    https://raw.githubusercontent.com/vast-ai/vast-cli/master/vastai_sdk/SKILL.md


    ## Auth

    All endpoints require `Authorization: Bearer $VAST_API_KEY`.

    Get your key at: https://cloud.vast.ai/manage-keys/


    ## Key Quirks

    - `gpu_ram` in CLI = GB; in REST API = MB (CLI auto-converts)

    - SSH keys must be registered BEFORE creating an instance (VM: no recovery;
    Docker: can add post-create)

    - `onstart` field is limited to 4048 characters -- gzip+base64 for longer
    scripts

    - `POST /api/v0/asks/{id}/` (create instance) returns `new_contract` as the
    instance ID, not `id`

    - Poll trap: if `actual_status` becomes `exited`, `unknown`, or `offline` it
    will never reach `running` -- destroy and retry
  version: 1.0.0
  contact:
    name: Vast.ai Support
    url: https://discord.gg/vast
servers:
  - url: https://console.vast.ai
    description: Production server
security:
  - BearerAuth: []
paths:
  /api/v0/instances/request_logs/{id}:
    put:
      tags:
        - Instances
      summary: show logs
      description: >-
        Request logs from a specific instance. The logs will be uploaded to S3
        and can be retrieved from a generated URL. Supports both container logs
        and daemon system logs.


        CLI Usage: `vastai show logs <instance_id> [--tail <lines>] [--filter
        <grep>] [--daemon-logs]`
      parameters:
        - name: id
          in: path
          required: true
          description: ID of the instance to get logs from
          schema:
            type: integer
      requestBody:
        required: false
        content:
          application/json:
            schema:
              type: object
              properties:
                tail:
                  type: string
                  description: Number of lines to show from end of logs
                  example: '1000'
                filter:
                  type: string
                  description: Grep filter to apply to log entries
                daemon_logs:
                  type: string
                  enum:
                    - 'true'
                  description: >-
                    If "true", fetch daemon system logs instead of container
                    logs
      responses:
        '200':
          description: Success response with S3 URL for log retrieval
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    example: true
                  result_url:
                    type: string
                    description: S3 URL where logs can be downloaded
                    example: https://s3.amazonaws.com/vast.ai/instance_logs/{hash}.log
                  msg:
                    type: string
                    description: Status message
        '403':
          description: Not authorized
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                    example: not_authorized
                  msg:
                    type: string
                    example: Not authorized to view logs for this instance
        '404':
          description: Instance not found
          content:
            application/json:
              schema:
                type: object
                properties:
                  error:
                    type: string
                    example: invalid_id
                  msg:
                    type: string
                    example: Invalid instance id.
      security:
        - BearerAuth: []
components:
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: API key must be provided in the Authorization header

````