> ## Documentation Index
> Fetch the complete documentation index at: https://vastai-80aa3a82-auto-openapi-update-8483c1e9.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Save Templates

> Saves one or more templates to the authenticated user's library, creating new template records or linking existing ones as appropriate.



## OpenAPI

````yaml /api-reference/openapi.yaml post /api/v0/users/{user_id}/templates/
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/users/{user_id}/templates/:
    post:
      tags:
        - Accounts
      summary: Save Templates
      description: >-
        Saves one or more templates to the authenticated user's library,
        creating new template records or linking existing ones as appropriate.
      parameters:
        - name: user_id
          in: path
          required: true
          schema:
            type: integer
          description: ID of the user saving templates (URL path parameter)
      requestBody:
        content:
          application/json:
            schema:
              type: object
              properties:
                templates:
                  type: array
                  description: >-
                    Array of template objects to save; each may include an id if
                    updating an existing template (required)
                referral_template_id:
                  type: integer
                  description: >-
                    ID of a referral template to ensure remains visible at the
                    top of the user's template list
                  example: 999
                is_an_edit:
                  type: boolean
                  description: >-
                    When true, marks previous template versions as deleted in
                    the user's library after saving new versions
      responses:
        '200':
          description: >-
            Returns {success: true, templates: [...]} with the user's created
            templates
          content:
            application/json:
              schema:
                type: object
                properties:
                  success:
                    type: boolean
                    description: Always true
                  templates:
                    type: array
                    items:
                      type: object
                    description: >-
                      Updated list of templates created by and associated with
                      the user
        '400':
          description: >-
            Missing templates list: {success: false, error: "invalid_args", msg:
            "templates cannot be null"}; or docker credentials missing access
            token: "templates with docker username must have an access token"
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
      security:
        - BearerAuth: []
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
        msg:
          type: string
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: API key must be provided in the Authorization header

````