> ## Documentation Index > Fetch the complete documentation index at: https://docs.baseten.co/llms.txt > Use this file to discover all available pages before exploring further. # Update chainlet environment's autoscaling settings > Updates a chainlet environment's autoscaling settings and returns the updated chainlet environment settings. ## OpenAPI ````yaml patch /v1/chains/{chain_id}/environments/{env_name}/chainlet_settings/autoscaling_settings openapi: 3.1.0 info: description: REST API for management of Baseten resources title: Baseten management API version: 1.0.0 servers: - url: https://api.baseten.co security: - ApiKeyAuth: [] paths: /v1/chains/{chain_id}/environments/{env_name}/chainlet_settings/autoscaling_settings: parameters: - $ref: '#/components/parameters/chain_id' - $ref: '#/components/parameters/env_name' patch: summary: Update a chainlet environment's autoscaling settings description: >- Updates a chainlet environment's autoscaling settings and returns the updated chainlet environment settings. requestBody: content: application/json: schema: $ref: >- #/components/schemas/UpdateChainletEnvironmentAutoscalingSettingsRequestV1 required: true responses: '200': description: '' content: application/json: schema: $ref: '#/components/schemas/UpdateAutoscalingSettingsResponseV1' x-codeSamples: - lang: bash source: >- curl --request PATCH \ --url https://api.baseten.co/v1/chains/{chain_id}/environments/{env_name}/chainlet_settings/autoscaling_settings \ --header "Authorization: Api-Key $BASETEN_API_KEY" \ --data '{ "updates": [ { "autoscaling_settings": { "autoscaling_window": 800, "concurrency_target": 4, "max_replica": 3, "min_replica": 2, "scale_down_delay": 63, "target_in_flight_tokens": null, "target_utilization_percentage": null }, "chainlet_name": "HelloWorld" } ] }' - lang: python source: >- import requests import os API_KEY = os.environ.get("BASETEN_API_KEY", "") url = "https://api.baseten.co/v1/chains/{chain_id}/environments/{env_name}/chainlet_settings/autoscaling_settings" headers = {"Authorization": f"Api-Key {API_KEY}"} response = requests.request( "PATCH", url, headers=headers, json={'updates': [{'autoscaling_settings': {'autoscaling_window': 800, 'concurrency_target': 4, 'max_replica': 3, 'min_replica': 2, 'scale_down_delay': 63, 'target_in_flight_tokens': None, 'target_utilization_percentage': None}, 'chainlet_name': 'HelloWorld'}]} ) print(response.text) components: parameters: chain_id: schema: type: string name: chain_id in: path required: true env_name: schema: type: string name: env_name in: path required: true schemas: UpdateChainletEnvironmentAutoscalingSettingsRequestV1: description: >- A request to update the autoscaling settings for a multiple chainlets in an environment. If a chainlet name doesn't exist, an error is returned. properties: updates: description: >- Mapping of chainlet name to the desired chainlet autoscaling settings. If the chainlet name doesn't exist, an error is returned. examples: - - autoscaling_settings: autoscaling_window: 800 concurrency_target: 4 max_replica: 3 min_replica: 2 scale_down_delay: 63 target_in_flight_tokens: null target_utilization_percentage: null chainlet_name: HelloWorld - - autoscaling_settings: autoscaling_window: null concurrency_target: null max_replica: null min_replica: 0 scale_down_delay: null target_in_flight_tokens: null target_utilization_percentage: null chainlet_name: HelloWorld - autoscaling_settings: autoscaling_window: null concurrency_target: null max_replica: null min_replica: 0 scale_down_delay: null target_in_flight_tokens: null target_utilization_percentage: null chainlet_name: RandInt items: $ref: >- #/components/schemas/ChainletEnvironmentAutoscalingSettingsUpdateV1 title: Updates type: array required: - updates title: UpdateChainletEnvironmentAutoscalingSettingsRequestV1 type: object UpdateAutoscalingSettingsResponseV1: description: The response to a request to update autoscaling settings. properties: status: $ref: '#/components/schemas/UpdateAutoscalingSettingsStatusV1' description: Status of the request to update autoscaling settings message: description: >- A message describing the status of the request to update autoscaling settings title: Message type: string required: - status - message title: UpdateAutoscalingSettingsResponseV1 type: object ChainletEnvironmentAutoscalingSettingsUpdateV1: description: The request to update the autoscaling settings for a chainlet. properties: chainlet_name: description: Name of the chainlet examples: - HelloWorld title: Chainlet Name type: string autoscaling_settings: $ref: '#/components/schemas/UpdateAutoscalingSettingsV1' description: Autoscaling settings for the chainlet examples: - autoscaling_window: 800 concurrency_target: 3 max_replica: 2 min_replica: 1 scale_down_delay: 60 target_in_flight_tokens: null target_utilization_percentage: null required: - chainlet_name - autoscaling_settings title: ChainletEnvironmentAutoscalingSettingsUpdateV1 type: object UpdateAutoscalingSettingsStatusV1: description: The status of a request to update autoscaling settings. enum: - ACCEPTED - QUEUED - UNCHANGED title: UpdateAutoscalingSettingsStatusV1 type: string UpdateAutoscalingSettingsV1: additionalProperties: false description: >- A request to update autoscaling settings for a deployment. All fields are optional, and we only update ones passed in. properties: min_replica: anyOf: - type: integer - type: 'null' default: null description: Minimum number of replicas examples: - 0 title: Min Replica max_replica: anyOf: - type: integer - type: 'null' default: null description: Maximum number of replicas examples: - 7 title: Max Replica autoscaling_window: anyOf: - type: integer - type: 'null' default: null description: Timeframe of traffic considered for autoscaling decisions examples: - 600 title: Autoscaling Window scale_down_delay: anyOf: - type: integer - type: 'null' default: null description: Waiting period before scaling down any active replica examples: - 120 title: Scale Down Delay concurrency_target: anyOf: - type: integer - type: 'null' default: null description: Number of requests per replica before scaling up examples: - 2 title: Concurrency Target target_utilization_percentage: anyOf: - type: integer - type: 'null' default: null description: Target utilization percentage for scaling up/down. examples: - 70 title: Target Utilization Percentage target_in_flight_tokens: anyOf: - type: integer - type: 'null' default: null description: >- Target number of in-flight tokens for autoscaling decisions. Early access only. examples: - 40000 title: Target In Flight Tokens title: UpdateAutoscalingSettingsV1 type: object securitySchemes: ApiKeyAuth: type: apiKey in: header name: Authorization description: >- You must specify the scheme 'Api-Key' in the Authorization header. For example, `Authorization: Api-Key ` ````