> ## Documentation Index > Fetch the complete documentation index at: https://docs.langchain.com/llms.txt > Use this file to discover all available pages before exploring further. # Load a browser's extensions (Beta) > Beta: load the unpacked extensions placed in the browser's /var/lib/browserd/extensions (one per directory) that its Chrome does not have yet. Chrome loads them while running, so windows, tabs and connections are left as they are. Extensions already loaded stay loaded, even if removed from the directory, until Chrome next launches. ## OpenAPI ````yaml /langsmith/langsmith-platform-openapi.json post /api/v2/sandboxes/browsers/{name}/extensions/load openapi: 3.1.0 info: title: LangSmith description: >+ The LangSmith API is used to programmatically create and manage LangSmith resources. ## Host https://api.smith.langchain.com ## Authentication To authenticate with the LangSmith API, set the `X-Api-Key` header to a valid [LangSmith API key](https://docs.langchain.com/langsmith/create-account-api-key#create-an-api-key). version: 0.1.0 servers: - url: / security: [] tags: - name: run x-group: Tracing - name: runs x-group: Tracing - name: sessions x-group: Tracing - name: tracer-sessions x-group: Tracing - name: threads x-group: Threads - name: datasets x-group: Datasets - name: examples x-group: Datasets - name: evaluators x-group: Evaluation - name: experiment-view-overrides x-group: Evaluation - name: experiments x-group: Evaluation - name: annotation-queues x-group: Feedback & Annotation - name: annotation_queues x-group: Feedback & Annotation - name: feedback x-group: Feedback & Annotation - name: feedback-configs x-group: Feedback & Annotation - name: alert_rules x-group: Monitoring - name: bulk-exports x-group: Monitoring - name: charts x-group: Monitoring - name: commits x-group: Prompts & Playground - name: directories x-group: Prompts & Playground - name: hub_environments x-group: Prompts & Playground - name: playground-settings x-group: Prompts & Playground - name: prompt-webhooks x-group: Prompts & Playground - name: prompts x-group: Prompts & Playground - name: tag-transitions x-group: Prompts & Playground - name: comments x-group: Prompt Hub - name: likes x-group: Prompt Hub - name: optimization-jobs x-group: Prompt Hub - name: ownerships x-group: Prompt Hub - name: repos x-group: Prompt Hub - name: settings x-group: Prompt Hub - name: tags x-group: Prompt Hub - name: integrations x-group: Integrations & Tools - name: mcp x-group: Integrations & Tools - name: mcp_vendors x-group: Integrations & Tools - name: oauth x-group: Integrations & Tools - name: tools x-group: Integrations & Tools - name: gateway-policies x-group: LLM Gateway - name: sandboxes x-group: Sandboxes - name: issues x-group: Issues - name: issues-agent x-group: Issues - name: Organizations x-group: Administration - name: SCIM Tokens x-group: Administration - name: TTL Settings x-group: Administration - name: access_policies x-group: Administration - name: api-key x-group: Administration - name: audit-logs x-group: Administration - name: auth x-group: Administration - name: aws_marketplace x-group: Administration - name: data_planes x-group: Administration - name: me x-group: Administration - name: orgs x-group: Administration - name: service-accounts x-group: Administration - name: tenant x-group: Administration - name: ttl-settings x-group: Administration - name: usage-limits x-group: Administration - name: workspaces x-group: Administration - name: ace x-group: System - name: backfills x-group: System - name: features x-group: System - name: info x-group: System - name: model-price-map x-group: System - name: public x-group: System - name: fleet orgs - name: fleet secrets - name: fleet tenants - name: fleet threads x-hidden: true - name: fleet users - name: productfeedback x-hidden: true - name: usage paths: /api/v2/sandboxes/browsers/{name}/extensions/load: post: tags: - sandboxes summary: Load a browser's extensions (Beta) description: >- Beta: load the unpacked extensions placed in the browser's /var/lib/browserd/extensions (one per directory) that its Chrome does not have yet. Chrome loads them while running, so windows, tabs and connections are left as they are. Extensions already loaded stay loaded, even if removed from the directory, until Chrome next launches. parameters: - description: Browser name or ID name: name in: path required: true schema: type: string responses: '200': description: OK content: application/json: schema: $ref: '#/components/schemas/sandboxes.LoadBrowserExtensionsResponse' '400': description: An extension could not be loaded content: application/json: schema: $ref: '#/components/schemas/sandboxes.ErrorResponse' '404': description: Browser not found content: application/json: schema: $ref: '#/components/schemas/sandboxes.ErrorResponse' '409': description: The browser is not running content: application/json: schema: $ref: '#/components/schemas/sandboxes.ErrorResponse' '501': description: The browser beta is not enabled content: application/json: schema: $ref: '#/components/schemas/sandboxes.ErrorResponse' security: - API Key: [] - Tenant ID: [] - Bearer Auth: [] components: schemas: sandboxes.LoadBrowserExtensionsResponse: type: object properties: loaded: description: >- Loaded are the ids of the extensions this call loaded; empty when Chrome already had every extension in the directory. type: array items: type: string sandboxes.ErrorResponse: type: object properties: detail: type: object properties: error: type: string error_id: type: string message: type: string securitySchemes: API Key: type: apiKey in: header name: X-API-Key Tenant ID: type: apiKey in: header name: X-Tenant-Id Bearer Auth: type: http description: >- Bearer tokens are used to authenticate from the UI. Must also specify x-tenant-id or x-organization-id (for org scoped apis). scheme: bearer ````