> ## Documentation Index > Fetch the complete documentation index at: https://docs.vturb.com/llms.txt > Use this file to discover all available pages before exploring further. # Liveness probe > Liveness probe. Returns 200 while the service is up. ## OpenAPI ````yaml /openapi.yaml get /up openapi: 3.1.0 info: title: VTurb General API version: v1 description: | Public REST API for VTurb. Dev-first and agents-first: every endpoint is generated from request specs (contract = real behavior). See ADR-0015/0016. contact: name: VTurb API url: https://vturb.com servers: - url: https://api.vturb.com security: [] paths: /up: get: tags: - Health summary: Liveness probe description: Liveness probe. Returns 200 while the service is up. responses: '200': description: returns 200 content: text/html: schema: type: string example: >- ````