> ## Documentation Index > Fetch the complete documentation index at: https://docs.eversince.ai/llms.txt > Use this file to discover all available pages before exploring further. # level audio > Bring the cut to delivery level: every speaking clip to what platforms normalise to, so takes from different days, an upload and a generated voiceover sit together; music and effects move by the amount the speech moved. Nothing is raised into distortion: a clip whose peak would cross the ceiling stops there and is named. Written as ordinary clip volume, so preview and every export carry it. mode offset moves the whole cut by one amount and matches nothing, for a piece already balanced by hand. check_timeline reports whether it is needed and what is left after. Free, except measuring sound the first time: cloud processing. ## OpenAPI ````yaml /openapi.json post /tools/level_audio openapi: 3.1.0 info: title: Eversince API version: '1' description: >- Every Eversince tool as one POST call, plus the routes beside them: the tool list, account and keys, uploads, webhooks and models. The prose is at https://docs.eversince.ai. servers: - url: https://eversince.ai/api/v1 security: - bearer: [] tags: - name: Discovery description: The tool list, the same on the MCP server, the REST API and the CLI. - name: Workspace description: Jobs, balances, settings, templates, skills and the overview. - name: Library description: >- Items, search, import, reading media, comments, boards, calendars, the brand kit and public links. - name: Timeline description: 'Video editing: timelines, clips, captions, sound, language and rendering.' - name: Canvas description: 'Still editing: canvases, slides, layers and rendering.' - name: Generation description: Image, video and audio generation, upscaling, cutouts and models. - name: Research description: 'What platforms publish: pulling and keeping posts.' - name: Account description: Balances, keys, workspaces and script sessions. - name: Uploads description: Files into the library by presigned upload or by URL. - name: Webhooks description: Job results posted to a URL as they complete. - name: Models description: Generation models and cost estimates. paths: /tools/level_audio: post: tags: - Timeline summary: level audio description: >- Bring the cut to delivery level: every speaking clip to what platforms normalise to, so takes from different days, an upload and a generated voiceover sit together; music and effects move by the amount the speech moved. Nothing is raised into distortion: a clip whose peak would cross the ceiling stops there and is named. Written as ordinary clip volume, so preview and every export carry it. mode offset moves the whole cut by one amount and matches nothing, for a piece already balanced by hand. check_timeline reports whether it is needed and what is left after. Free, except measuring sound the first time: cloud processing. operationId: level_audio parameters: - $ref: '#/components/parameters/IdempotencyKey' - $ref: '#/components/parameters/WorkspaceId' requestBody: required: true content: application/json: schema: type: object properties: timeline_id: type: string description: The timeline id. mode: description: >- match (default) brings every speaking clip to the target, so takes from different sources agree. offset moves the whole cut by one amount and keeps the mix as it is, for a piece already balanced by hand. type: string enum: - match - offset platform: description: >- Where it plays, which sets the target: youtube, instagram and tiktok -14 LUFS, podcast -16, broadcast -23. Default youtube. type: string enum: - youtube - instagram - tiktok - podcast - broadcast target_lufs: description: A target of its own, over platform. type: number minimum: -30 maximum: -6 clip_ids: description: >- Write only these clips. The level is still worked out over the whole cut, so one clip of an interview is matched to the conversation rather than to itself. type: array items: type: string if_revision: description: >- The revision get_timeline returned. A stale one fails with revision_conflict instead of applying; so does no revision once a user edited the timeline in the app since this connection last read it. anyOf: - type: string - type: integer context: description: 'Optional: one sentence shown to the user beside this action.' type: string maxLength: 600 required: - timeline_id responses: '200': description: >- Done, or a job started for work that runs longer (follow it with get_jobs). content: application/json: schema: type: object required: - ok - data - meta properties: ok: const: true data: type: object additionalProperties: true meta: type: object properties: request_id: type: string cost: $ref: '#/components/schemas/Cost' cloud_processing: $ref: '#/components/schemas/CloudProcessing' media: type: array items: type: object additionalProperties: true default: $ref: '#/components/responses/Error' components: parameters: IdempotencyKey: name: Idempotency-Key in: header required: false schema: type: string description: >- Retry a paid dispatch safely: the same key returns the job already dispatched instead of charging again. WorkspaceId: name: x-workspace-id in: header required: false schema: type: string description: The workspace this one call acts in, when it is not the key's own. schemas: Cost: type: object description: AI credits the call cost. additionalProperties: true CloudProcessing: type: object description: Cloud processing the call used, and what is left. properties: ran_on: const: cloud minutes: type: number queued_minutes: type: number left_minutes: type: number bought_minutes: type: number note: type: string Error: type: object required: - ok - error properties: ok: const: false error: type: object required: - code - message - retryable properties: code: type: string message: type: string description: What went wrong, in words to act on. retryable: type: boolean suggested_action: type: string description: The next step that works. cloud_processing: $ref: '#/components/schemas/CloudProcessing' responses: Error: description: The call was refused or failed. content: application/json: schema: $ref: '#/components/schemas/Error' securitySchemes: bearer: type: http scheme: bearer description: >- An API key (es_live_…) from Settings, under API keys, or an OAuth access token. ````