> ## Documentation Index > Fetch the complete documentation index at: https://langwatch.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Get budget > One budget, in exactly the row shape `GET /budgets` returns, including the live spend enrichment and the per-person `end_users_seen` / `end_users_over` standing on attributed-user templates. Archived budgets are not returned. `spend_available: false` means spend could not be totalled, and `spent_usd` / `spent_nano_usd` are null rather than a figure that cannot be told apart from zero spend. A per-person template reports null there too, because one allowance per person has no single total; each person's figure is in `GET /spend-summaries` and the seat buckets. ## OpenAPI ````yaml GET /api/gateway/v1/budgets/{id} openapi: 3.1.0 info: title: LangWatch API version: 1.0.0 description: LangWatch openapi spec servers: - url: https://app.langwatch.ai security: - project_api_key: [] paths: /api/gateway/v1/budgets/{id}: get: tags: - Budgets summary: Get budget description: >- One budget, in exactly the row shape `GET /budgets` returns, including the live spend enrichment and the per-person `end_users_seen` / `end_users_over` standing on attributed-user templates. Archived budgets are not returned. `spend_available: false` means spend could not be totalled, and `spent_usd` / `spent_nano_usd` are null rather than a figure that cannot be told apart from zero spend. A per-person template reports null there too, because one allowance per person has no single total; each person's figure is in `GET /spend-summaries` and the seat buckets. operationId: getApiGatewayV1BudgetsById parameters: - schema: type: string in: path name: id required: true responses: '200': description: The budget content: application/json: schema: type: object properties: budget: type: object properties: id: type: string organization_id: type: string scope_type: type: string enum: - organization - team - project - virtual_key - principal - group - attributed_user scope_id: type: string name: type: string description: type: - string - 'null' window: type: string enum: - minute - hour - day - week - month - total - manual on_breach: type: string enum: - block - warn limit_usd: type: string description: >- Display value. Decimal string, up to 9 fractional digits, trailing zeros trimmed, never exponent notation. Use limit_nano_usd for arithmetic. limit_nano_usd: type: - integer - 'null' description: >- Canonical integer amount, nano-USD. Null past the safe integer range, where limit_usd still reads. spent_usd: type: - string - 'null' description: >- Display value, null when spend_available is false. Decimal string, up to 9 fractional digits, trailing zeros trimmed, never exponent notation. Use spent_nano_usd for arithmetic. spent_nano_usd: type: - integer - 'null' description: >- Canonical integer spend, nano-USD. Null when spend is unavailable. Derived from the same integer as spent_usd, so the pair always agrees. timezone: type: - string - 'null' provider_key: type: - string - 'null' external_id: type: - string - 'null' metadata: type: object additionalProperties: type: string current_period_started_at: type: string description: >- Start of the period `spent_usd` covers, computed at read time. For an anchored budget this is its own cycle's start, not the calendar period's. resets_at: type: string description: >- When the current period gives way to the next. Far-future for total and manual windows, which do not roll on their own. cycle_anchor_at: type: - string - 'null' description: >- The instant this budget's cycle is phased to. Null means no anchor: a calendar-aligned cyclic window, or one of the two windows that do not cycle (total, manual). last_reset_at: type: - string - 'null' archived_at: type: - string - 'null' created_at: type: string member_count: type: integer end_users_seen: type: integer end_users_over: type: integer required: - id - organization_id - scope_type - scope_id - name - description - window - on_breach - limit_usd - limit_nano_usd - spent_usd - spent_nano_usd - timezone - provider_key - external_id - metadata - current_period_started_at - resets_at - cycle_anchor_at - last_reset_at - archived_at - created_at spend_available: type: boolean required: - budget - spend_available '400': description: Bad Request content: application/json: schema: type: object properties: error: type: object properties: type: type: string code: type: string message: type: string meta: type: object additionalProperties: {} trace_id: type: string span_id: type: string required: - type - code - message required: - error '401': description: Unauthorized content: application/json: schema: type: object properties: error: type: object properties: type: type: string code: type: string message: type: string meta: type: object additionalProperties: {} trace_id: type: string span_id: type: string required: - type - code - message required: - error '403': description: Forbidden content: application/json: schema: type: object properties: error: type: object properties: type: type: string code: type: string message: type: string meta: type: object additionalProperties: {} trace_id: type: string span_id: type: string required: - type - code - message required: - error '404': description: Not found content: application/json: schema: type: object properties: error: type: object properties: type: type: string code: type: string message: type: string meta: type: object additionalProperties: {} trace_id: type: string span_id: type: string required: - type - code - message required: - error '500': description: Internal Server Error content: application/json: schema: type: object properties: error: type: object properties: type: type: string code: type: string message: type: string meta: type: object additionalProperties: {} trace_id: type: string span_id: type: string required: - type - code - message required: - error components: securitySchemes: project_api_key: type: apiKey in: header name: X-Auth-Token description: >- Project API key for sending traces and accessing project-scoped resources. Format: sk-lw-... (no underscore). Obtain one by creating a project via the Admin API or the LangWatch UI. ````