> ## Documentation Index > Fetch the complete documentation index at: https://docs.syrto.ai/llms.txt > Use this file to discover all available pages before exploring further. # Metrics > Free. ## OpenAPI ````yaml api-reference/openapi.standard.json GET /metrics openapi: 3.1.0 info: title: Syrto API - standard endpoints version: 1.7.0 description: >- Financial, corporate and market data on Italian companies. Every call answers `200 { data, meta }`; `meta.usage.quantity` is what the call consumed, in credits, and `meta.warnings` lists any non-fatal caveats (empty when there are none). Every field is always present and unknown values are null. Percentages are fractions (0.15 = 15%). **Authentication.** Every call needs an API key, sent as `Authorization: Bearer sk_...` over HTTPS - never in a URL. Keys are scoped to your organization: admins create and revoke them in the Syrto dashboard (https://dashboard.syrto.ai/api-keys). A missing or unrecognised key is a 401 (`missing_api_key`, `invalid_api_key`); a 503 `auth_unavailable` means the key could not be checked right now, so retry with backoff rather than rotating it. **Billing basis.** negativities, rna and structure bill once per legal entity: the individual and consolidated records of the same company count once. Every other endpoint bills per record (or per call), so individual and consolidated count separately. A tax id always resolves to a single record (`statementBasis`, individual by default): a company is billed twice only when both of its companyIds are passed. A market call is priced per call, whatever the size of its set: omitting `filters` and `seedId`, or sending `filters: {}`, is the whole of Italy, at the same price. notFound entries are never billed, and neither is any error. servers: - url: https://api.syrto.ai security: [] tags: - name: Company data description: Identity, risk flags, state aid and branches of known companies. - name: Governance description: Ownership, officers, beneficial owners and group. - name: Financials description: Statement items, reclassified statements, indices and spider graph. - name: Composite description: Comparable companies. - name: Search description: The companies of a filtered set, row by row. - name: Market description: Aggregates over a filtered set. - name: Catalog description: Free reference data. paths: /metrics: get: tags: - Catalog summary: 'The 55 indices: slug, localized name, category, kind, unit and formula.' description: Free. operationId: metrics parameters: - schema: type: string enum: - it - en description: >- Language of metric names, labels and descriptions (never of field names or slugs). Omitted: the account's default. required: false description: >- Language of metric names, labels and descriptions (never of field names or slugs). Omitted: the account's default. name: language in: query responses: '200': description: >- The 55 indices: slug, localized name, category, kind, unit and formula. content: application/json: schema: type: object properties: data: $ref: '#/components/schemas/MetricCatalog' meta: $ref: '#/components/schemas/ResponseMeta' required: - data - meta '401': description: missing_api_key | invalid_api_key content: application/json: schema: $ref: '#/components/schemas/Error' '402': description: credits_exhausted | limit_reached content: application/json: schema: $ref: '#/components/schemas/Error' '403': description: client_not_configured | not_entitled content: application/json: schema: $ref: '#/components/schemas/Error' '404': description: unknown_endpoint | not_found content: application/json: schema: $ref: '#/components/schemas/Error' '422': description: invalid_params content: application/json: schema: $ref: '#/components/schemas/Error' '429': description: rate_limited headers: Retry-After: description: >- Seconds to wait before retrying. Neither a 429 nor a 504 is billed. A 504 whose query had reached the data service leaves it running, and its answer is cached, so the same call after this delay is usually fast. schema: type: integer minimum: 0 content: application/json: schema: $ref: '#/components/schemas/Error' '500': description: internal_error content: application/json: schema: $ref: '#/components/schemas/Error' '502': description: upstream_error content: application/json: schema: $ref: '#/components/schemas/Error' '503': description: auth_unavailable | entitlement_unavailable content: application/json: schema: $ref: '#/components/schemas/Error' '504': description: upstream_timeout headers: Retry-After: description: >- Seconds to wait before retrying. Neither a 429 nor a 504 is billed. A 504 whose query had reached the data service leaves it running, and its answer is cached, so the same call after this delay is usually fast. schema: type: integer minimum: 0 content: application/json: schema: $ref: '#/components/schemas/Error' security: - bearerAuth: [] components: schemas: MetricCatalog: type: object properties: items: type: array items: $ref: '#/components/schemas/MetricDefinition' required: - items ResponseMeta: type: object properties: requestId: type: string endpoint: type: string usage: $ref: '#/components/schemas/Usage' warnings: type: array items: $ref: '#/components/schemas/Warning' description: Empty when there are none. required: - requestId - endpoint - usage - warnings Error: type: object properties: error: type: object properties: code: type: string enum: - missing_api_key - invalid_api_key - credits_exhausted - limit_reached - client_not_configured - not_entitled - unknown_endpoint - not_found - payload_too_large - unsupported_media_type - invalid_params - rate_limited - internal_error - upstream_error - auth_unavailable - entitlement_unavailable - upstream_timeout message: type: string requestId: type: string details: type: array items: type: object properties: path: type: string message: type: string required: - path - message required: - code - message - requestId required: - error MetricDefinition: type: object properties: slug: $ref: '#/components/schemas/MetricSlug' name: type: string description: Localized; not part of the contract. category: $ref: '#/components/schemas/MetricCategory' kind: type: string enum: - index - absolute description: >- `absolute` is an amount: comparing it with marketValue says how BIG the company is against its peers, not how good. unit: $ref: '#/components/schemas/MetricUnit' formulaLatex: type: - string - 'null' description: >- How the metric is computed, as a LaTeX formula (render it). Null for items read directly from the statement. required: - slug - name - category - kind - unit - formulaLatex Usage: type: object properties: quantity: type: number unit: type: string required: - quantity - unit Warning: type: object properties: code: type: string message: type: string required: - code - message MetricSlug: type: string enum: - revenues_from_sales_and_services - value_of_production - profit - added_value - ebitda - ebit - added_value_employee - ebitda_margin - ebit_margin - roe - roa - sales_assets - revenue_cagr_3_years - ebitda_cagr_3_years - personnel_cost_to_revenue - raw_materials_contribution - services_and_leases_contribution - net_working_capital - ufcf - cash_ratio - quick_ratio - secondary_liquidity - days_sales_outstanding - days_sales_outstanding_commercial_receivables - days_payable_outstanding - dpo_commercial_debt - days_sales_inventory - cash_conversion_cycle - cash_conversion_cycle_commercial - net_financial_position - current_net_financial_position - net_financial_position_ebitda - debt_ebitda_ratio - indeb_ratio - financial_leverage - over_indebtedness_ratio - interest_coverage_ratio_ebitda_based - debt_service_cover_ratio_ebitda_version - debt_service_cover_ratio_cash_flow_based - cost_borrowed_money - financial_sustainability - financial_charges_on_nfp - capex - invested_capital - equity_ratio - self_coverage - financial_debt_net_worth - non_curr_liabilities_fixed_asset_ratio - capex_sales_ratio - debt_on_revenue - short_term_debt_on_revenue - current_debt_to_total_debt_ratio - curr_asset_total_asset_ratio - cash_curr_asset_ratio - tfr_contribution description: >- One of the 55 indices; GET /metrics (free) lists them with their names, units and formulas. Slugs are part of the contract; names are localized. MetricCategory: type: string enum: - profitability - liquidity - solvency - structure MetricUnit: type: string enum: - eur - pct - ratio - days - eur_per_head - count description: >- `pct` is a fraction, never multiplied: 0.15 is 15%, and it may exceed 1 or be negative. `eur_per_head` is euro per employee. securitySchemes: bearerAuth: type: http scheme: bearer description: >- Org-scoped WorkOS API key (sk_...), sent as `Authorization: Bearer `. Admins create and revoke keys in the Syrto dashboard: https://dashboard.syrto.ai/api-keys ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.