> ## 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. # Similar companies > Semantic search on the seed's activity description within a revenue band and an area, best match first; fewer than ten when fewer reach a 0.7 similarity. Price: 150 credits. 404, never billed, when no comparable is found. ## OpenAPI ````yaml api-reference/openapi.standard.json GET /companies/{id}/similar 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: /companies/{id}/similar: get: tags: - Composite summary: >- Ten comparable companies, by activity description, revenue band and area. description: >- Semantic search on the seed's activity description within a revenue band and an area, best match first; fewer than ten when fewer reach a 0.7 similarity. Price: 150 credits. 404, never billed, when no comparable is found. operationId: company-similar parameters: - schema: type: string minLength: 1 maxLength: 100 description: >- A companyId (Syrto id of one statement record, starts with `Zm86`) or a tax id (11-digit partita IVA or 16-character codice fiscale). A tax id resolves to the record selected by `statementBasis`. example: '02579690039' required: true description: >- A companyId (Syrto id of one statement record, starts with `Zm86`) or a tax id (11-digit partita IVA or 16-character codice fiscale). A tax id resolves to the record selected by `statementBasis`. name: id in: path - schema: type: - number - 'null' minimum: 0 description: 'EUR. Default: the seed''s revenue - 30%.' required: false description: 'EUR. Default: the seed''s revenue - 30%.' name: revenueMin in: query - schema: type: - number - 'null' minimum: 0 description: 'EUR. Default: the seed''s revenue + 30%.' required: false description: 'EUR. Default: the seed''s revenue + 30%.' name: revenueMax in: query - schema: type: array items: type: string minItems: 1 maxItems: 20 description: >- NUTS codes. Default: the seed's macro area for size XS/S/M, all Italy for L. required: false description: >- NUTS codes. Default: the seed's macro area for size XS/S/M, all Italy for L. style: form explode: false name: geography in: query - schema: type: integer minimum: 2015 maximum: 2100 description: >- Financial year (2015-2100). Omitted: the latest filed statement. Forecast years are never returned. required: false description: >- Financial year (2015-2100). Omitted: the latest filed statement. Forecast years are never returned. name: year in: query - 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: >- Ten comparable companies, by activity description, revenue band and area. content: application/json: schema: type: object properties: data: $ref: '#/components/schemas/SimilarCompanies' 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: SimilarCompanies: type: object properties: seedCompanyId: type: string year: type: integer description: The seed's reference year. revenueRangeApplied: $ref: '#/components/schemas/RevenueRange' geographyApplied: type: array items: type: string description: NUTS codes; empty = Italy. resultsCount: type: integer minimum: 0 maximum: 10 results: type: array items: $ref: '#/components/schemas/SimilarCompany' maxItems: 10 description: >- Best match first. The seed and its twin statement record are excluded. required: - seedCompanyId - year - revenueRangeApplied - geographyApplied - resultsCount - results 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 RevenueRange: type: object properties: min: type: - number - 'null' max: type: - number - 'null' required: - min - max SimilarCompany: allOf: - $ref: '#/components/schemas/CompanyHeader' - type: object properties: matchScore: type: number minimum: 0 maximum: 1 description: >- Similarity of the activity description; the tail of the list degrades. activityOverview: type: - string - 'null' naceClass: type: - string - 'null' nuts3: type: - string - 'null' year: type: integer description: The comparable's own statement year. financialStatementDate: type: - string - 'null' format: date description: >- Date of the financial statement the figures come from: the financial year end it is made up to (data di chiusura dell'esercizio - 31 December for most companies, 30 June for a club closing in June). Cite it when reporting a discrepancy. revenuesFromSalesAndServices: type: - number - 'null' ebitdaMargin: type: - number - 'null' ebitMargin: type: - number - 'null' employeeCount: type: - integer - 'null' revenueCagr3Years: type: - number - 'null' required: - matchScore - activityOverview - naceClass - nuts3 - year - financialStatementDate - revenuesFromSalesAndServices - ebitdaMargin - ebitMargin - employeeCount - revenueCagr3Years 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 CompanyHeader: type: object properties: companyId: type: string description: >- Syrto id of this statement record. Individual and consolidated differ. legalName: type: - string - 'null' taxId: type: - string - 'null' description: Codice fiscale / partita IVA. consolidated: type: boolean description: Whether these figures are the consolidated (group) statement. required: - companyId - legalName - taxId - consolidated 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.