{ "openapi": "3.1.0", "info": { "title": "GetApi", "version": "0.0.1", "description": "## Authentication\n\nAll API endpoints require authentication. Include your API key in every request using **one** of the following methods:\n\n**Option 1 \u2014 X-Api-Key header (recommended)**\n```\nX-Api-Key: ga_live_xxxxxxxxxxxxxxxxxxxx\n```\n\n**Option 2 \u2014 Bearer token**\n```\nAuthorization: Bearer ga_live_xxxxxxxxxxxxxxxxxxxx\n```\n\nYou can generate and manage API keys in your [dashboard](https://getapi.nl/dashboard).\n\n## AI & Agent Payments (x402)\n\nSome endpoints support direct payments for AI agents via the **x402** protocol (https://www.x402.org).\nNo API key or account is needed. Send a normal request without key;\nthe server will respond with **HTTP 402** and a `PAYMENT-REQUIRED` header:\n\n```\nPAYMENT-REQUIRED: \n```\n\nThis base64 string contains, among other things, `network`, `asset`, `amount`, and `payTo`. \nYour agent signs an EIP-3009 *transferWithAuthorization* for the specified `amount` of USDC to that `payTo` address, \nencodes the signature as base64, and resubmits the request with:\n\n```\nPAYMENT-SIGNATURE: \n```\n\nThe server verifies the signature via a facilitator, provides the data, and settles the payment on-chain. \nThe success response includes a `PAYMENT-RESPONSE` header containing the transaction information. \nA one-time `nonce` prevents replay attacks. Payments are made in USDC on **Base**; \nthe price is determined by the `credit_cost` of the endpoint.", "contact": { "email": "info@wdnoord.nl" }, "x-guidance": "GetAPI.nl is een Nederlandse API-platform voor lookups en validaties (postcode,\nadres, kenteken, BTW, e-mail, KVK, IBAN, energiemaatwerk, overheidsdata). Elke\nendpoint accepteert een API key via de X-Api-Key header of Authorization:\nBearer .\n\nSommige endpoints zijn ook direct betaalbaar voor AI-agents via het x402-protocol\n(https://www.x402.org) zonder account of API key: stuur een verzoek zonder key,\nde server antwoordt met HTTP 402 en een PAYMENT-REQUIRED header (base64 JSON met\nnetwork, asset, amount, payTo). Teken daarna een EIP-3009 transferWithAuthorization\nvoor het gevraagde bedrag in USDC op Base en hertrail met een PAYMENT-SIGNATURE\nheader. De server verifieert, levert de data en settleert on-chain.\n\nTips voor agents:\n- Lees eerst de PAYMENT-REQUIRED header van een 402-antwoord; die is leidend.\n- Geef altijd de exact door de server gevraagde parameters mee.\n- Een endpoint met een \"x-payment-info\" blok vereist betaling voor gebruik." }, "servers": [ { "url": "https://api.getapi.nl", "description": "GetAPI" } ], "security": [ { "ApiKeyAuth": [] }, { "BearerAuth": [] }, { "ApiKeyAuth": [] }, { "BearerAuth": [] } ], "paths": { "/v1/kvk/{companyNumber}": { "get": { "operationId": "kvk.detail", "description": "Geeft het KVK Handelsregister basisprofiel voor een 8-cijferig KVK-nummer.\nVelden conform KVK Handelsregister API: `kvkNummer`, `naam`, `handelsnamen`,\n`sbiActiviteiten`, `_embedded.eigenaar`/`hoofdvestiging` (incl. `rsin`,\n`rechtsvorm`), `adressen` en `links`. Voor actuele data wordt altijd\nKVK geraadpleegd; lokale cache (48 uur) dient alleen voor herhaalde\nrequests binnen 48 uur. `lastFetchedAt` toont wanneer de data voor het\nlaatst bij KVK is opgehaald. Optioneel: `vat=true`/`vies=true` leidt het\nbtw-nummer af uit `rsin` en valideert via EU VIES (gratis, extra latency).", "summary": "KVK detail (basisprofiel)", "tags": [ "KVK / Handelsregister", "KvkDetail" ], "parameters": [ { "name": "companyNumber", "in": "path", "required": true, "schema": { "type": "string" } }, { "name": "vat", "in": "query", "description": "Voeg derived VAT toe en valideer optioneel via VIES (`vat=true`). Alias: `vies`.", "schema": { "type": "string" } }, { "name": "vies", "in": "query", "description": "Alias voor `vat` \u2013 valideer VAT via VIES (`vies=true`).", "schema": { "type": "string" } } ], "responses": { "200": { "description": "Company basisprofiel", "content": { "application/json": { "schema": { "examples": [ { "kvkNummer": "68750110", "naam": "Test BV Donald", "indNonMailing": "Nee", "formeleRegistratiedatum": "20170519", "handelsnamen": [ { "naam": "Test BV Donald", "volgorde": 0 } ], "sbiActiviteiten": [ { "sbiCode": "01241", "sbiOmschrijving": "Teelt van appels en peren", "indHoofdactiviteit": "Ja" } ], "actief": true, "hoofdvestiging": { "vestigingsnummer": "000037178598", "eersteHandelsnaam": "Test BV Donald", "indHoofdvestiging": "Ja", "indCommercieleVestiging": "Ja", "adressen": [] }, "vat": { "number": "NL68750110B01", "rsin": "68750110", "checksumValid": true, "valid": null, "status": "unvalidated", "validatedAt": null }, "lastFetchedAt": "2026-10-08T12:00:00+00:00", "links": [ { "rel": "self", "href": "..." } ] } ], "anyOf": [ { "type": "string" }, { "type": "array", "items": [] } ] } } } }, "400": { "description": "", "content": { "application/json": { "schema": { "type": "object", "properties": { "fout": { "type": "array", "prefixItems": [ { "type": "object", "properties": { "code": { "type": "string", "const": "IPD0004" }, "omschrijving": { "type": "string" } }, "required": [ "code", "omschrijving" ] } ], "minItems": 1, "maxItems": 1, "additionalItems": false } }, "required": [ "fout" ] } } } }, "404": { "description": "Not found", "content": { "application/json": { "schema": { "type": "string", "examples": [ { "fout": [ { "code": "IPD0005", "omschrijving": "Op basis van het KVK-nummer kan het product niet worden geleverd." } ] } ] } } } } } } } }, "components": { "securitySchemes": { "ApiKeyAuth": { "type": "apiKey", "in": "header", "name": "X-Api-Key" }, "BearerAuth": { "type": "http", "scheme": "bearer" } } } }