Eckari

An empty items list is never the same as "no owner": ownership_status and the filed PSC statements/exemptions explain why the register discloses none. Returns the persons with significant control (PSCs) for a UK company — the individuals, entities or legal persons that own or control it — each nature of control carrying the register code and its official text, with dates and public identification. The UK statutory beneficial-ownership (UBO) record. Use when: Who owns this UK company?

Resource: api.eckari.com/v1/companies/uk/:company_number/owners

Network: eip155:8453 · Asset: 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913 · Pay to: 0x9d6b6fdB04040a55d58B24ff4C90C08cf6083C8f

Payment methods: — · Last validation: 2026-09-14 12:10:46.28+00

{
  "input": {
    "type": "object",
    "required": [
      "type",
      "method"
    ],
    "properties": {
      "type": {
        "type": "string",
        "const": "http"
      },
      "method": {
        "enum": [
          "GET",
          "HEAD",
          "DELETE"
        ],
        "type": "string"
      },
      "pathParams": {
        "type": "object",
        "required": [
          "company_number"
        ],
        "properties": {
          "company_number": {
            "type": "string",
            "pattern": "^\\s*(?:[0-9]{1,8}|[A-Za-z][0-9]{7}|[A-Za-z]{2}[0-9]{6}|[A-Za-z]{2}[0-9]{5}[A-Za-z]|[A-Za-z]{2}[0-9]{4}[A-Za-z]{2})\\s*$",
            "maxLength": 10,
            "minLength": 1,
            "description": "Companies House company number. Accepted shapes are the register's own — 1-8 digits (zero-padded to 8, e.g. 445790 → 00445790), one letter + 7 digits (R0000001), two letters + 6 digits (SC002180, NI000001, OC123456, OE000001), or the registered-society suffix forms (two letters + 5 digits + 1 letter; two letters + 4 digits + 2 letters). Case-insensitive; surrounding whitespace is ignored (which is why maxLength is 10); internal spaces and punctuation are not accepted. Any other value (for example PROBE) is rejected as INVALID_INPUT before payment and before any upstream call."
          }
        },
        "additionalProperties": false
      },
      "queryParams": {
        "type": "object",
        "properties": {
          "limit": {
            "type": "integer",
            "maximum": 100,
            "minimum": 1,
            "description": "Maximum PSCs to return per page (1-100). Default 10. Eckari reads up to three register pages of 100 entries to fill this after the ceased filter is applied; if the limit is still unmet, page.has_more is true and page.next_offset says where to resume."
          },
          "offset": {
            "type": "integer",
            "maximum": 10000,
            "minimum": 0,
            "description": "Zero-based index into the register's own PSC list (not into the filtered result). Pass back page.next_offset from the previous response to page."
          },
          "include_ceased": {
            "type": "boolean",
            "description": "Include PSCs whose control has ceased. Default false."
          }
        },
        "additionalProperties": false
      }
    },
    "additionalProperties": false
  },
  "output": {
    "type": "object",
    "required": [
      "type"
    ],
    "properties": {
      "type": {
        "type": "string"
      },
      "example": {
        "type": "object"
      }
    }
  },
  "paymentRequirements": [
    {
      "raw": {
        "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
        "extra": {
          "name": "USD Coin",
          "version": "2"
        },
        "payTo": "0x9d6b6fdB04040a55d58B24ff4C90C08cf6083C8f",
        "amount": "8000",
        "scheme": "exact",
        "network": "eip155:8453",
        "maxTimeoutSeconds": 60
      },
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "payTo": "0x9d6b6fdB04040a55d58B24ff4C90C08cf6083C8f",
      "scheme": "exact",
      "network": "eip155:8453",
      "amountAtomic": "8000"
    }
  ]
}

Source catalog records are retained separately from live endpoint observations. Sonar score, uptime, and latency are advisory metrics. CDP indexing is not inferred from validation.