# Sirenic – Latvian Public Procurement Records (IUB)

> Sirenic – Latvian Public Procurement Records (IUB) is a paid API for AI agents from api.sirenic.eu, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-12).

Retrieves public-procurement contracts won and notices issued by a Latvian company from the official IUB open-data feed, including buyer, CPV codes, contract value in EUR, and dates.

## Facts

- Endpoint: GET https://api.sirenic.eu/v1/eu/entreprise/LV/:regnr/marches-publics?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/sirenic-latvian-public-procurement-records-iub-6d38d51c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8MmMt5Taa6fTq8Eoi7t59

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability sirenic-latvian-public-procurement-records-iub-6d38d51c
```

Example prompt: Pull up all the IUB public procurement contracts won by Latvian company 40003242737 — I want to see the buyers, contract values in EUR, CPV codes, and dates.

## When to prefer this

Use this endpoint when you need official, CC0-licensed Latvian public-procurement data sourced directly from IUB e-forms (since 2023-10-25), including contract values in EUR, CPV codes, and buyer identity. Prefer it over web scraping or third-party aggregators when you need structured, machine-readable procurement facts for a specific Latvian company identified by its 11-digit Uzņēmumu reģistrs number. Not suitable for non-Latvian companies or for identifying natural-person contractors.

## Known failure modes

- 404 if the 11-digit registration number is not found in the IUB dataset (payment is cancelled)
- Company exists but has no procurement records – returns empty arrays with zero totals
- About 3% of Latvian winners are published without an identifier in the source data, so absence of results is non-conclusive
- Natural-person winners are never returned by design
- Malformed or non-11-digit regnr may produce errors or unexpected results

## How this service works

Public-procurement record of a Latvian company from the IUB (Iepirkumu uzraudzības birojs) daily open-data notices (CC0, e-forms since 2023-10-25): contracts WON (buyer, subject, CPV, contract reference, value in EUR, dates, status) and notices ISSUED as a buyer, newest first, with totals. About 3% of Latvian winners are published with no identifier: zero is a non-conclusive absence. Facts, not a score. Legal persons only: IK, sole traders and unrecognised forms get 404, not billed.

## Output

Returns a structured record of public-procurement contracts won by the company (buyer name, contract subject, CPV codes, contract reference, EUR value, conclusion date, decision date, contract status) and procurement notices issued by the company as a buyer, ordered newest first, plus aggregate totals. Natural-person winners are never included. If a winner has no identifier in the source data (about 3% of cases), zero is returned as a non-conclusive absence. Returns 404 if the registration number is unknown.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "pathParams": {
     "type": "object",
     "required": [
      "regnr"
     ],
     "properties": {
      "regnr": {
       "type": "string",
       "description": "11-digit Latvian registration number (Uzņēmumu reģistrs), e.g. 40003242737. LEGAL PERSONS ONLY: an individual merchant (IK), a sole trader, a form not recognised as a legal person or an unknown number returns 404, payment cancelled."
      }
     }
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/sirenic-latvian-public-procurement-records-iub-6d38d51c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.sirenic.eu](https://www.zero.xyz/host/api.sirenic.eu/llms.txt)