Loon Finance Issuances API

openapi: 3.1.0
info:
  title: Loon CADC Transparency Attestations Issuances API
  version: '1.0'
  description: 'Public, read-only transparency API for CADC, the Canadian-dollar stablecoin issued by Loon. Exposes live circulating supply (total and per-chain), on-chain mint (issuance) events per chain, and the history of independent monthly reserve attestations. No authentication is required; responses are JSON with permissive CORS (Access-Control-Allow-Origin: *) and are cached at the edge (Cloudflare, max-age 300s). This specification was generated by the API Evangelist enrichment pipeline from the endpoints documented in https://loon.finance/llms.txt and the verified live JSON responses on 2026-07-20; it is not published by Loon.'
  x-enrichment:
    method: generated
    source: https://loon.finance/llms.txt + verified live responses 2026-07-20
  contact:
    name: Loon Support
    email: support@loon.finance
    url: https://loon.finance/support-centre
  license:
    name: Terms of Service
    url: https://loon.finance/terms-of-service
servers:
- url: https://loon.finance
  description: Production
tags:
- name: Issuances
  description: On-chain CADC mint events per chain.
paths:
  /api/issuances:
    get:
      operationId: listIssuances
      tags:
      - Issuances
      summary: List CADC issuance (mint) events for a chain
      description: Returns recent on-chain CADC mint events for a single chain, newest first. The chainId query parameter is required.
      parameters:
      - name: chainId
        in: query
        required: true
        description: EVM chain id (e.g. 1 Ethereum, 8453 Base, 137 Polygon, 42161 Arbitrum, 59144 Linea).
        schema:
          type: integer
      - name: limit
        in: query
        required: false
        description: Maximum number of issuance events to return.
        schema:
          type: integer
      responses:
        '200':
          description: Issuance events for the chain.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/IssuancesResponse'
        '400':
          description: Missing or invalid chainId query parameter.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorMessage'
components:
  schemas:
    Issuance:
      type: object
      properties:
        txHash:
          type: string
        blockNumber:
          type: string
        issuedAt:
          type: string
          format: date-time
        minter:
          type: string
        to:
          type: string
        amountCadc:
          type: string
    IssuancesResponse:
      type: object
      properties:
        chainId:
          type: integer
        count:
          type: integer
        pagination:
          $ref: '#/components/schemas/Pagination'
        issuances:
          type: array
          items:
            $ref: '#/components/schemas/Issuance'
    Pagination:
      type: object
      properties:
        limit:
          type: integer
        offset:
          type: integer
        orderDirection:
          type: string
          example: desc
    ErrorMessage:
      type: object
      properties:
        message:
          type: string