openapi: 3.1.0
info:
  title: Olympus Protocol Metrics Health OHM Supply API
  version: 2.0.0
  description: Cacheable REST API for Olympus protocol metrics, treasury assets, and OHM supply. /operations routes are deprecated compatibility routes.
servers:
- url: https://treasury-subgraph-api.olympusdao.finance
  description: Olympus Protocol Metrics API
tags:
- name: OHM Supply
  description: Daily OHM supply attribution records.
paths:
  /v2/ohm-supply/daily:
    get:
      summary: Daily OHM supply
      operationId: getDailyOhmSupply
      tags:
      - OHM Supply
      description: 'Returns OHM supply attribution records for the requested date range: supply category, chain, block, balance, and USD value.'
      parameters:
      - name: start
        in: query
        required: true
        schema:
          type: string
          format: date
        description: Inclusive UTC calendar start date (YYYY-MM-DD).
      - name: end
        in: query
        required: false
        schema:
          type: string
          format: date
        description: Inclusive UTC calendar end date (YYYY-MM-DD). Defaults to the latest published date.
      responses:
        '200':
          description: OHM supply records.
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/OhmSupplyRecord'
        '400':
          description: Invalid date range.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    OhmSupplyRecord:
      type: object
      description: OHM supply attribution record for a given day.
      properties:
        date:
          type: string
          format: date
          description: UTC calendar date.
        supplyCategory:
          type: string
          description: Supply category label.
          enum:
          - Total Supply
          - Treasury
          - Liquidity-bound
          - Lending-bound
        chain:
          type: string
          description: EVM chain name.
          enum:
          - Ethereum
          - Arbitrum
          - Base
          - Polygon
          - Fantom
          - Berachain
        block:
          type: integer
          description: Block number of the snapshot.
        balance:
          type: number
          format: double
          description: OHM balance for this supply category and chain.
        value:
          type: number
          format: double
          description: USD value of the OHM balance.
    Error:
      type: object
      description: Error response.
      properties:
        error:
          type: string
          description: Human-readable error message.