> ## Documentation Index
> Fetch the complete documentation index at: https://docs.d1.exchange/llms.txt
> Use this file to discover all available pages before exploring further.

# Get balances

> Your USDC balance. Always exactly one entry. Takes no parameters.

Guide: [Positions & Balances](/market-makers/positions-and-balances#balances).



## OpenAPI

````yaml /api-reference/openapi.json get /mm/v1/balances
openapi: 3.1.0
info:
  title: D1 Market Maker API
  version: mm/v1
  description: >-
    API for authorized market makers: market data, account state, order
    placement and cancellation, fills and sequenced executions. Read endpoints
    require the mm:read scope; trading endpoints require mm:trade.
servers:
  - url: '{D1_API_URL}'
    description: Base URL provided by D1 during onboarding.
    variables:
      D1_API_URL:
        default: $D1_API_URL
        description: Provided by D1 during onboarding.
security:
  - bearerAuth:
      - mm:read
tags:
  - name: Status
  - name: Market data
  - name: Account
  - name: Orders
  - name: Trading
  - name: Executions
paths:
  /mm/v1/balances:
    get:
      tags:
        - Account
      summary: Get balances
      description: >-
        Your USDC balance. Always exactly one entry. Takes no parameters.


        Guide: [Positions &
        Balances](/market-makers/positions-and-balances#balances).
      operationId: getBalances
      parameters: []
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  balances:
                    type: array
                    items:
                      $ref: '#/components/schemas/Balance'
                  serverTimeMs:
                    type: string
                    description: >-
                      D1 server time at the read, Unix milliseconds, as a
                      decimal string.
                    example: '1800000000000'
                required:
                  - balances
                  - serverTimeMs
              example:
                balances:
                  - asset: USDC
                    available:
                      units: '250000000000'
                      decimals: 6
                    reserved:
                      units: '15000000000'
                      decimals: 6
                    total:
                      units: '265000000000'
                      decimals: 6
                serverTimeMs: '1800000000456'
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '403':
          $ref: '#/components/responses/Forbidden'
        '429':
          $ref: '#/components/responses/RateLimited'
        '500':
          $ref: '#/components/responses/Internal'
components:
  schemas:
    Balance:
      type: object
      properties:
        asset:
          type: string
          example: USDC
        available:
          $ref: '#/components/schemas/Exact'
          description: USDC atoms (decimals 6).
        reserved:
          $ref: '#/components/schemas/Exact'
          description: >-
            USDC atoms held against open activity. A single total, not broken
            down.
        total:
          $ref: '#/components/schemas/Exact'
          description: available + reserved.
      required:
        - asset
        - available
        - reserved
        - total
    Exact:
      type: object
      properties:
        units:
          type: string
          description: >-
            Integer value as a decimal string. May be negative. May exceed 2^53
            − 1: parse with BigInt or a decimal library, never Number.
          example: '105000123456'
        decimals:
          type: integer
          minimum: 0
          description: Scale. value = units × 10^-decimals.
          example: 6
      required:
        - units
        - decimals
      description: Exact fixed-point number. value = units × 10^-decimals.
    Error:
      type: object
      properties:
        error:
          type: string
          description: Stable error code.
          enum:
            - AUTH_REQUIRED
            - INVALID_API_KEY
            - API_KEY_REVOKED
            - DEALER_SUSPENDED
            - INSUFFICIENT_SCOPE
            - MALFORMED_REQUEST
            - INVALID_CURSOR
            - NOT_FOUND
            - RATE_LIMITED
            - INTERNAL
            - TRADING_DISABLED
            - UNKNOWN_INSTRUMENT
            - MARKET_NOT_TRADING
            - MARKET_PAUSED
            - INVALID_PRICE
            - INVALID_QUANTITY
            - IDEMPOTENCY_CONFLICT
            - INSUFFICIENT_FUNDS
            - INSUFFICIENT_POSITION
            - RISK_LIMIT
            - ORDER_NOT_FOUND
            - ORDER_NOT_CANCELLABLE
        message:
          type: string
          description: Human-readable message. Do not parse.
        limit:
          type: string
          enum:
            - MAX_OPEN_EXPOSURE
            - MAX_RESTING_ORDERS
            - MAX_RESTING_ORDERS_PER_INSTRUMENT
          description: >-
            Present only when error is RISK_LIMIT: the limit the order would
            exceed.
      required:
        - error
        - message
  responses:
    BadRequest:
      description: MALFORMED_REQUEST or INVALID_CURSOR.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: MALFORMED_REQUEST
            message: …
    Unauthorized:
      description: AUTH_REQUIRED, INVALID_API_KEY or API_KEY_REVOKED.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: INVALID_API_KEY
            message: …
    Forbidden:
      description: DEALER_SUSPENDED or INSUFFICIENT_SCOPE.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: INSUFFICIENT_SCOPE
            message: …
    RateLimited:
      description: >-
        RATE_LIMITED: not admitted. Wait Retry-After seconds, then retry the
        same request.
      headers:
        Retry-After:
          description: Seconds until the rate-limit window ends (at least 1).
          schema:
            type: integer
            minimum: 1
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: RATE_LIMITED
            message: Too many requests. Retry after the indicated delay.
    Internal:
      description: INTERNAL. Retry with backoff.
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/Error'
          example:
            error: INTERNAL
            message: …
  securitySchemes:
    bearerAuth:
      type: http
      scheme: bearer
      description: >-
        Authorization: Bearer <your-api-key>. Scopes: mm:read (GET endpoints),
        mm:trade (POST endpoints).

````

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