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

# Get Delta fillable balance

> User's source-token amounts already committed to open limit orders. Use it when sizing a new limit order.



## OpenAPI

````yaml api-reference/specs/delta-v2.json GET /v2/delta/orders/fillablebalance/{chainId}/{userAddress}/{tokenAddress}
openapi: 3.0.3
info:
  title: Velora Delta API V2
  version: 2.0.0
  description: >-
    Velora Delta API V2 — server-built EIP-712 orders, route-based pricing with
    alternatives, paginated order history, and a unified status model. Ships
    alongside Delta V1; both protocols share the same on-chain contracts.
servers:
  - url: https://api.velora.xyz
    description: Production
security: []
paths:
  /v2/delta/orders/fillablebalance/{chainId}/{userAddress}/{tokenAddress}:
    get:
      summary: Compute a user's fillable balance for limit orders
      description: >-
        Returns the amount of a source-token already committed to open limit
        orders on a chain for the given user. Use this when sizing a new limit
        order so it doesn't double-commit funds.


        `tokenAddress` is an optional trailing path segment — **omit it**
        (`/v2/delta/orders/fillablebalance/{chainId}/{userAddress}`) to get the
        fillable balance for every token with open commitments. With
        `tokenAddress` set, the response holds a single entry for that token (or
        `"0"` if the user has no open commitments on it).
      operationId: deltaV2OrdersFillableBalance
      parameters:
        - name: chainId
          in: path
          required: true
          schema:
            type: integer
            example: 1
        - name: userAddress
          in: path
          required: true
          schema:
            type: string
        - name: tokenAddress
          in: path
          required: true
          schema:
            type: string
          description: >-
            Source token to inspect. Omit the entire segment to get balances for
            every committed token.
      responses:
        '200':
          description: >-
            Map of `tokenAddress → fillableBalance` (raw token units as a
            string).
          content:
            application/json:
              schema:
                type: object
                additionalProperties:
                  type: string
                example:
                  '0x6B175474E89094C44Da98b954EedeAC495271d0F': '500000000000000000'
        '400':
          description: Unsupported chain

````