Frax Finance

Frax Finance v2-fxb API

The v2-fxb API from Frax Finance — 6 operation(s) for v2-fxb.

GitHub OpenAPI

Operations 6

4 of 6 operations are conformant: apis.io called them with no credentials and the responses matched this contract. Checked 2026-11-12. how this works · status file

GET /v2/fxb/auctions V2Fxb controller get auctions conformant #
GET /v2/fxb/bonds V2Fxb controller get bonds conformant #
GET /v2/fxb/bonds/{maturityDate} V2Fxb controller get bond for maturity date #
GET /v2/fxb/bonds/{maturityDate}/auctions/{auctionNumber} V2Fxb controller get bond auction details #
GET /v2/fxb/summary/history V2Fxb controller get fxb summary history conformant #
GET /v2/fxb/recent-transactions V2Fxb controller get fxb recent auction transactions conformant #

Documentation

📖
Documentation
https://docs.frax.finance/smart-contracts/api

Specifications

⚙
OpenAPI
https://artifacts.apis.io/frax/openapi/frax-v2-fxb-api-openapi.yml

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OpenAPI Specification

frax-v2-fxb-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  title: Frax Finance V2 Fxb API
  description: The Frax Finance API
  version: '2.0'
  contact:
    name: Frax Finance
    url: https://docs.frax.finance
    email: no-reply@frax.finance
servers:
- url: https://api.frax.finance
tags:
- name: v2-fxb
paths:
  /v2/fxb/auctions:
    get:
      operationId: V2FxbController_getAuctions
      parameters: []
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FraxBondAuctionResponse'
      tags:
      - v2-fxb
      summary: V2Fxb controller get auctions
      x-summary-source: derived
  /v2/fxb/bonds:
    get:
      operationId: V2FxbController_getBonds
      parameters:
      - name: showAll
        required: false
        in: query
        description: By default, only the main FXB AMO auction bonds are shown. Set `showAll=true` to show all bonds, including those with no supply.
        schema:
          default: null
          type:
          - boolean
          - 'null'
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ListAllFraxBondsResponse'
      tags:
      - v2-fxb
      summary: V2Fxb controller get bonds
      x-summary-source: derived
  /v2/fxb/bonds/{maturityDate}:
    get:
      operationId: V2FxbController_getBondForMaturityDate
      parameters:
      - name: maturityDate
        required: true
        in: path
        description: The maturity date of the FXB in yyyy-MM-dd format
        schema:
          minLength: 1
          maxLength: 20
          type: string
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FraxBondInfoResponse'
      tags:
      - v2-fxb
      summary: V2Fxb controller get bond for maturity date
      x-summary-source: derived
  /v2/fxb/bonds/{maturityDate}/auctions/{auctionNumber}:
    get:
      operationId: V2FxbController_getBondAuctionDetails
      parameters:
      - name: maturityDate
        required: true
        in: path
        description: The maturity date of the FXB in yyyy-MM-dd format
        schema:
          minLength: 1
          maxLength: 20
          type: string
      - name: auctionNumber
        required: true
        in: path
        description: The auction number/index
        schema:
          type: number
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FraxBondAuctionDetailResponse'
      tags:
      - v2-fxb
      summary: V2Fxb controller get bond auction details
      x-summary-source: derived
  /v2/fxb/summary/history:
    get:
      operationId: V2FxbController_getFxbSummaryHistory
      parameters:
      - name: range
        required: true
        in: query
        description: Timeframe
        schema:
          enum:
          - 1d
          - 7d
          - 30d
          - 90d
          - 180d
          - 365d
          - ytd
          - all
          type: string
      responses:
        '200':
          description: Returns a list of Fraxbond price history for the requested range.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FraxBondSummaryHistoryResponse'
      tags:
      - v2-fxb
      summary: V2Fxb controller get fxb summary history
      x-summary-source: derived
  /v2/fxb/recent-transactions:
    get:
      operationId: V2FxbController_getFxbRecentAuctionTransactions
      parameters: []
      responses:
        '200':
          description: ''
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/FraxBondTransactionsResponse'
      tags:
      - v2-fxb
      summary: V2Fxb controller get fxb recent auction transactions
      x-summary-source: derived
components:
  schemas:
    FraxBondTransactionsResponse:
      type: object
      properties:
        transactions:
          description: Array of transactions.
          type: array
          items:
            $ref: '#/components/schemas/FraxBondTransaction'
      required:
      - transactions
    FraxBondAuction:
      type: object
      properties:
        auctionAddress:
          type: string
        auctionOwnerAddress:
          type: string
        auctionNumber:
          type: number
        auctionStartTimestamp:
          format: date-time
          type:
          - string
          - 'null'
        auctionExpiryTimestamp:
          format: date-time
          type:
          - string
          - 'null'
        auctionEndTimestamp:
          format: date-time
          type:
          - string
          - 'null'
        totalSellAmount:
          type: number
        sellAmountRemaining:
          type: number
        totalAmountSold:
          type: number
        totalAmountCollected:
          type: number
        startPrice:
          type: number
        currentPrice:
          type: number
        priceDecay:
          type: string
          description: Price decay, (wei per second), using 1e18 precision
        minPrice:
          type: number
        priceSlippage:
          type: string
          description: Slippage fraction. E.g (0.01 * 1e18) = 1%
        buyTokenAddress:
          type: string
        currentMinYieldToMaturity:
          type:
          - number
          - 'null'
        currentMaxYieldToMaturity:
          type:
          - number
          - 'null'
        hasExpired:
          type:
          - boolean
          - 'null'
        hasEnded:
          type: boolean
        bond:
          $ref: '#/components/schemas/FraxBondInfo'
      required:
      - auctionAddress
      - auctionOwnerAddress
      - auctionNumber
      - auctionStartTimestamp
      - auctionExpiryTimestamp
      - auctionEndTimestamp
      - totalSellAmount
      - sellAmountRemaining
      - totalAmountSold
      - totalAmountCollected
      - startPrice
      - currentPrice
      - priceDecay
      - minPrice
      - priceSlippage
      - buyTokenAddress
      - currentMinYieldToMaturity
      - currentMaxYieldToMaturity
      - hasExpired
      - hasEnded
      - bond
    FraxBondTransaction:
      type: object
      properties:
        transactionHash:
          type: string
        transactionTimestamp:
          type: string
        auctionAddress:
          type: string
        auctionNumber:
          type: number
        tokenBuyAmount:
          type: number
        tokenSellAmount:
          type: number
        bondSymbol:
          type: string
        bondAddress:
          type: string
        senderAddress:
          type: string
        recipientAddress:
          type: string
        lastPrice:
          type: number
        slippagePerSellToken:
          type: number
        chain:
          type: string
          enum:
          - ethereum
          - fraxtal
        txIdx:
          type: number
        logIdx:
          type: number
      required:
      - transactionHash
      - transactionTimestamp
      - auctionAddress
      - auctionNumber
      - tokenBuyAmount
      - tokenSellAmount
      - bondSymbol
      - bondAddress
      - senderAddress
      - recipientAddress
      - lastPrice
      - slippagePerSellToken
      - chain
      - txIdx
      - logIdx
    ListAllFraxBondsResponse:
      type: object
      properties:
        bonds:
          type: array
          items:
            $ref: '#/components/schemas/FraxBondInfo'
      required:
      - bonds
    FraxBondSummaryItemData:
      type: object
      properties:
        price:
          type: number
          description: The price of the FXB from a variety of sources, including Curve and auction transactions.
        ytm:
          type: number
          description: The yield to maturity of the FXB based on the price and time remaining.
        circulatingSupply:
          type: number
          description: The total supply that is not held by Frax-protocol-related contracts/addresses. I.e., the supply held by users.
        totalSupply:
          type: number
          description: The total supply of the ERC20 FXB token.
      required:
      - price
      - ytm
      - circulatingSupply
      - totalSupply
    FraxBondSummaryItem:
      type: object
      properties:
        timestampISO:
          format: date-time
          type: string
        fxbData:
          type: object
          additionalProperties:
            $ref: '#/components/schemas/FraxBondSummaryItemData'
      required:
      - timestampISO
      - fxbData
    FraxBondAuctionInfo:
      type: object
      properties:
        auctionAddress:
          type: string
        auctionOwnerAddress:
          type: string
        auctionNumber:
          type: number
        auctionStartTimestamp:
          format: date-time
          type:
          - string
          - 'null'
        auctionExpiryTimestamp:
          format: date-time
          type:
          - string
          - 'null'
        auctionEndTimestamp:
          format: date-time
          type:
          - string
          - 'null'
        totalSellAmount:
          type: number
        sellAmountRemaining:
          type: number
        totalAmountSold:
          type: number
        totalAmountCollected:
          type: number
        startPrice:
          type: number
        currentPrice:
          type: number
        priceDecay:
          type: string
          description: Price decay, (wei per second), using 1e18 precision
        minPrice:
          type: number
        priceSlippage:
          type: string
          description: Slippage fraction. E.g (0.01 * 1e18) = 1%
        buyTokenAddress:
          type: string
        currentMinYieldToMaturity:
          type:
          - number
          - 'null'
        currentMaxYieldToMaturity:
          type:
          - number
          - 'null'
        hasExpired:
          type:
          - boolean
          - 'null'
        hasEnded:
          type: boolean
      required:
      - auctionAddress
      - auctionOwnerAddress
      - auctionNumber
      - auctionStartTimestamp
      - auctionExpiryTimestamp
      - auctionEndTimestamp
      - totalSellAmount
      - sellAmountRemaining
      - totalAmountSold
      - totalAmountCollected
      - startPrice
      - currentPrice
      - priceDecay
      - minPrice
      - priceSlippage
      - buyTokenAddress
      - currentMinYieldToMaturity
      - currentMaxYieldToMaturity
      - hasExpired
      - hasEnded
    FraxBondInfoResponse:
      type: object
      properties:
        fxb:
          $ref: '#/components/schemas/FraxBondInfo'
        auctions:
          type: array
          items:
            $ref: '#/components/schemas/FraxBondAuctionInfo'
      required:
      - fxb
      - auctions
    FraxBondSummaryHistoryResponse:
      type: object
      properties:
        fxbs:
          description: Array of FXBs included in the response, formatted as their maturity date yyyy-MM-dd.
          type: array
          items:
            type: string
        items:
          description: Array of historical FXB summary stats.
          type: array
          items:
            $ref: '#/components/schemas/FraxBondSummaryItem'
      required:
      - fxbs
      - items
    FraxBondAuctionDetailResponse:
      type: object
      properties:
        fxb:
          $ref: '#/components/schemas/FraxBondInfo'
        auction:
          $ref: '#/components/schemas/FraxBondAuctionInfo'
        transactions:
          type: array
          items:
            $ref: '#/components/schemas/FraxBondTransaction'
      required:
      - fxb
      - auction
      - transactions
    FraxBondAuctionResponse:
      type: object
      properties:
        auctions:
          type: array
          items:
            $ref: '#/components/schemas/FraxBondAuction'
      required:
      - auctions
    FraxBondInfo:
      type: object
      properties:
        id:
          type: number
          description: Index of the bond for a particular factory address. The first bond starts with an `id` of `0` and it increments for each new bond after.
        chain:
          type: string
          enum:
          - ethereum
          - fraxtal
        symbol:
          type: string
        name:
          type: string
        address:
          type: string
        createdTimestamp:
          format: date-time
          type: string
        maturityTimestamp:
          format: date-time
          type: string
        maturity:
          type: string
        factoryAddress:
          type: string
      required:
      - id
      - chain
      - symbol
      - name
      - address
      - createdTimestamp
      - maturityTimestamp
      - maturity
      - factoryAddress
externalDocs:
  description: Open V1 Docs
  url: /v1/docs