Ondo Finance

Ondo Finance Attestations API

Get Mint and Redeem Attestations

GitHub OpenAPI

Documentation

📖
Quickstart
https://docs.ondo.finance/api-reference/quickstart

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/ondo-finance/refs/heads/main/openapi/ondo-finance-attestations-api-openapi.yml

Other Resources

🔗
Protobuf
https://raw.githubusercontent.com/api-evangelist/ondo-finance/refs/heads/main/grpc/ondo-finance-gm-backend.proto
🔗
ErrorCatalog
https://raw.githubusercontent.com/api-evangelist/ondo-finance/refs/heads/main/errors/ondo-finance-error-codes.yml
🔗
Webhooks
https://raw.githubusercontent.com/api-evangelist/ondo-finance/refs/heads/main/openapi/ondo-finance-perps-ws-openapi-original.json

OpenAPI Specification

ondo-finance-attestations-api-openapi.yml Raw ↑ 
openapi: 3.0.4
info:
  title: GM Backend Account Attestations API
  description: An API spec for the Ondo GM Backend API.
  version: 1.0.0
servers:
- url: https://api.gm.ondo.finance
  description: GM Backend API
tags:
- name: Attestations
  description: Get Mint and Redeem Attestations
paths:
  /v1/attestations:
    post:
      tags:
      - Attestations
      summary: Request a Mint or Redeem Attestation
      description: 'An attestation is a signed payload that authorizes a user to mint or redeem tokens. Each attestation is only valid for a limited time and is determined by the duration in the request. A user can specify a duration of `short` for a tighter price spread or `long` for an extended validity period.


        Note: There are specific user and session limits which can prevent the creation of an attestation. For more information on limits, see the [Get Trading Limits](https://docs.ondo.finance/api-reference/limits/get-trading-limits) endpoint.


        See also: [Error Codes](https://docs.ondo.finance/api-reference/error-codes)

        '
      operationId: createAttestation
      requestBody:
        description: Request a mint or redeem attestation.
        content:
          application/json:
            schema:
              oneOf:
              - $ref: '#/components/schemas/AttestationByTokenAmountRequest'
              - $ref: '#/components/schemas/AttestationByNotionalValueRequest'
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Attestation'
        '400':
          description: One of the request parameters is invalid. Please see the returned message and documentation for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                invalid_symbol:
                  summary: Invalid Symbol
                  value:
                    code: INVALID_SYMBOL
                    message: One of the request parameters is invalid.
                    documentation: https://docs.ondo.finance/api-reference/error-codes#invalid_symbol
                missing_user_address:
                  summary: Missing User Address (Solana)
                  value:
                    code: MISSING_USER_ADDRESS
                    message: missing user address
                    documentation: https://docs.ondo.finance/api-reference/error-codes#missing_user_address
                invalid_user_address:
                  summary: Invalid User Address (Solana)
                  value:
                    code: INVALID_USER_ADDRESS
                    message: invalid user address
                    documentation: https://docs.ondo.finance/api-reference/error-codes#invalid_user_address
        '401':
          description: Missing or invalid API key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: MISSING_API_KEY
                    message: missing API key
                    documentation: https://docs.ondo.finance/api-reference/error-codes#missing_api_key
        '403':
          description: The request was denied due to market state, asset state, or insufficient permissions.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                market_closed:
                  summary: Market Closed
                  value:
                    code: MARKET_CLOSED
                    message: market is closed
                    documentation: https://docs.ondo.finance/api-reference/error-codes#market_closed
                asset_paused:
                  summary: Asset Paused
                  value:
                    code: ASSET_PAUSED
                    message: asset trading is paused
                    documentation: https://docs.ondo.finance/api-reference/error-codes#asset_paused
                read_only:
                  summary: Read-Only API Key
                  value:
                    code: READ_ONLY_API_KEY
                    message: read-only API key cannot perform write operations
                    documentation: https://docs.ondo.finance/api-reference/error-codes#read_only_api_key
        '404':
          description: The provided asset symbol does not exist and cannot be found.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: ASSET_NOT_FOUND
                    message: asset not found
                    documentation: https://docs.ondo.finance/api-reference/error-codes#asset_not_found
        '429':
          description: The account has exceeded its rate limits. Please see the returned message and documentation for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: RATE_LIMITED
                    message: rate limit exceeded
                    documentation: https://docs.ondo.finance/api-reference/error-codes#rate_limited
        '500':
          description: An internal server error occurred. Please see the returned message and documentation for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: INTERNAL_ERROR
                    message: An internal server error occurred. Please see the returned message and documentation for details.
                    documentation: https://docs.ondo.finance/api-reference/error-codes#internal_error
      security:
      - apiKey: []
  /v1/attestations/soft:
    post:
      tags:
      - Attestations
      summary: Request a Soft Attestation Quote
      description: 'A soft quote provides pricing information for mint or redeem operations without creating an actual attestation. Unlike the [Request a Mint or Redeem Attestation endpoint](https://docs.ondo.finance/api-reference/attestations/request-a-mint-or-redeem-attestation), soft quotes:


        - Are not eligible for on-chain submission

        - Do not count against user limits (Active Notional Value, Session Notional Value, or Active Attestations)

        - Serve as pricing references for quote validation and user interface display

        - Do not include authentication fields such as `attestationId`, `userId`, `expiration`, or `signature`


        This endpoint can be used to acquire estimated pricing without impacting trading limits or creating binding commitments.


        See also: [Error Codes](https://docs.ondo.finance/api-reference/error-codes)

        '
      operationId: createSoftAttestationQuote
      requestBody:
        content:
          application/json:
            schema:
              oneOf:
              - $ref: '#/components/schemas/SoftQuoteByTokenAmountRequest'
              - $ref: '#/components/schemas/SoftQuoteByNotionalValueRequest'
        required: true
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/SoftQuote'
        '400':
          description: One of the request parameters is invalid. Please see the returned message and documentation for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: INVALID_SYMBOL
                    message: One of the request parameters is invalid.
                    documentation: https://docs.ondo.finance/api-reference/error-codes#invalid_symbol
        '401':
          description: Missing or invalid API key.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: MISSING_API_KEY
                    message: missing API key
                    documentation: https://docs.ondo.finance/api-reference/error-codes#missing_api_key
        '403':
          description: The request was denied due to market state, asset state, or insufficient permissions.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                market_closed:
                  summary: Market Closed
                  value:
                    code: MARKET_CLOSED
                    message: market is closed
                    documentation: https://docs.ondo.finance/api-reference/error-codes#market_closed
                asset_paused:
                  summary: Asset Paused
                  value:
                    code: ASSET_PAUSED
                    message: asset trading is paused
                    documentation: https://docs.ondo.finance/api-reference/error-codes#asset_paused
                read_only:
                  summary: Read-Only API Key
                  value:
                    code: READ_ONLY_API_KEY
                    message: read-only API key cannot perform write operations
                    documentation: https://docs.ondo.finance/api-reference/error-codes#read_only_api_key
        '404':
          description: The provided asset symbol does not exist and cannot be found.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: ASSET_NOT_FOUND
                    message: asset not found
                    documentation: https://docs.ondo.finance/api-reference/error-codes#asset_not_found
        '429':
          description: The account has exceeded its rate limits. Please see the returned message and documentation for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: RATE_LIMITED
                    message: rate limit exceeded
                    documentation: https://docs.ondo.finance/api-reference/error-codes#rate_limited
        '500':
          description: An internal server error occurred. Please see the returned message and documentation for details.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
              examples:
                error:
                  value:
                    code: INTERNAL_ERROR
                    message: An internal server error occurred. Please see the returned message and documentation for details.
                    documentation: https://docs.ondo.finance/api-reference/error-codes#internal_error
      security:
      - apiKey: []
components:
  schemas:
    SoftQuoteByNotionalValueRequest:
      type: object
      description: Request a soft quote to mint or redeem assets equal to the notional value.
      title: AttestationByNotionalValueRequest
      properties:
        chainId:
          $ref: '#/components/schemas/GMChains'
        symbol:
          type: string
          example: AAPLon
          description: The GM token symbol.
        side:
          $ref: '#/components/schemas/SideEnum'
        notionalValue:
          type: string
          description: Total value of assets, represented as a string-encoded decimal with up to 18 digits after the decimal point.
          example: '500.000000000000000000'
        duration:
          $ref: '#/components/schemas/AttestationDurationEnum'
      required:
      - chainId
      - symbol
      - side
      - notionalValue
    AttestationDurationEnum:
      type: string
      description: "Specifies the desired validity period for the attestation. Users can specify a duration of 'short' \nfor a tighter price spread or 'long' for an extended validity period.\n"
      enum:
      - short
      - long
    AttestationByTokenAmountRequest:
      type: object
      description: Request to mint or redeem a quantity of assets.
      title: AttestationByTokenAmountRequest
      properties:
        chainId:
          $ref: '#/components/schemas/GMChains'
        symbol:
          type: string
          example: AAPLon
          description: The GM token symbol.
        side:
          $ref: '#/components/schemas/SideEnum'
        tokenAmount:
          type: string
          description: The number of tokens, represented as a string-encoded decimal with up to 18 digits after the decimal point.
          example: '5.000000000000000000'
        duration:
          $ref: '#/components/schemas/AttestationDurationEnum'
        userAddress:
          type: string
          description: The Solana user address associated with the request. This is only required for Solana attestations.
          example: 7YkSgYQ6x7uBv9E3n2Yh6mF5tQ1rZc8Lp4WsXjKd3Ha2
      required:
      - chainId
      - symbol
      - side
      - tokenAmount
    Attestation:
      type: object
      properties:
        attestationId:
          type: string
          description: The attestation's unique identifier.
          example: '229852750420835981756873903928305653446'
        userId:
          type: string
          description: The onchain identifier for an association of wallets.
          example: '0x474d0000000000009310097834e2c7af00000000000000000000000000000000'
        chainId:
          type: string
          description: The chain's identifier, only including the chain id.
          example: '1'
        symbol:
          type: string
          description: The GM token symbol.
          example: AAPLon
        ticker:
          type: string
          description: The stock ticker associated with this attestation.
          example: AAPL
        assetAddress:
          type: string
          description: The contract address of the symbol.
          example: '0x14c3abf95cb9c93a8b82c1cdcb76d72cb87b2d4c'
        side:
          type: string
          enum:
          - '0'
          - '1'
          description: The direction of the trade (0 for buy, 1 for sell).
          example: '0'
        tokenAmount:
          type: string
          description: The number of tokens to mint/redeem represented as a string with 18 decimal places.
          example: '5000000000000000000'
        price:
          type: string
          description: The price per asset in USDon, represented as a string with up to 18 decimal places.
          example: '225273151158540753535'
        expiration:
          type: number
          description: The epoch timestamp when the attestation will expire.
          example: 1746655938
        signature:
          type: string
          description: The base64-encoded signature attesting to the quote.
          example: kMecIrsGFdoAdxzRq2bPo07FWP2QyrxWfjrSMAdIZXNq3bXQnWx27aTKyt9fJiXWrzShYemxA/0RengNqNJ6bBs=
        additionalData:
          type: string
          description: Base64-encoded additional data to provide within the attestation.
          example: ''
      required:
      - attestationId
      - userId
      - chainId
      - symbol
      - ticker
      - assetAddress
      - side
      - tokenAmount
      - price
      - expiration
      - signature
      - additionalData
    SoftQuote:
      type: object
      properties:
        chainId:
          type: string
          description: The chain's identifier, only including the chain id.
          example: '1'
        symbol:
          type: string
          description: The GM token symbol.
          example: AAPLon
        ticker:
          type: string
          description: The stock ticker associated with this attestation.
          example: AAPL
        assetAddress:
          type: string
          description: The contract address of the symbol.
          example: '0x96F6eF951840721AdBF46Ac996b59E0235CB985C'
        side:
          type: string
          enum:
          - '0'
          - '1'
          description: The direction of the trade (0 for buy, 1 for sell).
        tokenAmount:
          type: string
          description: The number of tokens to mint/redeem represented as a string with 18 decimal places.
          example: '5000000000000000000'
        price:
          type: string
          description: The price per asset in USDon, represented as a string with 18 decimal places.
          example: '225273151158540753535'
      required:
      - chainId
      - symbol
      - ticker
      - assetAddress
      - side
      - tokenAmount
      - price
    SideEnum:
      type: string
      description: The direction of the trade.
      enum:
      - buy
      - sell
    AttestationByNotionalValueRequest:
      type: object
      description: Request to mint or redeem assets equal to the notional value.
      title: AttestationByNotionalValueRequest
      properties:
        chainId:
          $ref: '#/components/schemas/GMChains'
        symbol:
          type: string
          example: AAPLon
          description: The GM token symbol.
        side:
          $ref: '#/components/schemas/SideEnum'
        notionalValue:
          type: string
          description: Total value of assets, represented as a string-encoded decimal with up to 18 digits after the decimal point.
          example: '500.000000000000000000'
        duration:
          $ref: '#/components/schemas/AttestationDurationEnum'
        userAddress:
          type: string
          description: The Solana user address associated with the request. This is only required for Solana attestations.
          example: 7YkSgYQ6x7uBv9E3n2Yh6mF5tQ1rZc8Lp4WsXjKd3Ha2
      required:
      - chainId
      - symbol
      - side
      - notionalValue
    GMChains:
      type: string
      description: The chain's identifier including the chain name and chain id.
      enum:
      - ethereum-1
      - bsc-56
      - solana-900
    ErrorResponse:
      type: object
      properties:
        message:
          type: string
          description: A human-readable message providing more details about the error.
        documentation:
          type: string
          description: A URL to the relevant documentation for this error.
        code:
          type: string
          description: A reason code identifying the specific type of error. See the Error Codes reference for a full list of possible values.
      required:
      - code
      - message
    SoftQuoteByTokenAmountRequest:
      type: object
      description: Request a soft quote to mint or redeem a quantity of assets.
      title: AttestationByTokenAmountRequest
      properties:
        chainId:
          $ref: '#/components/schemas/GMChains'
        symbol:
          type: string
          example: AAPLon
          description: The GM token symbol.
        side:
          $ref: '#/components/schemas/SideEnum'
        tokenAmount:
          type: string
          description: The number of tokens, represented as a string-encoded decimal with up to 18 digits after the decimal point.
          example: '5.000000000000000000'
        duration:
          $ref: '#/components/schemas/AttestationDurationEnum'
      required:
      - chainId
      - symbol
      - side
      - tokenAmount
  securitySchemes:
    apiKey:
      type: apiKey
      name: x-api-key
      in: header