Create quote

curl --request POST \
  --url https://api.sand.etherfuse.com/organization/{organizationId}/quote \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "source": {
    "type": "stored",
    "id": "3f9a2c1e-5b7d-4e8f-9a01-2b3c4d5e6f70"
  },
  "destination": {
    "type": "stored",
    "id": "8c1d2e3f-4a5b-4c6d-8e7f-901a2b3c4d5e"
  },
  "sourceAmount": "1000",
  "sourceAsset": "MXN",
  "destinationAsset": "USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    source: {type: 'stored', id: '3f9a2c1e-5b7d-4e8f-9a01-2b3c4d5e6f70'},
    destination: {type: 'stored', id: '8c1d2e3f-4a5b-4c6d-8e7f-901a2b3c4d5e'},
    sourceAmount: '1000',
    sourceAsset: 'MXN',
    destinationAsset: 'USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN'
  })
};

fetch('https://api.sand.etherfuse.com/organization/{organizationId}/quote', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.sand.etherfuse.com/organization/{organizationId}/quote"

payload = {
    "source": {
        "type": "stored",
        "id": "3f9a2c1e-5b7d-4e8f-9a01-2b3c4d5e6f70"
    },
    "destination": {
        "type": "stored",
        "id": "8c1d2e3f-4a5b-4c6d-8e7f-901a2b3c4d5e"
    },
    "sourceAmount": "1000",
    "sourceAsset": "MXN",
    "destinationAsset": "USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "quoteId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "sourceAmount": "<string>",
  "destinationAmount": "<string>",
  "sourceAsset": "<string>",
  "destinationAsset": "<string>",
  "sourceRail": "spei",
  "destinationRail": "spei",
  "rateAfterFees": "<string>",
  "rateBeforeFees": "<string>",
  "feeBps": 123,
  "feeAmount": "<string>",
  "fees": [
    {
      "type": "transactionFee",
      "amount": "<string>",
      "asset": "<string>",
      "bps": 123
    }
  ],
  "createdAt": "2023-11-07T05:31:56Z",
  "expiresAt": "2023-11-07T05:31:56Z",
  "midMarketRate": "<string>"
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

Quotes

Create quote

Prices a transfer from one payment account to another. Each account must belong to the organization in the route or to your API key’s organization. The quote and its order belong to the organization in the route, even when an account belongs to your organization, so quote under the organization you want the order reported under. Pass the quote’s quoteId to POST /organization/{organizationId}/order with the same organizationId before expiresAt; a quote is valid for 2 minutes.

One side must be a wallet. Supported shapes: fiat to crypto (onramp), crypto to fiat (offramp), a same-chain swap between two wallets, and a cross-chain transfer of the same token between wallets on two supported chains. Fiat to fiat is not supported.

Rails. Each side moves on one rail. Omit sourceRail or destinationRail and we use the account’s default rail for that direction (the rail with isDefault: true in the account’s rails). When two of an account’s rails tie, name the rail. The account’s status for that direction on that rail must be ready, or the quote fails with 409 payment-account-not-ready.

Assets. Send an asset from GET /supported_assets: a currency code such as MXN for a fiat side, a token’s asset for a crypto side. Filter that list by paymentAccountId to see what each account can use. For a cross-chain transfer, send the token’s asset on each chain, and pick a destination chain from the source token’s bridgeDestinations.

Approval. The organization must be approved, or the quote fails with 409 organization-not-approved.

POST

organization

{organizationId}

quote

Create quote

curl --request POST \
  --url https://api.sand.etherfuse.com/organization/{organizationId}/quote \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "source": {
    "type": "stored",
    "id": "3f9a2c1e-5b7d-4e8f-9a01-2b3c4d5e6f70"
  },
  "destination": {
    "type": "stored",
    "id": "8c1d2e3f-4a5b-4c6d-8e7f-901a2b3c4d5e"
  },
  "sourceAmount": "1000",
  "sourceAsset": "MXN",
  "destinationAsset": "USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN"
}
'

const options = {
  method: 'POST',
  headers: {Authorization: '<api-key>', 'Content-Type': 'application/json'},
  body: JSON.stringify({
    source: {type: 'stored', id: '3f9a2c1e-5b7d-4e8f-9a01-2b3c4d5e6f70'},
    destination: {type: 'stored', id: '8c1d2e3f-4a5b-4c6d-8e7f-901a2b3c4d5e'},
    sourceAmount: '1000',
    sourceAsset: 'MXN',
    destinationAsset: 'USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN'
  })
};

fetch('https://api.sand.etherfuse.com/organization/{organizationId}/quote', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.sand.etherfuse.com/organization/{organizationId}/quote"

payload = {
    "source": {
        "type": "stored",
        "id": "3f9a2c1e-5b7d-4e8f-9a01-2b3c4d5e6f70"
    },
    "destination": {
        "type": "stored",
        "id": "8c1d2e3f-4a5b-4c6d-8e7f-901a2b3c4d5e"
    },
    "sourceAmount": "1000",
    "sourceAsset": "MXN",
    "destinationAsset": "USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN"
}
headers = {
    "Authorization": "<api-key>",
    "Content-Type": "application/json"
}

response = requests.post(url, json=payload, headers=headers)

print(response.text)

{
  "quoteId": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "sourceAmount": "<string>",
  "destinationAmount": "<string>",
  "sourceAsset": "<string>",
  "destinationAsset": "<string>",
  "sourceRail": "spei",
  "destinationRail": "spei",
  "rateAfterFees": "<string>",
  "rateBeforeFees": "<string>",
  "feeBps": 123,
  "feeAmount": "<string>",
  "fees": [
    {
      "type": "transactionFee",
      "amount": "<string>",
      "asset": "<string>",
      "bps": 123
    }
  ],
  "createdAt": "2023-11-07T05:31:56Z",
  "expiresAt": "2023-11-07T05:31:56Z",
  "midMarketRate": "<string>"
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

{
  "type": "https://docs.etherfuse.com/ramp/v2/errors/quote-expired",
  "title": "Quote expired",
  "status": 400,
  "detail": "quote 5e6f7a8b-9c0d-4e1f-8a2b-3c4d5e6f7a8b has expired or does not exist",
  "instance": "tag:etherfuse.com,2026-08-28:R2-10120/0b1c2d3e-4f50-4a6b-8c7d-9e0f1a2b3c4d",
  "errors": [
    {
      "pointer": "#/accountDetails/clabe",
      "detail": "This field is required."
    }
  ],
  "required": [
    "<string>"
  ],
  "missing": [
    "<string>"
  ]
}

Authorizations

Authorization

string

header

required

API key sent in the Authorization header, with no Bearer prefix.

Path Parameters

organizationId

string<uuid>

required

The organization this call acts for: your API key's organization or one of its customer organizations. Any other id returns 404 not-found.

Body

application/json

source

stored · object

required

A payment account in a quote, tagged by type. Use stored with a registered account's id. inline is not supported yet and returns 400 invalid-request.

stored
inline

Show child attributes

destination

stored · object

required

A payment account in a quote, tagged by type. Use stored with a registered account's id. inline is not supported yet and returns 400 invalid-request.

stored
inline

Show child attributes

sourceAmount

string

required

Amount the source sends, as a positive decimal string.

Example:

"1000"

sourceAsset

string

required

An asset from GET /supported_assets: a currency code such as MXN for a fiat source, or a token's asset for a crypto source.

Example:

"MXN"

destinationAsset

string

required

An asset from GET /supported_assets: a currency code for a fiat destination, or a token's asset for a crypto destination.

Example:

"USDC:GA5ZSEJYB37JRC5AVCIA5MOP4RHTM335X2KGX3IHOJAPP5RE34K4KZVN"

sourceRail

enum<string>

The rail the source moves on. Omit to use the source account's default rail.

Available options:

spei,

pix,

solana,

base,

polygon,

monad,

stellar,

avalanche

destinationRail

enum<string>

The rail the destination moves on. Omit to use the destination account's default rail.

Available options:

spei,

pix,

solana,

base,

polygon,

monad,

stellar,

avalanche

partnerFeeBpsOverride

integer

Partner fee for this quote in basis points, in place of your organization's default partner fee. Values above 500 are capped at 500.

Required range: x >= 0

Response

The quote.

quoteId

string<uuid>

required

Pass to POST /organization/{organizationId}/order. Becomes the order's id.

sourceAmount

string

required

Decimal string.

destinationAmount

string

required

Decimal string. What the destination receives after fees. On an onramp into a stablebond, we price the bond at the end of the order's funding window, so this is slightly less than today's price gives. See Fees.

sourceAsset

string

required

destinationAsset

string

required

sourceRail

enum<string>

required

The network that moves the money. For a wallet, the rail is its chain.

Available options:

spei,

pix,

solana,

base,

polygon,

monad,

stellar,

avalanche

destinationRail

enum<string>

required

The network that moves the money. For a wallet, the rail is its chain.

Available options:

spei,

pix,

solana,

base,

polygon,

monad,

stellar,

avalanche

rateAfterFees

string

required

The rate the customer gets after fees, as a decimal string.

rateBeforeFees

string

required

The rate before our fee, as a decimal string.

feeBps

integer

required

Total fee in basis points.

feeAmount

string

required

Total fee as a decimal string, in the source asset, rounded down to that asset's decimals. Each line in fees is in its own asset, so the lines do not add up to this total when their assets differ.

fees

object[]

required

The fee lines. The order created from this quote returns the same lines.

Show child attributes

createdAt

string<date-time>

required

expiresAt

string<date-time>

required

Create the order before this time. 2 minutes after createdAt.

midMarketRate

string

The mid-market FX rate, as a decimal string. Present only on quotes that convert between currencies.

User Authentication

Payment Accounts

Quotes

Orders

Webhook Subscriptions

Webhook Events

Organizations

Members

KYC

KYB

Assets

Statements

Sandbox

Lookup API

Create quote

Authorizations

Path Parameters

Body

Response