curl "https://sandbox-api.tender.cash/v1/api/conversions/swap/chains?coin=usdt" \
-H "x-access-id: your-access-id-here" \
-H "x-request-id: 550e8400-e29b-41d4-a716-446655440000" \
-H "x-timestamp: 2026-10-15T09:45:53.000Z" \
-H "authorization: <signature>"
{
"status": "success",
"message": "success",
"data": [
{
"id": "ethereum",
"name": "Ethereum",
"icon": "https://tender-store.s3.amazonaws.com/icons/ethereum.png",
"coin": "ETH",
"chainType": "evm",
"explorer": "https://etherscan.io",
"status": "active"
}
]
}
Conversions
Swap-Enabled Chains
List the chains that support conversions, optionally filtered by coin
GET
/
v1
/
api
/
conversions
/
swap
/
chains
curl "https://sandbox-api.tender.cash/v1/api/conversions/swap/chains?coin=usdt" \
-H "x-access-id: your-access-id-here" \
-H "x-request-id: 550e8400-e29b-41d4-a716-446655440000" \
-H "x-timestamp: 2026-10-15T09:45:53.000Z" \
-H "authorization: <signature>"
{
"status": "success",
"message": "success",
"data": [
{
"id": "ethereum",
"name": "Ethereum",
"icon": "https://tender-store.s3.amazonaws.com/icons/ethereum.png",
"coin": "ETH",
"chainType": "evm",
"explorer": "https://etherscan.io",
"status": "active"
}
]
}
Auth method: Signed (HMAC) — this endpoint requires the full set of signed
headers:
x-access-id, x-request-id, x-timestamp, and an HMAC-SHA256
authorization signature. See Authentication.Headers
string
required
Base64-encoded HMAC-SHA256 signature of
{"timeStamp":"<x-timestamp>","requestId":"<x-request-id>","accessId":"<x-access-id>"}, signed with your access secret. The request body is not part of the signature.Example: "pV3n0o8kq0lK2mJ8bZ1yq3Yt6hR0cXK9u4mVJ2l9sE0="string
required
ISO 8601 timestamp; must be within 5 minutes of server timeExample:
"2026-10-15T09:45:53.000Z"string
required
A unique UUID v4 per requestExample:
"550e8400-e29b-41d4-a716-446655440000"string
required
Your API access ID provided by TenderExample:
"your-access-id-here"Query parameters
string
Return only chains that support this coin. Accepts the coin ID or its symbol. If the coin is
unknown or not swap-enabled,
data is an empty array.Example: "usdt"Response
string
required
success on successExample: "success"string
required
Human-readable result messageExample:
"success"array
required
Active chains that have swaps enabled
Show chain object
Show chain object
string
Chain ID. Use it as
chain or toChain in conversion requests.Example: "ethereum"string
Display nameExample:
"Ethereum"string
Chain icon URLExample:
"https://tender-store.s3.amazonaws.com/icons/ethereum.png"string
Native coin symbolExample:
"ETH"string
Blockchain family (for example
evm, sol, tron, btc, stellar)Example: "evm"string
Block explorer URL (may be empty)Example:
"https://etherscan.io"string
Always
active in this listExample: "active"curl "https://sandbox-api.tender.cash/v1/api/conversions/swap/chains?coin=usdt" \
-H "x-access-id: your-access-id-here" \
-H "x-request-id: 550e8400-e29b-41d4-a716-446655440000" \
-H "x-timestamp: 2026-10-15T09:45:53.000Z" \
-H "authorization: <signature>"
{
"status": "success",
"message": "success",
"data": [
{
"id": "ethereum",
"name": "Ethereum",
"icon": "https://tender-store.s3.amazonaws.com/icons/ethereum.png",
"coin": "ETH",
"chainType": "evm",
"explorer": "https://etherscan.io",
"status": "active"
}
]
}
Authorizations
Signed (HMAC) authentication. Required headers: x-access-id, x-request-id (UUID v4), x-timestamp (ISO 8601, must be within 5 minutes of server time), and authorization: the Base64 HMAC-SHA256 of the JSON string {"timeStamp":"","requestId":"","accessId":""} (keys in that order, no whitespace) using your access secret. The request body, method and path are not signed. The API key must be linked to an outlet.
Headers
Base64-encoded HMAC-SHA256 signature of {"timeStamp":"<x-timestamp>","requestId":"<x-request-id>","accessId":"<x-access-id>"}, signed with your access secret. The request body is not part of the signature.
ISO 8601 timestamp; must be within 5 minutes of server time
A unique UUID v4 per request
Query Parameters
Only chains supporting this coin (ID or symbol)