Deep Link

DApp Browser

• Url: https://link.onto.app/open_url?chain=eth,polygon&url=https://compound.finance

• Params:

name	required	description
chain	true	chain type,can be multiple, separated by ',', see details in Chain Enum
url	true	DApp link

Open Token

• Url: https://link.onto.app/open_token?chain=bsc&token=BNB

• Params:

name	required	description
chain	true	chain type, see details in Chain Enum
token	true	token contract address or the unique id, native token's symbol

Add Token

• Url: https://link.onto.app/add_token?chain=bsc&token=0x55d398326f99059ff775485246999027b3197955

• Params:

name	required	description
chain	false	chain type, see details in Chain Enum
token	true	token contract address or the unique id, native token's symbol

Receive Token

• Url: https://link.onto.app/receive?chain=bsc&token=0x55d398326f99059ff775485246999027b3197955&amount=1

• Params:

name	required	description
chain	true	chain type, see details in Chain Enum
token	true	token contract address or the unique id, native token's symbol
amount	false	receiving amount (without decimals)

Send Payment

• Url: https://link.onto.app/send?chain=bsc&token=0x55d398326f99059ff775485246999027b3197955&address=0x650b5e446edabad7eba7fa7bb2f6119b2630bfbb&amount=1&memo=test

• Params:

name	required	description
chain	true	chain type, see details in Chain Enum
token	true	token contract address or the unique id, native token's symbol
address	false	receiving address
amount	false	sending amount (without decimals)
memo	false	required if transfer needs

Stake

• Url: https://link.onto.app/stake?chain=ont&publicKey=&amount=

• Params:

name	required	description
chain	true	chain type, now supports ont
publicKey	false	node public key when chain=ont
amount	false	when chain=ont, staking amount (integer, without decimals)

Unstake

• Url: https://link.onto.app/unstake?chain=ont&publicKey=&amount=

• Params:

name	required	description
chain	true	chain type, now supports ont
publicKey	false	node public key when chain=ont
amount	false	when chain=ont, unstaked amount(integer, without decimals)

Claim

• Url: https://link.onto.app/stake_claim_rewards?chain=ont

• Params:

name	required	description
chain	true	chain type, now supports ont

Open Swap

• Url: https://link.onto.app/swap?chain=bsc&fromToken=&toToken=

• Params:

name	required	description
chain	true	Chain type, see Chain Enum
fromToken	true	Source token contract address or unique id, pass symbol for native token
toToken	true	Target token contract address or unique id, pass symbol for native token

Open Bridge

• Url: https://link.onto.app/bridge?fromChain=bsc&toChain=ont_evm&fromToken=&toToken=

• Params:

name	required	description
fromChain	true	Source chain type, see Chain Enum
fromToken	true	Source token contract address or unique id, pass symbol for native token
toChain	true	Target chain type, see Chain Enum
toToken	true	Target token contract address or unique id, pass symbol for native token

Transaction detail

• Url: https://link.onto.app/tx_detail?senderAddress=&receiverAddress=&txHash=&chain=&amount=&symbol=&isSender=

• Params:

name	required	description
senderAddress	true	Sender address
receiverAddress	true	Receiver address
txHash	true	Transaction hash
chain	true	Chain type
amount	true	Transfer amount
symbol	true	Token symbol
isSender	true	Is transaction sender

Monitored address records

• Url: https://link.onto.app/monitor_record?ontId=&address=&note=

• Params:

name	required	description
ontId	true	Monitored Ont ID
address	true	Monitored address
note	true	Monitor name

My Staking

• Url: https://link.onto.app/my_staking?chain=ont

• Params:

name	required	description
chain	true	Chain type, currently supports ont

Invite friends

• Url: https://link.onto.app/invite_friends?ontId=

• Params:

name	required	description
ontId	false	User OntID

Run Ontology Node

• Url: https://link.onto.app/run_ont_node

Earn

• Url: https://link.onto.app/earn?chain=eth&name=&token=

• Params:

name	required	description
chain	true	Chain type, currently supports eth, ton
name	true	Protocol name, e.g., Lido, Tonstakers
token	true	Staking Token: ETH, TON

Onto Connect

• Url: https://link.onto.app/connect?id=1&chain=eth&method=&params=&dappInfo=

• Params:

name	required	description
id	true	Call ID
chain	true	Chain type
method	true	Connection request method
params	true	Parameters, base64Url format
dappInfo	true	Caller DApp information, base64Url format

About dappInfo

DApp information, JSON format, passed in base64Url format
Example:
**dappInfo Object**:
{
  "name": "Dapp name",
  "url": "https://xxx.dapp.io",
  "icon": "https://xxx.dapp.png",
  "callback":"https://link.xxx.app"
}

**content**:
eyJuYW1lIjoiRGFwcCBuYW1lIiwidXJsIjoiaHR0cHM6Ly94eHguZGFwcC5pbyIsImljb24iOiJodHRwczovL3h4eC5kYXBwLnBuZyIsImNhbGxiYWNrIjoiaHR0cHM6Ly9saW5rLnh4eC5hcHAifQ==

About callback

callback: Third-party app callback deep link, ONTO will automatically append parameters: id, result, or error
e.g.:
https://link.xxx.app?id=1&result=eyJhZGRyZXNzIjoiMHhmODI2MzQ4...
https://link.xxx.app?id=1&error=eyJjb2RlIjoxLCJtZXNzYWdlIjoiZXJyb3IgZGV0YWlsIn0=

About result

If successful, returns result information; does not return error information.
result is JSON, passed in base64Url format
{
    "key1":"",
    "key2":""
}

About error

If failed, returns error information; does not return result information.
error is JSON, passed in base64Url format
{
    "code":1,
    "message":"error detail"
}

About method and params

1.
method: eth_requestAccounts
params: []

method: ont_requestAccounts
params: []

return: 
{
    "address":""
}

Supported chain: EVM chains (eth_requestAccounts) and Ontology (ont_requestAccounts)

2.
method: personal_sign
params: ["0xdeadbeaf","0x9b2055d370f73ec7d8a03e965129118dc8f5bf83"]

DATA 1, message to sign. Hex string or UTF-8 string.
DATA 2, address.

return: 
EVM:
{
    "signature":""
}

Ontology:
{
    "signature":"",
    "publicKey":""
}

Supported chain: EVM chains and Ontology
If chain is an EVM chain,
ONTO will sign with sign(keccak256("\x19Ethereum Signed Message:\n" + len(message) + message))

If chain is ont,
ONTO will sign with sign("\x19Ontology Signed Message:\n" + len(message) + message)

3.
method: eth_signTypedData
params: ["0x9b2055d370f73ec7d8a03e965129118dc8f5bf83", {message to sign containing type information, a domain separator, and data}]

DATA 1, address.
DATA 2, message to sign containing type information, a domain separator, and data.

return: 
{
    "signature":""
}

Supported chain: EVM chains

---

Available domains links:

• https://link.onto.app

• ontoprovider://link

---

Chain Enum

chain name	Enum
Ontology	ont
Ethereum	eth
Kaia	kaia
Bitcoin	btc
Tron	trx
Polkadot	dot
Kusama	ksm
BNB Smart Chain	bsc
Solana	sol
Polygon	polygon
Neo3	neo3
Arbitrum One	arbitrum
Harmony	harmony
IoTeX EVM	iotex
FIO	fio
Avalanche C-Chain	avalanche
Ontology EVM	ont_evm
Boba	boba
NEAR	near
zkSync Lite	zksync
OP Mainnet	optimism
XDC Network	xinfin
Vision	vision
Aurora	aurora
Bittorent Chain	bittorrent
Aptos	aptos
Fantom	fantom
Gnosis Chain	gnosis
Arbitrum Nova	arbitrum_nova
PlatON	platon
Kava	kava
Cronos Chain	cronos
zkSync Era	zksync_v2
BRISE Chain	bitgert
Telos EVM	telos
KuCoin Community Chain	kcc
Metis	metis
Litecoin	ltc
XRP	ripple
XRP EVM	ripple_evm
ENULS	enuls
Celo	celo
Canto	canto
Sui	sui
Neon	neon
Astar	astar
Chiliz EVM	chiliz_evm
Moonbeam	moonbeam
Moonriver	moonriver
Oasis Emerald	oasis_emerald
Polygon zkEVM	polygon_zkevm
Filecoin EVM	fil_evm
Flare	flare
Mantle	mantle
Base	base_evm
Fuse	fuse
Scroll	scroll
X Layer	xlayer
Velas	velas
Core	core
Linea	linea
ZKFair	zkfair
Blast	blast
TON Chain	ton
SONIC	sonic_evm
BERA Chain	bera
Manta Pacific	manta
Plasma	plasma
HyperEVM	hyper_evm