# AtomicDEX API configuration

AtomicDEX-API configuration parameters are listed in the source code (opens new window), along with additional runtime flags (opens new window), and per-process environment variables (opens new window)

# MM2.json

When running the AtomicDEX API via commandline with the mm2 binary, some basic configuration parameters need to be defined in either an MM2.json file, or at runtime.

Parameter Type Description
gui string Information about your GUI; place essential info about your application (name, version, etc.) here. For example: AtomicDEX iOS 1.0.1
netid integer Nework ID number, telling the AtomicDEX API which network to join. 7777 is the current main network, though alternative netids can be used for testing or "private" trades
passphrase string Your passphrase; this is the source of each of your coins private keys. KEEP IT SAFE!
allow_weak_password boolean If true, will allow low entropy rpc_password. If false rpc_password must not have 3 of the same characters in a row, must be between 8-32 characters in length, must contain at least one of each of the following: numeric, uppercase, lowercase, special character (e.g. !#$*). It also can not contain the word "password". Defaults to false.
rpc_password string Your password for protected RPC methods (userpass)
userhome string The path to your home, called from your environment variables and entered as a regular expression
dbdir string AtomicDEX API database path. Optional, defaults to a subfolder named DB in the path of your mm2 binary
rpcip string IP address to bind to for RPC server. Optional, defaults to 127.0.0.1
rpcport integer Port to use for RPC communication. Optional, defaults to 7783
i_am_seed boolean Runs AtomicDEX API as a seed node mode (acting as a relay for AtomicDEX API clients). Optional, defaults to false. Use of this mode is not reccomended on the main network (7777) as it could result in a pubkey ban if non-compliant. on alternative testing or private networks, at least one seed node is required to relay information to other AtomicDEX API clients using the same netID.
seednodes list of strings Optional. If operating on a test or private netID, the IP address of at least one seed node is required (on the main network, these are already hardcoded)

Example (allowing weak password):

{
  "gui": "DEVDOCS_CLI",
  "netid": 7777,
  "rpc_password": "ENTER_UNIQUE_PASSWORD",
  "passphrase": "ENTER_UNIQUE_SEED_PHRASE_DONT_USE_THIS_CHANGE_IT_OR_FUNDS_NOT_SAFU",
  "allow_weak_password": true,
  "userhome": "/${HOME#\"/\"}",
  "dbdir": "/path/to/DB/folder"
}

Example (not allowing weak password):

{
  "gui": "DEVDOCS_CLI",
  "netid": 7777,
  "rpc_password": "Ent3r_Un1Qu3_Pa$$w0rd",
  "passphrase": "ENTER_UNIQUE_SEED_PHRASE_DONT_USE_THIS_CHANGE_IT_OR_FUNDS_NOT_SAFU",
  "allow_weak_password": false,
  "userhome": "/${HOME#\"/\"}",
  "dbdir": "/path/to/DB/folder"
}

The mm2 binary will look for the MM2.json in the same folder as your mm2 binary, unless it is defined as being in a different path via the MM2_CONF_PATH environment variable. Alternatively, you can define the MM2.json parameters at runtime as below:

stdbuf -oL nohup ./mm2 "{\"gui\":\"DEVDOCS_CLI\",\"netid\":7777, \"userhome\":\"/${HOME#"/"}\", \"passphrase\":\"ENTER_UNIQUE_SEED_PHRASE_DONT_USE_THIS_CHANGE_IT_FUNDS_OR_NOT_SAFU\", \"rpc_password\":\"Ent3r_Un1Qu3_Pa$$w0rd\"}" &

TIP

When using the AtomicDEX API on a VPS without accompanying tools such as tmux or screen, it is recommended that the user add the command nohup to the AtomicDEX API launch command. This addition ensures that the AtomicDEX API instance is not shutdown when the user logs out.

Optional environment variables that can be user defined are as follows:

Variable Type Description
MM2_CONF_PATH string File path. MM2 will try to load the JSON configuration from this file. The file must contain valid json with structure mentioned above. Defaults to MM2.json in the same folder as your mm2 binary
MM_COINS_PATH string File path. MM2 will try to load coins data from this file. File must contain valid json. A comprehensive version for public use is maintained in the Komodo Platform coins github repository (opens new window)
MM_LOG string File path. Must end with '.log'. The AtomicDEX api will write logs to this file.
USERPASS string For convenience, this variable can store the value of your rpc_password to be referenced in any shell scripts

# Setting userpass Environment Variable

TIP

Userpass will be renamed to rpc_password for clarity in the near future

Make a new file in the ~/atomicDEX-API/target/debug directory called USERPASS and enter the following text, including the rpc_password you specified earlier:

export USERPASS="RPC_PASSWORD"

Save it, and then in the terminal execute:

source USERPASS

Test it by executing:

echo $USERPASS

You should see your USERPASS as a returned value.

TIP

The USERPASS environment variable will remain in our terminal's memory until we close the session. When we open up a new session later, we need to create the USERPASS environment variable again.

Refer to the rest of the AtomicDEX API documentation for details and examples of how to:

When you are finished, you can exit the AtomicDEX API using the following command:

curl --url "http://127.0.0.1:7783" --data "{\"userpass\":\"$userpass\",\"method\":\"stop\"}"

If you have any questions or feedback, join us on the Komodo Platform Discord Server (opens new window) and tell us about your experience!