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Documentation Index

Fetch the complete documentation index at: https://docs.peaq.xyz/llms.txt

Use this file to discover all available pages before exploring further.

Use this service to query USDT balances for any EVM address on peaq EVM. The call is read-only and does not require the address to exist in the local registry.

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Service Reference

ServiceTypePurpose
/peaq_tether_node/usdt/balancepeaq_ros2_interfaces/srv/TetherGetUsdtBalanceReturn USDT balance for an address

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Launch Prerequisites

Start peaq_tether_node once, then call services as needed.
  • To start/stop the node (tmux + background options), follow the steps in Service Index.
  • In any new terminal where you run ros2 commands, make sure you’ve sourced your ROS/workspace environment and set the same ROS_DOMAIN_ID as the node:
# source /opt/ros/<your_ros_distro>/setup.bash
# source <path to your peaq-robotics-ros2 clone>/install/setup.bash
export ROS_DOMAIN_ID="${ROS_DOMAIN_ID:-94}"

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Check Balance

export ROS_DOMAIN_ID="${ROS_DOMAIN_ID:-94}"
ros2 service call /peaq_tether_node/usdt/balance \
  peaq_ros2_interfaces/srv/TetherGetUsdtBalance \
  "{address: '0x...'}"
Response fields:
  • balance_raw: base-10 string (uint256)
  • balance_formatted: formatted using configured decimals (default 6 for peaq USDT)

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Tips

  • If you hit provider rate limits, retry after a short delay or use a higher-throughput RPC endpoint.
  • Keep the USDT contract address in config in quotes (YAML) to avoid type parsing issues.