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Send ETH & Tokens API

This small backend enables you to send ETH & Tokens to Ethereum based blockchains.

How to use it

• Step #1: Fork the project and give it a star
• Step #2: Copy the api_config.example.json to api_config.json and edit it with the link to your blockchain (you can use infura for rinkeby, main-net)
• Step #3: Build & run with: go build -o server; ./server
• Step #4: ??
• Step #5: Profit!!!

Note about security:

• This api should run on localhost!
• If you need to expose it, make a reverse nginx proxy and configure it for https!

API's

GET /api/v1/

general info about the connection with the blockchain

GET /api/v1/health

health about how much resources this mini-server takes

params: address

Example:

curl --request GET \
  --url 'http://localhost:9090/api/v1/balance/token?contract=0x991c43f15b7d286f473e644df689dc3d722b58b2&address=0x5d924b2D34643B4Eb7D4291fDcb07236963f040f' \
  --header 'Content-Type: application/json'

GET /api/v1/balance/eth

gets the ETH balance.

params: address

Example:

curl --request GET \
  --url 'http://localhost:9090/api/v1/balance/eth?address=0xF69D65f241a523837c7F37f8B38328176416E771' \
  --header 'Content-Type: application/json'

GET /api/v1/balance/token

gets the token balance.

params: contract, address

Example:

curl --request GET \
  --url 'http://localhost:9090/api/v1/balance/token?contract=0x991c43f15b7d286f473e644df689dc3d722b58b2&address=0x5d924b2D34643B4Eb7D4291fDcb07236963f040f' \
  --header 'Content-Type: application/json'

PUT /api/v1/tx/send_eth

sends ETH to an address

params: to_address, sender_private_key, amount_in_wei

Example:

curl --request PUT \
  --url 'http://localhost:9090/api/v1/tx/send_eth?to_address=0xF69D65f241a523837c7F37f8B38328176416E771&sender_private_key=908550C596A682C500FE1013EB3CEB5A8421FC62D6FF1F81CCDFEDD69768E560&amount_in_wei=100000000000000000' \
  --header 'Content-Type: application/json'

PUT /api/v1/tx/send_token

sends Tokens to an address

params: to_address, sender_private_key, contract, amount_in_wei

Example:

curl --request PUT \
  --url 'http://localhost:9090/api/v1/tx/send_token?to_address=0xF69D65f241a523837c7F37f8B38328176416E771&sender_private_key=908550C596A682C500FE1013EB3CEB5A8421FC62D6FF1F81CCDFEDD69768E560&contract=0x991c43f15b7d286f473e644df689dc3d722b58b2&amount_in_wei=1000000000000000000' \
  --header 'Content-Type: application/json'

TODO:

• sanitize inputs
• docker ?
• any suggestions ?

Thanks to:

https://github.com/hunterlong/tokenbalance for the tokens generic bindings.

License: GPL-3.0