ETHDENVER COINGECKO AIRNODE WEB REQUEST DEMO

This repo contains the config files and parameters to interact with the coingecko airnode.

Each request will use the following parameters:

Parameter	Value	Description
Airnode Rrp	0xC11593B87f258672b8eB02d9A723a429b15E9E03	The address of the Airnode Request Response Protocol Contract
Airnode	0xDB4d9ED032aDC7261b3f6D670E73251a7A716548	The address of the coingecko airnode
Airnode Xpub	xpub6CneVR8ERgungaEsu6LwZo31xqVhvdmvr7VuYDLRW3SKqshok3GajDxxjWUxsbsoAsFmsWvjKfZKSczfc6pNpnUADo3NSTxknBf1d1pWmZk	The extended public key of the coingecko airnode
EndpointId	0xfb87102cdabadf905321521ba0b3cbf74ad09c5d400ac2eccdbef8d6143e78c4	The endpointId of the get latest price endpoint
Sponsor	Metamask Wallet address	The sponsor of the the requester contract
SponsorWallet	Derived from the Metamask Wallet address	The wallet derived from the sponsor address using the airnode's mnemonic
Parameters	-	"ethereum" encoded as bytes32

Deploy the Requester contract

Deploy the requester contract using REMIX and input the Airnode Rrp address into the constructor

Sponsor the requester contract on AirnodeRRP

Head over to the Airnode RRP page and set yourself as the sponsor of the requester contract

Derive the sponsorWallet address

npx @api3/airnode-admin derive-sponsor-wallet-address \
  --airnode-xpub xpub6CneVR8ERgungaEsu6LwZo31xqVhvdmvr7VuYDLRW3SKqshok3GajDxxjWUxsbsoAsFmsWvjKfZKSczfc6pNpnUADo3NSTxknBf1d1pWmZk
  --airnode-address 0xDB4d9ED032aDC7261b3f6D670E73251a7A716548 
  --sponsor-address metamask address

Encode the parameters

we need to encode the parameters to pass them onto the request, for now we will use 0x3162000000000000000000000000000000000000000000000000000000000000636f696e49640000000000000000000000000000000000000000000000000000657468657265756d000000000000000000000000000000000000000000000000 which is

[{ name: 'coinId', type: 'bytes32', value: "ethereum" }]

encoded into bytes32 using the @airnode-abi library.

Make the request

Now you can make the request and have it be fullfilled by the airnode.