Bagpipes Json API

xcmsend.github.io/api

Supported chains:

• Assethub(Polkadot)
• Polkadot
• HydraDx(Polkadot)
• Interlay(Polkadot)
• Turing(Kusama)
• Moonriver(Kusama)

DB:

Right now the API just use a simple key value inspired json file to store the diagram data, the file can be found at dist/src/api/urls2.json.
The format is {storage_key, compressed_diagramdata}

Reset db:

echo "{urls:[]}" > dist/src/api/urls2.json

Run Development Server

$ npm run start  

Build:

$ npm run build

Run the Build:

$ npm run api  

Note: If you want to enable webhooks, you need to set the enviromental variable:

$ export WEBHOOK_SITE_API_KEY =

Info:

Path: /api//scenario/info;

Get information about a scenario.

Code:

$ curl -X POST -H "Content-Type: application/json" -d '{"id": "Uvervffcw"}' http://localhost:8080/api/scenario/info
$ {"result":"assetHub > xTransfer > polkadot"}

Path: /api/actions/query:

Code:

curl -X POST -H "Content-Type: application/json" -d '{"chain": "polkadot", "pallet_name": "timestamp", "method_name": "now", "params": []}' http://localhost:8080/api/actions/query
{"result":"1,716,394,878,001"

Path: /api/actions/generic-tx-gen:

Description:

Code:

curl -X POST -H "Content-Type: application/json" -d '{"chain": "polkadot", "pallet_name": "System", "method_name": "remark", "params": ["0xDEADBEEF"]}' http://localhost:8080/api/actions/generic-tx-gen
{"result":"0x2004000010deadbeef"}

Path: /api/scenario/info/full;

Get full information about a scenario.

Code:

$ curl -X POST -H "Content-Type: application/json" -d '{"id": "Ts5hx-ng7"}' http://localhost:8080/api/scenario/info/full
{"result": "tx":"0xe804630903000100a10f0300010100f621771ddf37d482210b8c59617952eb1c2b40cfec55df47215231365186a057030400000000500000000000","summary":"polkadot > xTransfer > assetHub","asset":"0","amount":"20","source_chain":"polkadot","dest_chain":"assetHub","txtype":"xTransfer"}}

Note: replace Ts5hx-ng7 with your scenario id key.

Output format:

{
  "result": {
    "tx": "0xe804630903000100a10f0300010100f621771ddf37d482210b8c59617952eb1c2b40cfec55df47215231365186a057030400000000500000000000",
    "summary": "polkadot > xTransfer > assetHub",
    "asset": "0",
    "amount": "20",
    "source_chain": "polkadot",
    "dest_chain": "assetHub",
    "txtype": "xTransfer"
  }
}

TODO

Path: /api/scenario/create;

Create a new scenario.

Code:

$ curl -X POST -H "Content-Type: application/json" -d '{"source_chain": "turing", "dest_chain": "moonriver", "destination_address": "my dest address goes here", "amount": 100, "assetid": 0}' http://localhost:8080/api/scenario/create 

After your scenario id is generated, you can import it in the ui:
http://localhost:5173/#/create/?diagramData=MY_SCENARIO_ID

TODO

Path: /api/xcm/asset-transfer:

Generate a raw xcm transaction.

Code example:

curl -X POST http://127.0.0.1:8080/api/xcm/asset-transfer   -H "Content-Type: application/json"   -d '{
    "sourchain": "polkadot",
    "destchain": "assetHub",
    "assetid": "0",
    "amount": 1000000000,
    "destinationaddress": "5GYdCV9F3gg9gnmWU8nrt8tXCxMXDbcGpsdX1gJStCx9yZKK"
  }'

Result:

{"txdata":"0xf404630903000100a10f0300010100c63c1fb2c2d4a97b9aa07b951159b273e0d6a740914f71c074a93499d10e3e4503040000000002286bee0000000000"}

input:

• sourchain = assethub/hydradx/polkadot
• deschain = hydradx/polkadot/assethub
• assetid = id of asset to send
• amount = raw amount to send
• destination address = address of reciever on the destination chain

The developer can then create their own frontend so that their user can sign the transaction. Thereafter, the transaction can be broadcast.

Path: /api/hrmp/polkadot/openchannels:

Information:

Check what hrmp channels are avaliable for a parachain connected to polkadot.

Code example:

curl -X POST -H "Content-Type: application/json" -d '{"paraid": 1000}' http://localhost:8080/api/hrmp/polkadot/openchannels

Input:

{"open_hrmp_channels":[1001,1002,2000,2004,2006,2007,2011,2012,2013,2030,2031,2032,2034,2035,2040,2046,2048,2051,2094,2101,2104],"sourcechain":1000}

input:
paraid = the paraid(as number) of the chain

Path: /api/chain/Broadcast

Broadcast a transaction using author submit extrinsics.

Example code:

curl -X POST -H "Content-Type: application/json" -d '{
  "chain": "polkadot",
  "tx": "0x91028400f2529946850f8dd66c794a795a6b01a911f25df007e4cf5f97f38a037380f2500114903d6caaa301dfc22a6d19df61ba38b547a70a492eb57bcdcb9298161b18562e13421b314c22a9e007c9e49583f77bb0faf7047f6456c78c5487225e1a8f84b500a50200630903000100a10f0300010100f2529946850f8dd66c794a795a6b01a911f25df007e4cf5f97f38a037380f25003040000000002286bee0000000000"
}' http://127.0.0.1:8080/api/chain/Broadcast

{"status":"broadcasted","hash":"0xf9b86cd2121c25685b5bbf9efffc5f6c81e7d3b568811860de36dccb09837d2b"}

input:

• chain = assethub/hydradx/polkadot
• tx = signed transaction

Testing broadcast:

In order to test the broadcast feature a user must:

• 1: git clone https://github.com/XcmSend/api/
• 2: edit src/api/tests.ts
• 3: change the seedphrase to an account that has enough tokens to pay tx fee's in the get_test_acccount function:

export function get_test_account() {

	const e0 = new Keyring({ type: 'sr25519' });
	const account = e0.addFromUri('SET SEEDPHRASE HERE');

	return account;
}

• 4: last but no least, the person needs to uncomment the following lines in the broadcast_transaction function

  //  const bhash = await broadcastToChain('polkadot', testo);
 //   console.log(`blockhash published: `, bhash.toString());

• 5: Configure the right key in get_test_account and run: npm run test

tx_si start
generating tx..
route_tx start
polkadot:hydradx
handleTransfer for Polkadot to HydraDx...
cant connect
connect
drafting dot to hydradx
Creating tx
4
rawtx: 0xf404630803000100c91f0300010100f43376315face751ae6014e8a94301b2c27c0bc4a234e9997ed2c856d13d3d2f030400000000823801000000000000
Signature:  0x8d0284005400e2f7f5669b26998d8e4d3c1a2c8a2d0a9af827ca54a1cc3509105035c32e01286f7090ae34a1e3b8827ef9c035ede86a2b3e5c16bb6df072541327c7797d07e5934e245ae7c9ce199b2212fe559ff2df0a9ad1d66421aa3828223d8b2e9c8b45020400630803000100c91f0300010100f43376315face751ae6014e8a94301b2c27c0bc4a234e9997ed2c856d13d3d2f030400000000823801000000000000
Verfied tx: 0x8d0284005400e2f7f5669b26998d8e4d3c1a2c8a2d0a9af827ca54a1cc3509105035c32e01286f7090ae34a1e3b8827ef9c035ede86a2b3e5c16bb6df072541327c7797d07e5934e245ae7c9ce199b2212fe559ff2df0a9ad1d66421aa3828223d8b2e9c8b45020400630803000100c91f0300010100f43376315face751ae6014e8a94301b2c27c0bc4a234e9997ed2c856d13d3d2f030400000000823801000000000000

Copy the verified tx and curl it to the broadcast api:

curl -X POST -H "Content-Type: application/json" -d '{
  "chain": "polkadot",
  "tx": "0x8d0284005400e2f7f5669b26998d8e4d3c1a2c8a2d0a9af827ca54a1cc3509105035c32e01286f7090ae34a1e3b8827ef9c035ede86a2b3e5c16bb6df072541327c7797d07e5934e245ae7c9ce199b2212fe559ff2df0a9ad1d66421aa3828223d8b2e9c8b45020400630803000100c91f0300010100f43376315face751ae6014e8a94301b2c27c0bc4a234e9997ed2c856d13d3d2f030400000000823801000000000000"
}' http://127.0.0.1:8080/broadcast

Result:
{"status":"broadcasted","hash":"0xf9b86cd2121c25685b5bbf9efffc5f6c81e7d3b568811860de36dccb09837d2b"}

Public instance:

$ curl https://api.xcmsend.com
{"success":true,"documentation":"https://xcmsend.github.io/api/index.html"}