Our Stake creation and transaction crafting endpoints have been extended in a backwards compatible way to include a pre-prepared transaction payload and associated simulation and analysis. This update reduces the steps required by developers integrating our API as well as offering increased security and transparency.
Below is a snippet of the response from our stake creation endpoint
{
  "data": {
    "stake": {
      "stakeId": 10000028,
      "customerId": 52,
      ...
    },
    "message": "requested 10 validators successfully",
    "transaction": {
      "to": "0x4c9506eE2fCd962f03022D9d8ebf6f7828abEfaf",
      "data": "0xe2ee27bf0...a3211999de068801c16ce",
      "value": "1000000000000000000000",
      "gas": "581498",
      "nonce": 147,
      "chainId": 560048,
      "maxFeePerGas": "1194611555",
      "maxPriorityFeePerGas": "60913223",
      "serialized": "0x02f911fb83088...988007ba3211999de068801c16cec0",
      "analysis": {
        "observations": [
          {
            "source": "simulation",
            "message": "Balance changes detected in simulation",
            "severity": "info"
          },
          {
            "source": "simulation",
            "message": "Asset changes detected in simulation: 11 changes",
            "severity": "info"
          },
          {
            "source": "pier_two",
            "message": "Validator 0x8dd2c9fd... will reach the 2048 ETH cap in over 102 years based on 3% APY",
            "severity": "info"
          },
          ...
        ],
        "simulations": {
          "tenderly": {
            "shareUrl": "https://www.tdly.co/shared/simulation/01170f69-d93a-4140-9e3e-261565a8be14",
            "simulationId": "01170f69-d93a-4140-9e3e-261565a8be14",
            "success": true,
            "executionCost": 479608,
            "costPerUnit": "1194611555",
            "totalCost": "572945258670440",
            "logs": [
              {
                "name": "",
                "address": "0x00000000219ab540356cbb839cbe05303d7705fa",
                "data": "0x000000000000000000000...0000000000000000000000000000000000000000000000",
                "topics": [
                  "0x649bbc62d0e31342afea4e5cd82d4049e7e1ee912fc0889aa790803be39038c5"
                ]
              },
              {
                "name": "",
                "address": "0x4c9506ee2fcd962f03022d9d8ebf6f7828abefaf",
                "data": "0x0000000000000000000000000000000000000000000000056bc75e2d63100000",
                "topics": [
                  "0x07468d6bd11350def18feb2ba4201196d670bdf016f5e33b4cbf4c202b41fbbd",
                  "0xa07e447140b7e6f4872dfa8b26508f1e80388f080fe96faeb74315f70d7e9fe9",
                  "0x7b5f0c0e5d98da4494d7df821773de092e981a9440b5c1475e64828a211949a5"
                ]
              },
              ...
            ],
            "stateDiff": [
              {
                "address": "0x00000000219ab540356cbb839cbe05303d7705fa",
                "soltype": null,
                "original": null,
                "dirty": null,
                "raw": [
                  {
                    "address": "0x00000000219ab540356cbb839cbe05303d7705fa",
                    "key": "0x0000000000000000000000000000000000000000000000000000000000000000",
                    "original": "0x18e5b201d962ad2bb0e029e7ddcdf4329dd8f09dfb14b35543a91f6c22537122",
                    "dirty": "0xc529a0e2eff40592c475d7cd7c61216506565febfb1502c04231fff775b8f7a0"
                  }
                ]
              },
              {
                "address": "0x00000000219ab540356cbb839cbe05303d7705fa",
                "soltype": null,
                "original": null,
                "dirty": null,
                "raw": [
                  {
                    "address": "0x00000000219ab540356cbb839cbe05303d7705fa",
                    "key": "0x0000000000000000000000000000000000000000000000000000000000000001",
                    "original": "0x9c02acd520e570b1fa960560b0db1b2737e047c2ea5f6addf0e9d7eecad15672",
                    "dirty": "0xc73f118a007139dbf02375daadeaab6da93813f1c1fca977ceaa1e4798625818"
                  }
                ]
              },
              ...
            ],
            "balanceDiff": [
              {
                "address": "0x00000000219ab540356cBB839Cbe05303d7705Fa",
                "original": "9927884064266928000000000",
                "dirty": "9928884064266928000000000",
                "is_miner": false
              },
              {
                "address": "0x767f7576944D321374921DF138589a30e3C5030d",
                "original": "945142433358512830290448",
                "dirty": "945142433931458088481280",
                "is_miner": true
              },
              {
                "address": "0xC8CD785C6Ba55d71a6530c08d1DF7eCbf090299c",
                "original": "5044584205531764276095",
                "dirty": "4044583632586505605655",
                "is_miner": false
              }
            ],
            ...
          }
        }
      }
    }
  }
}