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Step 2 — Build Payload

Send one or more Step 1 responses in msgs to get a signable payload.

Endpoint​

Meta Sign

Request​

{
  "msgs": [
    {
      "msg": {
        "target": "euclid1...",
        "call_data": "{...}"
      },
      "type": "swap",
      "token_in": "stt",
      "token_out": "euclid",
      "token": "",
      "amount_in": "100000000000000000",
      "amount_out": "1206"
    }
  ],
  "sender_address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1",
  "sender_chain_uid": "monad"
}

Response​

{
  "cosmos_raw_payload": "...",
  "evm_raw_payload": "...",
  "meta": [
    {
      "type": "swap",
      "token_in": "stt",
      "token_out": "euclid",
      "amount_in": "100000000000000000"
    }
  ],
  "payload": {
    "signer_address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1",
    "signer_prefix": "0x",
    "signer_chain_uid": "monad",
    "call_data": [
      {
        "target": "euclid1...",
        "call_data": "{...}"
      }
    ],
    "expiry": 1772797186,
    "nonce": "1772796886"
  },
  "types": ["swap"]
}

How To Build Next Step Input​

Use these response fields directly in Step 4 broadcast request:

  • payload -> broadcast call_data
  • types -> broadcast types
  • meta -> broadcast meta (optional but recommended)

And use payload or raw payload string for signing in Step 3.

Next: Sign Payload