Meta Broadcast

Broadcast a signed meta-transaction payload to the network.

Request URL

https://testnet.api.euclidprotocol.com/api/v1/execute/meta-txn/broadcast

Examples

curl -X 'POST'   'https://testnet.api.euclidprotocol.com/api/v1/execute/meta-txn/broadcast'   -H 'accept: application/json'   -H 'Content-Type: application/json'   -d '{
  "call_data": {
    "call_data": [
      {
        "call_data": "{\"transfer\":{\"amount\":\"1000000\",\"from\":{\"chain_uid\":\"neuron\",\"address\":\"0x887e4aac216674d2c432798f851c1ea5d505b2e1\",\"amount\":\"1000000\"},\"msg\":\"\",\"recipient_address\":{\"user\":{\"chain_uid\":\"0g\",\"address\":\"0x5abfe1234567890cdefabc1234567890defabc01\",\"amount\":\"1000000\"},\"limit\":{\"less_than_or_equal\":\"1000000\"},\"preferred_denom\":{\"voucher\":{}},\"forwarding_message\":{\"data\":\"0x\"}},\"sender\":{\"chain_uid\":\"neuron\",\"address\":\"0x887e4aac216674d2c432798f851c1ea5d505b2e1\",\"amount\":\"1000000\"},\"timeout\":\"60\",\"token\":\"euclid\",\"tx_id\":\"\"}}",
        "target": "euclid1ywzqwvhmm58e02lvr579xlcn873kptl40a4teqnjd8t8kndfps7qdghdaq"
      }
    ],
    "expiry": 1768847504,
    "nonce": "1768847444",
    "signer_address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1",
    "signer_chain_uid": "neuron",
    "signer_prefix": "0x"
  },
  "chain_uid": "neuron",
  "pub_key": "0x02c1aab42e1e0f3e19d9c8e0f2f93d6c8b6b9e77f6f5d2a3b3a1f6f8a2f1b1c3d4",
  "signature": "0x2f9a4c8e0b7d3a1f9c4d6e8f7a5b3c1d9e0f2a4b6c8d0e1f2a3b4c5d6e7f8a9b",
  "types": [
    "transfer_voucher"
  ],
  "wallet_address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1"
}'

{
  "queue_id": "0x887e4aac216674d2c432798f851c1ea5d505b2e1-neuron-20260120161630"
}

curl -X 'POST'   'https://testnet.api.euclidprotocol.com/api/v1/execute/meta-txn/broadcast'   -H 'accept: application/json'   -H 'Content-Type: application/json'   -d '{
  "call_data": {
    "call_data": [
      {
        "call_data": "{\"transfer\":{\"amount\":\"1000000\",\"from\":{\"chain_uid\":\"bsc\",\"address\":\"0x887e4aac216674d2c432798f851c1ea5d505b2e1\",\"amount\":\"1000000\"},\"msg\":\"\",\"recipient_address\":{\"user\":{\"chain_uid\":\"0g\",\"address\":\"0x5abfe1234567890cdefabc1234567890defabc01\",\"amount\":\"1000000\"},\"limit\":{\"less_than_or_equal\":\"1000000\"},\"preferred_denom\":{\"voucher\":{}},\"forwarding_message\":{\"data\":\"0x\"}},\"sender\":{\"chain_uid\":\"bsc\",\"address\":\"0x887e4aac216674d2c432798f851c1ea5d505b2e1\",\"amount\":\"1000000\"},\"timeout\":\"60\",\"token\":\"euclid\",\"tx_id\":\"\"}}",
        "target": "euclid1ywzqwvhmm58e02lvr579xlcn873kptl40a4teqnjd8t8kndfps7qdghdaq"
      }
    ],
    "expiry": 1768847836,
    "nonce": "1768847776",
    "signer_address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1",
    "signer_chain_uid": "bsc",
    "signer_prefix": "0x"
  },
  "chain_uid": "bsc",
  "pub_key": "0x02c1aab42e1e0f3e19d9c8e0f2f93d6c8b6b9e77f6f5d2a3b3a1f6f8a2f1b1c3d4",
  "signature": "0x2f9a4c8e0b7d3a1f9c4d6e8f7a5b3c1d9e0f2a4b6c8d0e1f2a3b4c5d6e7f8a9b",
  "types": [
    "transfer_voucher"
  ],
  "wallet_address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1"
}'

{
  "queue_id": "0x887e4aac216674d2c432798f851c1ea5d505b2e1-bsc-20260120161734"
}

Decoded call_data (transfer example)

{
  "transfer": {
    "amount": "1000000",
    "from": {
      "chain_uid": "neuron",
      "address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1",
      "amount": "1000000"
    },
    "msg": "",
    "recipient_address": {
      "user": {
        "chain_uid": "0g",
        "address": "0x5abfe1234567890cdefabc1234567890defabc01",
        "amount": "1000000"
      },
      "limit": {
        "less_than_or_equal": "1000000"
      },
      "preferred_denom": {
        "voucher": {}
      },
      "forwarding_message": {
        "data": "0x"
      }
    },
    "sender": {
      "chain_uid": "neuron",
      "address": "0x887e4aac216674d2c432798f851c1ea5d505b2e1",
      "amount": "1000000"
    },
    "timeout": "60",
    "token": "euclid",
    "tx_id": ""
  }
}

Parameters

Field	Type	Description
call_data	object	Signed call data payload from the meta-txn/sign response.
chain_uid	string	Chain UID to broadcast on.
pub_key	string	Public key of the signer.
signature	string	Signature for the payload.
types	string[]	List of message types included in the payload.
wallet_address	string	Wallet address of the signer.

CallDataPayload

Field	Type	Description
call_data	object[]	Array of target call data items.
expiry	number	Expiry timestamp for the signed payload.
nonce	string	Nonce used for signing.
signer_address	string	Address of the signer.
signer_chain_uid	string	Chain UID of the signer.
signer_prefix	string	Prefix used for signing.

CallDataItem

Field	Type	Description
call_data	string	Encoded call data for the message.
target	string	Contract address to receive the meta transaction.