Configures whether the response object is JSON or MessagePack encoded. If not provided, defaults to JSON.
Request type for simulation endpoint.
Allows transactions without signatures to be simulated as if they had correct signatures.
Lifts limits on log opcode usage during simulation.
Allows access to unnamed resources during simulation.
Applies extra opcode budget during simulation for each transaction group.
If provided, specifies the round preceding the simulation. State changes through this round will be used to run this simulation. Usually only the 4 most recent rounds will be available (controlled by the node config value MaxAcctLookback). If not specified, defaults to the latest available round.
POST /v2/transactions/simulate HTTP/1.1
Host: algo.nownodes.io
X-Algo-API-Token: YOUR_API_KEY
Content-Type: application/json
Accept: */*
Content-Length: 253
{
"allow-empty-signatures": true,
"allow-more-logging": true,
"allow-unnamed-resources": true,
"exec-trace-config": {
"enable": true,
"scratch-change": true,
"stack-change": true,
"state-change": true
},
"extra-opcode-budget": 1,
"round": 1,
"txn-groups": [
{
"txns": [
"text"
]
}
]
}{
"eval-overrides": {
"allow-empty-signatures": true,
"allow-unnamed-resources": true,
"extra-opcode-budget": 1,
"max-log-calls": 1,
"max-log-size": 1
},
"exec-trace-config": {
"enable": true,
"scratch-change": true,
"stack-change": true,
"state-change": true
},
"initial-states": {
"app-initial-states": [
{
"app-boxes": {
"account": "text",
"kvs": [
{
"key": "Ynl0ZXM=",
"value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
}
}
]
},
"app-globals": {
"account": "text",
"kvs": [
{
"key": "Ynl0ZXM=",
"value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
}
}
]
},
"app-locals": [
{
"account": "text",
"kvs": [
{
"key": "Ynl0ZXM=",
"value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
}
}
]
}
],
"id": 1
}
]
},
"last-round": 1,
"txn-groups": [
{
"app-budget-added": 1,
"app-budget-consumed": 1,
"failed-at": [
1
],
"failure-message": "text",
"txn-results": [
{
"app-budget-consumed": 1,
"exec-trace": {
"approval-program-hash": "Ynl0ZXM=",
"approval-program-trace": [
{
"pc": 1,
"scratch-changes": [
{
"new-value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
},
"slot": 1
}
],
"spawned-inners": [
1
],
"stack-additions": [
{
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
}
],
"stack-pop-count": 1,
"state-changes": [
{
"account": "text",
"app-state-type": "text",
"key": "Ynl0ZXM=",
"new-value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
},
"operation": "text"
}
]
}
],
"clear-state-program-hash": "Ynl0ZXM=",
"clear-state-program-trace": [
{
"pc": 1,
"scratch-changes": [
{
"new-value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
},
"slot": 1
}
],
"spawned-inners": [
1
],
"stack-additions": [
{
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
}
],
"stack-pop-count": 1,
"state-changes": [
{
"account": "text",
"app-state-type": "text",
"key": "Ynl0ZXM=",
"new-value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
},
"operation": "text"
}
]
}
],
"clear-state-rollback": true,
"clear-state-rollback-error": "text",
"inner-trace": "[Circular Reference]",
"logic-sig-hash": "Ynl0ZXM=",
"logic-sig-trace": [
{
"pc": 1,
"scratch-changes": [
{
"new-value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
},
"slot": 1
}
],
"spawned-inners": [
1
],
"stack-additions": [
{
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
}
],
"stack-pop-count": 1,
"state-changes": [
{
"account": "text",
"app-state-type": "text",
"key": "Ynl0ZXM=",
"new-value": {
"bytes": "Ynl0ZXM=",
"type": 1,
"uint": 1
},
"operation": "text"
}
]
}
]
},
"logic-sig-budget-consumed": 1,
"txn-result": {
"application-index": 1,
"asset-closing-amount": 1,
"asset-index": 1,
"close-rewards": 1,
"closing-amount": 1,
"confirmed-round": 1,
"global-state-delta": [
{
"key": "text",
"value": {
"action": 1,
"bytes": "text",
"uint": 1
}
}
],
"inner-txns": "[Circular Reference]",
"local-state-delta": [
{
"address": "text",
"delta": [
{
"key": "text",
"value": {
"action": 1,
"bytes": "text",
"uint": 1
}
}
]
}
],
"logs": [
"Ynl0ZXM="
],
"pool-error": "text",
"receiver-rewards": 1,
"sender-rewards": 1,
"txn": {}
},
"unnamed-resources-accessed": {
"accounts": [
"text"
],
"app-locals": [
{
"account": "text",
"app": 1
}
],
"apps": [
1
],
"asset-holdings": [
{
"account": "text",
"asset": 1
}
],
"assets": [
1
],
"boxes": [
{
"app": 1,
"name": "Ynl0ZXM="
}
],
"extra-box-refs": 1
}
}
],
"unnamed-resources-accessed": {
"accounts": [
"text"
],
"app-locals": [
{
"account": "text",
"app": 1
}
],
"apps": [
1
],
"asset-holdings": [
{
"account": "text",
"asset": 1
}
],
"assets": [
1
],
"boxes": [
{
"app": 1,
"name": "Ynl0ZXM="
}
],
"extra-box-refs": 1
}
}
],
"version": 1
}