Index onlineMerchant portal
Api Endpoint

ISHOB

Simulate a transaction before signing it: what leaves and enters the wallet (native, ERC-20, NFTs, SPL) with USD values, approvals granted (unlimited / to non-contracts), revert reason, gas and fee, plus a risk level. EVM chains via eth_simulateV1 (raw call: from, to, data, value); Solana via simulateTransaction (base64 transaction, unsigned is fine). Nothing is broadcast.

Open interactive test console

Offering

Provider
api.ishob.com
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Blockchain And Crypto
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://api.ishob.com/v1/crypto/simulate-tx
MIME type
Not provided
First seen
2026-10-16T01:50:24.663Z
Last seen
Tags
Research, scientific-literature, open-access, dataset, JSON

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.0015 USDC
Atomic price: 1500 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "1500",
    "payTo": "0x906F87F107B4675dD890b3f8EB2d51885E50e09d"
  }
]

Observed health

Status
Healthy
Latest latency
285 ms
Average latency
922 ms
HTTP status
204
Last checked
Reachability
92.9% over 14 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "additionalProperties": false,
  "properties": {
    "body": {
      "properties": {
        "chain": {
          "enum": [
            "ethereum",
            "base",
            "arbitrum",
            "optimism",
            "polygon",
            "bsc",
            "solana"
          ],
          "type": "string"
        },
        "data": {
          "description": "EVM: calldata hex (default 0x)",
          "type": "string"
        },
        "from": {
          "description": "EVM: sender address",
          "type": "string"
        },
        "gas": {
          "description": "EVM: optional gas limit",
          "type": "string"
        },
        "to": {
          "description": "EVM: target address",
          "type": "string"
        },
        "transaction": {
          "description": "Solana: base64-encoded transaction (legacy or v0; signatures not required)",
          "type": "string"
        },
        "value": {
          "description": "EVM: value in wei (decimal or 0x hex)",
          "type": "string"
        }
      },
      "required": [
        "chain"
      ],
      "type": "object"
    },
    "bodyType": {
      "enum": [
        "json",
        "form-data",
        "text"
      ],
      "type": "string"
    },
    "method": {
      "enum": [
        "POST"
      ],
      "type": "string"
    },
    "type": {
      "const": "http",
      "type": "string"
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "type": "object"
}

Output schema

{
  "properties": {
    "example": {
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}