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Api Endpoint

AgentsToolsHub

Explain what an EVM transaction would actually do: decodes the calldata (ERC-20 transfers/approvals via known ABIs, unknown selectors via the 4byte directory) and simulates the call against live chain state to report the outcome — including unlimited-approval warnings — without sending anything. Use this when an agent needs to decode and simulate a transaction — before signing it.

Open interactive test console

Offering

Provider
agentstoolshub.com
Method
GET
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://agentstoolshub.com/api/v1/crypto/tx-explain
MIME type
Not provided
First seen
2026-10-16T01:51:10.599Z
Last seen
Tags
Crypto, crypto-dev

Website

Payment pricing

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

Payment option 1
0.02 USDC
Atomic price: 20000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "20000",
    "payTo": "0x8a0F2b0a6C82D1c54B16E2e4DEcd18fF0802b0f6"
  }
]

Observed health

Status
Degraded
Latest latency
22 ms
Average latency
38 ms
HTTP status
503
Last checked
Reachability
100% over 14 checks

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

Input schema

{
  "method": "GET",
  "queryParams": {
    "chain": "base",
    "data": "0xa9059cbb000000000000000000000000d8dA6BF26964aF9D7eEd9e03E53415D37aA960450000000000000000000000000000000000000000000000000000000000002710",
    "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913"
  },
  "type": "http"
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "chain": {
              "description": "Chain",
              "enum": [
                "base",
                "ethereum"
              ],
              "type": "string"
            },
            "data": {
              "description": "Calldata (0x hex)",
              "type": "string"
            },
            "to": {
              "description": "To address",
              "type": "string"
            },
            "value": {
              "description": "Value (wei, optional)",
              "type": "string"
            }
          },
          "required": [
            "to",
            "data"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}