Api Endpoint

TxSim Decoder

Decode raw EVM calldata into a named function, signature and arguments, plus security risk flags (unlimited token approval, setApprovalForAll, ownership transfer, unknown selector, native value transfer). Keyless, deterministic, no simulation - the cheap way for an agent to understand and risk-screen a piece of calldata before signing.

Open interactive test console

Offering

Provider: simulate.cyberwarex.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://simulate.cyberwarex.com/decode
MIME type: application/json
First seen: 2026-10-16T01:50:06.715Z
Last seen: 2026-11-05T17:17:40.595Z
Tags: calldata, abi-decode, Security, approval, EVM

Website

Payment pricing

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

Payment option 1: 0.002 USDC
Atomic price: 2000 · Network: eip155:8453 · Asset: USDC · Scheme: exact

Raw x402 terms

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "2000",
    "payTo": "0x058D0Cc5CC97e61e8A9f38D6d6365bce525921B2"
  }
]

Observed health

Status: Healthy
Latest latency: 406 ms
Average latency: 928 ms
HTTP status: 402
Last checked: 2026-11-05T07:08:57.170Z
Reachability: 93.3% over 15 checks

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

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "GET",
        "HEAD",
        "DELETE"
      ]
    },
    "queryParams": {
      "type": "object",
      "properties": {
        "data": {
          "type": "string",
          "pattern": "^0x[a-fA-F0-9]*$",
          "description": "Transaction calldata (hex, 4-byte selector + ABI args)."
        },
        "to": {
          "type": "string",
          "pattern": "^0x[a-fA-F0-9]{40}$",
          "description": "Target address (optional, for context only)."
        }
      },
      "required": [
        "data"
      ],
      "additionalProperties": false
    }
  },
  "required": [
    "type",
    "method"
  ],
  "additionalProperties": false
}

Output schema

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET",
            "HEAD",
            "DELETE"
          ],
          "type": "string"
        },
        "queryParams": {
          "additionalProperties": false,
          "properties": {
            "data": {
              "description": "Transaction calldata (hex, 4-byte selector + ABI args).",
              "pattern": "^0x[a-fA-F0-9]*$",
              "type": "string"
            },
            "to": {
              "description": "Target address (optional, for context only).",
              "pattern": "^0x[a-fA-F0-9]{40}$",
              "type": "string"
            }
          },
          "required": [
            "data"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "decoded": {
              "description": "function, signature, args.",
              "type": "object"
            },
            "disclaimer": {
              "type": "string"
            },
            "risk": {
              "description": "level (none|caution|danger) + flags.",
              "type": "object"
            }
          },
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}