Calldata decode

Decode calldata against a JSON ABI you supply. Each decoded parameter comes back as exact JSON text in paramsJSON.

POSThttps://triport.io/v1/intelligence/decode

Network: Chainless: one call covers every supported chain; no chain field
Scope: intelligence:read
Auth: x-token: $TRIPORT_API_KEY header (or Authorization: Bearer)
Rate limit: Business — 30 rps (intelligence, burst ×2); Enterprise — 150 rps

Request

cURLJavaScriptPython

curl -X POST "https://triport.io/v1/intelligence/decode" \
  -H "x-token: $TRIPORT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"abi":"[{\"type\":\"function\",\"name\":\"balanceOf\",\"stateMutability\":\"view\",\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"outputs\":[{\"name\":\"balance\",\"type\":\"uint256\"}]}]","callData":"0x70a0823100000000000000000000000028c6c06298d514db089934071355e5743bf21d60"}'

const res = await fetch("https://triport.io/v1/intelligence/decode", {
  method: "POST",
  headers: {
    "x-token": process.env.TRIPORT_API_KEY,
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    "abi": "[{\"type\":\"function\",\"name\":\"balanceOf\",\"stateMutability\":\"view\",\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"outputs\":[{\"name\":\"balance\",\"type\":\"uint256\"}]}]",
    "callData": "0x70a0823100000000000000000000000028c6c06298d514db089934071355e5743bf21d60"
  }),
});
const data = await res.json();
console.log(data);

import os


import requests


resp = requests.post(
    "https://triport.io/v1/intelligence/decode",
    headers={
        "x-token": os.environ["TRIPORT_API_KEY"],
        "Content-Type": "application/json",
    },
    json={
        "abi": "[{\"type\":\"function\",\"name\":\"balanceOf\",\"stateMutability\":\"view\",\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"outputs\":[{\"name\":\"balance\",\"type\":\"uint256\"}]}]",
        "callData": "0x70a0823100000000000000000000000028c6c06298d514db089934071355e5743bf21d60",
    },
)
data = resp.json()
print(data)

Response

JSON

Example

{
  "state": "ok",
  "meta": {
    "observedAt": "2026-11-06T09:22:42.064996952Z",
    "expiresAt": "2026-11-06T10:22:42.064996952Z",
    "cached": true,
    "complete": false
  },
  "data": {
    "isProxy": false,
    "proxy": {
      "contractName": "",
      "methods": [],
      "abi": ""
    },
    "implementation": {
      "contractName": "",
      "methods": [
        {
          "name": "balanceOf",
          "signature": "balanceOf(address)",
          "argumentsIn": [
            {
              "name": "account",
              "type": "address"
            }
          ],
          "argumentsOut": [
            {
              "name": "balance",
              "type": "uint256"
            }
          ],
          "constant": true
        }
      ],
      "abi": "[{\"type\":\"function\",\"name\":\"balanceOf\",\"stateMutability\":\"view\",\"inputs\":[{\"name\":\"account\",\"type\":\"address\"}],\"outputs\":[{\"name\":\"balance\",\"type\":\"uint256\"}]}]"
    },
    "proxyMatch": false,
    "unpacked": true,
    "unpackedCallData": {
      "functionName": "balanceOf",
      "signature": "balanceOf(address)",
      "paramsJSON": [
        "\"0x28c6c06298d514db089934071355e5743bf21d60\""
      ]
    }
  }
}

Decode calldata against a JSON ABI you supply. Each decoded parameter comes back as exact JSON text in paramsJSON.

Parse paramsJSON with a precision-preserving JSON parser if you need numbers. Decoding shows what a call says, not what it will do when executed.

This method takes no chain.

Every answer is an envelope with state, meta, optional data and optional error. Read state first: ok, empty, partial, stale, unsupported or unavailable (see response states). meta.cached tells you whether the answer came from cache.

Parameters

abistringrequired

JSON ABI, as a string.

callDatastringoptional

Optional calldata (0x…) to decode against the ABI.

freshbooleanoptional

Optional. true skips the cache and asks for a new lookup (GET routes: ?fresh=1).

Response

Response recorded on 2026-11-06 through https://triport.io (long lists shortened). Values change over time.

Errors

HTTP	`error.code`	When
400	`invalid_request`	Malformed address, unknown field, `null` value or invalid JSON.
401	`unauthorized`	Missing or invalid API key.
403	`scope_missing` / `tier_insufficient`	The key lacks `intelligence:read`, or the plan is below Business.
405	`method_not_allowed`	Wrong HTTP method; the `Allow` header names `POST`.
422	`unsupported`	The chain (or the contract) is not supported by this method.
429	`rate_limited`	Over the `intelligence` per-second limit; wait `Retry-After` seconds.
503	`unavailable`	The lookup could not be completed right now; retry later.
504	`timeout`	The lookup took too long; retry, or retry later with the same input.

See errors, limits and states for the full rules and the code examples.