Decode Calldata

Decode raw EVM transaction calldata.

Overview

Decode raw EVM transaction calldata. POST { data } (0x-prefixed hex). Resolves the 4-byte function selector to its human signature(s) via the openchain.xyz database, then ABI-decodes the parameters (address, uint/int, bool, bytesN, string, bytes, and elementary dynamic arrays). Returns selector, candidate signatures, decoded params, and the raw 32-byte words. For agents inspecting/verifying a transaction before signing. Keyless.

Endpoint

Method	Endpoint	Price	Description
POST	/v1/marketplace/api/decode-calldata	$0.00115	Invoke Decode Calldata (Code) and return the upstream response.

How to call it

Requests are paid per call over the x402 protocol. Call the endpoint, receive a 402 Payment Required quote, then repeat the request with the signed payment header. The SDKs do both steps for you.

# 1. Ask for a quote
curl -i -X POST https://api.jarvisclaw.ai/v1/marketplace/api/decode-calldata \
  -H 'Content-Type: application/json' \
  -d '{}'

# 2. Pay it (the SDK signs and retries for you)
curl -X POST https://api.jarvisclaw.ai/v1/marketplace/api/decode-calldata \
  -H 'Content-Type: application/json' \
  -H 'X-PAYMENT: <signed-payload>' \
  -d '{}'

Open in the marketplace