Chain Storage API

Read any raw contract storage slot via eth_getStorageAt — the low-level read auditing, proxy-resolution and advanced trading agents make to inspect contract state directly.

Overview

Read any raw contract storage slot via eth_getStorageAt — the low-level read auditing, proxy-resolution and advanced trading agents make to inspect contract state directly. Pass address + slot. Across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. Free public RPC; 6 chains vs onesource's Ethereum-only coverage.

Endpoint

Method	Endpoint	Price	Description
GET	/v1/marketplace/api/chain-storage-2599	$0.1035	Invoke Chain Storage (Storage) 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 https://jarvisclaw.ai/v1/marketplace/api/chain-storage-2599

# 2. Pay it (the SDK signs and retries for you)
curl -H "X-PAYMENT: <signed-payload>" https://jarvisclaw.ai/v1/marketplace/api/chain-storage-2599

Open in the marketplace