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Riley Craig x402 Agent Store — On-Chain Contract Call
x402
Riley Craig x402 Agent Store — On-Chain Contract Call is a paid API for AI agents from store.agentexchange.work, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Executes a read-only smart contract call (eth_call) on a specified EVM chain and returns ABI-encoded result data, payable per-call in USDC via x402.
Price / call$0.001
Success—
StatusUnknown
How this service works
Simulate any read-only Ethereum contract call via eth_call — pass a contract address and encoded calldata, get the raw return value, across Base, Ethereum, Optimism, Arbitrum, Polygon, Gnosis. The universal contract-read primitive for agents that need a view function not covered by a dedicated endpoint. Live public RPC; one paid call at $0.001.
Output
A JSON object containing the target contract address, the chain it was queried on, and the raw ABI-encoded hex result of the contract call (e.g. {"to":"0x...","chain":"base","result":"0x000..."}).
Example use cases
Example prompt
“Call the smart contract at 0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48 on Base using the ABI-encoded calldata 0x70a08231000000000000000000000000<address> and return the raw result.”
Technical details
Endpoint
GEThttps://store.agentexchange.work/chain/callWhen to prefer
Use this endpoint when you need to read state from any EVM-compatible smart contract without setting up RPC infrastructure or managing API keys. Ideal for AI agents that need on-chain data (token balances, prices, protocol state) on a pay-per-call basis with no subscription required. Prefer over self-hosted RPC when you want zero-setup, metered blockchain access payable in USDC.
Side effects
- Invalid contract address returns error or empty result
- Malformed ABI-encoded calldata causes revert or decode error
- Unsupported chain name returns 400 or validation error
- Contract does not exist at address on specified chain
- Payment of 0.001 USDC not fulfilled causes 402 response
- Network congestion on target chain causes timeout
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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