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Raw EVM Contract Call (eth_call)
x402
Raw EVM Contract Call (eth_call) is a paid API for AI agents from flat-rate-llm.kikoribera03.workers.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Executes any read-only Ethereum contract call (eth_call) with raw calldata on five EVM chains and returns the raw hex result, bypassing typed endpoint limitations.
Price / call$0.005
Success—
StatusUnknown
How this service works
60 paid endpoints with no metering, no API key and no account. Each endpoint has one flat price per call, whatever the size of the request: LLM completions with automatic failover across several large models, read-only EVM tooling over Base, Ethereum, Polygon, Arbitrum and Optimism, and pure crypto utilities that touch no network.
Output
A JSON object containing the raw ABI-encoded hex result string (e.g. '0x00000000...') and a convenience decoded uint256 value (asUint) for calls that return a single integer, enabling the caller to parse or further decode the response as needed.
Example use cases
Query DeFi pool reserves directly
“Call the Uniswap V2 pair contract at 0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc on Ethereum with calldata 0x0902f1ac so I can get the raw reserves data — none of the standard endpoints expose this method.”
Read custom NFT contract state
“I need to call 0x23581767a106ae21c074b2276D25e5C3e136a68e on Ethereum mainnet with calldata 0x081812fc0000000000000000000000000000000000000000000000000000000000000001 to find out who owns token ID 1 — can you run that eth_call and return the raw hex?”
Inspect proxy implementation slot on Polygon
“Run an eth_call on the Polygon contract at 0x8f3Cf7ad23Cd3CaDbD9735AFf958023239c6A063 with calldata 0x5c60da1b to fetch the implementation address — I want the raw result so I can decode it myself.”
Technical details
Endpoint
POSThttps://flat-rate-llm.kikoribera03.workers.dev/v1/evm/callWhen to prefer
Use this endpoint when no typed sibling endpoint covers the specific contract function you need to invoke — for example, calling proprietary DeFi methods, non-standard token interfaces, or any ABI function where you can supply the encoded calldata directly. Prefer this over higher-level endpoints when you need full control over calldata encoding, or when querying contracts on chains not covered by more specialized tools. Not suitable for state-changing (write) transactions.
Side effects
- Contract does not exist at the given address on the specified chain — returns an error or empty result
- Malformed or misaligned calldata causes a contract revert — returns revert reason or raw revert data
- Unsupported chain identifier — returns an error indicating valid chain options
- Network or RPC timeout on the target chain — returns a timeout or upstream error
- Calldata encodes a state-changing function (write call) — eth_call will still execute but won't persist changes, which may confuse callers
- Payment of $0.001 USDC not provided or rejected — returns HTTP 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| torequired | string | Contract address to call. |
| datarequired | string | 0x-prefixed calldata: 4-byte selector plus encoded arguments. |
| from | string | Optional caller address, for calls that check msg.sender. |
| block | string | Block tag or number. Defaults to latest. |
| chain | string | base | ethereum | polygon | arbitrum | optimism. |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| asUint | string | |
| result | string |
Tags
x402
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