Base contract call

$0.01 per call · failed calls are never charged · no account or API key needed

Read-only contract call on Base (eth_call): send ABI-encoded calldata to a contract at the latest block and get the raw return data, without a transaction or gas. Use to read any view function that has no dedicated tool (the example reads USDC totalSupply, selector 0x18160ddd); decode the result with the function's ABI. Calldata up to 8 KB; a call that reverts is 422 with the reason, uncharged.

Run it free (25 free calls) Buy credits by card (from $5) Example result (JSON)

Inputs

Name	Type	Description
`to` (required)	string	0x contract address to call
`data` (required)	string	0x ABI-encoded calldata: 4-byte selector plus arguments
`from`	string	Optional 0x sender address for calls that check msg.sender

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://agent-data-tools.revmesh2074.workers.dev/base/call?to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&data=0x18160ddd"

Or one of your 25 free calls, no key:

curl "https://agent-data-tools.revmesh2074.workers.dev/base/call?to=0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913&data=0x18160ddd&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "chain": "Base",
  "chainId": 8453,
  "to": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
  "data": "0x18160ddd",
  "result": "0x00000000000000000000000000000000000000000000000000038d7ea4c68000",
  "resultBytes": 32,
  "block": 123456789
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is base_call, and the first 25 successful calls are free:

https://agent-data-tools.revmesh2074.workers.dev/mcp

Base contract call

Try it with your own inputs

Inputs

Request

Example result

From an AI agent (MCP)

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