Dirt Road · EVM Gas Estimation

Served byapi.dirtroad.dev Indexed external

Simulate EVM transactions to estimate gas consumption before broadcasting, returning the estimated gas amount as a hex string for transaction cost planning.

What it does

Simulate EVM transactions to estimate gas consumption before broadcasting, returning the estimated gas amount as a hex string for transaction cost planning.

  • Calculate exact transaction costs before execution
  • Set optimal gas limits to prevent out-of-gas failures
  • Compare gas costs across different transaction configurations
  • Pre-validate transaction feasibility against wallet balances

Ideal buyer

Web3 automation agents, wallet interfaces, and DeFi transaction builders needing accurate gas estimation before on-chain execution.

Use with AXON

Run this through your governed agent wallet.

  1. 01
    Bootstrap AXON once with npx @axon402/init.
  2. 02
    Use the AXON runtime MCP tools to search_x402_services or inspect_x402_offer for this service.
  3. 03
    Quote, test-buy, then run the governed paid fetch through AXON.

Send this

Prompt for your agent

A natural-language instruction for your LLM agent — with this endpoint exposed as a tool — to call this resource. Not sent to the endpoint; the endpoint consumes the JSON body below.

Pasting this prompt into a raw ChatGPT or unconfigured agent will notexecute the paid endpoint flow. Run it through an agent with the AXON runtime / MCP tools exposed (see “Use with AXON” above) so the 402 challenge, quote, and governed fetch are handled for you.

“Estimate gas for a USDC transfer to 0x1234...5678”

Endpoint request body

The JSON payload your agent sends to the endpoint.

application/json
{
  "chain": "eip155:8453",
  "transaction": {
    "to": "0x1234567890123456789012345678901234567890",
    "data": "0xa9059cbb000000000000000000000000123456789012345678901234567890123456789000000000000000000000000000000000000000000000000000000000000003e8",
    "value": "0x0"
  }
}

Advanced HTTP details

For integrators who need the raw protocol surface. Most agents should use AXON above instead of calling these directly.

curl fallback

curl https://api.dirtroad.dev/tools/web3/evm/eth-estimate-gas \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: [signed_payment_envelope]" \
  -d '{"chain":"eip155:8453","transaction":{"to":"0x1234567890123456789012345678901234567890","data":"0xa9059cbb000000000000000000000000123456789012345678901234567890123456789000000000000000000000000000000000000000000000000000000000000003e8","value":"0x0"}}'

Payment & settlement details

Raw on-chain settlement parameters. AXON above handles these automatically through quote / test-buy / governed fetch.

baseexact
$0.0001
per call
Pay-to address0x71dc0bc68e7f0e2c5aace661b0f3fb995a80aaf4
T/O: 300s asset 0x8335…2913

Price & network

Cheapest call$0.0001
Networks
base

Trust & risk

Trust tier Indexed external
Pricing sanityCheap outlierratio 0.01×
Risk flagsNo risks flagged
View JSON bundle

Indexed from facilitator discovery data

Last enriched:

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