Example inputPOST /api/v1/x402/gas-cost-usd
{
"gas_used": 21000,
"gas_price_wei": "1000000000",
"eth_usd": 3000
}Portable intent card · chain-primitives-local
Gas Cost in USD API for agents
Estimate gas cost in USD given used gas, price, and ETH/USD. Call when operator reports that need approximate dollar gas spend. Returns usd cost estimate (caller supplies eth price) as deterministic JSON for $0.001 USDC via x402 on Base. First-party local math only—no RPC, live market feed, API keys, storage, or mediagen. Advisory only; the caller owns capital, risk, and production controls.
Intent to transaction
One command, attributed.
The source header follows this discovery route through challenge, payment and delivery without exposing the buyer or request body.
npx agentcash@latest fetch https://api.delx.ai/api/v1/x402/gas-cost-usd -m POST -H 'x-delx-source: intent-card-gas-cost-usd-api' --max-amount 0.001 -b '{"gas_used":21000,"gas_price_wei":"1000000000","eth_usd":3000}'Agent discoverydelx/intent-card/v1
{
"intent": "Gas Cost in USD for an agent workflow",
"tool_name": "util_gas_cost_usd",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/gas-cost-usd-api.json"
}Portable and inspectable