Example inputPOST /api/v1/x402/gas-cost-wei
{
"gas_used": 21000,
"gas_price_wei": "1000000000"
}Portable intent card · chain-primitives-local
Gas Cost in Wei API for agents
Compute gas_used × gas_price as total gas cost in wei. Call when estimating tx cost from known used gas and price without a node. Returns gas cost wei string 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-wei -m POST -H 'x-delx-source: intent-card-gas-cost-wei-api' --max-amount 0.001 -b '{"gas_used":21000,"gas_price_wei":"1000000000"}'Agent discoverydelx/intent-card/v1
{
"intent": "Gas Cost in Wei for an agent workflow",
"tool_name": "util_gas_cost_wei",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/gas-cost-wei-api.json"
}Portable and inspectable