Example inputPOST /api/v1/x402/caip2-build
{
"namespace": "eip155",
"reference": "8453"
}Portable intent card · chain-primitives-local
CAIP-2 Build API for agents
Build CAIP-2 chain identifiers from namespace and reference. Call when emitting standard chain IDs for multi-chain agent tooling. Returns caip2 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/caip2-build -m POST -H 'x-delx-source: intent-card-caip2-build-api' --max-amount 0.001 -b '{"namespace":"eip155","reference":"8453"}'Agent discoverydelx/intent-card/v1
{
"intent": "CAIP-2 Build for an agent workflow",
"tool_name": "util_caip2_build",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/caip2-build-api.json"
}Portable and inspectable