Portable intent card · chain-primitives-local
Base USDC Payment Match: Base USDC Payment Match checks recipient, raw amount, and chain id for a Base USDC payment intent from bounded caller-supplied values without an external provider. Call Base USDC Payment Match before signing, submitting, replacing, or accepting an EVM/Base transaction assembled from caller-owned data. Returns normalized transaction evidence, calculated budget or shape findings, and a fail-closed preflight status for Base USDC Payment Match as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, stateless, memory-only execution with no paid upstream, live RPC, web search, credentials, custody, signing, media generator, or input retention. Honest limit: Uses caller-supplied values only; it performs no RPC call, signing, broadcasting, balance lookup, custody, trading, or live-chain claim. Advisory output only; the buyer owns authorization, payment policy, and production decisions.
Intent to transaction
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/base-usdc-payment-match -m POST -H 'x-delx-source: intent-card-base-usdc-payment-match-api' --max-amount 0.001 -b '{"recipient":"0x1111111111111111111111111111111111111111","expected_recipient":"0x1111111111111111111111111111111111111111","amount_raw":"1000","expected_amount_raw":"1000","chain_id":8453}'{
"recipient": "0x1111111111111111111111111111111111111111",
"expected_recipient": "0x1111111111111111111111111111111111111111",
"amount_raw": "1000",
"expected_amount_raw": "1000",
"chain_id": 8453
}{
"intent": "Base USDC Payment Match for an agent workflow",
"tool_name": "util_base_usdc_payment_match",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/base-usdc-payment-match-api.json"
}Portable and inspectable