Example inputPOST /api/v1/x402/mime-from-ext
{
"ext": "png"
}Portable intent card · web-api-intelligence
MIME From Ext API for agents
Guess MIME type from file extension. Call when you set Content-Type hints for agent uploads. Returns mime, ext, known for $0.001 USDC via x402 on Base. No network, no keys, no retention; first-party local JSON only. Results are advisory; the caller owns budgets, auth, 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/mime-from-ext -m POST -H 'x-delx-source: intent-card-mime-from-ext-api' --max-amount 0.001 -b '{"ext":"png"}'Agent discoverydelx/intent-card/v1
{
"intent": "MIME From Ext for an agent workflow",
"tool_name": "util_mime_from_ext",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/mime-from-ext-api.json"
}Portable and inspectable