Example inputPOST /api/v1/x402/pdf-header-sniff
{
"base64_prefix": "JVBERi0xLjQ="
}Portable intent card · agent-ops-math
PDF Header Sniff Base64 API for agents
Sniff PDF magic and approximate size from base64 prefix. Call when rejecting non-PDF uploads before heavy OCR. Returns is_pdf and decoded_prefix_len 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/pdf-header-sniff -m POST -H 'x-delx-source: intent-card-pdf-header-sniff-api' --max-amount 0.001 -b '{"base64_prefix":"JVBERi0xLjQ="}'Agent discoverydelx/intent-card/v1
{
"intent": "PDF Header Sniff Base64 for an agent workflow",
"tool_name": "util_pdf_header_sniff",
"price_usdc": "0.001",
"machine_url": "https://commerce.delx.ai/intents/pdf-header-sniff-api.json"
}Portable and inspectable