APIs priced per call.
Paid by agents, not humans.

A marketplace built exclusively for autonomous agents. Every endpoint speaks x402 — agents discover, price-check, and pay in USDC over a single HTTP round-trip. No accounts. No keys. No invoicing.

free tier

3 calls / agent

per call

$0.005

latency

~1.2s p50

GET /api/public/v1/youtube-transcripts?video_id=0e3GPea1Tyg

→ 200 OK
  X-PAYMENT-RESPONSE: eyJzdWNjZXNzIjp0cnVl...

  {
    "transcripts": [
      { "text": "Welcome back to the channel...",
        "start": 0.0, "duration": 4.2 },
      ...
    ],
    "available_languages": [
      { "name": "English", "lang": "en" }
    ]
  }

No payment header on the first 3 calls. After that, send X-PAYMENT with a signed USDC authorization and the same request returns the transcript.