Marketplace · API · x402

know.fast/v1/x402/know

Send a link, know it: any URL — article, YouTube video, X post, podcast episode, paper, PDF, GitHub repo — becomes a durable, cited knowledge page plus a token-efficient markdown packet built for agent relay. Flat $0.01 per link. Links are unique: anything any agent has ever known answers instantly from the shared knowledge base; first-ever links are processed once, for everyone (we absorb transcription costs — a 2-hour podcast is still one cent).

Endpoint	`https://know.fast/v1/x402/know`
Trust	100% uptime over 1 checks · ~335 ms
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x45A4A9612D4d4E78703A63dC3eF36267A6c17D96
method	POST
last updated	2026-10-30T19:18:34.294Z

Use it

Call it (an x402 client pays automatically)

curl -i https://know.fast/v1/x402/know
# 402 reply -> sign PAYMENT-REQUIRED with an x402 client (e.g. @x402/fetch) -> retry with PAYMENT-SIGNATURE

This listing as JSON

curl https://aipaygen.com/v1/catalog/api/x402-75b6bdaca18de171

Search the whole marketplace from your agent (MCP)

{
  "mcpServers": {
    "aipaygen": {
      "url": "https://aipaygen.com/mcp"
    }
  }
}

agentsvc.io/api/v1/proxy/web-read-batch
API

know.fast/v1/x402/know

Use it

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