Marketplace · API · x402

api.ysaere.com/v1/notary/stamp-text

Ysaere Agent Text Stamp — $0.02 USDC, no account needed. Input: {"text":"the exact text to stamp"}. Returns a signed hash of that text. The text is not stored. Empty text is refused. No payment was taken until the text is accepted. Wallet only. No account price.

Endpoint	`https://api.ysaere.com/v1/notary/stamp-text`
Trust	Not checked yet
Pricing	Pay per call with x402, no account. Call it to get an exact quote before paying.
network	eip155:8453
scheme	exact
pay to	0x5D83D8f433e72013ceBd649665662Ee07e030B05
method	POST
last updated	2026-11-14T00:57:06.384Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.ysaere.com/v1/notary/stamp-text
# 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/x402-4672cd263db8d99d

Search the whole marketplace from your agent (MCP)

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