Marketplace · API · x402

ask.singitai.app/v1/exa/answer

A cited answer to a question, grounded in web sources via Exa. Pay per call in USDC over x402 on Base and Solana, no API key; max charge quoted before signing. Owner-set spending limits: AgentAllowance enforces daily, per-purchase and expiry limits onchain on Base; SingIt's server checks the daily and per-purchase limits on Solana. Every settled answer returns a receipt; owners can Revoke on both networks, Emergency stop on Base.

Endpoint	`https://ask.singitai.app/v1/exa/answer`
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	0xC23d1Dc0f5fCe1abfFB051e06cB93f0329968B4e
method	POST
last updated	2026-11-13T18:17:44.012Z

Use it

Call it (an x402 client pays automatically)

curl -i https://ask.singitai.app/v1/exa/answer
# 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/x402-880b31ffeaadd18e

Search the whole marketplace from your agent (MCP)

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

ask.singitai.app/v1/exa/answer

Use it

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