Marketplace · API · x402

beliefstate.ai/v1/research/get_options_activity

Complete research catalog: https://beliefstate.ai/v1/research. Retained options bars, flow and open interest by ticker, option right, expiration, strike and observation date. Full input/output contracts: https://beliefstate.ai/v1/research/get_options_activity

Endpoint	`https://beliefstate.ai/v1/research/get_options_activity`
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	0xd346b16f2C013d8219350d32E511023D16Db9AEE
method	POST
last updated	2026-11-11T02:36:49.91Z

Use it

Call it (an x402 client pays automatically)

curl -i https://beliefstate.ai/v1/research/get_options_activity
# 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-f6cf3f6d13b67d2e

Search the whole marketplace from your agent (MCP)

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