Marketplace · API · x402

api.annalist.dev/v1/crowd/perp

Use before acting on a Hyperliquid perpetual to see whether it is crowded or in a hype state and what historically followed. Returns 7-day move, funding (hourly, APR, percentile vs its own 90 days and vs all perps), open interest and its 24h/7d change, premium, Wikipedia attention, active crowd states, and each state's base rates (sample size, median and spread of 7/30/90-day returns). Signed. Not investment advice.

Endpoint	`https://api.annalist.dev/v1/crowd/perp`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~353 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	0xDE4805678438b6bfBbFE047fFF305C928653Fe17
method	GET
last updated	2026-11-09T12:01:05.371Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.annalist.dev/v1/crowd/perp
# 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/x402-7f735a8d0e777a65

Search the whole marketplace from your agent (MCP)

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

api.annalist.dev/v1/crowd/perp

Use it

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