Marketplace · API · x402

api.annalist.dev/v1/crowd/history

Signed historical crowd-state events for backtesting: up to 30 days per call, optionally filtered by coin and state. The archive is append-only and its daily hashes are published and Bitcoin-timestamped.

Endpoint	`https://api.annalist.dev/v1/crowd/history`
Trust	✓ Verified callable · 100% uptime over 1 checks · ~354 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	2026-11-09T12:01:09.161Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.annalist.dev/v1/crowd/history
# 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/x402-7f5864334e58ceb8

Search the whole marketplace from your agent (MCP)

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