Marketplace · API · x402

api.firstmention.uk/s/api-change-check/compare

Surface-change report between two OpenAPI 3 specs: which paths/methods/parameters/response codes were added or removed. Informational only, not a full compatibility audit.

Endpoint	`https://api.firstmention.uk/s/api-change-check/compare`
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	0xddbeE715fEB5232aF1f2B0f07392aAA0c712E572
method	POST
last updated	2026-11-09T12:01:30.328Z

Use it

Call it (an x402 client pays automatically)

curl -i https://api.firstmention.uk/s/api-change-check/compare
# 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/x402-39b539494092f6bd

Search the whole marketplace from your agent (MCP)

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