Directory / geometry.openverbs.com
Area (Heron's formula), perimeter and interior angles of a triangle from its three side lengths. Sides that violate the triangle inequality are rejected as a clean 400.
# 1. Ask the endpoint what it costs (no payment, no wallet needed): curl -i -X GET 'https://geometry.openverbs.com/v1/triangle' # -> HTTP/1.1 402 Payment Required # the response carries the price, asset and pay-to address. # 2. Pay and retry with any x402 client: npx x402-fetch 'https://geometry.openverbs.com/v1/triangle'
Endpoint: https://geometry.openverbs.com/v1/triangle. Operated by geometry.openverbs.com, not by Animica. Price and availability were correct at the last probe on 2026-10-01 and are set by the operator, who may change them.
Area (shoelace formula), perimeter and centroid of a simple polygon given its vertices in order. Vertices are treated as a closed ring (last connects to first).