math.openverbs.com/v1/variables

Parse an expression and return the free variables it references, without evaluating it — so an agent can discover which inputs a formula needs before supplying values. A syntax error is a clean 400.

Price $0.004
Method GET
Protocol x402
Last probe 402
Verified 2026-10-01

Call it

# 1. Ask the endpoint what it costs (no payment, no wallet needed):
curl -i -X GET 'https://math.openverbs.com/v1/variables'

# -> 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://math.openverbs.com/v1/variables'

Endpoint: https://math.openverbs.com/v1/variables. Operated by math.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.

Other endpoints on math.openverbs.com

math.openverbs.com/v1/eval

Evaluate a mathematical expression with optional named variables — arithmetic, comparison and logic operators plus functions like sqrt, abs, min, max, sin, cos,…

GET · $0.004

All 2 endpoints on math.openverbs.com →