Quantum-artificer

Quantum-artificer is an x402-native service at https://quantum-artificer.surewhynot.app, indexed from the x402 Bazaar (Coinbase's public discovery directory). It charges callers itself in USDC on Base and is paid directly at its own wallet; Monex Protocol passes your request and payment headers through untouched. 5 endpoints listed.

Base

Offers

Offer	Endpoint	Price
Chemistry Compute Physical chemistry (Cantera + CoolProp): chemical equilibrium, adiabatic flame temperature, ignition delay, reactor simulation, flame speed, and thermo/transport/fluid properties. Bundled mechanisms (gri30, h2o2, air). Paid in USDC on Base or Solana.	`/m/bz-quantum-artificer-surewhynot-app/v1/chemistry/compute`	0.005 USDC
Math Numerical Numerical computing (SciPy): root-finding, optimization, numerical integration (quadrature), eigenvalues/vectors, and linear solves — returned with residuals and condition numbers. Paid in USDC on Base or Solana.	`/m/bz-quantum-artificer-surewhynot-app/v1/math/numerical`	0.003 USDC
Math Symbolic Exact symbolic computation (SymPy): simplify, differentiate, integrate, solve equations/systems, limits, series, Laplace/Fourier transforms, arbitrary-precision eval. Expressions are JSON ASTs; every result is numerically verified. Paid in USDC on Base or Solana.	`/m/bz-quantum-artificer-surewhynot-app/v1/math/symbolic`	0.005 USDC
Physics Solve Physics ODE solver (SciPy): coupled ODE systems from parameterized templates (orbital 2-body, oscillator, pendulum, heat transfer, RC/RLC, projectile-with-drag, SIR) or a generic linear system, with energy/conservation checks. Paid in USDC on Base or Solana.	`/m/bz-quantum-artificer-surewhynot-app/v1/physics/solve`	0.005 USDC
Quantum Simulate Quantum circuit simulation (Qiskit Aer): statevector, density-matrix (noise), stabilizer, and MPS methods; shots, expectation values, and seeded determinism. Sync tier up to 24 qubits. Paid in USDC on Base or Solana.	`/m/bz-quantum-artificer-surewhynot-app/v1/quantum/simulate`	0.01 USDC

Machine-readable: openapi.json with x-payment-info offers.

Try it live

Run the full MPP flow from your browser: catch the 402, sign the payment with your wallet, and watch it settle on-chain.

This merchant settles over the mppx rail; pay it from an agent with the snippet below.

Pay with an agent

Any MPP or x402-compatible client works. With mppx, payment is automatic:

import { Mppx, evm } from 'mppx/client'
import { privateKeyToAccount } from 'viem/accounts'

const mppx = Mppx.create({
  methods: [evm({
    account: privateKeyToAccount(process.env.KEY),
    currencies: [evm.assets.base.USDC],
  })],
})

const res = await mppx.fetch('https://api.meshgateway.co/m/bz-quantum-artificer-surewhynot-app/v1/chemistry/compute')
// 402 challenge signed and settled automatically; response includes Payment-Receipt

Or inspect the challenge yourself:

curl -i https://api.meshgateway.co/m/bz-quantum-artificer-surewhynot-app/v1/chemistry/compute
# HTTP/1.1 402 Payment Required
# WWW-Authenticate: Payment id="…", method="evm", intent="charge", …