qiskit-pauli 0.1.0

Qiskit provider for the Pauli quantum compute gateway (pauli.xyz)

qiskit-pauli

Qiskit provider for Pauli, the API gateway for quantum compute. Every device in Pauli's live registry is a BackendV2; one key reaches the whole fleet.

pip install qiskit-pauli

from qiskit import QuantumCircuit
from qiskit_pauli import PauliProvider

backend = PauliProvider().least_busy()   # PAULI_API_KEY from the environment
qc = QuantumCircuit(2, 2)
qc.h(0); qc.cx(0, 1); qc.measure([0, 1], [0, 1])
counts = backend.run(qc, shots=1000).result().get_counts()

• No pass managers required. Pauli transpiles per device server-side; transpile(qc, backend) against the backend's Target works but is optional. The Target is built best-effort from the live registry row (native gates, coupling map) — the server's transpilation is authoritative.
• Counts arrive in Qiskit's convention. Pauli serves one canonical bit ordering (cbit0_left) on every device; this provider flips keys at the boundary (per register, registers space-separated in reverse declaration order), verified against the gateway's own endianness canaries.
• Runs are pinned. backend.run targets exactly this device with fallback disabled — the device you chose is the device that runs. Policy routing (cheapest / fastest / highest_fidelity / balanced), fleet-wide estimates, and dry runs live in the core SDK: provider.client is a full pauli-sdk client.
• Money stays exact and typed. backend.run(..., max_spend_usd="1.50") takes strings or Decimal (float raises); an underfunded wallet raises pauli_sdk.InsufficientCreditsError carrying the machine-actionable payment challenge. Each member of job.sdk_jobs has the routing decision and the exact quote from the 202, and the results' billing block after completion.
• List runs submit one Pauli job per circuit under a composite handle; result() returns one Result with an experiment per circuit.

Get a key at pauli.xyz; docs at pauli.xyz/docs. This package deliberately pins only qiskit>=1.0,<3 and rides on pauli-sdk for everything below the Qiskit surface.