---
title: Qiskit addon utilities API documentation (latest version)
description: Index of all the modules in the latest version of qiskit-addon-utils.
source: https://eu-de.quantum.cloud.ibm.com/docs/en/api/qiskit-addon-utils
---

# `qiskit-addon-utils` API reference

This package contains functionality which is meant to supplement workflows involving one or more Qiskit addons. For example, this package contains functions for creating Hamiltonians, generating Trotter time evolution circuits, and slicing and combining quantum circuits in time-wise partitions.

- [coloring (`qiskit_addon_utils.coloring`)](/docs/api/qiskit-addon-utils/coloring)
- [noise\_management (`qiskit_addon_utils.noise_management`)](/docs/api/qiskit-addon-utils/noise-management)
- [bit\_flip\_checks (`qiskit_addon_utils.noise_management.bit_flip_checks`)](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks)
- [bit\_flip\_checks\_passes (`qiskit_addon_utils.noise_management.bit_flip_checks.passes`)](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks-passes)
- [post\_selection\_transpiler\_passes (`qiskit_addon_utils.noise_management.post_selection.transpiler.passes`)](/docs/api/qiskit-addon-utils/noise-management-post-selection-transpiler-passes)
- [problem\_generators (`qiskit_addon_utils.problem_generators`)](/docs/api/qiskit-addon-utils/problem-generators)
- [slicing (`qiskit_addon_utils.slicing`)](/docs/api/qiskit-addon-utils/slicing)
- [slicing\_transpiler\_passes (`qiskit_addon_utils.slicing.transpiler.passes`)](/docs/api/qiskit-addon-utils/slicing-transpiler-passes)
- [exp\_vals (`qiskit_addon_utils.exp_vals`)](/docs/api/qiskit-addon-utils/exp-vals)


## Contents

- [API index](/docs/api/qiskit-addon-utils)
- [Release notes](/docs/api/qiskit-addon-utils/release-notes)
- [qiskit_addon_utils.coloring](/docs/api/qiskit-addon-utils/coloring)
- [qiskit_addon_utils.exp_vals](/docs/api/qiskit-addon-utils/exp-vals)
- [qiskit_addon_utils.noise_management](/docs/api/qiskit-addon-utils/noise-management)
- [qiskit_addon_utils.noise_management.bit_flip_checks](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks)
- qiskit_addon_utils.noise_management.bit_flip_checks.passes
  - [Module overview](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks-passes)
  - [AddPostCircuitBitFlipChecks](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks-passes-add-post-circuit-bit-flip-checks)
  - [AddPreCircuitBitFlipChecks](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks-passes-add-pre-circuit-bit-flip-checks)
  - [AddSpectatorPostCircuitBitFlipChecks](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks-passes-add-spectator-post-circuit-bit-flip-checks)
  - [AddSpectatorPreCircuitBitFlipChecks](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks-passes-add-spectator-pre-circuit-bit-flip-checks)
  - [XPulseType](/docs/api/qiskit-addon-utils/noise-management-bit-flip-checks-passes-x-pulse-type)
- qiskit_addon_utils.noise_management.post_selection.transpiler.passes
  - [Module overview](/docs/api/qiskit-addon-utils/noise-management-post-selection-transpiler-passes)
  - [AddPostSelectionMeasures](/docs/api/qiskit-addon-utils/noise-management-post-selection-transpiler-passes-add-post-selection-measures)
  - [AddSpectatorMeasures](/docs/api/qiskit-addon-utils/noise-management-post-selection-transpiler-passes-add-spectator-measures)
  - [XSlowGate](/docs/api/qiskit-addon-utils/noise-management-post-selection-transpiler-passes-x-slow-gate)
- [qiskit_addon_utils.problem_generators](/docs/api/qiskit-addon-utils/problem-generators)
- [qiskit_addon_utils.slicing](/docs/api/qiskit-addon-utils/slicing)
- qiskit_addon_utils.slicing.transpiler.passes
  - [Module overview](/docs/api/qiskit-addon-utils/slicing-transpiler-passes)
  - [CollectOpColor](/docs/api/qiskit-addon-utils/slicing-transpiler-passes-collect-op-color)
  - [CollectOpSize](/docs/api/qiskit-addon-utils/slicing-transpiler-passes-collect-op-size)
  - [CollectOpType](/docs/api/qiskit-addon-utils/slicing-transpiler-passes-collect-op-type)