---
id: archinfo
version: "9.3.2"
license: BSD-2-Clause
license_treatment: permissive
maintenance: active
---

# archinfo — Classes with architecture-specific information useful to other projects.

License: permissive · Maintenance: active · Downloads: 916.9K/mo

## What it is and what it does

archinfo is a library that encapsulates architecture-specific information into reusable classes. It was designed to support cross-architecture tools by providing a consistent, programmatic interface to CPU architecture details—instruction set properties, register layouts, calling conventions, and other platform-specific metadata. Rather than hardcoding architecture details throughout a tool, developers can query archinfo for the information they need.

The package has no runtime dependencies and is lightweight, making it suitable for embedding in larger analysis or reverse-engineering frameworks. It supports modern Python versions (3.12+) and has been actively maintained since its initial release in 2015.

Use it for:

- Query CPU architecture properties in binary analysis or emulation tools that need to adapt behavior per target platform.
- Build cross-platform reverse-engineering frameworks that require programmatic access to architecture-specific metadata.
- Retrieve calling convention and ABI details for a given processor architecture in static analysis.
- Integrate architecture metadata into dynamic analysis or symbolic execution engines.
- Support architecture-agnostic tool development by centralizing platform-specific information.

## Worth the install?

AI-flagged interpretation of the facts above — verify before relying.

Provides architecture-specific metadata and information classes for cross-architecture tools, enabling programmatic access to CPU, instruction set, and platform details.

Yes. archinfo is a lightweight, actively maintained library with zero dependencies, permissive licensing, and no known vulnerabilities. Install it if you are building or using cross-architecture tools that need programmatic access to architecture-specific metadata. It is not a general-purpose utility; install only if your project actually needs this information.

## Install

pip install archinfo
uv add archinfo
poetry add archinfo

## Installing archinfo

Before you install: Low install friction with no runtime dependencies. Active maintenance: last commit 2026-08-14, released 2026-08-05. Requires Python 3.12 or later.

License in practice: BSD-2-Clause is permissive; you may use, modify, and distribute this package with minimal restrictions, provided you retain the license notice.

Quickstart:

pip install archinfo

import archinfo
arch = archinfo.arch_from_id('arm')
print(arch.bits, arch.name)

Requires Python 3.12 or later.

Verify before relying:

- What specific architecture types and metadata fields are available in the API.
- Whether archinfo is actively used by pyvex and other cross-architecture tools as described.
- What calling convention, ABI, and register layout details the package exposes.

## Package facts

- License: BSD-2-Clause (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 916.9K/month (top 5,000 on PyPI)
- Known vulnerabilities: none known

## Tags

architecture metadata, cpu instruction set info, cross-platform architecture details, processor architecture classes, binary analysis architecture support, binary-analysis, architecture-metadata

[View on SkillFed](https://skillfed.io/packages/archinfo) · [View on PyPI](https://pypi.org/project/archinfo/)