---
id: mypy-boto3-signin
version: "1.43.44"
license: MIT
license_treatment: permissive
maintenance: active
---

# mypy-boto3-signin — Type annotations for boto3 SignInService 1.43.44 service generated with mypy-boto3-builder 8.12.0

License: permissive · Maintenance: active · Downloads: 232.8K/mo

## What it is and what it does

This package is a type-stub library that adds static type information to boto3's SignInService client. It is generated from boto3 1.43.44 using mypy-boto3-builder 8.12.0 and works with VSCode, PyCharm, Emacs, Sublime Text, mypy, pyright, and other type-aware tools. When installed, it enables IDE code completion and type checking without requiring explicit type annotations in your code—you write boto3 code normally and the stubs provide the type information behind the scenes.

The package is designed to be lightweight and optional for production use. It depends only on typing-extensions and can be installed via pip directly or as part of boto3-stubs[signin]. The documentation notes that PyCharm may experience performance issues with the full type annotations due to Literal overload complexity, and recommends using boto3-stubs-lite as an alternative in that case.

Use it for:

- Enable IDE autocomplete and type hints when writing boto3 SignInService client code in VSCode or other editors.
- Run mypy or pyright type checking on boto3 code to catch type errors before runtime.
- Provide explicit type annotations for SignInServiceClient, paginators, and service resources in type-strict projects.
- Integrate with LSP-based editors (Emacs, Sublime Text) for real-time type checking and completion.
- Use in TYPE_CHECKING blocks to add type hints without adding a runtime dependency to production code.

## Worth the install?

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

Provides type annotations and IDE autocompletion support for boto3's SignInService client, enabling static type checking with mypy, pyright, and other tools.

Yes, if you use boto3's SignInService and want static type checking or IDE autocompletion. Install friction is minimal, maintenance is active, no vulnerabilities are known, and the MIT license poses no restrictions. Consider boto3-stubs-lite instead if you experience performance issues in PyCharm.

## Install

pip install mypy-boto3-signin
uv add mypy-boto3-signin
poetry add mypy-boto3-signin

## Installing mypy-boto3-signin

Before you install: Low install friction with a single lightweight runtime dependency (typing-extensions). Actively maintained with recent releases; last commit 2026-06-22 and no known vulnerabilities.

License in practice: MIT license permits unrestricted use, modification, and distribution with minimal restrictions—suitable for both open-source and proprietary projects.

Quickstart:

pip install mypy-boto3-signin

from boto3.session import Session
from mypy_boto3_signin import SignInServiceClient

client: SignInServiceClient = Session().client("signin")

Requires Python 3.9 or later; boto3 must be installed separately in your environment.

Verify before relying:

- Whether type coverage is complete for all SignInService operations and parameters.
- Performance impact when used with PyCharm (docs mention potential slowness with Literal overloads).

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 232.8K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

boto3 type stubs signin, aws signin type annotations, boto3 mypy stubs, type checking boto3 client, boto3 ide autocomplete, python aws type hints, boto3-stubs signin service, type-stubs, aws-sdk, static-typing

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