---
id: mypy-boto3-lex-runtime
version: "1.43.0"
license: MIT
license_treatment: permissive
maintenance: active
---

# mypy-boto3-lex-runtime — Type annotations for boto3 LexRuntimeService 1.43.0 service generated with mypy-boto3-builder 8.12.0

License: permissive · Maintenance: active · Downloads: 252.3K/mo

## What it is and what it does

This package is a type stub library that adds comprehensive type annotations to boto3's LexRuntimeService client. It is generated automatically from boto3's service definitions using mypy-boto3-builder 8.12.0 and works with mypy, pyright, VSCode, PyCharm, Emacs, and Sublime Text.

When installed, it enables your IDE to provide accurate autocomplete for LexRuntimeService API calls and allows static type checkers to catch type errors before runtime. The package includes type definitions for client methods, response shapes, and service literals. It is designed as a development-only dependency and can be safely gated behind TYPE_CHECKING to avoid production overhead.

Use it for:

- Enable IDE autocomplete and type hints when developing boto3 code that calls AWS Lex Runtime APIs.
- Catch type mismatches in LexRuntimeService client calls during static analysis with mypy or pyright.
- Provide explicit type annotations for LexRuntimeService response objects in your codebase.
- Improve code quality and maintainability by documenting expected parameter and return types for Lex operations.
- Use with VSCode and Pylance for real-time type checking and code completion without manual annotations.

## Worth the install?

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

Provides type annotations for boto3's LexRuntimeService client, enabling IDE autocomplete and static type checking with mypy and pyright.

Yes. This is a low-friction, actively maintained type stub for a specific AWS service with no known vulnerabilities and a permissive license. Install it if you use boto3's LexRuntimeService and want IDE autocomplete and static type checking; it adds minimal overhead and can be confined to development dependencies.

## Install

pip install mypy-boto3-lex-runtime
uv add mypy-boto3-lex-runtime
poetry add mypy-boto3-lex-runtime

## Installing mypy-boto3-lex-runtime

Before you install: Low install friction with a single runtime dependency (typing-extensions). Actively maintained with recent commits and stable release status.

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

Quickstart:

pip install mypy-boto3-lex-runtime

from boto3.session import Session
from mypy_boto3_lex_runtime import LexRuntimeServiceClient

client: LexRuntimeServiceClient = Session().client("lex-runtime")

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

Verify before relying:

- Whether performance issues mentioned for PyCharm (issue PY-40997) have been resolved in recent PyCharm versions.
- Exact scope of type coverage for all LexRuntimeService operations and response shapes.

## Package facts

- License: MIT (permissive)
- Python support: supports_current
- Install friction: low
- Maintenance: active
- Downloads: 252.3K/month (top 15,000 on PyPI)
- Known vulnerabilities: none known

## Tags

boto3 type stubs, aws lex runtime types, boto3 type annotations, mypy boto3 stubs, lex-runtime type hints, boto3 ide autocomplete, static type checking aws, type-stubs, aws-sdk, boto3

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