Amazon Lex website screenshot

Amazon Lex

Amazon Lex is a fully managed artificial intelligence (AI) service with advanced natural language models to design, build, test, and deploy conversational interfaces in applications. It provides the deep learning functionalities of automatic speech recognition (ASR) for converting speech to text, and natural language understanding (NLU) to recognize the intent of the text, enabling you to build applications with highly engaging user experiences and lifelike conversational interactions.

Amazon Lex publishes 1 API on the APIs.io network: Bots API.

The Amazon Lex catalog on APIs.io includes 1 JSON-LD context and 2 Spectral governance rulesets.

Amazon Lex’s developer surface includes authentication, developer portal, documentation, support, engineering blog, GitHub presence, developer console, and 19 more developer resources.

65.9/100 strong ▬ flat Agent 31/100 agent aware Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
1 APIs 6 Features 4 Use Cases

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 65.9/100 · strong
Contract Quality 18.7 / 25
Developer Ergonomics 9.1 / 20
Commercial Clarity 17.9 / 20
Operational Transparency 7.5 / 13
Governance 8.3 / 12
Discoverability 4.4 / 10
Agent readiness — 31/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/amazon-lex: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Amazon Lex Bots API

Lex bot management

Postman Collections 1

Ready-to-run Postman collections for exercising this provider's APIs.

Open Collections 2

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Amazon Lex API

OPEN COLLECTION

Amazon Lex API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Amazon Lex Rate Limits

5 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Features 6

Notable capabilities this provider offers.

Automatic Speech Recognition

Convert speech to text with high accuracy using the same deep learning technology as Amazon Alexa.

Natural Language Understanding

Understand the intent behind user input to build conversational interfaces.

Multi-Channel Deployment

Deploy bots across web, mobile, messaging channels (Slack, Facebook Messenger, Twilio), and contact centers.

Amazon Connect Integration

Build intelligent contact center bots with native integration with Amazon Connect.

Streaming Conversations

Support multi-turn streaming conversations for complex dialog flows.

Intent Recognition

Recognize user intents and extract slot values from natural language input.

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Amazon Lex Context

2 classes · 7 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Amazon Lex API Rules

4 rules · 2 warnings 2 info

SPECTRAL

Amazon Lex API Rules

24 rules · 9 errors 14 warnings 1 info

SPECTRAL

JSON Schema 2

Standalone JSON Schema definitions for this provider's data models.

Bot

7 properties

JSON SCHEMA

Intent

7 properties

JSON SCHEMA

JSON Structure 2

JSON Structure definitions describing this provider's data shapes.

Amazon Lex Bot Structure

7 properties

JSON STRUCTURE

Amazon Lex Intent Structure

7 properties

JSON STRUCTURE

Examples 2

Example request and response payloads for these APIs.

Amazon Lex Bot Example

7 fields

EXAMPLE

Amazon Lex Intent Example

7 fields

EXAMPLE

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Amazon Lex Authentication

apiKey · 1 scheme

SECURITY

Amazon Lex Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Amazon Lex Vulnerability Disclosure

security.txt · contact published

SECURITY

Amazon Lex Trust Center

PCI DSS, HIPAA, FedRAMP, GDPR, FIPS 140

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Amazon Lex Agentic Access

7 operations · 4 acting

7 operations · 4 acting

AGENTIC

Use Cases 4

What developers build with this provider.

Customer Service Chatbot

Build self-service chatbots for customer support and FAQ handling.

Contact Center Automation

Automate contact center interactions with intelligent IVR and agent assist.

Internal Help Desk

Create employee-facing bots for IT help desk and HR self-service.

E-Commerce Assistant

Build shopping assistants that understand natural language product queries.

Integrations 4

Pre-built integrations with other platforms and tools.

Amazon Connect

Deploy Lex bots in Amazon Connect contact flows for IVR and agent assist.

Amazon Kendra

Combine Lex for dialog management with Kendra for intelligent document search.

AWS Lambda

Use Lambda for fulfillment logic and business rules in bot conversations.

Amazon Polly

Convert bot text responses to natural speech using Amazon Polly TTS.

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 6

Authentication, authorization, and security posture

Learn 1

Tutorials, courses, talks, and written guidance

Operate 4

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
name: Amazon Lex
description: Amazon Lex is a fully managed artificial intelligence (AI) service with advanced natural language models to design,
  build, test, and deploy conversational interfaces in applications. It provides the deep learning functionalities of automatic
  speech recognition (ASR) for converting speech to text, and natural language understanding (NLU) to recognize the intent
  of the text, enabling you to build applications with highly engaging user experiences and lifelike conversational interactions.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://a0.awsstatic.com/libra-css/images/logos/aws_logo_smile_1200x630.png
url: https://apis.io/amazon-lex
created: '2024-01-15'
modified: '2026-05-19'
apis:
- aid: amazon-lex:amazon-lex-bots-api
  name: Amazon Lex Bots API
  description: Lex bot management
  baseURL: https://models-v2-lex.amazonaws.com
  tags:
  - Bots
  properties:
  - type: OpenAPI
    url: openapi/amazon-lex-bots-api-openapi.yml
  - type: Documentation
    url: https://docs.aws.amazon.com/lex/latest/dg/what-is.html
  - type: JSONSchema
    url: json-schema/json-schema.yml
  - type: JSONLD
    url: json-ld/json-ld.yml
  - type: Pricing
    url: https://aws.amazon.com/lex/pricing/
  - type: GettingStarted
    url: https://aws.amazon.com/lex/getting-started/
  - type: FAQ
    url: https://aws.amazon.com/lex/faqs/
  - type: JSONSchema
    url: json-schema/amazon-lex-bot-schema.json
  - type: JSONSchema
    url: json-schema/amazon-lex-intent-schema.json
  - type: JSONLD
    url: json-ld/amazon-lex-context.jsonld
common:
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/amazon-lex/overview
- type: AgenticAccess
  url: agentic-access/amazon-lex-agentic-access.yml
- type: TrustCenter
  url: security/amazon-lex-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/amazon-lex-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/amazon-lex-domain-security.yml
- type: Authentication
  url: authentication/amazon-lex-authentication.yml
- type: Portal
  url: https://aws.amazon.com/
- type: Website
  url: https://aws.amazon.com/lex/
- type: Documentation
  url: https://docs.aws.amazon.com/lex/
- type: TermsOfService
  url: https://aws.amazon.com/service-terms/
- type: PrivacyPolicy
  url: https://aws.amazon.com/privacy/
- type: Support
  url: https://aws.amazon.com/premiumsupport/
- type: Blog
  url: https://aws.amazon.com/blogs/machine-learning/
- type: github
  url: https://github.com/aws
- type: Console
  url: https://console.aws.amazon.com/lex/
- type: Signup
  url: https://portal.aws.amazon.com/billing/signup
- type: Login
  url: https://signin.aws.amazon.com/
- type: StatusPage
  url: https://health.aws.amazon.com/health/status
- type: knowledge-center
  url: https://repost.aws/knowledge-center
- type: YouTube
  url: https://www.youtube.com/user/AmazonWebServices
- type: StackOverflow
  url: https://stackoverflow.com/questions/tagged/amazon-lex
- type: Contact
  url: https://aws.amazon.com/contact-us/
- type: Security
  url: https://aws.amazon.com/security/
- type: Compliance
  url: https://aws.amazon.com/compliance/
- type: Features
  data:
  - name: Automatic Speech Recognition
    description: Convert speech to text with high accuracy using the same deep learning technology as Amazon Alexa.
  - name: Natural Language Understanding
    description: Understand the intent behind user input to build conversational interfaces.
  - name: Multi-Channel Deployment
    description: Deploy bots across web, mobile, messaging channels (Slack, Facebook Messenger, Twilio), and contact centers.
  - name: Amazon Connect Integration
    description: Build intelligent contact center bots with native integration with Amazon Connect.
  - name: Streaming Conversations
    description: Support multi-turn streaming conversations for complex dialog flows.
  - name: Intent Recognition
    description: Recognize user intents and extract slot values from natural language input.
- type: UseCases
  data:
  - name: Customer Service Chatbot
    description: Build self-service chatbots for customer support and FAQ handling.
  - name: Contact Center Automation
    description: Automate contact center interactions with intelligent IVR and agent assist.
  - name: Internal Help Desk
    description: Create employee-facing bots for IT help desk and HR self-service.
  - name: E-Commerce Assistant
    description: Build shopping assistants that understand natural language product queries.
- type: Integrations
  data:
  - name: Amazon Connect
    description: Deploy Lex bots in Amazon Connect contact flows for IVR and agent assist.
  - name: Amazon Kendra
    description: Combine Lex for dialog management with Kendra for intelligent document search.
  - name: AWS Lambda
    description: Use Lambda for fulfillment logic and business rules in bot conversations.
  - name: Amazon Polly
    description: Convert bot text responses to natural speech using Amazon Polly TTS.
- type: SpectralRules
  url: rules/amazon-lex-spectral-rules.yml
- type: Vocabulary
  url: vocabulary/amazon-lex-vocabulary.yaml
maintainer:
  name: Kin Lane
  email: kin@apievangelist.com