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 11 API contracts indexed on the APIs.io network, including Bots API, Builtins API, Createuploadurl API, and 8 more. Tagged areas include Artificial Intelligence, Conversational AI, Chatbots, Natural Language Processing, and Speech.
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, developer console, signup flow, and 48 more developer resources.
What this lets a business do 1
Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →
What people ask Amazon Lex 11
The questions people put to an LLM, and the jobs they hand an agent, that Amazon Lex's APIs answer — each one linked to the operation that does it. Generated by API Evangelist
Kin Score
Markets this provider is in provisional
The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.
| Market | Position | Depth | Registered MCP server | Declares compatibility |
|---|---|---|---|---|
| Workplace Collaboration App Marketplaces | undeclared | - | - | - |
| HubSpot App Marketplace (CRM add-ons, outbound, performance marketing, chat) | undeclared | - | - | - |
| Intercom App Store (customer-support, chat and messaging integrations) | undeclared | - | - | - |
Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.
Standards implemented 2
Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.
APIs 11
Individual APIs this provider publishes, each with its own machine-readable definition.
Amazon Lex Bots API
Lex bot management
Amazon Lex Builtins API
The builtins API from Amazon Lex — 2 operation(s) for builtins.
Amazon Lex Createuploadurl API
The createuploadurl API from Amazon Lex — 1 operation(s) for createuploadurl.
Amazon Lex Exports API
The exports API from Amazon Lex — 2 operation(s) for exports.
Amazon Lex Imports API
The imports API from Amazon Lex — 2 operation(s) for imports.
Amazon Lex Policy API
The policy API from Amazon Lex — 3 operation(s) for policy.
Amazon Lex Tags API
The tags API from Amazon Lex — 1 operation(s) for tags.
Amazon Lex Testexecutions API
The testexecutions API from Amazon Lex — 4 operation(s) for testexecutions.
Amazon Lex Testsetdiscrepancy API
The testsetdiscrepancy API from Amazon Lex — 1 operation(s) for testsetdiscrepancy.
Amazon Lex Testsetgenerations API
The testsetgenerations API from Amazon Lex — 2 operation(s) for testsetgenerations.
Amazon Lex Testsets API
The testsets API from Amazon Lex — 5 operation(s) for testsets.
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Postman Collections 1
Ready-to-run Postman collections for exercising this provider's APIs.
Amazon Lex Bots API
POSTMANOpen Collections 3
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
MCP Servers 1
Model Context Protocol servers that expose these APIs to AI agents.
Amazon Lex MCP Server
Remote MCP server at aws-mcp.us-east-1.api.aws requiring an API key; 8 tools listed.
MCP SERVERAgent Skills 3
Packaged agent skills for driving this provider's APIs from an AI assistant.
Build and ship an Amazon Lex V2 bot
AGENT SKILLConverse with an Amazon Lex V2 bot
AGENT SKILLAmazon Lex API pricing
Prices published by Amazon Lex, read 2026-10-28 from aws.amazon.com/lex/pricing/.
| Plan | Price |
|---|---|
| Request and response - speech request | $0.004 per speech request |
| Request and response - text request | $0.00075 |
| Streaming conversation - speech interval | $0.0065 |
| Streaming conversation - text request | $0.0020 |
| Automated chatbot designer training | $0.50 per minute |
| AWS Free Tier credits | up to $200 in AWS Free Tier credits Includes: Free plan available for 6 months after account creation; credits must be used within 12 months |
Plan details, limits and sources →
Rate limits
- Bots per AWS account: 100
- Bot channel associations per AWS account: 5000
- Parallel locale builds per AWS account: 5
Billed by: text request · FinOps profile →
Pricing Plans 1
Published pricing tiers and plan structures.
Rate Limits 1
Documented rate limits and quota policies.
Amazon Lex Rate Limits
RATE LIMITSService Levels 1
Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.
Amazon Lex
SLAFinOps 1
Cost, billing, and metering signals for API financial operations.
Amazon Lex Finops
FINOPSFeatures 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
JSON-LDSpectral Rules 2
Spectral governance rulesets for linting and validating these APIs.
Amazon Lex — jsonschema rules
SPECTRALAmazon Lex API Rules
SPECTRALOpenAPI Overlays 13
Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.
Amazon Lex Bots Api Phrasing Overlay
GENERATEDAmazon Lex Builtins Api Phrasing Overlay
GENERATEDAmazon Lex Exports Api Phrasing Overlay
GENERATEDAmazon Lex Imports Api Phrasing Overlay
GENERATEDAmazon Lex Models V2 Overlay
DERIVEDAmazon Lex Policy Api Phrasing Overlay
GENERATEDAmazon Lex Runtime V2 Overlay
DERIVEDAmazon Lex Tags Api Phrasing Overlay
GENERATEDAmazon Lex Testsets Api Phrasing Overlay
GENERATEDScroll for all 13
JSON Schema 2
Standalone JSON Schema definitions for this provider's data models.
JSON Structure 2
JSON Structure definitions describing this provider's data shapes.
Amazon Lex Bot Structure
JSON STRUCTUREAmazon Lex Intent Structure
JSON STRUCTUREExamples 2
Example request and response payloads for these APIs.
Amazon Lex Bot Example
EXAMPLEAmazon Lex Intent Example
EXAMPLESecurity Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
Recommended x-agentic-access execution contracts for AI agents.
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 7
Portal, sign-up, and the first successful call
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Documentation 2
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
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Build 7
SDKs, sample code, and the tooling you integrate with
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Access & Security 7
Authentication, authorization, and security posture
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Learn 1
Tutorials, courses, talks, and written guidance
Operate 7
Status, limits, changes, and where to get help
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Commercial 5
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 5
Properties that don't map to a standard resource type
Source (apis.yml)
Amazon Lex API — frequently asked questions
Does Amazon Lex have an API?
Yes. APIs.io lists 11 APIs from Amazon Lex, including Amazon Lex Bots API, Amazon Lex Builtins API and Amazon Lex Createuploadurl API, and 8 more.
Is there an OpenAPI specification for the Amazon Lex API?
Yes. APIs.io indexes 11 OpenAPI specifications for Amazon Lex, each linked for download from this page.
How do I authenticate with the Amazon Lex API?
Amazon Lex uses bearer-token authentication (sigv4 · 1 scheme). The details are profiled on APIs.io as Amazon Lex Authentication.
How much does the Amazon Lex API cost?
Amazon Lex publishes its prices; its Request and response - speech request plan is $0.004 per speech request as of 2026-10-28. APIs.io lists 6 pricing plans for Amazon Lex, with each plan's price, limits and inclusions under Pricing on this page.
Does Amazon Lex have an MCP server?
Yes. APIs.io lists 1 MCP server for Amazon Lex: Remote MCP server at aws-mcp.us-east-1.api.aws requiring an API key; 8 tools listed.
Is the Amazon Lex API ready for AI agents?
Amazon Lex has a Kin Score of 79.9 out of 100 (exemplar) and an Agent Readiness score of 34.5 (agent-ready), scored by API Evangelist on 2026-11-06.
Work with this as data
Every provider here is available over the APIs.io API and to AI agents over MCP.