Amazon KMS

AWS Key Management Service (KMS) is a managed service that makes it easy to create and control the cryptographic keys used to protect your data, integrated with other AWS services to simplify encryption of data stored and managed in those services.

Amazon KMS publishes 2 APIs on the APIs.io network: Cryptographic Operations API and Keys API. Tagged areas include Cryptography, Data Protection, Encryption, Key Management, and Security.

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

Amazon KMS’s developer surface includes authentication, engineering blog, support, developer console, CLI, developer portal, documentation, and 25 more developer resources.

🌐 Visit website 📡 Source on GitHub

61.1/100 strong ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-10 · rubric v0.20.0

AccessFreemiumSelf serve⚡ Free to try

1 APIs 6 Features 4 Use Cases

Cryptography Data Protection Encryption Key Management Security

Kin Score

Kin Score How this is scored →
scored 2026-09-10 · rubric v0.20.0

Composite quality — 61.1/100 · strong

Contract Quality 14.5 / 23

Developer Ergonomics 14.4 / 18

Access Clarity 13.7 / 18

Operational Transparency 3.1 / 12

Contract Governance 3.1 / 11

Discoverability 6.8 / 9

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 20/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/amazon-kms: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 2

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

Amazon KMS Cryptographic Operations API

Encryption, decryption, and signing operations

Amazon KMS Keys API

KMS cryptographic key management

Postman Collections 1

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

Amazon KMS API

POSTMAN

Open Collections 4

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

API Collection

OPEN COLLECTION

Amazon KMS Cryptographic Operations API

OPEN COLLECTION

Amazon KMS Cryptographic Operations Keys API

OPEN COLLECTION

Amazon KMS API

OPEN COLLECTION

Arazzo Workflows 8

Multi-step API workflows described with the Arazzo specification.

Amazon KMS Create Key and Describe

Create a new customer managed KMS key and read back its full metadata.

ARAZZO

Amazon KMS Generate and Recover Data Key

Generate a data key, then decrypt its encrypted form to recover the plaintext key.

ARAZZO

Amazon KMS Disable and Schedule Key Deletion

Disable a KMS key and then schedule it for deletion after a waiting period.

ARAZZO

Amazon KMS Enable Key and Verify State

Enable a disabled KMS key and confirm it is back in the Enabled state.

ARAZZO

Amazon KMS Envelope Encrypt and Decrypt

Generate a data key, then round-trip ciphertext through encrypt and decrypt.

ARAZZO

Amazon KMS List and Describe Keys

List the KMS keys in the account and describe the first one in detail.

ARAZZO

Amazon KMS Provision Key and Encrypt

Create a KMS key, enable it, and immediately encrypt a payload with it.

ARAZZO

Amazon KMS Sign and Verify

Sign a message with an asymmetric KMS key, then verify the signature.

ARAZZO

Scroll for all 8

Pricing Plans 1

Published pricing tiers and plan structures.

Amazon Kms Plans Pricing

3 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Amazon Kms Rate Limits

5 limits

RATE LIMITS

FinOps 1

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

Amazon Kms Finops

FINOPS

Features 6

Notable capabilities this provider offers.

Centralized Key Management

Create, import, rotate, disable, delete, and audit usage of cryptographic keys from a central location.

Hardware Security Modules

Keys are protected by FIPS 140-2 validated hardware security modules (HSMs).

Automatic Key Rotation

Enable automatic annual rotation of KMS keys without changing key ARNs.

Multi-Region Keys

Create multi-Region keys that can be replicated into multiple AWS Regions.

Asymmetric Key Support

Generate and use asymmetric RSA and ECC key pairs for encryption and signing.

CloudTrail Integration

Every KMS API call is logged to AWS CloudTrail for auditing and compliance.

Semantic Vocabularies 1

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

Amazon Kms Context

1 classes · 7 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

Amazon KMS API Rules

5 rules · 4 warnings 1 info

SPECTRAL

Amazon KMS API Rules

24 rules · 9 errors 15 warnings

SPECTRAL

JSON Schema 1

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

Key

10 properties

JSON SCHEMA

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Amazon Kms Key Structure

10 properties

JSON STRUCTURE

Examples 1

Example request and response payloads for these APIs.

Amazon Kms Key Example

10 fields

EXAMPLE

Security Posture 4

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

Amazon Kms Authentication

apiKey · 1 scheme

SECURITY

Amazon Kms Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Amazon Kms Vulnerability Disclosure

security.txt · contact published

SECURITY

Amazon Kms Trust Center

PCI DSS, HIPAA, FedRAMP, GDPR, FIPS 140

SECURITY

Agentic Access 1

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

Amazon Kms Agentic Access

11 operations · 9 acting · 1 human-in-the-loop

11 operations · 9 acting

AGENTIC

Use Cases 4

What developers build with this provider.

Data at Rest Encryption

Encrypt data stored in S3, RDS, EBS, and other AWS services using KMS keys.

Envelope Encryption

Use KMS to generate data encryption keys for envelope encryption patterns.

Digital Signatures

Use asymmetric KMS keys to sign and verify digital signatures.

BYOK (Bring Your Own Key)

Import your own cryptographic key material into AWS KMS for compliance requirements.

Resources

Get Started 4

Portal, sign-up, and the first successful call

Console

Portal

GettingStarted

Signup

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

Design & Contract 10

Pagination, idempotency, versioning, errors, and events

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

Arazzo

SpectralRules

Vocabulary

Scroll for all 10

Build 4

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace

PostmanWorkspace

CLI

CLI

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

TrustCenter

TrustCenter

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Authentication

Authentication

Compliance

Compliance

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

FAQ

FAQ

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

Pricing

Pricing

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Blog

Blog

Source (apis.yml)

name: Amazon KMS
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
specificationVersion: '0.23'
segments:
- Security
- Encryption
description: AWS Key Management Service (KMS) is a managed service that makes it easy to create and control the cryptographic
  keys used to protect your data, integrated with other AWS services to simplify encryption of data stored and managed in
  those services.
url: https://aws.amazon.com/kms/
type: Index
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://a0.awsstatic.com/libra-css/images/logos/aws_logo_smile_1200x630.png
tags:
- AWS
- Cryptography
- Data Protection
- Encryption
- Key Management
- Security
created: '2024-01-15'
modified: '2026-05-19'
apis:
- aid: amazon-kms:amazon-kms-cryptographic-operations-api
  name: Amazon KMS Cryptographic Operations API
  description: Encryption, decryption, and signing operations
  humanURL: https://aws.amazon.com/kms/
  baseURL: https://kms.amazonaws.com
  tags:
  - Cryptographic Operations
  properties:
  - type: OpenAPI
    url: openapi/amazon-kms-cryptographic-operations-api-openapi.yml
  - type: Documentation
    url: https://docs.aws.amazon.com/kms/latest/developerguide/overview.html
  - type: Pricing
    url: https://aws.amazon.com/kms/pricing/
  - type: GettingStarted
    url: https://aws.amazon.com/kms/getting-started/
  - type: FAQ
    url: https://aws.amazon.com/kms/faqs/
  - type: Features
    url: https://aws.amazon.com/kms/features/
  - type: APIReference
    url: https://docs.aws.amazon.com/kms/latest/APIReference/Welcome.html
  - type: JSONLD
    url: json-ld/amazon-kms-context.jsonld
  - type: JSONSchema
    url: json-schema/amazon-kms-key-schema.json
- aid: amazon-kms:amazon-kms-keys-api
  name: Amazon KMS Keys API
  description: KMS cryptographic key management
  humanURL: https://aws.amazon.com/kms/
  baseURL: https://kms.amazonaws.com
  tags:
  - Keys
  properties:
  - type: OpenAPI
    url: openapi/amazon-kms-keys-api-openapi.yml
  - type: Documentation
    url: https://docs.aws.amazon.com/kms/latest/developerguide/overview.html
  - type: Pricing
    url: https://aws.amazon.com/kms/pricing/
  - type: GettingStarted
    url: https://aws.amazon.com/kms/getting-started/
  - type: FAQ
    url: https://aws.amazon.com/kms/faqs/
  - type: Features
    url: https://aws.amazon.com/kms/features/
  - type: APIReference
    url: https://docs.aws.amazon.com/kms/latest/APIReference/Welcome.html
  - type: JSONLD
    url: json-ld/amazon-kms-context.jsonld
  - type: JSONSchema
    url: json-schema/amazon-kms-key-schema.json
common:
- type: AgenticAccess
  url: agentic-access/amazon-kms-agentic-access.yml
- type: TrustCenter
  url: security/amazon-kms-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/amazon-kms-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/amazon-kms-domain-security.yml
- type: Authentication
  url: authentication/amazon-kms-authentication.yml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/amazon-kms/overview
- type: Arazzo
  url: arazzo/amazon-kms-create-key-and-describe-workflow.yml
  name: Amazon KMS Create Key and Describe
- type: Arazzo
  url: arazzo/amazon-kms-data-key-generate-and-decrypt-workflow.yml
  name: Amazon KMS Generate and Recover Data Key
- type: Arazzo
  url: arazzo/amazon-kms-disable-and-schedule-deletion-workflow.yml
  name: Amazon KMS Disable and Schedule Key Deletion
- type: Arazzo
  url: arazzo/amazon-kms-enable-key-and-verify-state-workflow.yml
  name: Amazon KMS Enable Key and Verify State
- type: Arazzo
  url: arazzo/amazon-kms-envelope-encrypt-decrypt-workflow.yml
  name: Amazon KMS Envelope Encrypt and Decrypt
- type: Arazzo
  url: arazzo/amazon-kms-list-and-describe-keys-workflow.yml
  name: Amazon KMS List and Describe Keys
- type: Arazzo
  url: arazzo/amazon-kms-provision-key-and-encrypt-workflow.yml
  name: Amazon KMS Provision Key and Encrypt
- type: Arazzo
  url: arazzo/amazon-kms-sign-and-verify-workflow.yml
  name: Amazon KMS Sign and Verify
- type: Blog
  url: https://aws.amazon.com/blogs/security/category/security-identity-compliance/aws-key-management-service/
- type: Support
  url: https://aws.amazon.com/premiumsupport/
- type: Console
  url: https://console.aws.amazon.com/kms/home
- type: CLI
  url: https://docs.aws.amazon.com/cli/latest/reference/kms/
- type: SDKs
  url: https://aws.amazon.com/tools/
- type: StatusPage
  url: https://status.aws.amazon.com/
- type: Compliance
  url: https://aws.amazon.com/compliance/
- type: TermsOfService
  url: https://aws.amazon.com/service-terms/
- type: Portal
  url: https://aws.amazon.com/kms/
- type: Documentation
  url: https://docs.aws.amazon.com/kms/
- type: Pricing
  url: https://aws.amazon.com/kms/pricing/
- type: GettingStarted
  url: https://aws.amazon.com/kms/getting-started/
- type: FAQ
  url: https://aws.amazon.com/kms/faqs/
- type: PrivacyPolicy
  url: https://aws.amazon.com/privacy/
- type: Signup
  url: https://portal.aws.amazon.com/billing/signup
- type: GitHubOrganization
  url: https://github.com/aws
- type: Features
  data:
  - name: Centralized Key Management
    description: Create, import, rotate, disable, delete, and audit usage of cryptographic keys from a central location.
  - name: Hardware Security Modules
    description: Keys are protected by FIPS 140-2 validated hardware security modules (HSMs).
  - name: Automatic Key Rotation
    description: Enable automatic annual rotation of KMS keys without changing key ARNs.
  - name: Multi-Region Keys
    description: Create multi-Region keys that can be replicated into multiple AWS Regions.
  - name: Asymmetric Key Support
    description: Generate and use asymmetric RSA and ECC key pairs for encryption and signing.
  - name: CloudTrail Integration
    description: Every KMS API call is logged to AWS CloudTrail for auditing and compliance.
- type: UseCases
  data:
  - name: Data at Rest Encryption
    description: Encrypt data stored in S3, RDS, EBS, and other AWS services using KMS keys.
  - name: Envelope Encryption
    description: Use KMS to generate data encryption keys for envelope encryption patterns.
  - name: Digital Signatures
    description: Use asymmetric KMS keys to sign and verify digital signatures.
  - name: BYOK (Bring Your Own Key)
    description: Import your own cryptographic key material into AWS KMS for compliance requirements.
- type: Integrations
  data:
  - name: Amazon S3
    description: Encrypt S3 objects at rest using SSE-KMS with customer managed keys.
  - name: Amazon RDS
    description: Encrypt RDS database instances and automated backups with KMS keys.
  - name: AWS CloudTrail
    description: All KMS API usage is automatically logged for audit and compliance.
  - name: AWS Secrets Manager
    description: Encrypt secrets stored in Secrets Manager with KMS keys.
  - name: AWS Lambda
    description: Encrypt Lambda environment variables with KMS customer managed keys.
- type: SpectralRules
  url: rules/amazon-kms-spectral-rules.yml
- type: Vocabulary
  url: vocabulary/amazon-kms-vocabulary.yaml
- type: Integrations
  url: https://aws.amazon.com/marketplace
integrations:
- name: Sign in
- name: Agent Mode
- name: Why AWS Marketplace?
- name: Get started in AWS Marketplace
- name: Industry
- name: Resources
- name: Become a Channel Partner
- name: Sell in AWS Marketplace
- name: Manage Your Account
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
  url: https://apievangelist.com
include: []
x-parent: aws
x-relationship: product

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