LocalStack

LocalStack is a cloud service emulator that runs in a single container on your laptop or in your CI environment, providing a local test and mocking framework for developing cloud applications against AWS, Snowflake, and Azure without provisioning real infrastructure. It ships a CLI, a Docker image, IaC integrations (Terraform, CDK, SAM, CloudFormation, Pulumi), an official MCP server and Agent Skills, and a local REST API for diagnostics, health checks, service introspection, and retrospective access to emulated AWS resources (SES, SNS, SQS, Lambda, DynamoDB, EventBridge, CloudWatch). Backed by GGV Capital.

LocalStack publishes 2 API contracts indexed on the APIs.io network, including Aws API, and 1 more. Tagged areas include Company, Developer Tools, Cloud, Amazon Web Services, and Emulator.

The LocalStack catalog on APIs.io includes 1 Spectral governance ruleset.

LocalStack’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, pricing, signup flow, and 27 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

53.2/100 developing ▬ flat Agent 34/100 agent ready Front door AI 6/6 dominant Heartbeat 100/100 alive saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessFreemiumSelf serve

1 published contract 1 MCP Servers 6 Agent Skills

Company Developer Tools Cloud Amazon Web Services Emulator Testing DevOps Serverless Infrastructure

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Software Release & Deployment Management

BC-4210

Aws

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 53.2/100 · developing

Contract Quality 7.2 / 19

Developer Ergonomics 11.8 / 15

Access Clarity 10.7 / 15

Operational Transparency 3.3 / 10

Contract Governance 1.6 / 9

Discoverability 4.7 / 8

Regulatory Posture 3.7 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 34/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 4 / 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

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.

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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Request/Response Examples +7 pts — share of operations carrying request/response examples; else an Examples / Code Samples link
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

6 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 38.3 — up to +15.4 composite points
Contract Governance scores 18.2 — up to +9.8 composite points
Operational Transparency scores 34.2 — up to +8.6 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/localstack/apis.yml: open an issue on github.com/api-evangelist/localstack to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

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
IDE Extension Marketplaces (JetBrains, VS Code, Open VSX, Docker Verified Publishers, PyPI orgs)	builds-on	38.0	-	-
GitHub Marketplace (GitHub-native publisher layer)	builds-on	38.0	-	-
Docker Hub Verified Publishers + Official Images	builds-on	38.0	-	-
Vendor CLIs in the Arch User Repository	builds-on	38.0	-	-

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 3

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (documented)

Agent Skills

measured — observed by APIs.io (published)

OpenAPI

measured — observed by APIs.io (published)

APIs 2

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

LocalStack Aws API

The Aws API from LocalStack — 11 operation(s) for aws.

LocalStack API

The localstack API from LocalStack — 8 operation(s) for localstack.

Open Collections 2

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

LocalStack REST API for Community Aws API

OPEN COLLECTION

REST API for Community Aws localstack API

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

LocalStack MCP Server

Local (stdio) MCP server; 11 tools listed.

MCP SERVER

Agent Skills 6

Packaged agent skills for driving this provider's APIs from an AI assistant.

localstack-extensions

AGENT SKILL

localstack-deploy

AGENT SKILL

localstack-iam

AGENT SKILL

localstack

AGENT SKILL

localstack-logs

AGENT SKILL

localstack-state

AGENT SKILL

LocalStack API pricing

Prices published by LocalStack, read 2026-10-28 from www.localstack.cloud/pricing. A free plan or tier is listed.

Plan	Price
Hobby	Free Includes: 30+ emulated services, 1 personal sandbox, Run tests in CI, Extensions Marketplace, VS Code integrat
Base (LocalStack for AWS, annual)	$39 per license/ per month billed annually Includes: 55+ emulated services, Cloud storage for state files (300 MB/workspace, lifetime), Application previ
Base (LocalStack for AWS, monthly)	$45 per license/ per month billed monthly
Ultimate	$89 per license/ per month billed annually Includes: 110+ emulated services, Cloud storage (3 GB/workspace, lifetime), Application previews (500 mins/wor
Enterprise	Custom Includes: Flexible deployment, Kubernetes delivery, GovCloud, SSO+SCIM, air-gapped images, Enterprise Support
Snowflake Base (annual)	$29 per license/ per month billed annually Includes: Snowflake emulator, Run tests in CI, local state persistence, Standard Support
Snowflake Base (monthly)	$35 per license/ per month billed monthly
LocalStack for Azure	Free during Public Preview Includes: Local emulation of core Azure services, ARM and Bicep template deployments

Plan details, limits and sources →

Billed by: license · FinOps profile →

Pricing Plans 2

Published pricing tiers and plan structures.

Localstack Plans Pricing

8 plans

PLANS

Localstack Price Estimates

0 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

LocalStack

SLA

FinOps 1

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

Localstack Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

LocalStack API Rules

45 rules · 38 errors 3 warnings 4 info

SPECTRAL

OpenAPI Overlays 1

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.

Localstack Openapi Overlay

3 actions · update · localstack-openapi-original.yml

DERIVED

Security Posture 2

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

Localstack Authentication

none/auth-token · 2 schemes

SECURITY

Localstack Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

Localstack Agentic Access

27 operations · 8 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

MCPServer

AgentSkill

WellKnown

LLMsTxt

AgenticAccess

Design & Contract 5

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Conformance

Lifecycle

DataModel

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

Packages

SDKs

CLI

Access & Security 2

Authentication, authorization, and security posture

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

StatusPage

StatusPage

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Plans

Pricing

TermsOfService

PrivacyPolicy

Company 3

The organization behind the API

BlogRSS

BlogRSS

Website

Website

Blog

Blog

Other 3

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

APICatalog

APICatalog

Source (apis.yml)

aid: localstack
name: LocalStack
description: LocalStack is a cloud service emulator that runs in a single container on your laptop or in your CI environment,
  providing a local test and mocking framework for developing cloud applications against AWS, Snowflake, and Azure without
  provisioning real infrastructure. It ships a CLI, a Docker image, IaC integrations (Terraform, CDK, SAM, CloudFormation,
  Pulumi), an official MCP server and Agent Skills, and a local REST API for diagnostics, health checks, service introspection,
  and retrospective access to emulated AWS resources (SES, SNS, SQS, Lambda, DynamoDB, EventBridge, CloudWatch). Backed by
  GGV Capital.
url: https://raw.githubusercontent.com/api-evangelist/localstack/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  gated: none
  gated_source:
  - onboarding
  label: Freemium · Self-serve signup
  confidence: medium
  try_now_blocked_by: loopback
  source:
  - plans
  - authentication
  - security
  generated: '2026-11-06'
  method: derived
image: https://github.com/localstack.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- ggv-capital
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
tags:
- Company
- Developer Tools
- Cloud
- Amazon Web Services
- Emulator
- Testing
- DevOps
- Serverless
- Infrastructure
tags_raw:
- Company
- Developer Tools
- Cloud
- AWS
- Emulator
- Testing
- DevOps
- Serverless
- Infrastructure
apis:
- aid: localstack:localstack-aws-api
  name: LocalStack Aws API
  description: The Aws API from LocalStack — 11 operation(s) for aws.
  humanURL: https://docs.localstack.cloud/references/internal-endpoints/
  baseURL: http://localhost.localstack.cloud:4566
  tags:
  - Amazon Web Services
  tags_raw:
  - Aws
  - AWS
  properties:
  - type: OpenAPI
    url: openapi/localstack-aws-api-openapi.yml
- aid: localstack:localstack-localstack-api
  name: LocalStack API
  description: The localstack API from LocalStack — 8 operation(s) for localstack.
  humanURL: https://docs.localstack.cloud/references/internal-endpoints/
  baseURL: http://localhost.localstack.cloud:4566
  tags:
  - localstack
  properties:
  - type: OpenAPI
    url: openapi/localstack-localstack-api-openapi.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Plans
  url: plans/localstack-plans-pricing.yml
- url: https://blog.localstack.cloud/rss.xml
  type: BlogRSS
- type: CapabilityMap
  url: capabilities/localstack-capability-edges.yml
  name: LocalStack Business Capability Map
- type: Overlay
  url: overlays/localstack-openapi-overlay.yaml
- type: Website
  url: https://www.localstack.cloud/
- type: DeveloperPortal
  url: https://docs.localstack.cloud/
- type: Documentation
  url: https://docs.localstack.cloud/
- type: APIReference
  url: https://docs.localstack.cloud/references/internal-endpoints/
- type: GettingStarted
  url: https://docs.localstack.cloud/aws/getting-started/
- type: Blog
  url: https://blog.localstack.cloud/
- type: GitHubOrganization
  url: https://github.com/localstack
- type: Support
  url: https://www.localstack.cloud/contact
- type: Pricing
  url: https://www.localstack.cloud/pricing
- type: SignUp
  url: https://app.localstack.cloud/sign-in
- type: TermsOfService
  url: https://www.localstack.cloud/legal/tos
- type: PrivacyPolicy
  url: https://www.localstack.cloud/legal/privacy-policy
- type: StatusPage
  url: https://status.localstack.cloud
- type: ChangeLog
  url: changelog/localstack-changelog.yml
- type: Packages
  url: packages/localstack-packages.yml
- type: SDKs
  url: packages/localstack-packages.yml
- type: CLI
  url: cli/localstack-cli.yml
- type: MCPServer
  url: mcp/localstack-mcp.yml
- type: AgentSkill
  url: skills/_index.yml
- type: WellKnown
  url: well-known/localstack-well-known.yml
- type: APICatalog
  url: well-known/localstack-api-catalog.json
- type: LLMsTxt
  url: llms/localstack-llms.txt
- type: Authentication
  url: authentication/localstack-authentication.yml
- type: Conventions
  url: conventions/localstack-conventions.yml
- type: ErrorCatalog
  url: errors/localstack-problem-types.yml
- type: Conformance
  url: conformance/localstack-conformance.yml
- type: Lifecycle
  url: lifecycle/localstack-lifecycle.yml
- type: DataModel
  url: data-model/localstack-data-model.yml
- type: AgenticAccess
  url: agentic-access/localstack-agentic-access.yml
- type: DomainSecurity
  url: security/localstack-domain-security.yml
x-enrichment:
  date: '2026-07-20'
  status: enriched
  artifacts_added: 20
  pass: local-v1

LocalStack API — frequently asked questions

Does LocalStack have an API?

Yes. APIs.io lists 2 APIs from LocalStack, including LocalStack Aws API and LocalStack API.

Is there an OpenAPI specification for the LocalStack API?

Yes. APIs.io indexes 2 OpenAPI specifications for LocalStack, each linked for download from this page.

How do I authenticate with the LocalStack API?

LocalStack uses bearer-token authentication (none/auth-token · 2 schemes). The details are profiled on APIs.io as Localstack Authentication.

How much does the LocalStack API cost?

LocalStack publishes its prices; its Base (LocalStack for AWS, annual) plan is $39 per license/ per month billed annually as of 2026-10-28. APIs.io lists 8 pricing plans for LocalStack, with each plan's price, limits and inclusions under Pricing on this page.

Does LocalStack have an MCP server?

Yes. APIs.io lists 1 MCP server for LocalStack: Local (stdio) MCP server; 11 tools listed.

Is the LocalStack API ready for AI agents?

LocalStack has a Kin Score of 53.2 out of 100 (developing) and an Agent Readiness score of 34.4 (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.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

All 92 tools →

Call it yourself

curl for this page

This provider

curl "https://apis.io/api/v1/providers/localstack"

All providers

curl "https://apis.io/api/v1/providers?limit=25"

Every operation they expose

curl "https://apis.io/api/v1/providers/localstack/operations?limit=25"

How their score was established

curl "https://apis.io/api/v1/providers/localstack/evidence"

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