Stack Machine

StackMachine is elastic, headless infrastructure for AI applications and agents. It runs existing Node.js, Python, and PHP codebases as WebAssembly with sub-5ms cold starts and sandboxed execution for untrusted or AI-generated code, packing thousands of apps per server. The platform is driven by a single GraphQL API (api.stackmachine.com/graphql) plus official JavaScript and Python SDKs, exposing app deployment, custom domains and DNS, managed databases and volumes, cron jobs, secrets, transactional email, cloud storage, package publishing, SSH access, and usage metering. Backed by a16z.

Stack Machine publishes 1 API on the APIs.io network. Tagged areas include Company, Infrastructure, Serverless, WebAssembly, and Edge Compute.

Stack Machine’s developer surface includes documentation, API reference, getting-started guide, support, pricing, signup flow, authentication, and 21 more developer resources.

🌐 Visit website 📡 Source on GitHub

39.8/100 developing ▬ flat Agent 23/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

1 APIs

Company Infrastructure Serverless WebAssembly Edge Compute AI Applications GraphQL Platform-as-a-Service Deployment Hosting DNS Databases

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 39.8/100 · developing

Contract Quality 10.4 / 25

Developer Ergonomics 14.2 / 20

Access Clarity 4.7 / 20

Operational Transparency 2.4 / 13

Contract Governance 0.5 / 12

Discoverability 7.6 / 10

Agent readiness — 23/100 · agent aware

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 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 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 could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/stack-machine: 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 1

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

StackMachine GraphQL API

Single GraphQL endpoint for deploying and managing StackMachine apps, custom domains and DNS, managed databases and volumes, cron jobs, secrets, transactional email, cloud stora...

Security Posture 2

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

Stack Machine Authentication

apiKey · 1 scheme

SECURITY

Stack Machine Domain Security

TLSv1.3

SECURITY

Resources

Get Started 5

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Login

Sandbox

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

GraphQL

GraphQL

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

X-MCPServerCandidate

X-MCPServerCandidate

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

ErrorCatalog

Lifecycle

DataModel

Conformance

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Packages

Packages

SDKs

SDKs

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Operate 2

Status, limits, changes, and where to get help

Support

Support

ChangeLog

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Source (apis.yml)

aid: stack-machine
name: Stack Machine
description: StackMachine is elastic, headless infrastructure for AI applications and agents. It runs existing Node.js, Python,
  and PHP codebases as WebAssembly with sub-5ms cold starts and sandboxed execution for untrusted or AI-generated code, packing
  thousands of apps per server. The platform is driven by a single GraphQL API (api.stackmachine.com/graphql) plus official
  JavaScript and Python SDKs, exposing app deployment, custom domains and DNS, managed databases and volumes, cron jobs, secrets,
  transactional email, cloud storage, package publishing, SSH access, and usage metering. Backed by a16z.
url: https://raw.githubusercontent.com/api-evangelist/stack-machine/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
x-tier: stub
x-tier-reason: portfolio-lead
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-09-03'
  method: derived
image: https://www.stackmachine.com/opengraph-image.png
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Infrastructure
- Serverless
- WebAssembly
- Edge Compute
- AI Applications
- GraphQL
- Platform-as-a-Service
- Deployment
- Hosting
- DNS
- Databases
tags_raw:
- Company
- Infrastructure
- Serverless
- WebAssembly
- Edge Compute
- AI Applications
- GraphQL
- Platform as a Service
- Deployment
- Hosting
- DNS
- Databases
apis:
- name: StackMachine GraphQL API
  description: Single GraphQL endpoint for deploying and managing StackMachine apps, custom domains and DNS, managed databases
    and volumes, cron jobs, secrets, transactional email, cloud storage, package publishing, SSH access, and usage metering.
    Relay-style schema (Node global IDs, cursor connections) with API-key authentication.
  humanURL: https://docs.stackmachine.com/
  baseURL: https://api.stackmachine.com/graphql
  tags:
  - GraphQL
  - Deployment
  - Infrastructure
  properties:
  - type: GraphQL
    url: graphql/stack-machine-schema.graphql
  - type: Documentation
    url: https://docs.stackmachine.com/
  - type: APIReference
    url: https://docs.stackmachine.com/
common:
- type: Website
  url: https://www.stackmachine.com/
- type: DomainSecurity
  url: security/stack-machine-domain-security.yml
- type: DeveloperPortal
  url: https://docs.stackmachine.com/
- type: Documentation
  url: https://docs.stackmachine.com/
- type: APIReference
  url: https://docs.stackmachine.com/
- type: GettingStarted
  url: https://docs.stackmachine.com/getting-started/installation
- type: GitHubOrganization
  url: https://github.com/stackmachine
- type: Support
  url: https://github.com/stackmachine/sdks/issues
- type: Pricing
  url: https://stackmachine.com/pricing
- type: SignUp
  url: https://dashboard.stackmachine.com/signup
- type: Login
  url: https://dashboard.stackmachine.com/signin
- type: TermsOfService
  url: https://stackmachine.com/terms
- type: PrivacyPolicy
  url: https://stackmachine.com/privacy
- type: GraphQL
  url: graphql/stack-machine-schema.graphql
- type: Packages
  url: packages/stack-machine-packages.yml
- type: SDKs
  url: packages/stack-machine-packages.yml
- type: Authentication
  url: authentication/stack-machine-authentication.yml
- type: Conventions
  url: conventions/stack-machine-conventions.yml
- type: Idempotency
  url: conventions/stack-machine-conventions.yml
- type: ErrorCatalog
  url: errors/stack-machine-error-codes.yml
- type: Lifecycle
  url: lifecycle/stack-machine-lifecycle.yml
- type: ChangeLog
  url: changelog/stack-machine-changelog.yml
- type: DataModel
  url: data-model/stack-machine-data-model.yml
- type: Conformance
  url: conformance/stack-machine-conformance.yml
- type: X-MCPServerCandidate
  url: mcp/stack-machine-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/stack-machine-llms.txt
- type: Sandbox
  url: sandbox/stack-machine-sandbox.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 18
  pass: local-v1
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io

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/stack-machine"

All providers

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

Every operation they expose

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

How their score was established

curl "https://apis.io/api/v1/providers/stack-machine/evidence"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

GitHub Google LinkedIn

A second provider on the same verified email joins the account you already have.