Stamplay

Stamplay was a backend-as-a-service and API-integration platform — billed as "Lego for developers" — founded in 2012 (Turin, Italy; later San Francisco) and backed by 500 Global. It let developers assemble application backends by visually wiring together third-party APIs, authentication providers, hosted data objects, webhooks, and static site hosting on stamplayapp.com, driven by a JavaScript SDK, a Node.js SDK, and the `stamplay` CLI. The product has been discontinued: the company was acquired (widely reported as Apple, 2019), the stamplay.com domain is now held via MarkMonitor and returns no HTTP response, every source repository in the GitHub organization is archived, and the npm SDK/CLI packages were last published in 2016. This API Evangelist profile preserves the historical developer footprint (SDKs and CLI) rather than a live API surface.

Stamplay is profiled on the APIs.io network. Tagged areas include Company, Backend-as-a-Service, API Integration, Low-Code, and Developer Tools.

Stamplay’s developer surface includes CLI and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub
0.0/100 minimal Agent 0/100 human only library Full breakdown ↓
scored 2026-09-25 · rubric v0.23.0
0 APIs
CompanyBackend-as-a-ServiceAPI IntegrationLow-CodeDeveloper ToolsSDKCLIDefunct

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-25 · rubric v0.23.0
Composite quality — 0.0/100 · minimal
Contract Quality 0.0 / 21
Developer Ergonomics 0.0 / 17
Access Clarity 0.0 / 17
Operational Transparency 0.0 / 11
Contract Governance 0.0 / 10
Discoverability 0.0 / 9
Regulatory Posture 0.0 / 15
Agent readiness — 0/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 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
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 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.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
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/stamplay: 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 →

Resources

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 SDKs
SDKs
 Packages
Packages
 CLI
CLI

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: stamplay
deliveryModel:
  model: library
  open_source: false
  commercial: false
  callable_host: false
  label: Library · distributed through package registries, no callable service
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/stamplay.png
name: Stamplay
description: 'Stamplay was a backend-as-a-service and API-integration platform — billed as "Lego for developers" — founded
  in 2012 (Turin, Italy; later San Francisco) and backed by 500 Global. It let developers assemble application backends by
  visually wiring together third-party APIs, authentication providers, hosted data objects, webhooks, and static site hosting
  on stamplayapp.com, driven by a JavaScript SDK, a Node.js SDK, and the `stamplay` CLI. The product has been discontinued:
  the company was acquired (widely reported as Apple, 2019), the stamplay.com domain is now held via MarkMonitor and returns
  no HTTP response, every source repository in the GitHub organization is archived, and the npm SDK/CLI packages were last
  published in 2016. This API Evangelist profile preserves the historical developer footprint (SDKs and CLI) rather than a
  live API surface.'
url: https://raw.githubusercontent.com/api-evangelist/stamplay/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- 500-global
x-tier: stub
x-tier-reason: portfolio-lead
x-status: defunct
x-status-note: Product discontinued; company acquired (widely reported as Apple, 2019). Domain dead (registrar MarkMonitor);
  GitHub repos archived; npm packages last published 2016. No live API surface.
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Backend-as-a-Service
- API Integration
- Low-Code
- Developer Tools
- SDK
- CLI
- Defunct
tags_raw:
- Company
- Backend as a Service
- API Integration
- Low Code
- Developer Tools
- SDK
- CLI
- Defunct
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis: []
common:
- type: Website
  url: https://stamplay.com
- type: GitHubOrganization
  url: https://github.com/Stamplay
- type: SDKs
  url: packages/stamplay-packages.yml
- type: Packages
  url: packages/stamplay-packages.yml
- type: CLI
  url: cli/stamplay-cli.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 2
  pass: local-v1

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