Tin Can

Tin Can is a Seattle-based consumer hardware company behind a screen-free, landline-style Wi-Fi phone for kids — no apps, texting, or games, just voice calls with contacts that parents approve through a companion mobile app, with free unlimited calling between Tin Can devices. Backed by Greylock (which led a $12M round in 2025, bringing total funding to roughly $15.5M). Tin Can publishes no first-party developer API; its agent-facing surface is the Shopify-hosted storefront, which exposes a live MCP server, a UCP merchant profile, an llms.txt, and Shopify Customer Accounts OIDC on the tincan.kids domain.

Tin Can is profiled on the APIs.io network. Tagged areas include Company, Consumer, Hardware, Telecommunications, and Voice.

Tin Can’s developer surface includes support, engineering blog, pricing, authentication, and 10 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

21.6/100 emerging ▬ flat Agent 14/100 agent aware Front door AI 1/6 silent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

0 APIs 1 MCP Servers

Company Consumer Hardware Telecommunications Voice Kids Phone

Kin Score

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

Composite quality — 21.6/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 3.2 / 17

Access Clarity 6.5 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.0 / 9

Regulatory Posture 5.3 / 15

Agent readiness — 14/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 12 / 12

Machine-Readable Auth 10 / 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 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 5 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Telecommunications 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/.

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

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
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)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes
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)

9 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 19.0 — up to +16.2 composite points
Operational Transparency scores 0.0 — up to +13.0 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/tin-can/apis.yml: open an issue on github.com/api-evangelist/tin-can 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 →

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.

Model Context Protocol (MCP)

measured — observed by APIs.io (platform)

Universal Commerce Protocol (UCP)

measured — observed by APIs.io (shopify)

MCP Servers 1

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

Tin Can MCP Server

Remote MCP server at tincan.kids over HTTP; 5 tools listed.

MCP SERVER

Security Posture 2

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

Tin Can Authentication

oauth2/openIdConnect · 1 scheme

SECURITY

Tin Can Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Tin Can Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer

MCPServer

LLMsTxt

LLMsTxt

WellKnown

WellKnown

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 3

Authentication, authorization, and security posture

OAuthScopes

OAuthScopes

Authentication

Authentication

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: tin-can
name: Tin Can
description: Tin Can is a Seattle-based consumer hardware company behind a screen-free, landline-style Wi-Fi phone for kids
  — no apps, texting, or games, just voice calls with contacts that parents approve through a companion mobile app, with free
  unlimited calling between Tin Can devices. Backed by Greylock (which led a $12M round in 2025, bringing total funding to
  roughly $15.5M). Tin Can publishes no first-party developer API; its agent-facing surface is the Shopify-hosted storefront,
  which exposes a live MCP server, a UCP merchant profile, an llms.txt, and Shopify Customer Accounts OIDC on the tincan.kids
  domain.
url: https://raw.githubusercontent.com/api-evangelist/tin-can/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:
  - 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
  - scopes
  - security
  generated: '2026-11-06'
  method: derived
image: https://tincan.kids/cdn/shop/files/tinothy-icon.svg
x-type: company
x-source: vc-portfolio
x-backed-by:
- greylock
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Consumer
- Hardware
- Telecommunications
- Voice
- Kids
- Phone
tags_raw:
- Company
- Consumer
- Hardware
- Telecommunications
- Voice
- Kids
- Phones
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://tincan.kids/
- type: Support
  url: https://faq.tincan.com/
- type: Blog
  url: https://tincan.kids/blogs/news
- type: Login
  url: https://tincan.kids/account/login
- type: Pricing
  url: https://tincan.kids/products/tin-can
- type: TermsOfService
  url: https://tincan.kids/policies/terms-of-service
- type: PrivacyPolicy
  url: https://tincan.kids/policies/privacy-policy
- type: MCPServer
  url: mcp/tin-can-mcp.yml
- type: LLMsTxt
  url: llms/tin-can-llms.txt
- type: WellKnown
  url: well-known/tin-can-well-known.yml
- type: OAuthScopes
  url: scopes/tin-can-scopes.yml
- type: Authentication
  url: authentication/tin-can-authentication.yml
- type: Conformance
  url: conformance/tin-can-conformance.yml
- type: DomainSecurity
  url: security/tin-can-domain-security.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 10
  pass: local-v1

Tin Can API — frequently asked questions

How do I authenticate with the Tin Can API?

Tin Can documents its authentication (oauth2/openIdConnect · 1 scheme). The details are profiled on APIs.io as Tin Can Authentication.

Does Tin Can have an MCP server?

Yes. APIs.io lists 1 MCP server for Tin Can: Remote MCP server at tincan.kids over HTTP; 5 tools listed.

Is the Tin Can API ready for AI agents?

Tin Can has a Kin Score of 21.6 out of 100 (emerging) and an Agent Readiness score of 13.8 (agent-aware), scored by API Evangelist on 2026-11-06.

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