Fivestars

Fivestars was a customer loyalty, rewards, and payments platform for small and mid-sized brick-and-mortar merchants, founded in 2010 and headquartered in San Francisco. It combined an automated marketing engine, a customer loyalty and rewards program, and integrated card payments so local businesses could turn one-time shoppers into repeat customers. Fivestars was backed by Lightspeed Venture Partners, Menlo Ventures, and Y Combinator. The company was acquired by SumUp in 2021 and its product has since been folded into SumUp Connect (SumUp Loyalty); fivestars.com now redirects to SumUp's loyalty program. Fivestars publishes no public API, no developer portal and no machine-readable contract — api.fivestars.com resolves but returns 404 on every spec and well-known path, and developers.fivestars.com does not resolve. Fivestars-branded surfaces that remain live include the marketing site, merchant dashboard, help center and a public status page, plus one first-party iOS library (TapiSDK) for legacy cPay terminal integrators. This profile is retained in the API Evangelist network as a historical company record.

Fivestars is profiled on the APIs.io network. Tagged areas include Company, Loyalty, Rewards, Payments, and Point-of-Sale.

Fivestars’ developer surface includes support and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

13.7/100 emerging ▬ flat Agent 3/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Loyalty Rewards Payments Point-of-Sale Customer Engagement Marketing Small Business

Kin Score

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

Composite quality — 13.7/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 4.7 / 17

Operational Transparency 2.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 3.3 / 15

Agent readiness — 3/100 · 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 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

Regulatory Posture applies to this provider. Its tags matched the Payments 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/fivestars: 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 →

Pricing Plans 1

Published pricing tiers and plan structures.

Fivestars Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fivestars Rate Limits

0 limits

RATE LIMITS

Security Posture 1

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

Fivestars Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Login

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Build 3

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

StatusPage

StatusPage

RateLimits

RateLimits

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Plans

Plans

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

ParentCompany

ParentCompany

Source (apis.yml)

aid: fivestars
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:
  - url: https://fivestars.com
    status: 301
    note: declared website redirects to https://www.sumup.com/en-us/loyalty-program/ — a different registrable domain (fivestars.com
      -> sumup.com), possible rename or acquisition (probed 2026-09-03, roadmap#169)
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/fivestars.png
name: Fivestars
description: Fivestars was a customer loyalty, rewards, and payments platform for small and mid-sized brick-and-mortar merchants,
  founded in 2010 and headquartered in San Francisco. It combined an automated marketing engine, a customer loyalty and rewards
  program, and integrated card payments so local businesses could turn one-time shoppers into repeat customers. Fivestars
  was backed by Lightspeed Venture Partners, Menlo Ventures, and Y Combinator. The company was acquired by SumUp in 2021 and
  its product has since been folded into SumUp Connect (SumUp Loyalty); fivestars.com now redirects to SumUp's loyalty program.
  Fivestars publishes no public API, no developer portal and no machine-readable contract — api.fivestars.com resolves but
  returns 404 on every spec and well-known path, and developers.fivestars.com does not resolve. Fivestars-branded surfaces
  that remain live include the marketing site, merchant dashboard, help center and a public status page, plus one first-party
  iOS library (TapiSDK) for legacy cPay terminal integrators. This profile is retained in the API Evangelist network as a
  historical company record.
url: https://raw.githubusercontent.com/api-evangelist/fivestars/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- lightspeed-venture-partners
- menlo-ventures
- y-combinator
x-tier: stub
x-tier-reason: portfolio-lead
x-status: acquired
x-acquired-by: sumup
x-successor-product: SumUp Connect (SumUp Loyalty)
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-08-13'
tags:
- Company
- Loyalty
- Rewards
- Payments
- Point-of-Sale
- Customer Engagement
- Marketing
- Small Business
tags_raw:
- Company
- Loyalty
- Rewards
- Payments
- Point of Sale
- Customer Engagement
- Marketing
- Small Business
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: ParentCompany
  url: https://apis.io/providers/sumup/
  name: SumUp
  x-relationship: acquired
  x-evidence: The company was acquired by SumUp in 2021 and its product has since been folded into SumUp Connect (SumUp Loyalty);
    fivestars.
- type: DomainSecurity
  url: security/fivestars-domain-security.yml
- type: Website
  url: https://fivestars.com
- type: Packages
  url: packages/fivestars-packages.yml
- type: SDKs
  url: packages/fivestars-packages.yml
- type: Lifecycle
  url: lifecycle/fivestars-lifecycle.yml
- type: StatusPage
  url: https://status.fivestars.com
- type: LLMsTxt
  url: llms/fivestars-llms.txt
- type: Plans
  url: plans/fivestars-plans-pricing.yml
- type: RateLimits
  url: rate-limits/fivestars-rate-limits.yml
- type: Support
  url: https://help.fivestars.com
- type: GitHubOrganization
  url: https://github.com/fivestars
- type: Login
  url: https://dashboard.fivestars.com
- type: TermsOfService
  url: https://fsweb.fivestars.com/legal/
- type: PrivacyPolicy
  url: https://fsweb.fivestars.com/privacy/
x-enrichment:
  date: '2026-08-13'
  status: minimal
  artifacts_added: 6
  pass: local-v1
x-coverage:
  state: none
  reason: defunct
  detail: Fivestars was fully absorbed into SumUp — fivestars.com 301s to sumup.com/en-us/loyalty-program/, api.fivestars.com
    resolves through SumUp's edge but 404s on every spec and .well-known path, developers.fivestars.com and docs.fivestars.com
    do not resolve, and the Wayback Machine holds no capture of a Fivestars developer portal at any point.
  evidence:
  - url: https://fivestars.com/
    status: 301
  - url: https://api.fivestars.com/openapi.json
    status: 404
  - url: https://www.fivestars.com/developers
    status: 404
  - url: https://status.fivestars.com/api/v2/summary.json
    status: 200
  checked: '2026-08-13'

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