Hang
Hang is a customer loyalty and engagement platform (originally a Paradigm-backed Web3 brand-loyalty company, now positioned as an AI-driven "autonomous marketing system") used by restaurant, beauty, apparel, and e-commerce brands to build and run tier-based membership and rewards programs. Its Partner API powers program memberships, points and activities, quests, challenges, puzzles, loot/mystery boxes, rewards and redemptions, balance/gift cards, tokenized rewards, program tiers and segments, plus point-of-sale integrations with Toast and Square and real-time webhooks. Brands can embed a white-labeled rewards portal or drive the whole loyalty experience programmatically through the REST API.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Hang the way a machine reads it — 42 machine-readable artifacts across 1 API, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Hang scores 51.8/100 (developing), with a separate agent-readiness read of 30/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance. Every facet and dimension name is a link: it opens that measurement's page on APIs.io, where the rating runs across the whole catalog — the exact checks that feed it, how every profiled provider distributes on it, and who is at the top of it.
Kin Score
How this is scored →scored 2026-09-08 · rubric v0.20.0
Put this on your own site. The badge is drawn live from Hang's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/hang/"
title="Hang on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/hang.svg"
alt="Hang Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/hang/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/hang/"
title="Hang on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/hang/card.svg"
alt="Hang Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Hang
Each block below is one kind of artifact we hold for Hang. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 18
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Hang Activities API
The Activities API from Hang — 2 operation(s) for activities.
Hang Loot Box Reward Choices API
The Loot Box Reward Choices API from Hang — 2 operation(s) for loot box reward choices.
Hang Loot box reward probabilities API
The Loot box reward probabilities API from Hang — 2 operation(s) for loot box reward probabilities.
Hang Loot Boxes API
The Loot Boxes API from Hang — 4 operation(s) for loot boxes.
Hang Member Actions API
The Member Actions API from Hang — 3 operation(s) for member actions.
Hang Memberships API
The Memberships API from Hang — 10 operation(s) for memberships.
Hang Program memberships API
The Program memberships API from Hang — 3 operation(s) for program memberships.
Hang Program Tiers API
The Program Tiers API from Hang — 1 operation(s) for program tiers.
Hang ProgramMembershipPuzzles API
The ProgramMembershipPuzzles API from Hang — 3 operation(s) for programmembershippuzzles.
Hang Programs API
The Programs API from Hang — 2 operation(s) for programs.
Hang Puzzles API
The Puzzles API from Hang — 4 operation(s) for puzzles.
Hang Quests API
The Quests API from Hang — 9 operation(s) for quests.
Hang Redemptions API
The Redemptions API from Hang — 4 operation(s) for redemptions.
Hang Rewards API
The Rewards API from Hang — 5 operation(s) for rewards.
Hang TokenizedRewards API
The TokenizedRewards API from Hang — 2 operation(s) for tokenizedrewards.
Hang Tokens API
The Tokens API from Hang — 7 operation(s) for tokens.
Hang Users API
The Users API from Hang — 1 operation(s) for users.
Hang Wallet Integration API
The Wallet Integration API from Hang — 2 operation(s) for wallet integration.
Scroll within the panel for all 18 ·
Open Collections 19
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONHang Partner API (params in:formData) Activities API
OPEN COLLECTIONHang Partner API (params in:formData) Activities Puzzles API
OPEN COLLECTIONHang Partner API (params in:formData) Activities Quests API
OPEN COLLECTIONHang Partner API (params in:formData) Activities Rewards API
OPEN COLLECTIONHang Partner API (params in:formData) Activities Tokens API
OPEN COLLECTIONHang Partner API (params in:formData) Activities Users API
OPEN COLLECTIONScroll within the panel for all 19 ·
Event Specifications 1
Not every API is request/response. AsyncAPI describes the event-driven and streaming side — the webhooks and channels — so the asynchronous half of the interface is documented the same way the synchronous half is.
AsyncAPI definitions for this provider's event-driven and streaming APIs.
Hang Webhooks
ASYNCAPISecurity Posture 4
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Hang — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 4
Portal, sign-up, and the first successful call
Documentation 2
Reference material describing how the API behaves
Agent Surfaces 3
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 7 ·
Access & Security 6
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 3
Pricing, plans, and the legal terms of use
Company 1
The organization behind the API
Other 1
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/hang · machine-readable index on apis.io
This is an independent, third-party profile of Hang, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
info@apievangelist.com
·
Read the full data-sourcing policy →
On a security or compliance team? Put security in the subject line and
you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.