Smile.io website screenshot

Smile.io

Smile.io is a loyalty, rewards, and referrals platform for e-commerce brands (widely used on Shopify). Merchants run points programs, referral programs, and VIP tiers, and integrate them programmatically through the Smile.io REST API (base https://api.smile.io/v1). The REST API exposes customers and customer identities, points transactions and settings, points products and purchases, earning rules, rewards and reward fulfillments, VIP tiers, and custom activities. It uses resource-oriented URLs, returns JSON, and is authenticated with an HTTP Bearer token (a merchant API key or an app OAuth access token). REST API access is gated to the Plus and Enterprise plans.

Smile.io publishes 9 APIs on the APIs.io network, including Activities API, Customer Identities API, Customers API, and 6 more. Tagged areas include Loyalty, Rewards, Referrals, E-Commerce, and Points.

Smile.io’s developer surface includes authentication, documentation, and 7 more developer resources.

40.1/100 developing ▬ flat Agent 22/100 agent aware saas Full breakdown ↓
scored 2026-09-14 · rubric v0.22.0
AccessFreemiumSelf serve⚡ Free to try
1 APIs
LoyaltyRewardsReferralsE-CommercePointsCustomer RetentionShopify

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-14 · rubric v0.22.0
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
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/smile-io: 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 9

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

Smile.io Activities API

Record custom customer activities that can earn points.

Smile.io Customer Identities API

Create or update a customer from an external system identity.

Smile.io Customers API

Loyalty program members and their point balances and state.

Smile.io Earning Rules API

Rules that define how customers earn points.

Smile.io Points Products API

Redeemable products a customer can purchase with points.

Smile.io Points Settings API

Program-level points configuration (currency name, ratios).

Smile.io Points Transactions API

Point balance changes - earn, redeem, adjust - for a customer.

Smile.io Reward Fulfillments API

Fulfillment records for rewards a customer has redeemed.

Smile.io VIP Tiers API

VIP program tiers and their thresholds and perks.

Scroll for all 9

Open Collections 11

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

Smile.io REST API

OPEN COLLECTION

Scroll for all 11

Pricing Plans 1

Published pricing tiers and plan structures.

Rate Limits 1

Documented rate limits and quota policies.

Smile Io Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Security Posture 2

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

Smile Io Authentication

http · 1 scheme

SECURITY

Smile Io Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Smile Io Agentic Access

14 operations · 4 acting

14 operations · 4 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

Access & Security 2

Authentication, authorization, and security posture

Operate 1

Status, limits, changes, and where to get help

Commercial 2

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: smile-io
url: https://raw.githubusercontent.com/api-evangelist/smile-io/refs/heads/main/apis.yml
name: Smile.io
kind: company
description: Smile.io is a loyalty, rewards, and referrals platform for e-commerce brands (widely used on Shopify). Merchants
  run points programs, referral programs, and VIP tiers, and integrate them programmatically through the Smile.io REST API
  (base https://api.smile.io/v1). The REST API exposes customers and customer identities, points transactions and settings,
  points products and purchases, earning rules, rewards and reward fulfillments, VIP tiers, and custom activities. It uses
  resource-oriented URLs, returns JSON, and is authenticated with an HTTP Bearer token (a merchant API key or an app OAuth
  access token). REST API access is gated to the Plus and Enterprise plans.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/smile-io.png
tags:
- Loyalty
- Rewards
- Referrals
- E-Commerce
- Points
- Customer Retention
- Shopify
tags_raw:
- Loyalty
- Rewards
- Referrals
- E-commerce
- Points
- Customer Retention
- Shopify
created: '2026-07-10'
modified: '2026-07-10'
specificationVersion: '0.23'
apis:
- aid: smile-io:smile-io-activities-api
  name: Smile.io Activities API
  description: Record custom customer activities that can earn points.
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - Activities
  properties:
  - type: OpenAPI
    url: openapi/smile-io-activities-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
- aid: smile-io:smile-io-customer-identities-api
  name: Smile.io Customer Identities API
  description: Create or update a customer from an external system identity.
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - Customer Identities
  properties:
  - type: OpenAPI
    url: openapi/smile-io-customer-identities-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
- aid: smile-io:smile-io-customers-api
  name: Smile.io Customers API
  description: Loyalty program members and their point balances and state.
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - Customers
  properties:
  - type: OpenAPI
    url: openapi/smile-io-customers-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
- aid: smile-io:smile-io-earning-rules-api
  name: Smile.io Earning Rules API
  description: Rules that define how customers earn points.
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - Earning Rules
  properties:
  - type: OpenAPI
    url: openapi/smile-io-earning-rules-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
- aid: smile-io:smile-io-points-products-api
  name: Smile.io Points Products API
  description: Redeemable products a customer can purchase with points.
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - Points Products
  properties:
  - type: OpenAPI
    url: openapi/smile-io-points-products-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
- aid: smile-io:smile-io-points-settings-api
  name: Smile.io Points Settings API
  description: Program-level points configuration (currency name, ratios).
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - Points Settings
  properties:
  - type: OpenAPI
    url: openapi/smile-io-points-settings-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
- aid: smile-io:smile-io-points-transactions-api
  name: Smile.io Points Transactions API
  description: Point balance changes - earn, redeem, adjust - for a customer.
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - Points Transactions
  properties:
  - type: OpenAPI
    url: openapi/smile-io-points-transactions-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
- aid: smile-io:smile-io-reward-fulfillments-api
  name: Smile.io Reward Fulfillments API
  description: Fulfillment records for rewards a customer has redeemed.
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - Reward Fulfillments
  properties:
  - type: OpenAPI
    url: openapi/smile-io-reward-fulfillments-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
- aid: smile-io:smile-io-vip-tiers-api
  name: Smile.io VIP Tiers API
  description: VIP program tiers and their thresholds and perks.
  humanURL: https://dev.smile.io/api/resources/customers/list-customers
  baseURL: https://api.smile.io/v1
  tags:
  - VIP Tiers
  properties:
  - type: OpenAPI
    url: openapi/smile-io-vip-tiers-api-openapi.yml
  - type: Documentation
    url: https://dev.smile.io/api/introduction
  - type: APIReference
    url: https://dev.smile.io/api/resources/customers/list-customers
  - type: PostmanCollection
    url: collections/smile-io.postman_collection.json
  - type: OpenCollection
    url: collections/smile-io.opencollection.json
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-transactions/points-transaction-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-transactions/list-points-transactions
  - type: Documentation
    url: https://dev.smile.io/api/resources/points-products/points-product-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/points-products/list-points-products
  - type: Documentation
    url: https://dev.smile.io/api/resources/reward-fulfillments/reward-fulfillment-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/reward-fulfillments/list-reward-fulfillments
  - type: Documentation
    url: https://dev.smile.io/api/resources/earning-rules/earning-rule-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/earning-rules/list-earning-rules
  - type: Documentation
    url: https://dev.smile.io/api/resources/vip-tiers/vip-tier-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/vip-tiers/list-vip-tiers
  - type: Documentation
    url: https://dev.smile.io/api/resources/activities/activity-object
  - type: APIReference
    url: https://dev.smile.io/api/resources/activities/create-activity
common:
- type: AgenticAccess
  url: agentic-access/smile-io-agentic-access.yml
- type: DomainSecurity
  url: security/smile-io-domain-security.yml
- type: Authentication
  url: authentication/smile-io-authentication.yml
- type: LinkedIn
  url: https://www.linkedin.com/company/smile-rewards
- type: Website
  url: https://smile.io
- type: Documentation
  url: https://dev.smile.io/api/introduction
- type: Plans
  url: plans/smile-io-plans-pricing.yml
- type: RateLimits
  url: rate-limits/smile-io-rate-limits.yml
- type: FinOps
  url: finops/smile-io-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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/smile-io"
All providers
curl "https://apis.io/api/v1/providers?limit=25"
Every operation they expose
curl "https://apis.io/api/v1/providers/smile-io/operations?limit=25"
How their score was established
curl "https://apis.io/api/v1/providers/smile-io/evidence"

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