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.

🌐 Visit website 📡 Source on GitHub
39.1/100 thin ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
9 APIs
LoyaltyRewardsReferralsE-commercePointsCustomer RetentionShopify

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 39.1/100 · thin
Contract Quality 15.7 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 7.9 / 20
Operational Transparency 4.1 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 34/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 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
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. 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. Want it done for you? Prioritized profiling — $2,500 →

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 1

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

Smile.io REST API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Smile Io Plans Pricing

6 plans

PLANS

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.

Smile Io Finops

FINOPS

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

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

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.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  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
created: '2026-07-10'
modified: '2026-07-10'
specificationVersion: '0.19'
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