aid: true-fit
name: True Fit
description: 'True Fit Corporation is an AI-powered fit and sizing intelligence platform
  for apparel and footwear ecommerce. Its Fashion Genome dataset is built on roughly
  two decades of real purchase-and-return outcomes across 100M+ registered shoppers,
  60M unique products and 91K+ brands, and powers size recommendations, fit confidence
  scores, cross-brand size calibration and shopper fit profiles. True Fit ships as a
  product-detail-page JavaScript widget, a Shopify app, native iOS/Android/React Native
  SDKs, a documented Partner REST API and Consumer REST API, a 360 Member View data
  API, and a Fit Intelligence Layer exposed to AI agents over the Model Context Protocol.'
image: https://cdn.prod.website-files.com/64ee50f98275d03e3242bdef/69d410679088692a9df73243_256px%20webclip.png
url: https://raw.githubusercontent.com/api-evangelist/true-fit/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-05'
modified: '2026-08-05'
tags:
- Company
- Fit and Sizing
- Apparel
- Footwear
- Retail
- E-Commerce
- Recommendations
- Personalization
- Artificial Intelligence
- Agentic Commerce
- Model Context Protocol
apis:
- aid: true-fit:360-member-view-api
  name: True Fit 360 Member View API
  description: >-
    Two-endpoint data API that packages True Fit machine-learning assets for a retailer partner: a Metadata
    endpoint returning the descriptor of the current weekly 360 Member View file (client id, created timestamp,
    OpenPGP algorithm, SHA-256 of the plaintext) and a Content endpoint streaming the encrypted newline-delimited
    JSON file of shopper registration, likely-brand and likely-size predictions. Authorized with an "Authorization:
    sha256 API_KEY" header issued during onboarding.
  humanURL: https://techdocs.truefitcorp.com/docs/overview-2
  baseURL: https://true-360.truefitcorp.com/true-360/public/v1
  tags:
  - Data
  - Analytics
  - Personalization
  properties:
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-2
  - type: APIReference
    url: https://techdocs.truefitcorp.com/docs/supported-apis
- aid: true-fit:true-fit-analytics-api
  name: True Fit Analytics API
  description: Provide session information for more advanced reporting.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Analytics
  properties:
  - type: OpenAPI
    url: openapi/true-fit-analytics-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-auth-api
  name: True Fit Auth API
  description: Endpoints to allow saving and logging in to a True Fit account.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Auth
  properties:
  - type: OpenAPI
    url: openapi/true-fit-auth-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-bra-sizes-api
  name: True Fit Bra Sizes API
  description: >-
    The bra sizes that are available to choose from for the bra size measurement on a Women's profile.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Bra Sizes
  properties:
  - type: OpenAPI
    url: openapi/true-fit-bra-sizes-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-brands-api
  name: True Fit Brands API
  description: The brands that are available to choose from when entering a reference closet item.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Brands
  properties:
  - type: OpenAPI
    url: openapi/true-fit-brands-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-checkout-api
  name: True Fit Checkout API
  description: An endpoint for tracking checkout events.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Checkout
  properties:
  - type: OpenAPI
    url: openapi/true-fit-checkout-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-closet-api
  name: True Fit Closet API
  description: Information about the profile's closet.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Closet
  properties:
  - type: OpenAPI
    url: openapi/true-fit-closet-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-discovery-recommendation-api
  name: True Fit Discovery Recommendation API
  description: Retrieve True Fit powered product recommendations for the shopper profile.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Discovery Recommendation
  properties:
  - type: OpenAPI
    url: openapi/true-fit-discovery-recommendation-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-fit-recommendation-api
  name: True Fit Fit Recommendation API
  description: Retrieve True Fit powered size recommendations for a profile.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Fit Recommendation
  properties:
  - type: OpenAPI
    url: openapi/true-fit-fit-recommendation-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-identity-api
  name: True Fit Identity API
  description: Establishing a True Fit user for one of your users.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Identity
  properties:
  - type: OpenAPI
    url: openapi/true-fit-identity-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-inseams-api
  name: True Fit Inseams API
  description: The available inseam lengths to choose from for the inseam measurement on a profile.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Inseams
  properties:
  - type: OpenAPI
    url: openapi/true-fit-inseams-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-measurements-api
  name: True Fit Measurements API
  description: Body measurements attached to a profile.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Measurements
  properties:
  - type: OpenAPI
    url: openapi/true-fit-measurements-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-normalized-sizes-api
  name: True Fit Normalized Sizes API
  description: Retrieve normalized sizes for the shopper profile.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Normalized Sizes
  properties:
  - type: OpenAPI
    url: openapi/true-fit-normalized-sizes-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-product-ratings-api
  name: True Fit Product Ratings API
  description: An endpoint for rating discovery recommendations.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Product Ratings
  properties:
  - type: OpenAPI
    url: openapi/true-fit-product-ratings-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-products-api
  name: True Fit Products API
  description: The products available at a store.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Products
  properties:
  - type: OpenAPI
    url: openapi/true-fit-products-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-profile-api
  name: True Fit Profile API
  description: Information about the person being shopped for.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Profile
  properties:
  - type: OpenAPI
    url: openapi/true-fit-profile-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-profiles-api
  name: True Fit Profiles API
  description: Creating and managing fit profiles belonging to a partner user.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Profiles
  properties:
  - type: OpenAPI
    url: openapi/true-fit-profiles-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-recommendations-api
  name: True Fit Recommendations API
  description: Size recommendations and general fit guidance for retailer products.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Recommendations
  properties:
  - type: OpenAPI
    url: openapi/true-fit-recommendations-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-sizes-api
  name: True Fit Sizes API
  description: The sizes that are available to choose from when entering a reference closet item.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Sizes
  properties:
  - type: OpenAPI
    url: openapi/true-fit-sizes-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-sleeve-lengths-api
  name: True Fit Sleeve Lengths API
  description: >-
    The available sleeve lengths to choose from for the sleeve length measurement on a profile.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Sleeve Lengths
  properties:
  - type: OpenAPI
    url: openapi/true-fit-sleeve-lengths-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-style-attributes-api
  name: True Fit Style Attributes API
  description: >-
    The style attributes available for particular ageGroup, gender, category and optional class combination.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Style Attributes
  properties:
  - type: OpenAPI
    url: openapi/true-fit-style-attributes-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
- aid: true-fit:true-fit-token-api
  name: True Fit Token API
  description: >-
    A token is used to identify requests from a device and associate the requests with a session. As the
    user interacts with True Fit, the token will update. The most recent token returned by True Fit should
    be used on subsequent requests.
  humanURL: https://techdocs.truefitcorp.com/reference/partner-overview
  baseURL: https://partner.truefitcorp.com/api
  tags:
  - Token
  properties:
  - type: OpenAPI
    url: openapi/true-fit-token-api-openapi.yml
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: Documentation
    url: https://techdocs.truefitcorp.com/reference/partner-overview
  - type: APIReference
    url: https://techdocs.truefitcorp.com/reference
  - type: Documentation
    url: https://techdocs.truefitcorp.com/docs/overview-1
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Overlay
  url: overlays/true-fit-consumer-api-overlay.yaml
- type: AgenticAccess
  url: agentic-access/true-fit-agentic-access.yml
- type: DomainSecurity
  url: security/true-fit-domain-security.yml
- type: Authentication
  url: authentication/true-fit-authentication.yml
- type: Website
  url: https://www.truefit.com/
- type: DeveloperPortal
  url: https://techdocs.truefitcorp.com/
- type: Documentation
  url: https://techdocs.truefitcorp.com/docs
- type: APIReference
  url: https://techdocs.truefitcorp.com/reference
- type: GettingStarted
  url: https://techdocs.truefitcorp.com/docs/product-detail-page-integration
- type: Support
  url: https://www.truefit.com/support
- type: Blog
  url: https://www.truefit.com/blog
- type: TermsOfService
  url: https://www.truefit.com/terms-of-service
- type: PrivacyPolicy
  url: https://www.truefit.com/privacy-policy-and-choices
- type: Marketplace
  name: Shopify App Store listing
  url: https://apps.shopify.com/truefit
- type: TechnicalSpecification
  name: Fit Intelligence technical specification
  url: https://www.truefit.com/fit-intelligence-spec
- type: Compliance
  name: GDPR FAQ
  url: https://www.truefit.com/gdpr-faq
- type: PrivacyDisclosures
  name: US state privacy disclosures
  url: https://www.truefit.com/us-state-privacy-disclosures
- type: StatusPage
  url: https://status.truefit.com/
- type: ChangeLog
  url: https://techdocs.truefitcorp.com/changelog
- type: ChangeLog
  name: True Fit changelog (captured)
  url: changelog/true-fit-changelog.yml
- type: Lifecycle
  url: lifecycle/true-fit-lifecycle.yml
- type: Conventions
  url: conventions/true-fit-conventions.yml
- type: Conformance
  url: conformance/true-fit-conformance.yml
- type: ErrorCatalog
  url: errors/true-fit-problem-types.yml
- type: ErrorCodes
  url: errors/true-fit-error-codes.yml
- type: Packages
  url: packages/true-fit-packages.yml
- type: SDKs
  url: packages/true-fit-packages.yml
- type: CDN
  name: tf-integration.js loader
  url: https://cdn.truefitcorp.com/fitrec/global/js/tf-integration.js
- type: Components
  url: components/true-fit-components.yml
- type: Sandbox
  url: sandbox/true-fit-sandbox.yml
- type: DataModel
  url: data-model/true-fit-data-model.yml
- type: MCPServer
  url: mcp/true-fit-mcp.yml
- type: ToolCrosswalk
  url: mcp/true-fit-tool-crosswalk.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/true-fit-llms.txt
- type: LLMsTxt
  name: Integration documentation llms.txt
  url: llms/true-fit-techdocs-llms.txt
- type: ContentSignal
  name: robots.txt Content-Signal (ai-train=no, search=yes, ai-input=no)
  url: well-known/true-fit-robots.txt
x-enrichment:
  date: '2026-08-05'
  status: enriched
  artifacts_added: 27
  pass: local-v1