True Fit

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.

True Fit publishes 22 API contracts indexed on the APIs.io network, including Analytics API, Auth API, Bra Sizes API, and 19 more. Tagged areas include Company, Fit and Sizing, Apparel, Footwear, and Retail.

The True Fit catalog on APIs.io includes 1 Spectral governance ruleset.

True Fit’s developer surface includes pricing, authentication, documentation, API reference, getting-started guide, support, engineering blog, and 32 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

45.1/100 developing ▬ flat Agent 29/100 agent ready Front door AI 5/6 prominent Heartbeat 70/100 slowing saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

AccessEnterprise

2 published contracts 3 Agent Skills

CompanyFit and SizingApparel Footwear Retail E-Commerce Recommendations Personalization Artificial Intelligence Agentic Commerce MCP

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 45.1/100 · developing

Contract Quality 8.2 / 19

Developer Ergonomics 9.4 / 15

Access Clarity 5.1 / 15

Operational Transparency 2.3 / 10

Contract Governance 1.6 / 9

Discoverability 5.5 / 8

Regulatory Posture 4.1 / 15

Create-or-Update Ergonomics 1.1 / 10

Agent readiness — 29/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 5 / 5

Well-Known Catalog 0 / 4

Consent & Bot Identity 3 / 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

Pagination 0 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

Regulatory Posture applies to this provider. Its tags matched the Horizontal (data, software, accessibility, platform) 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 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.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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Agent readiness — checks not met, largest first (exact, from this profile):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

7 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 43.7 — up to +14.1 composite points
Access Clarity scores 34.2 — up to +13.2 composite points
Operational Transparency scores 23.7 — up to +9.9 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/true-fit/apis.yml: open an issue on github.com/api-evangelist/true-fit to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Fashion & Apparel (apparel, footwear, textiles)	undeclared	-	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 2

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

Model Context Protocol (MCP)

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

OpenAPI

measured — observed by APIs.io (published)

APIs 22

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

True Fit 360 Member View API

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 f...

True Fit Analytics API

Provide session information for more advanced reporting.

True Fit Auth API

Endpoints to allow saving and logging in to a True Fit account.

True Fit Bra Sizes API

The bra sizes that are available to choose from for the bra size measurement on a Women's profile.

True Fit Brands API

The brands that are available to choose from when entering a reference closet item.

True Fit Checkout API

An endpoint for tracking checkout events.

True Fit Closet API

Information about the profile's closet.

True Fit Discovery Recommendation API

Retrieve True Fit powered product recommendations for the shopper profile.

True Fit Recommendation API

Retrieve True Fit powered size recommendations for a profile.

True Fit Identity API

Establishing a True Fit user for one of your users.

True Fit Inseams API

The available inseam lengths to choose from for the inseam measurement on a profile.

True Fit Measurements API

Body measurements attached to a profile.

True Fit Normalized Sizes API

Retrieve normalized sizes for the shopper profile.

True Fit Product Ratings API

An endpoint for rating discovery recommendations.

True Fit Products API

The products available at a store.

True Fit Profile API

Information about the person being shopped for.

True Fit Profiles API

Creating and managing fit profiles belonging to a partner user.

True Fit Recommendations API

Size recommendations and general fit guidance for retailer products.

True Fit Sizes API

The sizes that are available to choose from when entering a reference closet item.

True Fit Sleeve Lengths API

The available sleeve lengths to choose from for the sleeve length measurement on a profile.

True Fit Style Attributes API

The style attributes available for particular ageGroup, gender, category and optional class combination.

True Fit Token API

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 r...

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Open Collections 21

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

True Fit - Consumer Analytics API

OPEN COLLECTION

True Fit - Consumer Auth API

OPEN COLLECTION

True Fit - Consumer Bra Sizes API

OPEN COLLECTION

True Fit - Consumer Brands API

OPEN COLLECTION

True Fit - Consumer Checkout API

OPEN COLLECTION

True Fit Closet API

OPEN COLLECTION

True Fit - Consumer Discovery Recommendation API

OPEN COLLECTION

True Fit - Consumer Fit Recommendation API

OPEN COLLECTION

True Fit Partner Identity API

OPEN COLLECTION

True Fit - Consumer Inseams API

OPEN COLLECTION

True Fit Partner Measurements API

OPEN COLLECTION

True Fit - Consumer Normalized Sizes API

OPEN COLLECTION

True Fit - Consumer Product Ratings API

OPEN COLLECTION

True Fit - Consumer Products API

OPEN COLLECTION

True Fit - Consumer Profile API

OPEN COLLECTION

True Fit Partner Profiles API

OPEN COLLECTION

True Fit Partner Recommendations API

OPEN COLLECTION

True Fit - Consumer Sizes API

OPEN COLLECTION

True Fit - Consumer Sleeve Lengths API

OPEN COLLECTION

True Fit - Consumer Style Attributes API

OPEN COLLECTION

True Fit - Consumer Token API

OPEN COLLECTION

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Agent Skills 3

Packaged agent skills for driving this provider's APIs from an AI assistant.

Answer "does this run small?" with no shopper profile

AGENT SKILL

Manage a shopper's fit profile, measurements and closet

AGENT SKILL

Size a shopper for a retailer product

AGENT SKILL

True Fit API pricing

Pricing Plans 1

Published pricing tiers and plan structures.

True Fit Plans Pricing

0 plans

PLANS

Service Levels 1

Uptime the provider promises or reports, as SLA4OAI. Read from its own pages; APIs.io runs no monitors.

True Fit

SLA

FinOps 1

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

True Fit Finops

FINOPS

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

True Fit API Rules

58 rules · 43 errors 14 warnings 1 info

SPECTRAL

OpenAPI Overlays 2

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

True Fit Consumer Api Overlay

3 actions · update · true-fit-consumer-api-openapi.json

DERIVED

True Fit Partner Api Overlay

3 actions · update · true-fit-partner-api-openapi.json

DERIVED

Security Posture 2

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

True Fit Authentication

http · 1 scheme

SECURITY

True Fit Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

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

True Fit Agentic Access

59 operations · 25 acting · 2 human-in-the-loop

59 operations · 25 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

Sandbox

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

TechnicalSpecification

TechnicalSpecification

Agent Surfaces 5

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

X-MCPServerCandidate

AgentSkill

LLMsTxt

LLMsTxt

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Lifecycle

Conventions

Conformance

ErrorCatalog

ErrorCodes

Components

DataModel

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

ToolCrosswalk

ToolCrosswalk

Access & Security 4

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Compliance

Compliance

PrivacyDisclosures

PrivacyDisclosures

Operate 4

Status, limits, changes, and where to get help

Support

StatusPage

ChangeLog

ChangeLog

Commercial 4

Pricing, plans, and the legal terms of use

Pricing

Plans

TermsOfService

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Other 4

Properties that don't map to a standard resource type

Overlay

Marketplace

CDN

ContentSignal

Source (apis.yml)

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.
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: enterprise
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Enterprise
  confidence: medium
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
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: '0.23'
created: '2026-08-05'
modified: '2026-09-16'
x-docs-platform: readme
x-docs-platform-confidence: high
x-docs-platform-checked: 2026-10-17
tags:
- Company
- Fit and Sizing
- Apparel
- Footwear
- Retail
- E-Commerce
- Recommendations
- Personalization
- Artificial Intelligence
- Agentic Commerce
- MCP
tags_raw:
- 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:
  - Authentication
  tags_raw:
  - 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 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:
  - Product
  tags_raw:
  - 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:
  - Profiles
  tags_raw:
  - 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:
  - Tokens
  tags_raw:
  - 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: Pricing
  url: https://www.truefit.com/
- type: Plans
  url: plans/true-fit-plans-pricing.yml
- 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: X-MCPServerCandidate
  url: mcp/true-fit-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- 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

True Fit API — frequently asked questions

Does True Fit have an API?

Yes. APIs.io lists 22 APIs from True Fit, including True Fit 360 Member View API, True Fit Analytics API and True Fit Auth API, and 19 more.

Is there an OpenAPI specification for the True Fit API?

Yes. APIs.io indexes 21 OpenAPI specifications for True Fit, each linked for download from this page.

How do I authenticate with the True Fit API?

True Fit uses bearer-token authentication (http · 1 scheme). The details are profiled on APIs.io as True Fit Authentication.

Is the True Fit API ready for AI agents?

True Fit has a Kin Score of 45.1 out of 100 (developing) and an Agent Readiness score of 29.1 (agent-ready), scored by API Evangelist on 2026-11-06.

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