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.
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles True Fit the way a machine reads it — 48 machine-readable artifacts across 22 APIs, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — True Fit scores 45.3/100 (developing), with a separate agent-readiness read of 44/100 (agent ready). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Put this on your own site. The badge is drawn live from True Fit's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
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<a href="https://providers.apievangelist.com/providers/true-fit/"
title="True Fit on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/true-fit.svg"
alt="True Fit Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/true-fit/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/true-fit/"
title="True Fit on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/true-fit/card.svg"
alt="True Fit Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile True Fit
Each block below is one kind of artifact we hold for True Fit. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
APIs 22
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
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 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...
Scroll within the panel for all 22 ·
Open Collections 22
Open, tool-agnostic collections carry the same runnable value as Postman without locking you to one client — the portable, forkable form of the same exercise.
Open, tool-agnostic API collections (OpenAPI-derived and Bruno).
API Collection
OPEN COLLECTIONTrue Fit - Consumer Analytics API
OPEN COLLECTIONTrue Fit - Consumer Auth API
OPEN COLLECTIONTrue Fit - Consumer Bra Sizes API
OPEN COLLECTIONTrue Fit - Consumer Brands API
OPEN COLLECTIONTrue Fit - Consumer Checkout API
OPEN COLLECTIONTrue Fit Closet API
OPEN COLLECTIONTrue Fit - Consumer Discovery Recommendation API
OPEN COLLECTIONTrue Fit - Consumer Fit Recommendation API
OPEN COLLECTIONTrue Fit Partner Identity API
OPEN COLLECTIONTrue Fit - Consumer Inseams API
OPEN COLLECTIONTrue Fit Partner Measurements API
OPEN COLLECTIONTrue Fit - Consumer Normalized Sizes API
OPEN COLLECTIONTrue Fit - Consumer Product Ratings API
OPEN COLLECTIONTrue Fit - Consumer Products API
OPEN COLLECTIONTrue Fit - Consumer Profile API
OPEN COLLECTIONTrue Fit Partner Profiles API
OPEN COLLECTIONTrue Fit Partner Recommendations API
OPEN COLLECTIONTrue Fit - Consumer Sizes API
OPEN COLLECTIONTrue Fit - Consumer Sleeve Lengths API
OPEN COLLECTIONTrue Fit - Consumer Style Attributes API
OPEN COLLECTIONTrue Fit - Consumer Token API
OPEN COLLECTIONScroll within the panel for all 22 ·
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
true-fit-mcp.yml
MCP SERVERSecurity Posture 2
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for True Fit — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Get Started 3
Portal, sign-up, and the first successful call
Documentation 3
Reference material describing how the API behaves
Agent Surfaces 5
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 7
Pagination, idempotency, versioning, errors, and events
Scroll within the panel for all 7 ·
Build 3
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 4
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
Other 4
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/true-fit · machine-readable index on apis.io
This is an independent, third-party profile of True Fit, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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