ByHeart

ByHeart is a US infant-nutrition company founded in 2016 that makes Whole Nutrition Infant Formula, marketed on the promise of better science, better ingredients, and better quality. It sells direct-to-consumer through a Shopify storefront at byheart.com as well as through retail. The company ran its own clinical program and built its own manufacturing. In November 2025 ByHeart recalled all batches after Clostridium botulinum contamination linked to infant-botulism cases and paused production pending FDA clearance to resume. ByHeart is a portfolio company of D1 Capital. It publishes no first-party developer API; its only machine-discoverable surface is the Shopify Customer Account API (OpenID Connect / OAuth 2.0) advertised under its domain.

ByHeart is profiled on the APIs.io network. Tagged areas include Company, Consumer, Infant Nutrition, Baby Formula, and Direct-to-Consumer.

ByHeart’s developer surface includes signup flow, support, authentication, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

27.0/100 emerging ▬ flat Agent 25/100 agent aware Full breakdown ↓
scored 2026-07-27 · rubric v0.5

AccessSelf serve

0 APIs 1 MCP Servers

CompanyConsumerInfant NutritionBaby FormulaDirect-to-ConsumerEcommerceHealthShopify

Kin Score

Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5

Composite quality — 27.0/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 4.8 / 20

Commercial Clarity 6.8 / 20

Operational Transparency 0.0 / 13

Governance 0.0 / 12

Discoverability 6.8 / 10

Agent readiness — 25/100 · agent aware

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 12 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 0 / 6

Agent Skills 0 / 5

Well-Known Catalog 4 / 4

Consent & Bot Identity 0 / 3

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/byheart: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

Scopes 1

OAuth scopes governing access to this provider's APIs.

Byheart Scopes

4 scopes · authorizationCode

4 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

SignUp

SignUp

Login

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

MCPServer

MCPServer

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Conformance

Conformance

Access & Security 3

Authentication, authorization, and security posture

Authentication

Authentication

OAuthScopes

OAuthScopes

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 1

The organization behind the API

Website

Website

Other 1

Properties that don't map to a standard resource type

OpenIDConnect

OpenIDConnect

Source (apis.yml)

aid: byheart
name: ByHeart
description: ByHeart is a US infant-nutrition company founded in 2016 that makes Whole Nutrition Infant Formula, marketed
  on the promise of better science, better ingredients, and better quality. It sells direct-to-consumer through a Shopify
  storefront at byheart.com as well as through retail. The company ran its own clinical program and built its own manufacturing.
  In November 2025 ByHeart recalled all batches after Clostridium botulinum contamination linked to infant-botulism cases
  and paused production pending FDA clearance to resume. ByHeart is a portfolio company of D1 Capital. It publishes no first-party
  developer API; its only machine-discoverable surface is the Shopify Customer Account API (OpenID Connect / OAuth 2.0) advertised
  under its domain.
url: https://raw.githubusercontent.com/api-evangelist/byheart/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- d1-capital
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://www.byheart.com/favicon.ico
tags:
- Company
- Consumer
- Infant Nutrition
- Baby Formula
- Direct-to-Consumer
- Ecommerce
- Health
- Shopify
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.byheart.com
- type: SignUp
  url: https://byheart.com/account/login
- type: Login
  url: https://byheart.com/account/login
- type: Support
  url: https://byheart.com/pages/byheart-faqs
- type: PrivacyPolicy
  url: https://byheart.com/pages/privacy-notice
- type: TermsOfService
  url: https://byheart.com/pages/terms-and-conditions
- type: WellKnown
  url: well-known/byheart-well-known.yml
- type: Authentication
  url: authentication/byheart-authentication.yml
- type: OpenIDConnect
  url: well-known/byheart-openid-configuration.json
- type: OAuthScopes
  url: scopes/byheart-scopes.yml
- type: Conformance
  url: conformance/byheart-conformance.yml
- type: MCPServer
  url: mcp/byheart-mcp.yml
- type: DomainSecurity
  url: security/byheart-domain-security.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence