Yeeld

Yeeld builds credit-card surcharging infrastructure for merchants and platforms across the United States and Canada, and provides payments consulting and development services. The Yeeld Surcharging API is a real-time rules engine: a caller passes a transaction amount and payment-method details, and Yeeld returns the surcharge that jurisdictional law and Visa, Mastercard, American Express and Discover rules permit, or zero where surcharging is prohibited. Yeeld also ships a Stripe App Marketplace app for Stripe Checkout and Payment Links, and YeeldPay, a no-code branded hosted checkout. Founded by ex-Stripe staff and headquartered in Chicago, Illinois.

Yeeld publishes 1 API on the APIs.io network. Tagged areas include Payments, Surcharging, Credit Cards, Compliance, and Stripe.

Yeeld’s developer surface includes documentation, getting-started guide, support, pricing, signup flow, engineering blog, and 10 more developer resources.

🌐 Visit website 📡 Source on GitHub

33.4/100 thin ▬ flat Agent 5/100 human only saas Full breakdown ↓
scored 2026-09-05 · rubric v0.18.3

1 APIs

PaymentsSurchargingCredit Cards Compliance Stripe Checkout FintechPayment Consulting

Kin Score

Kin Score How this is scored →
scored 2026-09-05 · rubric v0.18.3

Composite quality — 33.4/100 · thin

Contract Quality 0.0 / 21

Developer Ergonomics 9.7 / 17

Access Clarity 8.9 / 17

Operational Transparency 0.0 / 11

Contract Governance 1.9 / 10

Discoverability 5.8 / 9

Regulatory Posture 7.3 / 15

Agent readiness — 5/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 0 / 8

Request/Response Examples 0 / 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

Delegated User Identity 0 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Payments 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.

The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.

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 github.com/api-evangelist/yeeld: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 1

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

Rate Limits 1

Documented rate limits and quota policies.

Yeeld Rate Limits

0 limits

RATE LIMITS

FinOps 1

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

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

GettingStarted

GettingStarted

SignUp

SignUp

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt

LLMsTxt

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Components

Components

Build 1

SDKs, sample code, and the tooling you integrate with

Packages

Packages

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 4

The organization behind the API

Website

Website

Blog

Blog

BlogRSS

BlogRSS

LinkedIn

Source (apis.yml)

aid: yeeld
name: Yeeld
description: 'Yeeld builds credit-card surcharging infrastructure for merchants and platforms across the United States and
  Canada, and provides payments consulting and development services. The Yeeld Surcharging API is a real-time rules engine:
  a caller passes a transaction amount and payment-method details, and Yeeld returns the surcharge that jurisdictional law
  and Visa, Mastercard, American Express and Discover rules permit, or zero where surcharging is prohibited. Yeeld also ships
  a Stripe App Marketplace app for Stripe Checkout and Payment Links, and YeeldPay, a no-code branded hosted checkout. Founded
  by ex-Stripe staff and headquartered in Chicago, Illinois.'
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: usage-based
  onboarding: contact-sales
  trial: false
  try_now: false
  public: false
  label: Contact Sales
  confidence: high
  source:
  - plans
  - docs
  generated: '2026-08-28'
  method: searched
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/yeeld.png
tags:
- Payments
- Surcharging
- Credit Cards
- Compliance
- Stripe
- Checkout
- Fintech
- Payment Consulting
created: '2025-02-21'
modified: '2026-08-28'
url: https://raw.githubusercontent.com/api-evangelist/yeeld/refs/heads/main/apis.yml
specificationVersion: '0.23'
common:
- type: Website
  url: https://theyeeld.com/
- type: DeveloperPortal
  url: https://docs.theyeeld.com/
- type: Documentation
  url: https://docs.theyeeld.com/
- type: GettingStarted
  url: https://docs.theyeeld.com/getting-started/overview
- type: Support
  url: https://theyeeld.com/contact
- type: Pricing
  url: https://theyeeld.com/products/yeeld-surcharging-for-stripe
- type: SignUp
  url: https://theyeeld.com/yeeld-pay-signup
- type: TermsOfService
  url: https://theyeeld.com/legal/terms-of-use
- type: PrivacyPolicy
  url: https://theyeeld.com/legal/privacy-policy
- type: Blog
  url: https://theyeeld.com/blog
- type: BlogRSS
  url: https://theyeeld.com/feed/
- type: LinkedIn
  url: https://www.linkedin.com/company/theyeeld
- type: DomainSecurity
  url: security/yeeld-domain-security.yml
- type: LLMsTxt
  url: llms/yeeld-llms.txt
- type: Packages
  url: packages/yeeld-packages.yml
- type: Components
  url: components/yeeld-components.yml
apis:
- aid: yeeld:yeeld
  name: Yeeld Surcharging API
  description: Real-time surcharge calculation API. The caller sends a base transaction amount and payment-method details
    (card brand and type) and receives the permitted surcharge amount, evaluated against U.S. state and Canadian provincial
    statute, card-network caps, and the merchant's own configuration. Platforms pass a Yeeld-Account header to scope the calculation
    to a sub-merchant. Yeeld does not process payments or store card data. The endpoint reference and sandbox are gated behind
    a contact-sales form.
  humanURL: https://docs.theyeeld.com/integrations
  baseURL: https://api.theyeeld.com
  tags:
  - Payments
  - Surcharging
  - Compliance
  properties:
  - type: Documentation
    url: https://docs.theyeeld.com/
  - type: Authentication
    url: authentication/yeeld-authentication.yml
  - type: Conventions
    url: conventions/yeeld-conventions.yml
  - type: RateLimits
    url: rate-limits/yeeld-rate-limits.yml
  - type: Plans
    url: plans/yeeld-plans-pricing.yml
  - type: Sandbox
    url: sandbox/yeeld-sandbox.yml
  - type: Lifecycle
    url: lifecycle/yeeld-lifecycle.yml
  - type: Conformance
    url: conformance/yeeld-conformance.yml
  - type: FinOps
    url: finops/yeeld-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-28'
  status: enriched
  artifacts_added: 9
  pass: local-v1
x-coverage:
  state: covered
  reason: none
  detail: 'STEP 0b contract discovery beat the prior round''s read of this company. Two hosts the profile never carried resolve
    and answer: docs.theyeeld.com serves seven server-rendered, crawlable documentation pages (integration models, merchant
    and platform guides, compliance rules), and api.theyeeld.com is a live first-party Fastify JSON API on Yeeld''s own AWS
    load balancer. What remains gated is narrower than "no API": Yeeld''s own FAQ on theyeeld.com/products/surcharging-api
    answers "Is there a sandbox or API docs? Yes. Contact us to get access.", so the endpoint reference, request/response
    schemas and sandbox sit behind a contact-sales form while the integration semantics, auth model (API key plus a Yeeld-Account
    tenant header) and compliance rules are public.'
  evidence:
  - url: https://docs.theyeeld.com/integrations
    status: 200
  - url: https://api.theyeeld.com/
    status: 404
  - url: https://theyeeld.com/products/surcharging-api
    status: 200
  - url: https://api.theyeeld.com/openapi.json
    status: 404
  - url: https://theyeeld.com/llms.txt
    status: 404
  checked: '2026-08-28'

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