Coast (FKA VayU)

Coast (formerly VayU) is a US financial-technology company that consolidates fuel cards, fleet and field cards, corporate cards, expense management, and bill pay onto a single platform for fleet-based and field-service businesses across HVAC, construction, transportation, and landscaping. Coast pairs Visa card issuing with spend controls, fraud prevention, rewards, and real-time reporting, and integrates with telematics (Samsara, Geotab, Verizon Connect), fleet management (Fleetio, Whip Around), and accounting (QuickBooks, NetSuite, Sage Intacct) systems. Coast exposes a v2 REST API and an embedded-widget SDK through a Kong-hosted developer portal. Backed by ICONIQ Growth, Accel, Insight Partners, and Bessemer Venture Partners.

Coast (FKA VayU) publishes 1 API on the APIs.io network. Tagged areas include Company, Payments, Fleet Cards, Fuel Cards, and Corporate Cards.

Coast (FKA VayU)’s developer surface includes documentation, API reference, pricing, signup flow, support, engineering blog, and 14 more developer resources.

🌐 Visit website 📡 Source on GitHub

28.1/100 emerging ▬ flat Agent 4/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5

1 APIs

CompanyPaymentsFleet CardsFuel CardsCorporate CardsExpense ManagementFintechBill Pay

Kin Score

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

Composite quality — 28.1/100 · emerging

Contract Quality 0.0 / 25

Developer Ergonomics 7.4 / 20

Commercial Clarity 8.9 / 20

Operational Transparency 2.1 / 13

Governance 0.0 / 12

Discoverability 9.3 / 10

Agent readiness — 4/100 · human only

Machine-Readable Contract 0 / 18

Agentic Access Contract 0 / 15

MCP Server 0 / 12

Machine-Readable Auth 0 / 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/coast-fka-vayu: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

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

Get Started 3

Portal, sign-up, and the first successful call

DeveloperPortal

DeveloperPortal

SignUp

SignUp

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

LLMsTxt

LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Lifecycle

Lifecycle

Components

Components

Build 2

SDKs, sample code, and the tooling you integrate with

Packages

Packages

SDKs

SDKs

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Operate 3

Status, limits, changes, and where to get help

Support

Support

HelpCenter

HelpCenter

StatusPage

StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing

Pricing

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: coast-fka-vayu
name: Coast (FKA VayU)
description: Coast (formerly VayU) is a US financial-technology company that consolidates fuel cards, fleet and field cards,
  corporate cards, expense management, and bill pay onto a single platform for fleet-based and field-service businesses across
  HVAC, construction, transportation, and landscaping. Coast pairs Visa card issuing with spend controls, fraud prevention,
  rewards, and real-time reporting, and integrates with telematics (Samsara, Geotab, Verizon Connect), fleet management (Fleetio,
  Whip Around), and accounting (QuickBooks, NetSuite, Sage Intacct) systems. Coast exposes a v2 REST API and an embedded-widget
  SDK through a Kong-hosted developer portal. Backed by ICONIQ Growth, Accel, Insight Partners, and Bessemer Venture Partners.
url: https://raw.githubusercontent.com/api-evangelist/coast-fka-vayu/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: stub
x-tier-reason: portfolio-lead
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
image: https://coastpay.com/og.png
tags:
- Company
- Payments
- Fleet Cards
- Fuel Cards
- Corporate Cards
- Expense Management
- Fintech
- Bill Pay
apis:
- name: Coast API v2
  description: Coast's v2 REST API for programmatically managing fuel/fleet cards, corporate cards, spend controls, transactions,
    and expense data. Documented via a Redocly reference and a Kong developer portal; access is gated behind OIDC login.
  humanURL: https://developers.coastpay.com/
  baseURL: https://api.coastpay.com/v2
  properties:
  - type: Documentation
    url: https://docs.coastpay.com/
  - type: APIReference
    url: https://docs.coastpay.com/openapi/v2/coast-api
  - type: DeveloperPortal
    url: https://developers.coastpay.com/
  tags:
  - Payments
  - Fleet Cards
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/coast-fka-vayu-domain-security.yml
- type: Website
  url: https://coastpay.com/
- type: DeveloperPortal
  url: https://developers.coastpay.com/
- type: Documentation
  url: https://docs.coastpay.com/
- type: APIReference
  url: https://docs.coastpay.com/openapi/v2/coast-api
- type: Pricing
  url: https://coastpay.com/pricing/
- type: SignUp
  url: https://portal.coastpay.com/auth
- type: Login
  url: https://portal.coastpay.com/auth
- type: Support
  url: https://coastpay.com/customer-service/
- type: HelpCenter
  url: https://coastpay.com/faqs/
- type: Blog
  url: https://coastpay.com/resources/blog/
- type: TermsOfService
  url: https://coastpay.com/legal/terms-of-use/
- type: PrivacyPolicy
  url: https://coastpay.com/legal/privacy-policy/
- type: StatusPage
  url: https://status.coastpay.com/
- type: Lifecycle
  url: lifecycle/coast-fka-vayu-lifecycle.yml
- type: Integrations
  url: https://coastpay.com/integrations/
- type: Packages
  url: packages/coast-fka-vayu-packages.yml
- type: SDKs
  url: packages/coast-fka-vayu-packages.yml
- type: Components
  url: components/coast-fka-vayu-components.yml
- type: WellKnown
  url: well-known/coast-fka-vayu-well-known.yml
- type: LLMsTxt
  url: llms/coast-fka-vayu-llms.txt
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence