The Rainmaker Group Ventures (letitrain.com)

letitrain.com was the corporate domain of The Rainmaker Group Ventures, LLC, an Atlanta-based hospitality revenue and profit optimization software vendor serving hotels, resorts and casinos. Rainmaker sold an "intelligent profit platform" built around three products: guestrev for transient pricing and science-based revenue management, grouprev for group pricing and evaluation, and revintel for business intelligence and reporting, with a demand forecast marketed to operators including Caesars Entertainment, Atlantis Casino Resort Spa and Two Roads Hospitality. The company was backed by Norwest Venture Partners and ran offices in Atlanta, Las Vegas, Singapore and Dubai. The brand is retired: letitrain.com now serves a blanket redirect to Cendyn, the acquiring company, its TLS certificate expired in December 2022, and no Rainmaker developer portal, API reference or machine-readable specification was ever published or archived. This profile is retained as a historical, defunct-provider record with no active API surface.

The Rainmaker Group Ventures (letitrain.com) is profiled on the APIs.io network. Tagged areas include Company, Hospitality, Revenue Management, Hotels, and Casinos.

🌐 Visit website 📡 Source on GitHub
6.8/100 minimal ▬ flat Agent 0/100 human only Full breakdown ↓
scored 2026-07-27 · rubric v0.5
0 APIs
CompanyHospitalityRevenue ManagementHotelsCasinosBusiness IntelligencePricingDefunct

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-27 · rubric v0.5
Composite quality — 6.8/100 · minimal
Contract Quality 0.0 / 25
Developer Ergonomics 0.0 / 20
Commercial Clarity 0.0 / 20
Operational Transparency 0.0 / 13
Governance 0.0 / 12
Discoverability 6.8 / 10
Agent readiness — 0/100 · 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 0 / 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/letitrain: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Security Posture 1

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

Letitrain Domain Security

DMARC

SECURITY

Resources

Design & Contract 1

Pagination, idempotency, versioning, errors, and events

Lifecycle
Lifecycle

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Company 1

The organization behind the API

Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: letitrain
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/letitrain.png
name: The Rainmaker Group Ventures (letitrain.com)
description: 'letitrain.com was the corporate domain of The Rainmaker Group Ventures, LLC, an Atlanta-based hospitality revenue
  and profit optimization software vendor serving hotels, resorts and casinos. Rainmaker sold an "intelligent profit platform"
  built around three products: guestrev for transient pricing and science-based revenue management, grouprev for group pricing
  and evaluation, and revintel for business intelligence and reporting, with a demand forecast marketed to operators including
  Caesars Entertainment, Atlantis Casino Resort Spa and Two Roads Hospitality. The company was backed by Norwest Venture Partners
  and ran offices in Atlanta, Las Vegas, Singapore and Dubai. The brand is retired: letitrain.com now serves a blanket redirect
  to Cendyn, the acquiring company, its TLS certificate expired in December 2022, and no Rainmaker developer portal, API reference
  or machine-readable specification was ever published or archived. This profile is retained as a historical, defunct-provider
  record with no active API surface.'
url: https://raw.githubusercontent.com/api-evangelist/letitrain/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
x-tier: historical
x-tier-reason: defunct-no-api-surface
x-status: defunct
x-successor: cendyn
x-successor-url: https://www.cendyn.com/
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-19'
tags:
- Company
- Hospitality
- Revenue Management
- Hotels
- Casinos
- Business Intelligence
- Pricing
- Defunct
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://letitrain.com
- type: DomainSecurity
  url: security/letitrain-domain-security.yml
- type: Lifecycle
  url: lifecycle/letitrain-lifecycle.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence