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About

ReqKey adds API key authentication, usage credits, rate limiting and request analytics to an API you own. Your own middleware makes a single verify call per incoming request: ReqKey validates the caller’s key, deducts a credit from that consumer’s pool, enforces their rate limit, and records the request with status code, latency and location. It never sits in front of your API — no proxy, no gateway, no DNS change — so it adds no hop to your critical path. Validation averages under 5ms. Credits pool per consumer rather than per key, so issuing a customer a second key does not hand them a second quota, and balances stay synced across regions. Also included: shadow limits, controlled overage, reusable plans, low-credit alerts, and per-request logs filterable by endpoint, status, consumer and time range. ReqKey meters and tracks usage — you keep your own billing stack. SDKs for Python, Node.js, Go, Rust, PHP, .NET and Java, with framework adapters for FastAPI, Express, Django, and more.

About

Waterfall is a credit infrastructure for platforms building on large language models, designed to turn AI usage into a business model without requiring teams to build their own billing stack. It gives each user, agent, or team a stablecoin-backed credit wallet, then meters every model call by provider, model, token count, and cost. Requests can be routed through the Waterfall Gateway or integrated through TypeScript and Python SDKs, with usage attributed to the correct wallet in real time. Each API call settles atomically against the wallet as it happens, so credits decrease, and revenue is recognized per request instead of through delayed invoices and manual reconciliation. Waterfall supports more than 300 models across providers such as OpenAI, Anthropic, DeepSeek, and xAI, allowing products to use multiple AI services while maintaining one accounting layer.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Software teams and SaaS companies that expose a public, partner-facing or customer-facing API and need to authenticate API keys, meter usage per customer, enforce rate limits and monitor API traffic.

Audience

AI platforms and startups that need to meter model usage, manage user wallets, and implement usage-based billing without building payment infrastructure

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$0 (free tier), $25/month Pro
Free tier; paid plans from $25/mo for 500K requests, with lower per-request pricing at higher volumes.
Free Version Supported
Free Trial Not Supported

Pricing

$20 per month
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

ReqKey
Founded: 2026
www.reqkey.com

Company Information

Waterfall
United States
www.waterfall.finance/

Alternatives

Alternatives

Gravitee

Gravitee

Gravitee.io
Directus

Directus

Monospace Inc

Categories

API Management Supported

Categories

AI Cost Management Supported

API Management Features

Access Control Supported
Analytics Supported
API Design Not Supported
API Lifecycle Management Supported
Dashboard Supported
Developer Portal Supported
Testing Management Not Supported
Threat Protection Not Supported
Traffic Control Supported
Version Control Not Supported

Integrations

Python Supported
TypeScript Supported
Anthropic Not Supported
Claude Not Supported
DeepSeek Not Supported
Gemini Not Supported
Go Supported
Grok Not Supported
Java Supported
Node.js Supported
OpenAI Not Supported
PHP Supported
Perplexity Not Supported
Rust Supported
Stripe Not Supported

Integrations

Python Supported
TypeScript Supported
Anthropic Supported
Claude Supported
DeepSeek Supported
Gemini Supported
Go Not Supported
Grok Supported
Java Not Supported
Node.js Not Supported
OpenAI Supported
PHP Not Supported
Perplexity Supported
Rust Not Supported
Stripe Supported
Claim ReqKey and update features and information
Claim ReqKey and update features and information
Claim Waterfall and update features and information
Claim Waterfall and update features and information