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Description
ReqKey enhances the API you control by incorporating key features such as API key authentication, usage credits, rate limiting, and analytics for requests. It operates with your custom middleware, which performs a single verification call for each incoming request; in this process, ReqKey checks the validity of the caller’s key, subtracts a usage credit from the consumer's balance, imposes their rate limit, and logs the request along with details like status code, latency, and location. Notably, it does not act as a proxy, gateway, or require any DNS modifications, ensuring that it does not introduce additional latency into your critical operations. The average validation time is under 5 milliseconds, and the credit system is designed to be per consumer, meaning that issuing a second key to a customer does not increase their quota, keeping balances consistent across different regions. Additionally, ReqKey offers features such as shadow limits, managed overages, reusable plans, alerts for low credits, and detailed logs that can be filtered by endpoint, status, consumer, and time period. In terms of usage tracking and billing, ReqKey accurately meters and monitors usage while allowing you to retain control over your own billing infrastructure. It also provides software development kits (SDKs) for various programming languages including Python, Node.js, Go, Rust, PHP, .NET, and Java, along with framework adapters compatible with FastAPI, Express, Django, and more, ensuring seamless integration into your existing applications. By offering this comprehensive suite of functionalities, ReqKey empowers developers to manage their APIs with greater flexibility and insight.
Description
Solvimon replaces home-built billing code. It is one API-first system for usage metering, pricing, quote-to-cash, invoicing, payments, and revenue recognition.
Send raw events (tokens, API calls, agent actions) via API or ingest them from Snowflake, BigQuery, Redshift, S3, GCS, or Azure Blob Storage. Solvimon aggregates them against meters, prices them with whatever model you sell (seats, usage, credits, commits with overages, outcome-based, or all of it on one contract), and produces the invoice. Payments run through Stripe, Adyen, or Checkout.com, so no PSP lock-in.
Tooling: REST API, SDKs, frontend components, a CLI, and an MCP server for agent-driven billing operations. Sandbox available without a sales call.
The team previously built billing at Adyen (€1T+ processed volume). Pricing changes ship as configuration, not as a rewrite of your invoicing pipeline.
API Access
Has API
API Access
Has API
Screenshots View All
No images available
Integrations
Adyen
Amazon Redshift
Amazon S3
Attio
Avalara
Campfire
Claude
DATEV
Google Cloud Storage
Mailgun
Integrations
Adyen
Amazon Redshift
Amazon S3
Attio
Avalara
Campfire
Claude
DATEV
Google Cloud Storage
Mailgun
Pricing Details
$0 (free tier), $20/month Pro
Free Trial
Free Version
Pricing Details
Free for up to $3M
Solvimon prices as a percentage of billed revenue processed through the platform, plus payment processing fees. No event limits on any plan. Three plans: AI Essentials (free for the first $3M in billed revenue, then 0.4% of volume, for qualifying AI startups), Growth (starting at $2,500/month, adds quoting, multi-entity billing, and CRM/ERP integrations), and Enterprise (custom pricing, with custom rate cards, dedicated implementation engineer, and SLA-backed uptime). A read-only sandbox is available.
Free Trial
Free Version
Deployment
Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook
Deployment
Web-Based
On-Premises
iPhone App
iPad App
Android App
Windows
Mac
Linux
Chromebook
Customer Support
Business Hours
Live Rep (24/7)
Online Support
Customer Support
Business Hours
Live Rep (24/7)
Online Support
Types of Training
Training Docs
Webinars
Live Training (Online)
In Person
Types of Training
Training Docs
Webinars
Live Training (Online)
In Person
Vendor Details
Company Name
ReqKey
Founded
2026
Website
www.reqkey.com
Vendor Details
Company Name
Solvimon
Founded
2022
Country
Netherlands
Website
www.solvimon.com
Product Features
API Management
API Design
API Lifecycle Management
Access Control
Analytics
Dashboard
Developer Portal
Testing Management
Threat Protection
Traffic Control
Version Control
Product Features
Recurring Billing
Customer Portal
Deferred Billing
Discount Management
Dunning Management
Invoice History
Multi-Currency
Multi-Period Recurring Billing
Payment Processing
Recurring Donations
Subscription Billing
Subscription Management
Cancellation Management
Discount / Coupon Management
Dunning Management
Enrollment Management
Product Catalog
Recurring Billing
Revenue Recognition
Revenue Recovery Tools
Self Service Portal
Subscription Plan Management
Tax Management
Trial Management
Usage Tracking/Analytics