Related Products
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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.
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About
Solvimon is billing infrastructure for software and AI companies. One system for metering, pricing, quoting, invoicing, payments, and revenue recognition.
You send usage events (tokens, API calls, agent actions), Solvimon meters them, applies your pricing model, and generates the invoice. Any model works: seats, usage, prepaid credits, volume commits with overages, outcome-based, or any combination on one contract. Mid-cycle changes, credit rollovers, and multi-year ramps run without custom code.
Payments are PSP-agnostic (Stripe, Adyen, Checkout.com) with multi-currency settlement and built-in tax, VAT, and GST. Bi-directional integrations sync your CRM, ERP, and data warehouse. Developers get a full API, SDKs, a CLI, and an MCP server so AI agents can operate billing directly.
Built by the team that ran billing at €1T+ volume at Adyen. Used by AI-native startups and large enterprises on the same platform. No event limits on any plan.
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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
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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
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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.
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Audience
Finance, RevOps, and engineering teams at software and AI companies selling usage-based, hybrid, or enterprise pricing. From Series A startups to IPO-ready enterprises.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Supported
24/7 Live Support
Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and Videos |
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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
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Pricing
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 Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Supported
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Training
Documentation
Supported
Webinars
Supported
Live Online
Supported
In Person
Supported
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Company InformationReqKey
Founded: 2026
www.reqkey.com
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Company InformationSolvimon
Founded: 2022
Netherlands
www.solvimon.com
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Alternatives |
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Categories |
Categories |
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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
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Integrations
Adyen
Not Supported
Amazon Redshift
Not Supported
Amazon S3
Not Supported
Anrok
Not Supported
Avalara
Not Supported
Azure Blob Storage
Not Supported
Campfire
Not Supported
Checkout.com
Not Supported
Exact
Not Supported
Go
Supported
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Integrations
Adyen
Supported
Amazon Redshift
Supported
Amazon S3
Supported
Anrok
Supported
Avalara
Supported
Azure Blob Storage
Supported
Campfire
Supported
Checkout.com
Supported
Exact
Supported
Go
Not Supported
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