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
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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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
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
$0 (free tier), $20/month Pro
Free Version
Free Trial
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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
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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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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Categories |
Categories |
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API Management Features
Access Control
Analytics
API Design
API Lifecycle Management
Dashboard
Developer Portal
Testing Management
Threat Protection
Traffic Control
Version Control
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Integrations
Amazon S3
Avalara
Campfire
Checkout.com
DATEV
Exact
Go
Google Cloud BigQuery
Google Cloud Storage
Metronome
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Integrations
Amazon S3
Avalara
Campfire
Checkout.com
DATEV
Exact
Go
Google Cloud BigQuery
Google Cloud Storage
Metronome
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