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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

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.

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

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.

Support

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

Support

Phone Support Supported
24/7 Live Support 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

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

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 Supported
Live Online Supported
In Person Supported

Company Information

ReqKey
Founded: 2026
www.reqkey.com

Company Information

Solvimon
Founded: 2022
Netherlands
www.solvimon.com

Alternatives

Alternatives

Gravitee

Gravitee

Gravitee.io
SpryBill

SpryBill

Kilmist Corporation
Directus

Directus

Monospace Inc

Categories

API Management Supported

Categories

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

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
Google Cloud BigQuery Not Supported
Google Cloud Storage Not Supported
Mailgun Not Supported
Microsoft Dynamics 365 Not Supported
Python Supported
QuickBooks Enterprise Not Supported
Slack Not Supported
Snowflake Not Supported
Sphere Not Supported
Stripe Connect Not Supported

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
Google Cloud BigQuery Supported
Google Cloud Storage Supported
Mailgun Supported
Microsoft Dynamics 365 Supported
Python Not Supported
QuickBooks Enterprise Supported
Slack Supported
Snowflake Supported
Sphere Supported
Stripe Connect Supported
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