Related Products
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About
Flowtest is a visual platform for testing and continuously monitoring complex, multi-step API workflows. Teams can chain HTTP requests, capture values from responses, reuse them in later calls, and add assertions without writing scripts. Flows run manually, from CI/CD, or on schedules, with email, Slack, Telegram, and webhook alerts. Full request and response history, performance timings, secure secrets, and SLA reporting help engineering and QA teams catch API failures, race conditions, and downtime before users do.
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About
Twinbay is a hosted API simulation platform for developers testing AI agents and applications that call third-party services. Its stateful API twins can return configurable responses and model conditions such as payment declines, rate limits, expired credentials, email bounces, and paginated results. Teams direct compatible SDK requests to a twin, create isolated environments for test runs, inspect request logs, and use the environments in development or CI. The catalog includes twins for services such as GitHub, HubSpot, Plaid, Resend, Klaviyo, Linear, NetSuite, and QuickBooks. Twinbay offers a free plan with limits on twin usage and environment duration, pay-as-you-go twin-hour billing, and an Enterprise option. It is designed for engineers who need repeatable tests of agent behavior without relying on live production accounts or shared provider sandboxes.
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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
Backend developers, QA engineers, DevOps and SRE teams, API platform teams, and engineering organizations that need to test and monitor multi-step API workflows.
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Audience
Engineers at AI startups and larger companies who build agents that call third-party SaaS and fintech APIs, including CRM, accounting, payments, email, issue tracking, and developer tools.
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Supported
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API
Offers API
Not Supported
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API
Offers API
Not Supported
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Screenshots and VideosNo images available
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Screenshots and VideosNo images available
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Pricing
$29/month
Free Version
Supported
Free Trial
Not Supported
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Pricing
$1/twin-hour
A free plan includes up to 5 twins and 1-hour environments. Pay-as-you-go is $1 per twin-hour, billed by the second. Enterprise pricing is custom and annual. Eligible startups may receive $5,000 in credits over 24 months.
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
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationFlowtest
Founded: 2025
Spain
flowtest.io
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Company InformationTwinbay
Founded: 2024
United States
twinbay.ai
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Categories |
Categories |
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Integrations
Slack
Supported
Attio
Not Supported
BILL
Not Supported
Brex
Not Supported
HubSpot CRM
Not Supported
Klaviyo
Not Supported
Linear
Not Supported
Mercury
Not Supported
NetSuite
Not Supported
Notion
Not Supported
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Integrations
Slack
Supported
Attio
Supported
BILL
Supported
Brex
Supported
HubSpot CRM
Supported
Klaviyo
Supported
Linear
Supported
Mercury
Supported
NetSuite
Supported
Notion
Supported
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