Free
Free
Pricing lists Free at $0 with five free hours per month.
- Hours
- Five simulator hours per month across the catalog
- Scenarios
- One scenario per simulator without fault injection
Finding the possibilities
Rystic
● Identity checkedDeveloper tools · Vendor site 2026-10-04
Rystic provides local, stateful simulators of third-party APIs such as Stripe, Slack, GitHub, and Kalshi for agent training and testing. Each simulator preserves call history, supports seeded scenarios, and offers Pro features like fault injection and mutable state for offline CI and RL workflows.
- Category
- Developer tools
- Free access
- Free tier includes five simulator hours per month across the catalog with one scenario per simulator.
- API access
- Docs and CLI install paths describe programmatic control of simulators for local and CI usage.
Is Rystic right for you?
A good fit for
Teams building AI agents that must practice against realistic, stateful SaaS APIs without hitting production endpoints.
Before you choose
Free hours cap at five per month, and Pro bills $0.012 per simulator-minute after included credits.
Stateful simulators for software services
Rystic runs realistic API stand-ins locally so agents experience sequential state, seeded scenarios, and optional faults before teams deploy automations against production systems.
What it can do
Features & capabilities
Unknown is different from unavailable. Each fact carries its own evidence.
| Capability | Value | Evidence | Checked |
|---|---|---|---|
| Stateful simulators | Homepage emphasizes simulators where every call sees prior state on localhost. | Facts sourced | 2026-10-04 |
| Catalog | Marketing shows simulators for services including Slack, GitHub, Kalshi, and Stripe. | Facts sourced | 2026-10-04 |
| Pro pricing | Pricing page lists Pro at $89.99 per seat per month. | Facts sourced | 2026-10-04 |
Understand the total cost
Rystic pricing & plans
Pro
$89.99 /mo
Pricing publishes Pro at $89.99 per seat per month with $100 starting credit per seat.
- Overage
- $0.012 per simulator-minute after pooled usage
- Features
- Fault injection and settable simulator state
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Frequently asked questions
What is Rystic used for?
Rystic provides local, stateful simulators of third-party APIs such as Stripe, Slack, GitHub, and Kalshi for agent training and testing. Each simulator preserves call history, supports seeded scenarios, and offers Pro features like fault injection and mutable state for offline CI and RL workflows.
Does Rystic have a free plan?
Free tier includes five simulator hours per month across the catalog with one scenario per simulator.. This record lists ongoing free access; check the plan limits before starting.
How much does Rystic cost?
The listed monthly price is $89.99 USD at monthly billing. See the plan cards for entitlements, billing commitments and seat minimums.
Can I use Rystic through an API?
Docs and CLI install paths describe programmatic control of simulators for local and CI usage.. API access and subscription access may have different terms; consult the linked sources.
What should I check before choosing it?
Free hours cap at five per month, and Pro bills $0.012 per simulator-minute after included credits.
Price history
No retained pricing changes yet. A current price alone does not establish a historical trend.
How this profile is supported
Identity and profile
Reviewed vendor source
Read original source ↗Facts apply to the named version and check date. Send a sourced correction if something changed.