Describe
Start with the contract your application already expects: operations, payloads, errors, and events.
Controlled environment for AI development
Run the whole loop.Break nothing real.
Mock every dependency around your backend so coding agents can integrate, retry, fail, and recover without touching production or spending against real providers.
DotDotMock guide Ready to model
What should your agent test?
Describe a dependency, a state change, or the failure you need to reproduce.
Dotis workingRead the dependency contract
Built deterministic state
Added timeout and retry
Verified the full trace
I built a stateful checkout mock with a deterministic timeout on the first attempt and success on retry. Nothing touched production.
OpenAPI contract Traffic trace Safe to rerun
A guided product demo · nothing is sent to a real provider
Mock third-party dependencies in development
Your app needs the dependency.Your dev loop doesn't.
Payment gateways, identity providers, CRMs, AI APIs, and partner services bring credentials, rate limits, costs, slow sandboxes, and unpredictable data into development. DotMock gives your application stable stand-ins shaped like the third-party APIs it already calls.
Replace a dependency in four moves
Keep your code. Swap the destination.
Your application still makes the same calls. In development, those calls go to a workspace you can shape, inspect, and reset.
Development routing controlled
01Your appunchanged client code
02DotMockprovider-shaped behavior
development.env
PROVIDER_BASE_URL=DOTMOCK_WORKSPACE_URLChange one environment value. Keep the integration path your application already uses.
Model
Add the behavior development needs—state, latency, retries, failures, streams, and webhook sequences.
Point
Swap the third-party base URL in your development or test configuration. Keep the application code.
Exercise
Run the real flow, inspect every exchange, and reset the dependency whenever you need a clean state.
Test the paths provider sandboxes skip
A 200 response is the beginning, not the mock.
Reproduce declined payments, expired tokens, rate limits, partial records, delayed webhooks, dropped streams, and recovery sequences on demand. Every developer and test run gets the behavior it needs without waiting for the provider to produce it.
Scenario library5 models
Card declined
402Expired token
401Rate limited
429Provider timeout
504Webhook delayed
eventExample failure modelPOST /v1/payments
402ResponseState changeInspect
{
"error": {
"code": "card_declined",
"message": "The card was declined.",
"retryable": false
}
} request matched payment.failed webhook queued
Mock the dependency you actually use
Keep the contract. Control the behavior.
Third-party systems are more than REST endpoints. Preserve the interface your client expects while taking control of its data, timing, state, and failures.
Explore the docsREST
Payments, identity, shipping, CRM, and any OpenAPI-shaped service.
GraphQL
Queries, mutations, subscriptions, variables, and resolver errors.
SOAP
WSDL/XSD contracts, XML envelopes, enterprise operations, and faults.
gRPC
Protobuf services, metadata, status codes, and streaming behavior.
LLM APIs
Provider-shaped responses, streaming, tool calls, usage, and failures.
Webhooks
Signed events, delayed delivery, retries, failure responses, and inspection.
Pricing
Start free. Upgrade when Dot or scale matters.
Free
For manually building and running one mock workspace.
$0
No card required
Included every month
$1 monthly usage included
All 12 full monthly grants are included
- One active workspace and no collaborators
- Manual authoring and isolated dry runs
- REST, GraphQL, SOAP, gRPC, LLM API, realtime, and webhook mocks
- No Dot copilot
Developer
For builders running agent loops against controlled dependencies.
$120/year
Two months free
Included every month
$12 monthly usage included
All 12 full monthly grants are included
- Three active workspaces and no collaborators
- Dot and provider-backed authoring are charged at provider cost × 5
- REST, realtime, GraphQL, SOAP, gRPC, LLM API, and webhook mocks
- State, failures, retries, traffic, and audit history
- 20 concurrent realtime connections
Team
For teams sharing contracts, scenarios, approvals, and audit history.
$490/year
Two months free
Included every month
$49 monthly usage included
All 12 full monthly grants are included
- 20 active workspaces and unlimited collaborators
- Shared Dot usage is charged at provider cost × 5
- Shared mock workspaces and deterministic scenarios
- Team approvals, traffic inspection, and audit history
- 100 concurrent realtime connections
Enterprise
For organizations evaluating custom controls, scale, and support.
Custom usage balance, workspaces, concurrency, unlimited collaborators, controls, support, and invoicing.
Contact salesReload when needed
Add $10 for $10. Purchased balance expires after 12 months. Auto-reload stays off until an admin enables it and sets a monthly cap.
How balance is used
Included balance expires at the next monthly grant and is used first. Purchased balances follow in earliest-expiry order. Usage balance is service credit with no cash or transfer value.
Standard interaction$0.10 / 1,000
LLM fixture$0.10 / 1M token-equivalents
Realtime$0.10 / 1,000 opens · $0.01 / 1,000 min · $0.001 / 1,000 messages
Webhook$0.10 / 1,000 triggers + $0.10 / 1,000 attempts
Proxy$0.20 / 1,000 interactions
Dot and provider-backed authoringProvider-reported cost × 5
Dollar calculator
Estimate usage before you run it.
Rates are deducted from one USD-denominated usage balance. Values are estimates; provider-backed work settles from reported cost.
Estimated charge
$1.00
Free balance
Within monthly balance
Developer balance
Within monthly balance
Team balance
Within monthly balance
Stop waiting on someone else's environment