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DotMock

Run the whole loop. Break nothing real.·dotmock.com

DotMock is a controlled, stateful mock environment for REST, GraphQL, SOAP, gRPC, LLM APIs, realtime, and webhook workflows, built around a backend rather than replacing it. It lets developers and coding agents simulate third-party dependencies — including failures, retries, timeouts, and recovery — without touching production or spending against real providers. It is accessed via a web dashboard, a CLI, and an MCP integration for agent-driven workflows.

What it's for

Model checkout with a timeout and retryCreate a stateful user signup flowMock an OpenAI-style stream with tool callsRecover from a simulated upstream outageComplete a stateful checkout flow with webhooksTest an LLM tool-call loopProve authentication failure and recovery pathsReproduce declined payments, expired tokens, rate limits, and delayed webhooks

Features 17

Conditional response rules for success, validation, rate limits, and faults
Deterministic request matching by operation, request data, time, and state
DotMock CLI for creating, configuring, testing, and publishing mocks
Dry-run/testing that proves results without mutating live state
LLM streaming simulation (SSE events, token timing, truncation, disconnects)
MCP integration giving coding agents scoped tools for inspection and authoring
OpenAPI/Swagger import for REST mocks
Protobuf import for gRPC mocks
Proxy mode to mock selected behavior and pass through unmatched traffic
Realtime SSE and WebSocket mocking with scenarios and replay
REST, GraphQL, SOAP, gRPC, LLM API, realtime, and webhook mocking
Stateful workspaces (CRUD, counters, queues, carts, sessions, collections, TTLs, snapshots, state machines)
Team collaboration with roles, approvals, and audit history
Templates and expressions for dynamic, typed responses
Traffic capture and inspection with promotion into editable behavior
Webhook rendering, signing, delivery, retries, and inspection
WSDL/XSD import for SOAP mocks

At a glance

free tierAPI

TypeWeb app

DeploymentCloud

PlatformsWeb, Windows, macOS, Linux

Fordevelopers, teams building with AI coding agents, organizations/enterprises

CompanyDotMock

Resources

Docs

Pricing

All plans draw from a shared USD usage balance with a published rate card for standard interactions, LLM fixtures, realtime, webhooks, and proxy traffic. Included usage refreshes monthly even on annual plans. No postpaid overage — live usage pauses at zero balance. Enterprise pricing is quote-based via sales.

FreeFree

No Dot copilot; no card required

$1 monthly usage included; one active workspace; no collaborators; 25 outbound message-equivalents/second with a burst of 100

Developer$12/mo

Billed at $120/year with two months free; Dot and provider-backed authoring charged at provider cost × 5

$12 monthly usage included; three active workspaces; no collaborators; 20 concurrent realtime connections

Team$49/mo

Billed at $490/year with two months free; shared Dot usage charged at provider cost × 5

$49 monthly usage included; 20 active workspaces; unlimited collaborators; 100 concurrent realtime connections

EnterpriseQuote

Contact sales for pricing

Custom usage balance, workspaces, and concurrency; unlimited collaborators