Stunt Double MCP Server

Deploy AI user personas to validate user journeys at scale. Find UX friction before real users do.

Stunt Double deploys AI agents with realistic user personas to validate user journeys at scale. Create actors, run automated workflows and checklists against any web app, and surface friction points before real users encounter them. Integrates with Claude, Linear, GitHub, and Slack.

Quick Start

Claude Code

claude mcp add --transport http stuntdouble https://app.stuntdouble.io/api/mcp

Claude Desktop

Go to Settings → Connectors → Add and paste:

https://app.stuntdouble.io/api/mcp

Cursor / Windsurf

Add to your MCP configuration file:

{
  "mcpServers": {
    "stuntdouble": {
      "url": "https://app.stuntdouble.io/api/mcp"
    }
  }
}

Authentication

Authentication is handled automatically via OAuth 2.1 with PKCE. The first time your AI client connects, a browser window will open for you to sign in and authorise access to your Stunt Double account. No API keys or tokens required.

Available Tools

Workspaces

Tool	Description
`list_workspaces`	List all workspaces you belong to, including your role in each
`get_workspace`	Get details of a specific workspace by ID or slug
`list_workspace_members`	List all members of a workspace with their roles and profiles
`invite_member`	Invite a new member to a workspace
`remove_member`	Remove a member from a workspace

Actors

Tool	Description
`list_actors`	List active actors in a workspace
`get_actor`	Get full details of an actor including system prompt and capabilities
`create_actor`	Create a new actor in a workspace
`update_actor`	Update an actor's name, description, system prompt, or capabilities
`archive_actor`	Archive an actor (soft delete)

Knowledge

Tool	Description
`list_actor_knowledge`	List knowledge entries for an actor
`add_actor_knowledge`	Add a knowledge entry to an actor
`remove_actor_knowledge`	Remove a knowledge entry from an actor

Conversations

Tool	Description
`list_conversations`	List conversations in a workspace, optionally filtered by actor
`get_conversation`	Get a conversation with its messages
`create_conversation`	Create a new conversation with an actor
`delete_conversation`	Delete a conversation and all its messages

Checklists

Tool	Description
`list_checklists`	List checklists in a workspace
`get_checklist`	Get a checklist with its checks and recent runs
`get_checklist_run`	Get a checklist run with per-check results and evidence
`run_checklist`	Trigger a new checklist run (async, returns run ID)

Workflows

Tool	Description
`list_workflows`	List workflows in a workspace
`get_workflow`	Get a workflow with its steps and recent runs
`create_workflow`	Create a new workflow in a workspace
`update_workflow`	Update a workflow name, description, or trigger configuration
`delete_workflow`	Delete a workflow and all its steps and runs
`run_workflow`	Trigger a new workflow run (async, returns run ID)
`list_workflow_runs`	List runs for a workflow
`get_workflow_run`	Get a workflow run with step-level details

Feedback

Tool	Description
`list_feedback`	List feedback for a project, newest first
`get_feedback`	Get a specific feedback submission with details
`update_feedback_status`	Update the status of a feedback submission

Transport

This server uses Streamable HTTP transport. The endpoint is:

https://app.stuntdouble.io/api/mcp

License

MIT

Stunt Double