FlowLens MCP

flowlens-mcp-server gives your coding agent (Claude Code, Cursor, Copilot, Codex) full browser context for in-depth debugging and regression testing.

How it works

• Record your browser flow using the <a href="https://chromewebstore.google.com/detail/jecmhbndeedjenagcngpdmjgomhjgobf?utm_source=github-repo" target="_blank" rel="noopener noreferrer">FlowLens Chrome extension</a> (user actions, network, console, storage, DOM events/screen recording).
• Share it with your coding agent via the FlowLens MCP server, giving the agent full access to the recording.
• Your agent inspects and analyzes the flow for debugging and insights — without spending time/tokens on reproducing the issue.

Demo

<video src="https://github.com/user-attachments/assets/fd73f2e6-6a7d-4518-b0db-62b8c6e6c99a" autoplay loop muted playsinline></video>

Requirements

• <a href="https://chromewebstore.google.com/detail/jecmhbndeedjenagcngpdmjgomhjgobf?utm_source=github-repo" target="_blank" rel="noopener noreferrer">FlowLens browser extension</a> add to chrome and pin for ease of use
• pipx

Getting Started

To install:

pipx install flowlens-mcp-server

To upgrade to the latest version:

pipx upgrade flowlens-mcp-server

To check that the installation was successfully:

flowlens-mcp-server

Add FlowLens MCP server

Add the following config to your MCP client (ex: ~/.claude.json) under mcpServers:

"flowlens": {
  "command": "flowlens-mcp-server",
  "type": "stdio"
}

MCP Client configuration

<details> <summary>Claude Code</summary> Use the Claude Code CLI to add the FlowLens MCP server (<a href="https://docs.anthropic.com/en/docs/claude-code/mcp" target="_blank" rel="noopener noreferrer">guide</a>):

claude mcp add flowlens --transport stdio -- flowlens-mcp-server

</details>

<details> <summary>Cursor</summary>

Click the button to install:

<img src="https://cursor.com/deeplink/mcp-install-dark.svg" alt="Install in Cursor">

Or install manually:

Go to Cursor Settings -> MCP -> New MCP Server. Use the config provided above.

</details>

<details> <summary>Copilot / VS Code</summary> Follow the MCP install <a href="https://code.visualstudio.com/docs/copilot/chat/mcp-servers#_add-an-mcp-server" target="_blank" rel="noopener noreferrer">guide</a>, with the standard config from above. You can also install the FlowLens MCP server using the VS Code CLI:

code --add-mcp '{"name":"flowlens","command":"flowlens-mcp-server"}'

</details>

<details> <summary>Codex</summary> Use the Codex CLI to add the FlowLens MCP server <a href="https://github.com/openai/codex/blob/main/docs/advanced.md#model-context-protocol-mcp" target="_blank" rel="noopener noreferrer">configure MCP guide</a>:

codex mcp add flowlens -- flowlens-mcp-server

</details>

<details> <summary>Antigravity</summary> Follow the <a href="https://antigravity.google/docs/mcp" target="_blank" rel="noopener noreferrer">Connecting Custom MCP Servers guide</a>. Add the following config to the MCP servers config:

"flowlens": {
  "command": "flowlens-mcp-server"
}

</details>

Note:

The above setup only works with local flows. If you want to also connect to shareable flows, get your FLOWLENS_MCP_TOKEN from the <a href="https://flowlens.magentic.ai/flowlens/setup-wizard?tool=vscode" target="_blank" rel="noopener noreferrer">FlowLens platform</a> and add it to your relevant MCP config file:

"flowlens": {
  "command": "flowlens-mcp-server",
  "type": "stdio",
  "env": {
    "FLOWLENS_MCP_TOKEN": "YOUR_FLOWLENS_MCP_TOKEN"
  }
}

Usecases:

Bug reporting

• Use FlowLens to quickly report bugs with full context to your coding agent. You no longer need to copy-paste console logs, take multiple screenshots, or have the agent spend tokens on reproducing the issue.

Regression testing

• Use FlowLens to record your crticial user flows and ask your coding agent to auto test these flows or generate corresponding playwright test scripts

Shareable flows

• Share captured flows with your teammates on the FlowLens platform and debug with your coding agent by adding a generated access token in the MCP config. More on this here