Atlas / MCP servers / deeleeramone / PyWry

PyWryBLOCK

Name: PyWry
Author: deeleeramone

mcp/deeleeramone/pywry

MCP server by deeleeramone · aggrid · anywidget · chat application · Audited 2026-10-07

PyWry is a cross-platform app factory, rendering engine and UI toolkit for Python that produces native desktop, web, and notebook experiences from a single API.

Verdict

BLOCK

Grade

Trust score

42 /100

Exposed tools

67 39r · 24w · 4d

Transport

sse · stdio · streamable-http

License

Apache-2.0

Stars

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

PyWry is a cross-platform rendering engine and desktop UI toolkit for Python. One API, three output targets:

Native window — OS webview via PyTauri. Not Qt, not Electron. Use unrestricted HTML/CSS/JS.
Jupyter widget — anywidget + FastAPI + WebSocket, works in JupyterLab, VS Code, and Colab.
Browser tab — FastAPI server with Redis state backend for horizontal scaling.

Build Once, Render Anywhere: Prototype interactive data apps in a Jupyter Notebook, easily deploy them as web apps, and seamlessly compile them into secure, lightweight standalone desktop executables via pywry[freeze].

Installation

Python 3.10–3.14, virtual environment recommended.

pip install pywry

Core extras:

Chat provider extras:

Read from source at commit d870349f2c13OBSERVED · 2026-10-07

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code

claude mcp add pywry-frontend-assets --env GEMINI_API_KEY=${GEMINI_API_KEY} --env NVIDIA_API_KEY=${NVIDIA_API_KEY} --env PYWRY_DEPLOY__AUTH_ENABLED=${PYWRY_DEPLOY__AUTH_ENABLED} --env PYWRY_OAUTH2__CLIENT_ID=${PYWRY_OAUTH2__CLIENT_ID} -- npx -y pywry-frontend-assets

claude-desktop

{
  "mcpServers": {
    "pywry-frontend-assets": {
      "command": "npx",
      "args": [
        "-y",
        "pywry-frontend-assets"
      ],
      "env": {
        "GEMINI_API_KEY": "${GEMINI_API_KEY}",
        "NVIDIA_API_KEY": "${NVIDIA_API_KEY}",
        "PYWRY_DEPLOY__AUTH_ENABLED": "${PYWRY_DEPLOY__AUTH_ENABLED}",
        "PYWRY_OAUTH2__CLIENT_ID": "${PYWRY_OAUTH2__CLIENT_ID}"
      }
    }
  }
}

Exposed tools (67)

39 read · 24 write · 4 destructive. Blast radius: 4 tools can delete or overwrite — an agent that can be talked into calling a tool can be talked into calling this one.

Tool	Risk	Description
`build_div`	read
`build_ticker_item`	read
`chat_get_history`	read
`chat_manage_thread`	read
`chat_register_command`	read
`chat_send_message`	write
`chat_set_typing`	write	Show or hide the typing indicator in a chat widget.
`chat_stop_generation`	write
`chat_update_settings`	write
`create_chat_widget`	write
`create_widget`	write
`destroy_widget`	destructive	Destroy a widget and clean up resources.
`download`	write	Trigger a file download in the browser.
`export_widget`	read
`get_component_docs`	read
`get_component_source`	read
`get_events`	read
`get_skills`	read
`get_widget_app`	read
`inject_css`	read
`list_resources`	read
`list_widgets`	read	List all active widgets with their URLs.
`navigate`	read	Navigate the widget to a new URL (client-side redirect).
`remove_css`	destructive	Remove previously injected CSS by style_id.
`send_event`	write
`set_content`	write
`set_style`	write
`show_dataframe`	read
`show_plotly`	read
`show_toast`	read	Display a toast notification in the widget.
`show_tvchart`	read
`tvchart_add_indicator`	write
`tvchart_add_markers`	write
`tvchart_add_price_line`	write
`tvchart_add_series`	write
`tvchart_apply_options`	write
`tvchart_auto_scale`	read	Toggle auto-scale on the price axis. Emits ``tvchart:auto-scale``.
`tvchart_change_interval`	read
`tvchart_chart_type`	read
`tvchart_compare`	read
`tvchart_drawing_tool`	read
`tvchart_fit_content`	read	Fit all bars to the visible area. Emits ``tvchart:time-scale`` with ``{fitContent: true}``.
`tvchart_fullscreen`	read	Toggle chart fullscreen mode. Emits ``tvchart:fullscreen``.
`tvchart_list_indicators`	read
`tvchart_log_scale`	read	Toggle the logarithmic price scale. Emits ``tvchart:log-scale``.
`tvchart_open_layout`	read	Open the layout picker dialog. Emits ``tvchart:open-layout``.
`tvchart_redo`	read	Redo the last undone chart action. Emits ``tvchart:redo``.
`tvchart_remove_indicator`	destructive
`tvchart_remove_series`	destructive
`tvchart_request_state`	read
`tvchart_save_layout`	write
`tvchart_save_state`	write
`tvchart_screenshot`	read	Take a screenshot of the chart. Emits ``tvchart:screenshot``.
`tvchart_set_visible_range`	write
`tvchart_show_indicators`	read	Open the indicator picker panel. Emits ``tvchart:show-indicators``.
`tvchart_show_settings`	read	Open the chart settings modal. Emits ``tvchart:show-settings``.
`tvchart_symbol_search`	read
`tvchart_time_range`	read
`tvchart_time_range_picker`	read	Open the date-range picker dialog. Emits ``tvchart:time-range-picker``.
`tvchart_toggle_dark_mode`	read	Toggle the chart
`tvchart_undo`	read	Undo the last chart action. Emits ``tvchart:undo``.
`tvchart_update_bar`	write
`tvchart_update_series`	write
`update_marquee`	write
`update_plotly`	write	Update an existing Plotly chart with new data/layout.
`update_theme`	write	Switch widget theme to dark/light/system.
`update_ticker_item`	write

Trust audit

BLOCKgrade F · trust 42/100 Do not install this without reading the findings. The audit found something that could harm you or your machine.

Layer	What it checks	Result
L0	Provenance & inventory	WARN
L1	Static analysis of the code	FAIL
L2	Instruction surface (what it tells the agent)	WARN
L3	Class-specific surface	WARN
L4	Behavioural (sandbox)	SKIPPED