# capture_screenshot

Take a screenshot of the TradingView chart

Agent View of the PolicyLayer registry record for `capture_screenshot`. HTML page: https://policylayer.com/tools/byeung888-tradingview-mcp/capture-screenshot

## Facts

- Tool: `capture_screenshot`
- Server: TradingView MCP Bridge (`byeung888/tradingview-mcp`) — https://policylayer.com/tools/byeung888-tradingview-mcp.md
- Homepage: https://github.com/byeung888/tradingview-mcp
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "capture_screenshot",
    "arguments": {}
  }
}
```

## Why capture_screenshot is rated Low

Screenshot capture is a passive data retrieval mechanism with no side effects on the trading system, chart state, or external systems. While screenshots could theoretically contain sensitive market data visible on screen, the operation itself is non-destructive, non-executable, and non-financial in nature. The risk is limited to information exposure rather than system modification or financial impact.

From the tool's own definition: "Tool description states 'Take a screenshot of the TradingView chart' - this retrieves visual data from the chart without modifying state, creating side effects, or executing arbitrary operations. Screenshot capture is a read-only observation operation."

## Use case

AI agents call capture_screenshot to retrieve information from TradingView MCP Bridge without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches TradingView MCP Bridge:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "capture_screenshot": {}
  }
}
```

## Other tools on TradingView MCP Bridge (77)

- `alert_delete` — Destructive — https://policylayer.com/tools/byeung888-tradingview-mcp/alert-delete.md
- `draw_clear` — Destructive — https://policylayer.com/tools/byeung888-tradingview-mcp/draw-clear.md
- `draw_remove_one` — Destructive — https://policylayer.com/tools/byeung888-tradingview-mcp/draw-remove-one.md
- `batch_run` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/batch-run.md
- `chart_scroll_to_date` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/chart-scroll-to-date.md
- `chart_set_visible_range` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/chart-set-visible-range.md
- `layout_switch` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/layout-switch.md
- `pane_focus` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/pane-focus.md
- `pine_check` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/pine-check.md
- `pine_compile` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/pine-compile.md
- `pine_smart_compile` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/pine-smart-compile.md
- `replay_autoplay` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/replay-autoplay.md
- `replay_start` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/replay-start.md
- `replay_step` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/replay-step.md
- `replay_stop` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/replay-stop.md
- `replay_trade` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/replay-trade.md
- `tab_new` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/tab-new.md
- `tab_switch` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/tab-switch.md
- `tv_launch` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/tv-launch.md
- `ui_click` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-click.md
- `ui_evaluate` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-evaluate.md
- `ui_fullscreen` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-fullscreen.md
- `ui_hover` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-hover.md
- `ui_keyboard` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-keyboard.md
- `ui_mouse_click` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-mouse-click.md
- `ui_open_panel` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-open-panel.md
- `ui_scroll` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-scroll.md
- `ui_type_text` — Execute — https://policylayer.com/tools/byeung888-tradingview-mcp/ui-type-text.md
- `alert_list` — Read — https://policylayer.com/tools/byeung888-tradingview-mcp/alert-list.md
- `chart_get_state` — Read — https://policylayer.com/tools/byeung888-tradingview-mcp/chart-get-state.md
- …and 47 more: https://policylayer.com/tools/byeung888-tradingview-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

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Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=byeung888-tradingview-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/byeung888-tradingview-mcp