Skip to main content
Glama
devskido

Playwright MCP Server

by devskido

playwright_iframe_click

Click elements within iframes using CSS selectors to interact with embedded content in web pages.

Instructions

Click an element in an iframe on the page

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
iframeSelectorYesCSS selector for the iframe containing the element to click
selectorYesCSS selector for the element to click

Implementation Reference

  • The execute method of IframeClickTool performs the iframe click using Playwright's frameLocator to select the iframe and locator.click() on the target element within it. It handles the case where the iframe is not found.
    export class IframeClickTool extends BrowserToolBase {
      /**
       * Execute the iframe click tool
       */
      async execute(args: any, context: ToolContext): Promise<ToolResponse> {
        return this.safeExecute(context, async (page) => {
          const frame = page.frameLocator(args.iframeSelector);
          if (!frame) {
            return createErrorResponse(`Iframe not found: ${args.iframeSelector}`);
          }
          
          await frame.locator(args.selector).click();
          return createSuccessResponse(`Clicked element ${args.selector} inside iframe ${args.iframeSelector}`);
        });
      }
    }
  • Input schema defining the parameters iframeSelector and selector as required strings for identifying the iframe and element to click.
      name: "playwright_iframe_click",
      description: "Click an element in an iframe on the page",
      inputSchema: {
        type: "object",
        properties: {
          iframeSelector: { type: "string", description: "CSS selector for the iframe containing the element to click" },
          selector: { type: "string", description: "CSS selector for the element to click" },
        },
        required: ["iframeSelector", "selector"],
      },
    },
  • In the main tool handler switch statement, calls the execute method of the pre-instantiated iframeClickTool instance.
    case "playwright_iframe_click":
      return await iframeClickTool.execute(args, context);
  • Instantiation of the IframeClickTool instance during tool initialization in handleToolCall.
    if (!iframeClickTool) iframeClickTool = new IframeClickTool(server);
  • Import of IframeClickTool from './tools/browser/interaction.js'.
    IframeClickTool,
Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

With no annotations provided, the description carries the full burden of behavioral disclosure. It states the action ('Click') but doesn't describe what happens after clicking (e.g., page navigation, element state changes), error conditions (e.g., if selectors are invalid), or performance implications (e.g., waiting for iframe load). This leaves significant gaps for a mutation tool.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence that directly states the tool's function without unnecessary words. It's front-loaded with the core action and target, making it easy to parse quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

For a mutation tool with no annotations and no output schema, the description is incomplete. It doesn't explain the return value (e.g., success/failure status), error handling, or side effects like page changes. Given the complexity of interacting with iframes, more context is needed for effective use.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, with both parameters clearly documented in the schema. The description doesn't add any additional meaning beyond implying that 'iframeSelector' targets an iframe and 'selector' targets an element within it, which is already evident from the schema. This meets the baseline for high schema coverage.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the action ('Click') and target ('an element in an iframe on the page'), making the purpose immediately understandable. However, it doesn't explicitly differentiate from sibling tools like 'playwright_click' (which clicks elements outside iframes) or 'playwright_iframe_fill' (which fills iframe elements), missing full sibling differentiation.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines2/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention that 'playwright_click' should be used for non-iframe elements or 'playwright_iframe_fill' for filling iframe inputs, nor does it specify prerequisites like requiring the page to be loaded with the iframe present.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Install Server

Other Tools

Latest Blog Posts

MCP directory API

We provide all the information about MCP servers via our MCP API.

curl -X GET 'https://glama.ai/api/mcp/v1/servers/devskido/customed-playwright'

If you have feedback or need assistance with the MCP directory API, please join our Discord server