Evaluate JavaScript expressions on a web page or specific element to retrieve data or manipulate the page.
Apache 2.0
Destructive
519,350 tools. Updated 2026-09-06 07:28
"JavaScript" matching MCP tools:
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New npm package releases and JavaScript dependency updates, hourly from npm.
**Can AI actually read your page?** ChatGPT, Perplexity, Claude and Google's AI Overviews fetch pages very differently from your browser — no JavaScript, tight timeouts, and a robots.txt rulebook of their own. Lekta fetches a URL exactly the way they do and grades what survives, **A+ to F**. This is the technical half of **AEO** (answer engine optimization) and **GEO** (generative engine optimization): before a model can cite you, it has to be able to fetch you, parse you, and find one sentence worth quoting. **The loop this server was built for:** `Audit https://mysite.com/pricing with Lekta, apply the fixes it lists, audit it again, and show me the difference.` Your agent gets a graded verdict, a ranked fix plan with the exact markup to paste, and a diff that proves the change landed. Repeat until A+. **Four layers, 100 points:** **Access** 25 — do the ~17 AI crawler tokens get past robots.txt? **Indexability** 25 — how much content survives without JavaScript? **Answerability** 30 — is there a single quotable sentence an engine can lift? **Recency** 20 — can a model tell when this page was last true? **What this is not:** a rank tracker. Lekta will not tell you how often ChatGPT mentions your brand. It tells you whether your page can be read and quoted when it does — the part you can actually fix. **No black box.** Every finding cites its basis — an RFC, a vendor doc, or a dated measurement we ran. The engine is versioned with a public changelog: a score never moves without a published shift table. **Tools:** `lekta_audit` (fresh fetch) · `lekta_report` (cached read) · `lekta_fix_plan` (ranked, paste-ready) · `lekta_diff` (before/after) · `lekta_my_sites` Listing tools is open. Tool calls need a free key from lekta.dev/en/panel/api — send `Authorization: Bearer lekta_…` or `x-api-key`. Cached reads, fix plans and diffs cost nothing; only fresh fetches count against the daily limit. **Topics:** AEO · GEO · AI SEO · LLM SEO · answer engine optimization · generative engine optimization · AI crawler access (GPTBot, ClaudeBot, PerplexityBot, Google-Extended) · JavaScript-free indexability · structured data · content freshness
- Run JavaScript in the active browser tab to manipulate the DOM, access page variables, or fetch data. Returns the evaluated result or any errors.Apache 2.0
- Execute JavaScript in page context for custom DOM queries, data extraction, and triggering JS APIs. Supports async code and shadow DOM via __pierce.MITDestructive
- Retrieve browser console logs or evaluate JavaScript expressions to debug and interact with web pages.MIT
- Pause JavaScript execution immediately to halt running code and inspect the call stack for debugging.ISC
- Extract secrets, API endpoints, and parameters from JavaScript code or URLs to support offensive security assessments.MIT
- Resume JavaScript execution in Chrome after a pause at a breakpoint, allowing debugging to continue.ISC
- List all JavaScript scripts stored on your Flipper Zero device. View available files for execution or management.MIT
- Enable the JavaScript debugger on a Chrome connection before setting breakpoints or stepping through code.MIT
- Poll a JavaScript expression repeatedly until a non-empty result is returned, with configurable timeout and interval.MIT
- Create an automation rule with JavaScript logic and event triggers to automate helpdesk workflows.MIT
- Execute JavaScript in a Tor-routed Firefox session when TOR_ALLOW_JAVASCRIPT=true, enabling dynamic interactions and content extraction from websites.MITDestructive
- Evaluate JavaScript expressions on a webpage or specific element, returning the execution result for browser automation tasks.MIT
- Search Obsidian note bodies using JavaScript regex to retrieve matching file, line, and excerpt.MIT
- Execute Playwright JavaScript code to automate page interactions and control browser behavior.Apache 2.0Destructive
- Type text into a JavaScript prompt dialog and accept it to handle browser alerts during automation.MIT