# WebLens (dev.weblens/weblens): tool descriptions scored

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/dev.weblens%2Fweblens/versions/latest)
- Connected to: https://api.weblens.dev/mcp
- Homepage: https://api.weblens.dev/
- Repository: https://github.com/vasilistotskas/weblens
- Scoring rules: v2
- Tools: 26
- Average: 44.2 / 100 (Cloudy)
- Near-identical pairs: 1

This page shows how WebLens (dev.weblens/weblens)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

## Across the server

- Minor: 26 tools. Above 25, models start to tell tools apart less well.
- Minor: The server has no instructions. Say there, once, what the server is for and when to use it: Claude Code and Gemini CLI read the instructions before the tool descriptions.

## Tools

- `screenshot`: 30 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `answer_question`: 37 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `extract_data`: 37 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_autocomplete`: 37 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `deep_research`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `detect_tech`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `get_contents`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `map_site`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_discussions`: 40 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `youtube_transcript`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
  - Minor: Required identifiers whose description does not say where the value comes from: videoId. Name the tool or the place that returns it, or models look it up first.
- `crawl_site`: 43 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_images`: 44 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_news`: 44 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_scholar`: 44 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_shopping`: 44 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `fetch_webpage`: 45 / 100
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_trends`: 45 / 100
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `extract_pdf`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_web`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `search_places`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `company_profile`: 50 / 100
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `domain_intel`: 50 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `fetch_webpage_pro`: 50 / 100
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `package_intel`: 50 / 100
  - Minor: Says nothing about what it returns.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `project_due_diligence`: 52 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No constraints, side effects, auth or rate limits described, and no annotations.
- `preview_endpoint`: 63 / 100

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