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WebLens: tool descriptions scored dev.weblens/weblens

tools/list taken
(UTC)
From
Official MCP Registry
Connected to
https://api.weblens.dev/mcp
Homepage
api.weblens.dev
Repository
github.com/vasilistotskas/weblens
Scoring rules
v2
Removal
support@forecall.dev
Score this URL as it is today

Scores, issues and names only

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.

servers/dev.weblens/weblens
Average score
44.2 / 100Cloudy
Tools
26
Near-identical descriptions
1

Across the server

  • Minor
    26 tools. Above 25, models start to tell tools apart less well.many_tools
  • 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.instructions_missing

Tools whose descriptions are nearly the same

1 of 1 pairs shown, highest description similarity first.
ToolToolDescription similarityName similarity
fetch_webpagefetch_webpage_pro0.390.67

Tools

screenshot

30 / 100Rain

Purpose
10 / 20
When to use
0 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    The description mentions none of its 3 or more arguments.params_not_in_description
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

answer_question

37 / 100Rain

Purpose
14 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

extract_data

37 / 100Rain

Purpose
17 / 20
When to use
0 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_autocomplete

37 / 100Rain

Purpose
14 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

deep_research

40 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

detect_tech

40 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

get_contents

40 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

map_site

40 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    The description mentions none of its 3 or more arguments.params_not_in_description
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_discussions

40 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    The description mentions none of its 3 or more arguments.params_not_in_description
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

youtube_transcript

42 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
5 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints
  • 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.id_source_missing

crawl_site

43 / 100Cloudy

Purpose
20 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    The description mentions none of its 3 or more arguments.params_not_in_description
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_images

44 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_news

44 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_scholar

44 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_shopping

44 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

fetch_webpage

45 / 100Cloudy

Purpose
20 / 20
When to use
5 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Minor
    Its description is nearly the same as fetch_webpage_pro's (similarity 0.39); only the names and schemas tell them apart. Say in this description when to use fetch_webpage_pro instead.confusable_pair
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_trends

45 / 100Cloudy

Purpose
17 / 20
When to use
5 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

extract_pdf

47 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_web

47 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

search_places

49 / 100Cloudy

Purpose
14 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
0 / 10
Examples
5 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    The description mentions none of its 3 or more arguments.params_not_in_description
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

company_profile

50 / 100Cloudy

Purpose
17 / 20
When to use
5 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
5 / 10
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

domain_intel

50 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
10 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

fetch_webpage_pro

50 / 100Cloudy

Purpose
20 / 20
When to use
10 / 20
Arguments
20 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
0 / 10
  • Minor
    Its description is nearly the same as fetch_webpage's (similarity 0.39); only the names and schemas tell them apart. Say in this description when to use fetch_webpage instead.confusable_pair
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

package_intel

50 / 100Cloudy

Purpose
17 / 20
When to use
5 / 20
Arguments
23 / 25
Return value
0 / 15
Constraints and side effects
0 / 10
Examples
5 / 10
  • Minor
    Says nothing about what it returns.no_return_info
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

project_due_diligence

52 / 100Cloudy

Purpose
17 / 20
When to use
0 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
0 / 10
Examples
5 / 10
  • Major
    Says nothing about when to use it, or when not to.no_usage_context
  • Minor
    No constraints, side effects, auth or rate limits described, and no annotations.no_constraints

preview_endpoint

63 / 100Cloudy

Purpose
20 / 20
When to use
5 / 20
Arguments
23 / 25
Return value
7 / 15
Constraints and side effects
3 / 10
Examples
5 / 10

No issues.

What static scoring cannot tell

This score reads only the text of each description and schema: it says what is written, not what a model will do. Short tools whose names already say what they do, such as browser_close, score low here even when models use them well, and in our measurements current models chose the right tool in one step even from one-line descriptions, as long as the names and schemas differed. What the text cannot show, such as what happens over several steps and whether an added sentence helps or misleads, is what an evaluation measures, on the Pro and Team plans.

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