io.weathersight/weathersight: tool descriptions scored

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://weathersight.io/api/mcp
Homepage: weathersight.io
Repository: github.com/greatsnakes/weathersight-mcp
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how io.weathersight/weathersight'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/io.weathersight/weathersight

Average score: 69.2 / 100Cloudy
Tools: 26
Near-identical descriptions: 0

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

countries

54 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Minor
String arguments with no constraint or example: ctryid.loose_string_param

metrics

61 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 25 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

No issues.

compare

62 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Minor
String arguments with no constraint or example: latlon, locid, observed_period.loose_string_param

anom

64 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Minor
String arguments with no constraint or example: latlon, locid, observed_period.loose_string_param

dailycountbyyear

64 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

No issues.

dailyweather

64 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
String arguments with no constraint or example: date.loose_string_param

location

64 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Minor
String arguments with no constraint or example: latlon, locid.loose_string_param

anomalies

67 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Minor
String arguments with no constraint or example: latlon, locid.loose_string_param

breaking

67 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

No issues.

timeseries

67 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Minor
String arguments with no constraint or example: latlon, locid.loose_string_param

bestplace

69 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
String arguments with no constraint or example: max_results.loose_string_param

besttime

69 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
String arguments with no constraint or example: latlon, locid, max_results.loose_string_param

climatetwins

69 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

No issues.

seasonal

69 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

No issues.

typicalweather

69 / 100Cloudy

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Minor
String arguments with no constraint or example: latlon, locid.loose_string_param

climatecomps

72 / 100Clear

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 10 / 10

No issues.

climatetrends

72 / 100Clear

Purpose: 17 / 20
When to use: 10 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 10 / 10

No issues.

degreedays

72 / 100Clear

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 5 / 10

Minor
String arguments with no constraint or example: is_forecast, latlon.loose_string_param

dailycomp

74 / 100Clear

Purpose: 17 / 20
When to use: 20 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 5 / 10

Minor
String arguments with no constraint or example: latlon, locid.loose_string_param

dailycountbyloc

74 / 100Clear

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

No issues.

dailyfcasteval

74 / 100Clear

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
String arguments with no constraint or example: start_date.loose_string_param

events

74 / 100Clear

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
String arguments with no constraint or example: latlon, locid.loose_string_param

fcastevalbygroup

74 / 100Clear

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

No issues.

recentextremes

74 / 100Clear

Purpose: 17 / 20
When to use: 15 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

No issues.

extremes

79 / 100Clear

Purpose: 17 / 20
When to use: 20 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
String arguments with no constraint or example: latlon, locid.loose_string_param

fcastevalbylocation

82 / 100Clear

Purpose: 17 / 20
When to use: 20 / 20
Arguments: 18 / 25
Return value: 7 / 15
Constraints and side effects: 10 / 10
Examples: 10 / 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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