xyz.pflow.sim/whatif: tool descriptions scored

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://sim.pflow.xyz/mcp
Homepage: sim.pflow.xyz
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how xyz.pflow.sim/whatif'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/xyz.pflow.sim/whatif

Average score: 62.4 / 100Cloudy
Tools: 59
Near-identical descriptions: 3

Across the server

Major
59 tools. Above 40, models choose less accurately.too_many_tools

Tools whose descriptions are nearly the same

3 of 3 pairs shown, highest description similarity first.
Tool	Tool	Description similarity	Name similarity
sim_list_bindings	sim_map_list	0.67	0.50
sim_create_system	sim_system	0.45	0.67
sim_publish	sim_publish_compare	0.35	0.67

Tools

sim_map_get

38 / 100Rain

Purpose: 13 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_map_list

38 / 100Rain

Purpose: 6 / 20
When to use: 0 / 20
Arguments: 25 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
The description only restates the name (8 words).restates_name
Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Its description is nearly the same as sim_list_bindings's (similarity 0.67); only the names and schemas tell them apart. Say in this description when to use sim_list_bindings instead.confusable_pair
Minor
Says nothing about what it returns.no_return_info

sim_diff

42 / 100Cloudy

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

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: a, b.loose_string_param
Minor
Says nothing about what it returns.no_return_info

sim_license_model

42 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 18 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 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
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_crosscheck

45 / 100Cloudy

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

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: id.loose_string_param
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
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_get_binding

45 / 100Cloudy

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

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_list_bindings

45 / 100Cloudy

Purpose: 13 / 20
When to use: 0 / 20
Arguments: 25 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Its description is nearly the same as sim_map_list's (similarity 0.67); only the names and schemas tell them apart. Say in this description when to use sim_map_list instead.confusable_pair
Minor
Says nothing about what it returns.no_return_info

sim_my_sheets

45 / 100Cloudy

Purpose: 13 / 20
When to use: 0 / 20
Arguments: 25 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 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

sim_invariants

47 / 100Cloudy

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

Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_neighbors

47 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_classify

49 / 100Cloudy

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

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_dataset

49 / 100Cloudy

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

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_delete_model

50 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_edges

50 / 100Cloudy

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

sim_components

52 / 100Cloudy

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

sim_get_artifact

55 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_extend

57 / 100Cloudy

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

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_get_model

57 / 100Cloudy

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

Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_map_put

57 / 100Cloudy

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

No issues.

sim_param_heatmap

57 / 100Cloudy

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

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: id, param_x, param_y.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_propose_types

57 / 100Cloudy

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

Minor
No `required` list, so every argument is optional.no_required
Minor
Says nothing about what it returns.no_return_info

sim_diagnose

59 / 100Cloudy

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

Major
Says nothing about when to use it, or when not to.no_usage_context
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_list_models

59 / 100Cloudy

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

Minor
No `required` list, so every argument is optional.no_required
Minor
Says nothing about what it returns.no_return_info

sim_distill

60 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_publish

60 / 100Cloudy

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

Minor
Its description is nearly the same as sim_publish_compare's (similarity 0.35); only the names and schemas tell them apart. Say in this description when to use sim_publish_compare instead.confusable_pair
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_publish_app

60 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_evaluate

62 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 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: id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_migration_offers

63 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

sim_check_witness

64 / 100Cloudy

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

Minor
The description is long (496 words). It helps selection but costs steps and tokens.too_long
Minor
No `required` list, so every argument is optional.no_required

sim_compose

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.

sim_accept_migration

65 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

sim_conformance

65 / 100Cloudy

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

Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_calibrate

67 / 100Cloudy

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

No issues.

sim_canonical

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: id.loose_string_param

sim_create_collection

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: name.loose_string_param

sim_optimize

67 / 100Cloudy

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

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

sim_refine

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
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_supersede_model

67 / 100Cloudy

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

No issues.

sim_code_to_flow

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.

sim_bind

70 / 100Clear

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

Minor
The description is long (401 words). It helps selection but costs steps and tokens.too_long

sim_conformance_stream

70 / 100Clear

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

Minor
The description is long (583 words). It helps selection but costs steps and tokens.too_long
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Says nothing about what it returns.no_return_info

sim_publish_compare

70 / 100Clear

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

Minor
Its description is nearly the same as sim_publish's (similarity 0.35); only the names and schemas tell them apart. Say in this description when to use sim_publish instead.confusable_pair
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_distinguish

72 / 100Clear

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

Minor
The description is long (451 words). It helps selection but costs steps and tokens.too_long
Minor
No `required` list, so every argument is optional.no_required

sim_reroll

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

No issues.

sim_sequences

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
The description is long (532 words). It helps selection but costs steps and tokens.too_long
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_verify

73 / 100Clear

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

Minor
The description is long (543 words). It helps selection but costs steps and tokens.too_long
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Says nothing about what it returns.no_return_info
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_create_system

74 / 100Clear

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

Minor
Its description is nearly the same as sim_system's (similarity 0.45); only the names and schemas tell them apart. Say in this description when to use sim_system instead.confusable_pair
Minor
The description is long (558 words). It helps selection but costs steps and tokens.too_long
Minor
No `required` list, so every argument is optional.no_required

sim_system

74 / 100Clear

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

Minor
Its description is nearly the same as sim_create_system's (similarity 0.45); only the names and schemas tell them apart. Say in this description when to use sim_create_system instead.confusable_pair
Minor
The description is long (1116 words). It helps selection but costs steps and tokens.too_long
Minor
No `required` list, so every argument is optional.no_required

sim_generate

75 / 100Clear

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

No issues.

sim_link

75 / 100Clear

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

No issues.

sim_prompt

75 / 100Clear

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

Minor
The description is long (437 words). It helps selection but costs steps and tokens.too_long

sim_prove

75 / 100Clear

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

Minor
The description is long (724 words). It helps selection but costs steps and tokens.too_long
Minor
Says nothing about what it returns.no_return_info

sim_reach

77 / 100Clear

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

Minor
The description is long (664 words). It helps selection but costs steps and tokens.too_long

sim_run_pipeline

77 / 100Clear

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

Minor
The description is long (772 words). It helps selection but costs steps and tokens.too_long

sim_compare

80 / 100Clear

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

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

sim_query

80 / 100Clear

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

Minor
The description is long (481 words). It helps selection but costs steps and tokens.too_long

sim_receipt

80 / 100Clear

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

Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_scenario

82 / 100Clear

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

Minor
The description is long (619 words). It helps selection but costs steps and tokens.too_long
Minor
String arguments with no constraint or example: id.loose_string_param
Minor
Required identifiers whose description does not say where the value comes from: id. Name the tool or the place that returns it, or models look it up first.id_source_missing

sim_create_model

85 / 100Clear

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

Minor
The description is long (529 words). It helps selection but costs steps and tokens.too_long

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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