ATTRACTOR Verification, State & Evidence: tool descriptions scored io.github.NovanBaillif/attractor-machine-commons

tools/list taken: 2026-11-02 (UTC)
From: Official MCP Registry
Connected to: https://attractor-observatory-demo.vercel.app/mcp
Homepage: attractor-observatory-demo.vercel.app/native.md
Repository: github.com/NovanBaillif/attractor-machine-commons
Scoring rules: v2
Removal: support@forecall.dev

Scores, issues and names only

This page shows how ATTRACTOR Verification, State & Evidence (io.github.NovanBaillif/attractor-machine-commons)'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.github.NovanBaillif/attractor-machine-commons

Average score: 63.2 / 100Cloudy
Tools: 20
Near-identical descriptions: 1

Across the server

Tools whose descriptions are nearly the same

1 of 1 pairs shown, highest description similarity first.
Tool	Tool	Description similarity	Name similarity
canonicalize_json	fingerprint_json	0.74	0.33

Tools

contribute_solution

49 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 9 / 25
Return value: 8 / 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
Major
Arguments without a description: problem, problem.title, problem.output_schema, solution, solution.slug, solution.recipe, solution.recipe.fields, solution.recipe.fields[].from, solution.recipe.fields[].to, solution.recipe.fields[].steps, solution.examples, solution.examples[].input, solution.examples[].expected, solution.parent_id, solution.exposure_id, solution.conventions.param_no_description
Minor
String arguments with no constraint or example: problem.title, solution.slug, solution.recipe.fields[].from, solution.recipe.fields[].to.loose_string_param
Minor
The description mentions none of its 3 or more arguments.params_not_in_description

find_evidence

52 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 12 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: id, capability, kind, limit.param_no_description
Minor
No `required` list, so every argument is optional.no_required

read_solution

52 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 8 / 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
Arguments without a description: id.param_no_description
Minor
The description mentions none of its 3 or more arguments.params_not_in_description
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

find_solutions

54 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 12 / 25
Return value: 15 / 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
Major
Arguments without a description: query, input, output_schema, limit.param_no_description
Minor
No `required` list, so every argument is optional.no_required

check_observation

56 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 16 / 25
Return value: 8 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: about, receipt, replay.param_no_description

verify_reuse

58 / 100Cloudy

Purpose: 17 / 20
When to use: 5 / 20
Arguments: 14 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: id, exposure_id, marker, input, output.param_no_description
Minor
Required identifiers whose description does not say where the value comes from: id, exposure_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

verify_artifact

62 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 20 / 25
Return value: 15 / 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
Arguments without a description: artifact, state_id.param_no_description

coerce_to_schema

63 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 16 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: value, schema, decimal_comma.param_no_description
Minor
The meaning of the boolean argument decimal_comma is unclear.vague_boolean

map_fields

63 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 16 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: value, mapping, omit_missing.param_no_description
Minor
The meaning of the boolean argument omit_missing is unclear.vague_boolean

retrieve_state

63 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 16 / 25
Return value: 15 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Major
Arguments without a description: id, query, limit.param_no_description

validate_schema

65 / 100Cloudy

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

Minor
Arguments without a description: value, schema.param_no_description

canonicalize_json

67 / 100Cloudy

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

Minor
Its description is nearly the same as fingerprint_json's (similarity 0.74); only the names and schemas tell them apart. Say in this description when to use fingerprint_json instead.confusable_pair
Minor
Arguments without a description: value.param_no_description

fingerprint_json

67 / 100Cloudy

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

Minor
Its description is nearly the same as canonicalize_json's (similarity 0.74); only the names and schemas tell them apart. Say in this description when to use canonicalize_json instead.confusable_pair
Minor
Arguments without a description: value.param_no_description

flatten_json

67 / 100Cloudy

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

Minor
Arguments without a description: value.param_no_description

share_state

67 / 100Cloudy

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

Major
Arguments without a description: artifact, visibility, title, kind, tags, parent_id.param_no_description

dedupe_records

70 / 100Clear

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

Minor
Arguments without a description: records, keys.param_no_description

diff_json

70 / 100Clear

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

Minor
Arguments without a description: before, after.param_no_description

find_capability

70 / 100Clear

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

Minor
Arguments without a description: query, limit.param_no_description
Minor
The description mentions none of its 3 or more arguments.params_not_in_description

extract_json

72 / 100Clear

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

Minor
Arguments without a description: text.param_no_description

record_observation

77 / 100Clear

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

Minor
Arguments without a description: record.param_no_description

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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