ctxstore — memory that follows you across models: tool descriptions scored ai.ctxstore/ctxstore-mcp

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

Scores, issues and names only

This page shows how ctxstore — memory that follows you across models (ai.ctxstore/ctxstore-mcp)'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/ai.ctxstore/ctxstore-mcp

Average score: 61.1 / 100Cloudy
Tools: 33
Near-identical descriptions: 0

Across the server

Minor
33 tools. Above 25, models start to tell tools apart less well.many_tools

Tools

store_facts

40 / 100Cloudy

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

Major
Arguments without a description: facts, facts[].category, facts[].key, facts[].namespace, facts[].layer, facts[].is_permanent, facts[].observed_at, facts[].import.param_no_description
Minor
String arguments with no constraint or example: facts[].key, facts[].namespace, facts[].observed_at.loose_string_param
Minor
The meaning of the boolean argument facts[].is_permanent is unclear.vague_boolean
Minor
The meaning of the boolean argument facts[].import is unclear.vague_boolean
Minor
Says nothing about what it returns.no_return_info

resume_session

42 / 100Cloudy

Purpose: 10 / 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

introduce_yourself

47 / 100Cloudy

Purpose: 17 / 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

revoke_grant

47 / 100Cloudy

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

index_stats

49 / 100Cloudy

Purpose: 17 / 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

delete_fact

52 / 100Cloudy

Purpose: 17 / 20
When to use: 10 / 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: fact_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

get_stats

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

index_search

53 / 100Cloudy

Purpose: 17 / 20
When to use: 0 / 20
Arguments: 19 / 25
Return value: 0 / 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
No `required` list, so every argument is optional.no_required
Minor
Says nothing about what it returns.no_return_info

leave_grant

55 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

search_context

57 / 100Cloudy

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

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

decline_invite

59 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

list_workspaces

59 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

ghost_mode

60 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 23 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Minor
Says nothing about what it returns.no_return_info

move_fact

60 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 18 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 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: fact_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

index_recent

61 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 22 / 25
Return value: 7 / 15
Constraints and side effects: 7 / 10
Examples: 0 / 10

Minor
No `required` list, so every argument is optional.no_required

mark_salient

62 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

store_session_summary

62 / 100Cloudy

Purpose: 20 / 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

accept_invite

64 / 100Cloudy

Purpose: 20 / 20
When to use: 0 / 20
Arguments: 22 / 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
Required identifiers whose description does not say where the value comes from: grant_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

get_session_seed

64 / 100Cloudy

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

No issues.

load_context

64 / 100Cloudy

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

Minor
No `required` list, so every argument is optional.no_required

bind_agent

65 / 100Cloudy

Purpose: 20 / 20
When to use: 5 / 20
Arguments: 20 / 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: agent_id. Name the tool or the place that returns it, or models look it up first.id_source_missing

get_fact_history

65 / 100Cloudy

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

Minor
The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does.deprecated

store_fact

66 / 100Cloudy

Purpose: 20 / 20
When to use: 10 / 20
Arguments: 19 / 25
Return value: 0 / 15
Constraints and side effects: 7 / 10
Examples: 10 / 10

Minor
Says nothing about what it returns.no_return_info

switch_workspace

66 / 100Cloudy

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

No issues.

list_invites

67 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

reinforce_fact

67 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

search_facts

67 / 100Cloudy

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

Minor
Says nothing about what it returns.no_return_info

list_facts_by_key_prefix

69 / 100Cloudy

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

No issues.

wake_status

71 / 100Clear

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

Minor
No `required` list, so every argument is optional.no_required

watch_events

71 / 100Clear

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

Minor
No `required` list, so every argument is optional.no_required

invite

74 / 100Clear

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

No issues.

setup_account

76 / 100Clear

Purpose: 20 / 20
When to use: 15 / 20
Arguments: 21 / 25
Return value: 0 / 15
Constraints and side effects: 10 / 10
Examples: 10 / 10

Minor
Says nothing about what it returns.no_return_info

get_fact

82 / 100Clear

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

Minor
The description says the tool is deprecated. Name the replacement, and consider taking the tool out of tools/list: models avoid it when asked for what it does.deprecated

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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