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

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/ai.ctxstore%2Fctxstore-mcp/versions/latest)
- Connected to: https://mcp.ctxstore.ai/mcp
- Homepage: https://ctxstore.ai/
- Repository: https://github.com/ctxstore-ai/ctxstore-mcp
- Scoring rules: v2
- Tools: 33
- Average: 61.1 / 100 (Cloudy)
- Near-identical pairs: 0

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.

## Across the server

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

## Tools

- `store_facts`: 40 / 100
  - Major: Arguments without a description: facts, facts[].category, facts[].key, facts[].namespace, facts[].layer, facts[].is_permanent, facts[].observed_at, facts[].import.
  - Minor: String arguments with no constraint or example: facts[].key, facts[].namespace, facts[].observed_at.
  - Minor: The meaning of the boolean argument facts[].is_permanent is unclear.
  - Minor: The meaning of the boolean argument facts[].import is unclear.
  - Minor: Says nothing about what it returns.
- `resume_session`: 42 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
- `introduce_yourself`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
- `revoke_grant`: 47 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
- `index_stats`: 49 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
- `delete_fact`: 52 / 100
  - Minor: Says nothing about what it returns.
  - 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.
- `get_stats`: 52 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: Says nothing about what it returns.
- `index_search`: 53 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
  - Minor: Says nothing about what it returns.
- `leave_grant`: 55 / 100
  - Minor: Says nothing about what it returns.
- `search_context`: 57 / 100
  - Minor: The description mentions none of its 3 or more arguments.
  - Minor: Says nothing about what it returns.
- `decline_invite`: 59 / 100
  - Minor: Says nothing about what it returns.
- `list_workspaces`: 59 / 100
  - Minor: Says nothing about what it returns.
- `ghost_mode`: 60 / 100
  - Minor: Says nothing about what it returns.
- `move_fact`: 60 / 100
  - Minor: Says nothing about what it returns.
  - 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.
- `index_recent`: 61 / 100
  - Minor: No `required` list, so every argument is optional.
- `mark_salient`: 62 / 100
  - Minor: Says nothing about what it returns.
- `store_session_summary`: 62 / 100
  - Major: Says nothing about when to use it, or when not to.
- `accept_invite`: 64 / 100
  - Major: Says nothing about when to use it, or when not to.
  - 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.
- `get_session_seed`: 64 / 100
- `load_context`: 64 / 100
  - Minor: No `required` list, so every argument is optional.
- `bind_agent`: 65 / 100
  - Minor: Says nothing about what it returns.
  - 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.
- `get_fact_history`: 65 / 100
  - 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.
- `store_fact`: 66 / 100
  - Minor: Says nothing about what it returns.
- `switch_workspace`: 66 / 100
- `list_invites`: 67 / 100
  - Minor: Says nothing about what it returns.
- `reinforce_fact`: 67 / 100
  - Minor: Says nothing about what it returns.
- `search_facts`: 67 / 100
  - Minor: Says nothing about what it returns.
- `list_facts_by_key_prefix`: 69 / 100
- `wake_status`: 71 / 100
  - Minor: No `required` list, so every argument is optional.
- `watch_events`: 71 / 100
  - Minor: No `required` list, so every argument is optional.
- `invite`: 74 / 100
- `setup_account`: 76 / 100
  - Minor: Says nothing about what it returns.
- `get_fact`: 82 / 100
  - 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.

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