# study_session

Find due cards and apply review-state actions such as answering, suspending, unsuspending, resetting, and relearning cards. Use this for scheduling and review flow, not for editing note content or reorganizing decks. Several operations mutate card state in Anki immediately;

Agent View of the PolicyLayer registry record for `study_session`. HTML page: https://policylayer.com/tools/io-github-arielbk-anki-mcp/study-session

## Facts

- Tool: `study_session`
- Server: Anki (`@arielbk/anki-mcp`) — https://policylayer.com/tools/io-github-arielbk-anki-mcp.md
- Install: `npx -y @arielbk/anki-mcp`
- Homepage: https://github.com/arielbk/anki-mcp
- Risk category: Execute (High risk)
- Registry record: grade F, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Rate-limited

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "study_session",
    "arguments": {}
  }
}
```

## Why study_session is rated High

This tool triggers external operations on Anki card state (answering, suspending, resetting, relearning) that take effect immediately. While some sub-actions are reversible (unsuspending), others like resetting scheduling data are difficult to undo.

From the tool's own definition: "'apply review-state actions such as answering, suspending, unsuspending, resetting, and relearning cards' and 'Several operations mutate card state in Anki immediately'"

## Use case

AI agents invoke study_session to trigger actions in Anki. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call: builds kicked off, notifications sent, workflows started.

## Recommended policy (PolicyLayer)

Verdict: **Rate-limited**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Anki:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "study_session": {
      "limits": [
        {
          "counter": "study_session_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}
```

## Other tools on Anki (97)

- `clear_unused_tags` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/clear-unused-tags.md
- `delete_decks` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/delete-decks.md
- `delete_media_file` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/delete-media-file.md
- `delete_notes` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/delete-notes.md
- `gui_exit_anki` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-exit-anki.md
- `manage_decks` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/manage-decks.md
- `model_field_remove` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/model-field-remove.md
- `model_template_remove` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/model-template-remove.md
- `remove_deck_config` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/remove-deck-config.md
- `remove_empty_notes` — Destructive — https://policylayer.com/tools/io-github-arielbk-anki-mcp/remove-empty-notes.md
- `anki_operations` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/anki-operations.md
- `gui_answer_card` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-answer-card.md
- `gui_deck_browser` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-deck-browser.md
- `gui_deck_review` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-deck-review.md
- `gui_select_card` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-select-card.md
- `gui_select_note` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-select-note.md
- `gui_show_answer` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-show-answer.md
- `gui_show_question` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-show-question.md
- `gui_start_card_timer` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-start-card-timer.md
- `relearn_cards` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/relearn-cards.md
- `reload_collection` — Execute — https://policylayer.com/tools/io-github-arielbk-anki-mcp/reload-collection.md
- `api_reflect` — Other — https://policylayer.com/tools/io-github-arielbk-anki-mcp/api-reflect.md
- `card_reviews` — Other — https://policylayer.com/tools/io-github-arielbk-anki-mcp/card-reviews.md
- `export_package` — Other — https://policylayer.com/tools/io-github-arielbk-anki-mcp/export-package.md
- `gui_browse` — Other — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-browse.md
- `gui_undo` — Other — https://policylayer.com/tools/io-github-arielbk-anki-mcp/gui-undo.md
- `multi` — Other — https://policylayer.com/tools/io-github-arielbk-anki-mcp/multi.md
- `request_permission` — Other — https://policylayer.com/tools/io-github-arielbk-anki-mcp/request-permission.md
- `sync` — Other — https://policylayer.com/tools/io-github-arielbk-anki-mcp/sync.md
- `cards_to_notes` — Read — https://policylayer.com/tools/io-github-arielbk-anki-mcp/cards-to-notes.md
- …and 67 more: https://policylayer.com/tools/io-github-arielbk-anki-mcp.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-arielbk-anki-mcp · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-arielbk-anki-mcp