# gbrain_search

Keyword search across the wiki brain (FTS5). Faster than gbrain_query

Agent View of the PolicyLayer registry record for `gbrain_search`. HTML page: https://policylayer.com/tools/agent-store/gbrain-search

## Facts

- Tool: `gbrain_search`
- Server: Agent Store (`chrisluersen/agent-store`) — https://policylayer.com/tools/agent-store.md
- Homepage: https://github.com/chrisluersen/agent-store
- Risk category: Read (Low risk)
- Registry record: grade D, identity unverified
- Server rate-limited: no
- Parameters: 0
- Recommended policy verdict: Allowed

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

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

## Why gbrain_search is rated Low

This tool retrieves data using full-text search (FTS5) without side effects. It is a read-only operation that returns results from an indexed search index. No data is created, modified, deleted, or executed. The only risk is potential information disclosure if the search index contains sensitive data, hence low severity.

From the tool's own definition: "Tool performs 'Keyword search across the wiki brain (FTS5)' — a query operation with no modification or execution capability. The description explicitly indicates it retrieves information ('search') rather than modifying or executing code."

## Use case

AI agents call gbrain_search to retrieve information from Agent Store without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Agent Store:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "gbrain_search": {}
  }
}
```

## Other tools on Agent Store (18)

- `fleet_dispatch` — Execute — https://policylayer.com/tools/agent-store/fleet-dispatch.md
- `gbrain_query` — Execute — https://policylayer.com/tools/agent-store/gbrain-query.md
- `gbrain_think` — Execute — https://policylayer.com/tools/agent-store/gbrain-think.md
- `reindex_wiki` — Execute — https://policylayer.com/tools/agent-store/reindex-wiki.md
- `file_synthesis` — Other — https://policylayer.com/tools/agent-store/file-synthesis.md
- `suggest_edges` — Other — https://policylayer.com/tools/agent-store/suggest-edges.md
- `find_related` — Read — https://policylayer.com/tools/agent-store/find-related.md
- `fleet_ping` — Read — https://policylayer.com/tools/agent-store/fleet-ping.md
- `gbrain_brain_stats` — Read — https://policylayer.com/tools/agent-store/gbrain-brain-stats.md
- `gbrain_doctor` — Read — https://policylayer.com/tools/agent-store/gbrain-doctor.md
- `gbrain_get_page` — Read — https://policylayer.com/tools/agent-store/gbrain-get-page.md
- `gbrain_list_pages` — Read — https://policylayer.com/tools/agent-store/gbrain-list-pages.md
- `lint_wiki` — Read — https://policylayer.com/tools/agent-store/lint-wiki.md
- `list_wiki_pages` — Read — https://policylayer.com/tools/agent-store/list-wiki-pages.md
- `read_wiki_page` — Read — https://policylayer.com/tools/agent-store/read-wiki-page.md
- `search_wiki` — Read — https://policylayer.com/tools/agent-store/search-wiki.md
- `synthesize_answer` — Read — https://policylayer.com/tools/agent-store/synthesize-answer.md
- `wiki_stats` — Read — https://policylayer.com/tools/agent-store/wiki-stats.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`

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