# Persistent Kb MCP server

Agent View of the PolicyLayer registry record for Persistent Kb: identity, probed posture, risk grade, and all 5 tools classified. HTML page: https://policylayer.com/tools/0x67108864-persistent-kb-mcp

## Facts

- Server id: `0x67108864/persistent-kb-mcp`
- Homepage: https://github.com/0x67108864/persistent-kb-mcp
- Registry record: grade D, identity unverified
- Lifecycle: active
- Rate-limited: no
- Tools: 5
- Tool categories present: Destructive, Read, Write
- Tags: 0x67108864 persistent kb mcp, admin
- Record last modified: 2026-07-02T12:53:55.206Z

## Tools (5)

| Tool | Category | Risk | Record |
| --- | --- | --- | --- |
| `kb_list` | Read | Low | https://policylayer.com/tools/0x67108864-persistent-kb-mcp/kb-list.md |
| `kb_search` | Read | Low | https://policylayer.com/tools/0x67108864-persistent-kb-mcp/kb-search.md |
| `kb_show` | Read | Low | https://policylayer.com/tools/0x67108864-persistent-kb-mcp/kb-show.md |
| `kb_add` | Write | Medium | https://policylayer.com/tools/0x67108864-persistent-kb-mcp/kb-add.md |
| `kb_tag` | Write | Medium | https://policylayer.com/tools/0x67108864-persistent-kb-mcp/kb-tag.md |

## Tool descriptions

- `kb_list` — List recent entries with optional filters by kind, tag, or date.
- `kb_search` — Full-text search over the persistent knowledge base via SQLite FTS5.
- `kb_show` — Retrieve a single entry
- `kb_add` — Save a fact, lesson, decision, or reference to the local persistent knowledge base.
- `kb_tag` — Add or remove tags on an existing entry.

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- Nodebench (824 tools) — https://policylayer.com/tools/io-github-homenshum-nodebench.md
- Yaver (808 tools) — https://policylayer.com/tools/io-github-kivanccakmak-yaver.md
- Binance MCP Server (734 tools) — https://policylayer.com/tools/nirholas-binance-mcp.md
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- AdButler (622 tools) — https://policylayer.com/tools/adbutler.md
- Fortimanager (584 tools) — https://policylayer.com/tools/jmpijll-fortimanager-mcp.md
- Crow (578 tools) — https://policylayer.com/tools/kh0pper-crow.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=0x67108864-persistent-kb-mcp · API: https://policylayer.com/registry/api · Recommended policies for every tool: https://policylayer.com/policies/0x67108864-persistent-kb-mcp