Bear Notes Claude ExtensionSAFE
MCP Server for Bear note taking app available as Claude Desktop extension or standalone server for any other AI tool
Overview
From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.
[](https://github.com/vasylenko/bear-notes-mcp/actions/workflows/ci.yml) [](https://deepwiki.com/vasylenko/bear-notes-mcp) [](https://glama.ai/mcp/servers/vasylenko/bear-notes-mcp)
[](https://buymeacoffee.com/vasylenko)
An unofficial, opinionated MCP server for Bear Notes — built around relevance-ranked search instead of substring matching. Results come ranked across titles, bodies, and hierarchical tags, with snippets and combinable filters (tag, date, pinned). Reads run direct against Bear's SQLite database — no Bear app required for queries.
Writes route through Bear's own URL handler — atomic and validated by Bear. Offline-first: no network calls, no telemetry, all processing on your Mac. Works with any MCP client — Claude Desktop, Claude Code, Codex, Gemini, Cursor. Ships as a one-click .mcpb extension or a standalone npm package.
Example prompts:
Find the deep-dive I wrote on export pipelines, somewhere under #engineering/
Append today's decisions to the 'Decisions' section of my Weekly Ops note
Pull every note under #research/llm-evals into a survey outline
Find my notes tagged #blog/drafts and draft this week's post outline
✨ Key Features
- Read-only by default — flip Edit Mode for writes. 4 tools always on (search, open, find untagged, list tags); 8 more in Edit Mode for create, edit, attach, tag, archive
- Relevance-ranked search across titles, bodies, and tags — finds the right note, not just the ones that contained your literal words
- Date-based search with relative dates ("yesterday", "last week", "start of la
2fca836319d8OBSERVED · 2026-10-07Connect
Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control.
claude mcp add bear-mcp-site -- npx -y [email protected]
{
"mcpServers": {
"bear-mcp-site": {
"command": "npx",
"args": [
"-y",
"[email protected]"
]
}
}
}Exposed tools (13)
7 read · 5 write · 1 destructive. Blast radius: 1 tool can delete or overwrite — an agent that can be talked into calling a tool can be talked into calling this one.
| Tool | Risk | Description |
|---|---|---|
bear-add-file | write | |
bear-add-tag | write | |
bear-add-text | write | |
bear-archive-note | read | |
bear-capabilities | read | |
bear-create-note | write | |
bear-delete-tag | destructive | |
bear-find-untagged-notes | read | |
bear-list-tags | read | |
bear-open-note | read | |
bear-rename-tag | write | |
bear-replace-text | read | |
bear-search-notes | read |
Trust audit
SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.
| Layer | What it checks | Result |
|---|---|---|
| L0 | Provenance & inventory | PASS |
| L1 | Static analysis of the code | PASS |
| L2 | Instruction surface (what it tells the agent) | PASS |
| L3 | Class-specific surface | WARN |
| L4 | Behavioural (sandbox) | SKIPPED |
What the source does
- Filesystem
- declared (1 observation(s))
- Network
- none-observed
- Shell
- none-observed
- Dependencies
- not all pinned
- Secrets in source
- none-found
Findings (15)
bear-delete-tag
.mcpbignore
.ncurc.cjs
.pre-commit-config.yaml
.sonarcloud.properties
.taskrc.yml
AGENTS.md
import { closeBearDatabase, openBearDatabase } from '../../src/infra/database.js';const SERVER_PATH = resolve(import.meta.dirname, '../../dist/main.js');
import { APP_VERSION } from '../../src/config.js';import { readOnlyInstructions } from '../../src/instructions.js';it('rejects symbolic links (no follow-the-link exfiltration)', () => {@modelcontextprotocol/sdk, debug, zod, zod-to-json-schema, @anthropic-ai/mcpb, eslint-plugin-import, promptfoo, tsx
@astrojs/sitemap, @tailwindcss/vite, @vercel/analytics, astro, tailwindcss, @resvg/resvg-js, satori, sharp
docs/assets/demo.gif
Gates applied: no_behavioural_pass.
2fca836319d8full audit observations/trust-audit/mcp-server/vasylenko__bear-notes-claude-extension.json · Report an issue / request a re-scanAudit history
Every audit this server has had. A grade with a past is a grade somebody is still checking.
| Date | Source | Verdict | Grade | Score | Change |
|---|---|---|---|---|---|
| 2026-10-07 | 2fca836319d8 | SAFE | B | 89 | first audit |
Questions
What is the Bear Notes Claude Extension MCP server?
MCP Server for Bear note taking app available as Claude Desktop extension or standalone server for any other AI tool
What tools does Bear Notes Claude Extension expose?
13 in total: 7 read-only, 5 that write, and 1 that can delete or overwrite (bear-delete-tag). Every one is listed on this page with its risk.
Is Bear Notes Claude Extension safe to connect to an agent?
The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B. Separately from the audit: 1 of its tools can destroy data, so scope the token you give it to what you actually need.
What credentials does Bear Notes Claude Extension need?
No credential environment variables were found in its source, so it appears to need none.
How does Bear Notes Claude Extension run?
It speaks stdio, so it runs as a local process your client starts. It is published on npm as bear-mcp-site at 0.0.1.
How current is this page?
The grade is for one exact copy of the source (2fca836319d8), read on 2026-10-07. The repository is watched and re-audited when it changes.