obsidian-mcp-server@3.9.0
VERIFIED· startup onlyPublisher claims: "Read, write, search, and surgically edit Obsidian vault notes, tags, and frontmatter via MCP. STDIO or Streamable HTTP." Observed in sandbox: no network, touches nothing outside the project, writes no memory.
Coverage
Startup only; authenticated tool behavior not tested.- Tested
- server startup over stdio (initialize sent) · every file read, file written and host contacted by what ran
- Not tested
- the tool list (the server exited before answering) · what the tools do when called with real credentials
- Needs
- OBSIDIAN_API_KEY — give it to the server where it runs, through vet-skills run --secrets, so the value never enters the server's environment. Never paste a credential into a chat, a ticket or a report.
What this means for the label: Verified here covers what ran. The server's tools were not exercised with a real credential, so nothing about their behavior is asserted; the credential summary below says what to do with that.
Before you give it your token
- It will ask for
- no credential variables read in the code; at startup it asked for OBSIDIAN_API_KEY
- Where it talks to
- no vendor host named in the code
- What the honeypot saw
- no credential files read · no network
- What we could not test
- the tool list (the server exited before answering) · what the tools do when called with real credentials
Connect it under the guard. Startup only; authenticated tool behavior not tested. The code names no credential variable; the guard pins the network to what the honeypot saw and logs every call.
Never paste a credential into a chat, a ticket or a report, including ours. How the guard holds it.
Is [email protected] safe to install?
KillerSkills ran it in the KillerSkills honeypot sandbox (2 scenarios; startup only; authenticated tool behavior not tested) on 2026-11-12 and scored it 83/100 (Verified). In what ran, nothing we could detect went wrong: no undeclared network egress, no credential reads, no persistent instruction writes. What it does with a real credential was not observed (it asks for OBSIDIAN_API_KEY); the static findings and the publisher carry the rest of the score. Summary: no network, touches nothing outside the project, writes no memory.
Behavior trace
Honeypot run · 60 s · 2 scenarios · 0 deviationsStatic findings
readonly recovery: "Read the block with obsidian_get_note (format \"content\"), repair the YAML between the `---` fences, then retry the delete.";Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell."bundle": "bun run build && npx -y @anthropic-ai/mcpb pack . dist/obsidian-mcp-server.mcpb && bun run scripts/clean-mcpb.ts dist/obsidian-mcp-server.mcpb",Fix: Pin versions and sources; vendor anything fetched at install time.… no round can run), nothing needs a session and stateless HTTP starts. stdio is never refused — `MCP_SESSION_MODE` has no effect there. `tests/integration/delete-note-confi…Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.readonly recovery: "Read the block with obsidian_get_note (format \"content\"), repair the YAML between the `---` fences, then retry the delete.";Fix: Keep SKILL.md to visible, descriptive text. Remove comments and encoded text that address the agent.…uded. `mcp.json` holds one `"type": "stdio"` entry keyed by the unscoped name, `npx -y obsidian-mcp-server`, and the same fixed `env` as `.codex-plugin/mcp.json`. Nei…Fix: Pin versions and sources; vendor anything fetched at install time.readonly recovery: "Call obsidian_get_note with format \"document-map\" to list available headings, blocks, and frontmatter fields, then retry with one of those locators.";Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.RUN mkdir -p /var/log/obsidian-mcp-server && chown -R bun:bun /var/log/obsidian-mcp-serverFix: Request the narrowest permission that works; replace wildcards with the exact paths or hosts.readonly recovery: "Call obsidian_get_note with format \"document-map\" to list available headings, blocks, and frontmatter fields, then retry with one of those locators.";Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.… no round can run), nothing needs a session and stateless HTTP starts. stdio is never refused — `MCP_SESSION_MODE` has no effect there. `tests/integration/delete-note-confi…Fix: Remove the text that addresses the agent rather than the reader; describe behavior, do not instruct.…uded. `mcp.json` holds one `"type": "stdio"` entry keyed by the unscoped name, `npx -y obsidian-mcp-server`, and the same fixed `env` as `.codex-plugin/mcp.json`. Nei…Fix: Pin versions and sources; vendor anything fetched at install time..describe('Global kill switch. When true, denies every write regardless of OBSIDIAN_WRITE_PATHS, and suppresses the OBSIDIAN_ENABLE_COMMANDS pair (commands can mutate). Defaults to false.'),Fix: Build commands from fixed arguments; do not interpolate untrusted strings into a shell.Cost to the agent
Tokens estimated at four characters each. The tool list is re-read by the agent on every turn, so it is the number to compare between servers that do the same job: ranked across the index.
Known vulnerabilities
No advisories in OSV for obsidian-mcp-server@3.9.0 as of 38 h ago. This is the package itself, not its dependencies.