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Januscope MCP server

by giancarloerra·io.github.giancarloerra/januscope·v0.5.0·32 stars
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Local MCP proxy for tool restrictions, response redaction, audit logs, and database schema context.

A92/100grade A
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Safety scan
A92/100

full report

Adoption
Growing

32 stars80 downloads/wk

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If you have run it, two minutes of your experience saves the next person an afternoon.

Januscope tools

No tool declarations could be read from the package source. They show once the server is installed.

Public scan report

scanner v0.1.10 · 2026-10-15 · same rubric, same numbers if you re-run it

no findings
  • Code scan85 source files scanned25/25
  • –Live reliabilityno gateway calls yet and no remote to proben/a
  • –Tool poisoningtools not inspected (local package is not executed); not countedn/a
  • Auth qualitylocal package, no credentials required12/15
  • Maintenancelast push 6 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 92/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Januscope compares

Against every graded Databases MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
92/100
higher than 90% of 802 Databases servers
GitHub stars
32
more than 87% of 602 Databases servers
Downloads a week
80
more than 51% of 328 Databases servers with a package

Install Januscope in Claude Code, Cursor or VS Code

Runs npx -y januscope on your machine. Read the scan report first; the gateway never runs local packages.

claude mcp add januscope -- npx -y januscope
Add to Cursor

What the publisher says

From the Januscope repository's README, as published. We do not edit it. Read it on GitHub

JanuScope

= 20">

"Whatever you see anywhere (sky, sea, clouds, lands) are all closed and opened by my hand."

Ovid, Fasti I, 117–18 (Janus speaking)

JanuScope is the local MCP policy proxy. One YAML wraps any MCP server with policy, redaction, audit, and database-schema injection. JanuScope runs locally, with no hosted gateway in the data path. Your upstream server and model provider can still receive data.

JanuScope hides the dangerous tools, scrubs matching PII out of returned values before the model reads them, records call outcomes, and pre-injects your DB schema to reduce discovery calls. Runs locally, no hosted gateway in the data path.

One YAML (called a Lens) wraps any MCP server with security guardrails, schema injection, and full audit logging. There are 20 bundled Lenses covering databases (Postgres, MySQL, MongoDB, ClickHouse, Redis, SQLite, Microsoft SQL Server / Azure SQL, Oracle, Neon, Snowflake, Aurora DSQL, Redshift, Supabase self-host), SaaS APIs (Stripe, Notion, Atlassian, Linear, Supabase Cloud), source control (GitHub), and the filesystem. A community ecosystem of per-MCP Lenses (YAML config files), and measured benchmarks showing 84% fewer tokens and ~3× faster responses in the original three-question Postgres test (median of 4 runs; history reset between questions). Newer retained-conversation results and limitations are reported below. Zero server changes. No hosted gateway in the data path. Works with Claude Code, VSCode Copilot, Codex, Cursor, and any MCP client.

🧠 Need codebase understanding together with MCP governance? See our sibling project SocratiCode: local-first codebase intelligence with semantic search, dependency graphs, symbol-level impact analysis.

Kindly sponsored by Altaire Limited. We also offer a commercial license for organisations where AGPL is a blocker.

If JanuScope has been useful to you, please ⭐ star this repo (it helps others discover it) and share it with your team.

Policy enforcement at the MCP threshold. Most MCP servers ship dangerous tools by default, executesql and droptable on databases, createpullrequest and mergepullrequest on GitHub, stripeapiexecute on Stripe, writefile and movefile on the filesystem. None of them log what the LLM asked yesterday. The choice today is fork every server or accept the risk. Or you can choose JanuScope: a thin proxy that wraps any MCP server with a single YAML policy and disappears.

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Januscope: common questions

Is Januscope MCP server safe?
Yes, by our scan: it is graded A (92/100). Read the Januscope safety report
How do I install Januscope?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Januscope need an API key?
No secret keys are declared. It reads 3 settings from the environment.
Is Januscope maintained?
The last commit was 26 days ago (2026-10-09). The latest release is v0.5.0.
What can I use instead of Januscope?
Servers from other publishers that do the same job: Airtable MCP server, LINQ to DB MCP server and Rebase MCP server. Compare all Januscope alternatives.
How does Januscope compare with other Databases MCP servers?
safety score 92/100 (higher than 90% of 802 Databases servers); github stars 32 (more than 87% of 602 Databases servers); downloads a week 80 (more than 51% of 328 Databases servers with a package). Full comparison.

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