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Nervous System MCP server

by levelsofself·io.github.levelsofself/nervous-system·v1.12.1·4 stars
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Governance for LLM agents: 7 enforced rules + read-only reference tools. Safe in any MCP client.

A85/100grade A
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Safety scan
A85/100

full report

Adoption
Growing

4 stars50 downloads/wk

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

Nervous System tools (12, 1 write)

write = sends, deletes, buys or posts

Read from the package source without running it. The installed server may list more.

  • audit_mcp_config

    Governance lint for MCP server configurations (free, local). Checks: plaintext secrets in env, unpinned packages, auto-install flags, broad filesystem scopes, shell wrappers, non-TLS remote transports, unpinned docker tags. Returns findings with severities and a 0-100 score.

  • check_preflight

    Check if a file is protected (UNTOUCHABLE)

  • dispatch_to_llm

    Dispatch a task to a background Claude Code agent

  • emergency_kill_switchwrite action

    Emergency stop all agents (requires KILL_SECRET env var)

  • get_dispatch_template

    Get a task file template for dispatching agents

  • get_framework

    Get the complete Nervous System governance framework with all 7 rules

  • get_handoff_template

    Get a session handoff template

  • get_nervous_system_info

    Get system info, version, and production stats

  • get_origin_story

    Get the origin story of The Nervous System

  • get_step_back_prompt

    Get a step-back reflection prompt

  • get_worklog_format

    Get the worklog entry format

  • verify_audit_chain

    Verify the tamper-evident SHA-256 audit trail

Public scan report

scanner v0.1.9 · 2026-09-26 · same rubric, same numbers if you re-run it

no findings
  • Code scan4 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 71 days ago12/15
  • Maintainer identityregistry namespace matches repository owner6/10
Overall 85/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Nervous System compares

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

Safety score
85/100
higher than 73% of 4,460 AI and agents servers
Tools
12
the typical AI and agents server has 6
Tools that change things
8%
typical: 0%. Fewer write tools means less an agent can break
GitHub stars
4
more than 77% of 2,711 AI and agents servers
Downloads a week
50
more than 42% of 1,538 AI and agents servers with a package

What its tools let an agent do: 11 read · 1 change

Install Nervous System in Claude Code, Cursor or VS Code

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

claude mcp add nervous-system -- npx -y mcp-nervous-system
Add to Cursor

What the publisher says

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

Nervous System

Deterministic governance lint for MCP server configurations, plus reference tooling for the 7 rules.

What each tool actually does

Install

npx mcp-nervous-system

Free local tool: auditmcpconfig

Pass your config as config (object) or configjson (string), e.g. the contents of claudedesktop_config.json. Returns findings with severities and a 0-100 score.

Hosted API (pay-per-call, x402, USDC on Base)

The write-capable toolset runs server-side and is not in this package.

  • POST https://api.100levelup.com/x402/audit-mcp - governance lint ($0.05 USDC)
  • GET https://api.100levelup.com/x402/verify-audit - audit-chain verification ($0.005 USDC)

Discovery: /openapi.json and /llms.txt.

2.0.0 breaking changes

package is a fossil the moment it ships.

  • emergencykillswitch -> getkillswitch_instructions. It never stopped anything.
  • verifyauditchain -> getauditverification_instructions. It never verified a chain.
  • dispatchtollm -> getdispatchcommand. It never dispatched.
  • check_preflight no longer matches hardcoded filenames from the author's own server. It reads your list.
  • Hardcoded fleet counts and violation totals removed from getoriginstory. A number baked into a

License

MIT

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

Nervous System: common questions

Is Nervous System MCP server safe?
Yes, by our scan: it is graded A (85/100). Read the Nervous System safety report
How do I install Nervous System?
It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Nervous System need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Nervous System maintained?
The last commit was 110 days ago (2026-07-17). The latest release is v1.12.1.
What can I use instead of Nervous System?
Servers from other publishers that do the same job: Roast My Design System MCP server, Roast My Design System MCP server and OpenWorkProof MCP server.
How does Nervous System compare with other AI and agents MCP servers?
safety score 85/100 (higher than 73% of 4,460 AI and agents servers); tools 12 (the typical AI and agents server has 6); tools that change things 8% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

Alternatives to Nervous System

Same job from other publishers: the closest match first, then the best rated.

  • Roast My Design System
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  • Roast My Design System
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  • OpenWorkProof
    Verifiable agent evidence; opt-in Codex guard and reference SOC alert review.
    A
  • Attestix
    AI agent identity, signed credentials, delegated authority and governance evidence.
    A
  • NVIDIA Elements
    NVIDIA Elements UI design system and agent tools for AI/ML, robotics, and autonomous vehicles.
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