Nervous System

LLM behavioral enforcement: 7 rules preventing context loss, file damage, and drift.

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to Cursor Add to VS Code

Manual Client & Custom JSON ConfigExpand JSON ▾

Client Config & Setup

Choose your client or environment

Target File:~/Library/Application Support/Claude/claude_desktop_config.json

claude_desktop_config.json

{
  "mcpServers": {
    "nervous-system": {
      "command": "npx",
      "args": [
        "-y",
        "nervous-system"
      ]
    }
  }
}

💡 Paste the JSON block into your client's configuration file under mcpServers, then restart the application.

Documentation Overview

Nervous System

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

What each tool actually does

Tool	Does real work?
`audit_mcp_config`	Yes. Deterministic lint, zero dependencies, fully offline, never throws. Checks inline secrets in env, shell wrappers, unpinned packages, auto-install flags, broad filesystem scopes, non-TLS remote transports, unpinned docker tags. Returns findings with severities and a 0-100 score.
`check_preflight`	Yes, when configured. Reads `protected_files_list` from `nervous-system.config.json` or `NERVOUS_SYSTEM_PROTECTED_LIST`. With no list it says so rather than guessing. If the list is unreadable it FAILS CLOSED.
`get_*` (everything else)	No. They return text: the framework, templates, instructions. That is why they are named `get_`.

Install

Terminal

npx mcp-nervous-system

Free local tool: audit_mcp_config

Pass your config as config (object) or config_json (string), e.g. the contents of claude_desktop_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

emergency_kill_switch -> get_kill_switch_instructions. It never stopped anything.
verify_audit_chain -> get_audit_verification_instructions. It never verified a chain.
dispatch_to_llm -> get_dispatch_command. 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 get_origin_story. A number baked into a package is a fossil the moment it ships.

License

MIT

Read the full README →View source on GitHub →

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Frequently Asked Questions about Nervous System

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "nervous-system": { "command": "npx", "args": ["-y", "nervous-system"] } }

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Technical Specs & Signals

CategoryDeveloper Tools

27Quality signal: Emerging · 27/100How this signal is calculated ▾

Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20

Documentation & tools11/30

Adoption & activity1/15

Community engagement0/10

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Documentation Overview

Nervous System

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

What each tool actually does

Tool	Does real work?
`audit_mcp_config`	Yes. Deterministic lint, zero dependencies, fully offline, never throws. Checks inline secrets in env, shell wrappers, unpinned packages, auto-install flags, broad filesystem scopes, non-TLS remote transports, unpinned docker tags. Returns findings with severities and a 0-100 score.
`check_preflight`	Yes, when configured. Reads `protected_files_list` from `nervous-system.config.json` or `NERVOUS_SYSTEM_PROTECTED_LIST`. With no list it says so rather than guessing. If the list is unreadable it FAILS CLOSED.
`get_*` (everything else)	No. They return text: the framework, templates, instructions. That is why they are named `get_`.

Install

Terminal

npx mcp-nervous-system

Free local tool: audit_mcp_config

Pass your config as config (object) or config_json (string), e.g. the contents of claude_desktop_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

emergency_kill_switch -> get_kill_switch_instructions. It never stopped anything.
verify_audit_chain -> get_audit_verification_instructions. It never verified a chain.
dispatch_to_llm -> get_dispatch_command. 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 get_origin_story. A number baked into a package is a fossil the moment it ships.

License

MIT