io.github.levelsofself/nervous-system
NPM · MCP-NERVOUS-SYSTEM · SCANNED SEP 20
Governance for LLM agents: 7 enforced rules + read-only reference tools. Safe in any MCP client.
Available components
How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score → Why this is hard to score →
Supply Chain Security98
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- 31 of 95 dependencies flagged as unhealthy. View diagnostics → Partial
Provenance & Transparency45
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 66 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability80
- 100% of prompts and resources have a non-trivial description (not blank, and not just the item's name).Pass
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 417 tokens (~29/item across 14 items; 12 tools + 2 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management87
- Stability observed for 26 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "emergency_kill_switch" implies "kill" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 13 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
How do I install the io.github.levelsofself/nervous-system MCP server?
io.github.levelsofself/nervous-system runs locally as an npm package, launched with npx -y mcp-nervous-system. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
npm · mcp-nervous-system
claude mcp add levelsofself-nervous-system -- npx -y mcp-nervous-system
{
"mcpServers": {
"levelsofself-nervous-system": {
"command": "npx",
"args": [
"-y",
"mcp-nervous-system"
]
}
}
} {
"servers": {
"levelsofself-nervous-system": {
"command": "npx",
"args": [
"-y",
"mcp-nervous-system"
]
}
}
} codex mcp add levelsofself-nervous-system -- npx -y mcp-nervous-system
{
"$schema": "https://opencode.ai/config.json",
"mcp": {
"levelsofself-nervous-system": {
"type": "local",
"command": [
"npx",
"-y",
"mcp-nervous-system"
],
"enabled": true
}
}
} openclaw mcp add levelsofself-nervous-system --command npx --arg -y --arg mcp-nervous-system
mcp_servers:
levelsofself-nervous-system:
command: "npx"
args: ["-y", "mcp-nervous-system"] {
"McpServers": {
"levelsofself-nervous-system": {
"Transport": "stdio",
"Command": "npx",
"Arguments": [
"-y",
"mcp-nervous-system"
]
}
}
} assistant mcp add levelsofself-nervous-system -t stdio -c npx -a -y mcp-nervous-system
{
"mcpServers": {
"levelsofself-nervous-system": {
"command": "npx",
"args": [
"-y",
"mcp-nervous-system"
]
}
}
} Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 20 Sept 26 0
- Security disclosure: unverified → fail ▼ functional
- 19 Sept 26 0
- Security disclosure: fail → unverified ▼ functional
- 18 Sept 26 −2
- Stability: pass → 0.80 functional
- 17 Sept 26 0
- Stability: 0.97 → pass security
- Security disclosure: unverified → fail ▼ functional
- 16 Sept 26 +1
- Security disclosure: fail → unverified ▼ functional
- 14 Sept 26 +1
No change was recorded against any check on this day. Stability & Change Management went from 87 to 90. That category is still filling its 30-day observation window: 26 days of observed history at the previous scan, 27 at this one. The score rises as the window fills, whether or not the server changes.
- 12 Sept 26 0
- Security disclosure: unverified → fail ▼ functional
- 11 Sept 26 +1
- Security disclosure: fail → unverified ▼ functional
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 20 Sept 2026 · Analysed npm/mcp-nervous-system@1.12.1
Provenance No attestation
The registry publishes no build provenance for this version, so there is nothing to verify.
| Result | No attestation |
|---|---|
| Ecosystem | npm |
Background: How many MCP packages publish verified provenance →
Dependencies 95 packages
| Packages resolved | 95 |
|---|---|
| Stale | 31 |
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
audit_mcp_config ~131
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.
| Name | Type | Req | Description |
|---|---|---|---|
| config | object | – | The MCP config JSON as an object (e.g. claude_desktop_config.json content). Provide this OR config_json, not both. |
| config_json | string | – | The MCP config JSON as a string; it will be parsed. Provide this OR config, not both. |
No output schema declared.
No examples provided.
check_preflight ~32
Check if a file is protected (UNTOUCHABLE)
| Name | Type | Req | Description |
|---|---|---|---|
| file_path | string | yes | Path to check |
No output schema declared.
No examples provided.
dispatch_to_llm ~44
Dispatch a task to a background Claude Code agent
| Name | Type | Req | Description |
|---|---|---|---|
| max_turns | number | – | Max turns (default 15) |
| task | string | yes | Task description |
No output schema declared.
No examples provided.
emergency_kill_switch ~32
Emergency stop all agents (requires KILL_SECRET env var)
| Name | Type | Req | Description |
|---|---|---|---|
| reason | string | yes | Reason for kill |
No output schema declared.
No examples provided.
get_dispatch_template ~19
Get a task file template for dispatching agents
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_framework ~22
Get the complete Nervous System governance framework with all 7 rules
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_handoff_template ~17
Get a session handoff template
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_nervous_system_info ~22
Get system info, version, and production stats
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_origin_story ~19
Get the origin story of The Nervous System
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_step_back_prompt ~17
Get a step-back reflection prompt
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
get_worklog_format ~17
Get the worklog entry format
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
verify_audit_chain ~23
Verify the tamper-evident SHA-256 audit trail
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
What is the io.github.levelsofself/nervous-system MCP server?
io.github.levelsofself/nervous-system is an MCP server listed in the public MCP registry as io.github.levelsofself/nervous-system. Governance for LLM agents: 7 enforced rules + read-only reference tools. Safe in any MCP client. This page covers its npm package (mcp-nervous-system).
Is the io.github.levelsofself/nervous-system MCP server safe to use?
io.github.levelsofself/nervous-system scores 81 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 20 September 2026. It declares no install or post-install scripts. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the io.github.levelsofself/nervous-system MCP server expose?
io.github.levelsofself/nervous-system exposes 12 tools: get_framework, get_nervous_system_info, check_preflight, get_origin_story, get_handoff_template, and 7 more. Their descriptions and schemas cost roughly 395 tokens of context every time the server is loaded.
Is the io.github.levelsofself/nervous-system MCP server still maintained?
io.github.levelsofself/nervous-system is still listed as active in the MCP registry. We last reached this channel on 20 September 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.
What licence is the io.github.levelsofself/nervous-system MCP server under?
io.github.levelsofself/nervous-system declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.