Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add supportersimulator/3-surgeons --skill neurologistgit clone --depth 1 https://github.com/supportersimulator/3-surgeonsWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/supportersimulator/3-surgeons/neurologist)<a href="https://agentmods.dev/skills/supportersimulator/3-surgeons/neurologist"><img src="https://agentmods.dev/badge/skills/supportersimulator/3-surgeons/neurologist/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/supportersimulator/3-surgeons/neurologist"><img src="https://agentmods.dev/badge/skills/supportersimulator/3-surgeons/neurologist.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00018 | $0.00434 |
| Opus 5 | $0.00009 | $0.00217 |
| Sonnet 5 | $0.00004 | $0.00087 |
| Haiku 4.5 | $0.00002 | $0.00043 |
Grade A, and why
neurologist scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 10d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
What it actually says
Neurologist
The Neurologist (Qwen3-4B local) provides three capabilities: health monitoring, corrigibility skepticism, and self-introspection.
Pulse (Health Check)
Run before critical operations to verify the entire system is healthy.
When to pulse:
- Session start (part of probe)
- Before operations that depend on all surgeons being available
- After infrastructure changes (model swaps, endpoint changes)
- When something feels off (slow responses, unexpected results)
What it checks:
llm_health— can the neurologist respond?state_backend— is the state store operational?evidence_store— is the evidence database accessible?gpu_lock— is the GPU lock stale (dead PID holding it)?
MCP tool: neurologist_pulse_tool
CLI: 3s neurologist-pulse
Challenge (Corrigibility Skeptic)
The neurologist challenges assumptions about proposed changes. Use this before committing to an approach.
When to challenge:
- Major architectural decisions
- Changes that affect safety or security
- When you're confident but haven't tested the counter-position
- Before implementing an approach that bypasses existing patterns
What you get back:
claim— what was assumed to be truechallenge— the counter-argumentseverity— critical, worth_testing, or informationalsuggested_test— how to verify the counter-position
MCP tool: neurologist_challenge_tool
CLI: 3s neurologist-challenge "proposed change"
Introspect (Capability Self-Report)
Ask each surgeon to honestly report what they can and cannot do.
When to introspect:
- After changing models or endpoints
- When a surgeon gives unexpected results
- To calibrate confidence in surgeon outputs
MCP tool: introspect_tool
CLI: 3s introspect
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 10d ago First seen · 59 lines · 18 tokens per session scan A 455af8ddcbd4
neurologist is a skill published in the GitHub repository supportersimulator/3-surgeons (2 stars, last pushed 3mo ago), licensed MIT. It adds 18 tokens to every session and 434 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.
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