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 core0-io/nio --skill nio-doctorgit clone --depth 1 https://github.com/core0-io/nioWrote 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/core0-io/nio/nio-doctor)<a href="https://agentmods.dev/skills/core0-io/nio/nio-doctor"><img src="https://agentmods.dev/badge/skills/core0-io/nio/nio-doctor/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/core0-io/nio/nio-doctor"><img src="https://agentmods.dev/badge/skills/core0-io/nio/nio-doctor.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00075 | $0.00653 |
| Opus 5 | $0.00037 | $0.00327 |
| Sonnet 5 | $0.00015 | $0.00131 |
| Haiku 4.5 | $0.00007 | $0.00065 |
Grade A, and why
nio-doctor scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 11d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 56 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Nio — Doctor
Validate the current configuration end-to-end. Doctor catches issues before they cause silent failures during real tool calls. This is the focused doctor capability of the Nio framework.
Passive invocation. If the user asks whether their Nio setup/config is valid or working, to test OAuth/LLM/external-endpoint connectivity, or why a scorer isn't firing, you MUST run the CLI below rather than reasoning about it from memory.
Resolving the Script Path
The CLI for this skill lives in the sibling nio skill, not in this skill's own directory:
- This SKILL.md's parent directory is THIS skill's directory (e.g.
<plugins>/skills/nio-doctor/). - The script is the sibling
nioskill'sscripts/doctor-cli.js— i.e.../nio/scripts/doctor-cli.jsrelative to this directory. Derive the absolute path; do not hard-code~/.claude/.... - Invoke with a single
nodecommand — nocd, no;/&&/|/$(...)/backticks.
Example (substitute the real absolute path):
node /absolute/path/to/skills/nio/scripts/doctor-cli.js
Print its stdout verbatim — it is already formatted markdown.
What Doctor Checks
- Configuration — re-runs schema validation against the live
~/.nio/config.yaml, flagging any field with a path + message. - External analysers — fires each enabled
guard.external_analyserendpoint (OAuth entries do a realclient_credentialsgrant) and reports ✓ with the returned score or ✗ with the underlying error + ahint:line. - LLM analyser — flags
guard.llm_analyser.enabled=truepaired with an emptyapi_key.
Collector reachability is intentionally not probed (OTLP gateways often need routing headers a bare probe wouldn't send). Doctor never writes to the audit log — its probes use a scoped collector discarded after the command returns.
Output Format
A markdown checklist with ✓ / ✗ per check and inline hint: lines, e.g.:
## Nio Doctor
### Configuration
- ✓ ~/.nio/config.yaml loaded successfully
### External Analysers (1 configured)
- ✓ guardrail (https://score.example.com) — score 0.42 [oauth]
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.
- 11d ago First seen · 56 lines · 75 tokens per session scan A 993f4f49ea09
nio-doctor is a skill published in the GitHub repository core0-io/nio (19 stars, last pushed 20d ago), licensed Apache-2.0. It adds 75 tokens to every session and 653 once invoked, about $0.0004 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 2026-08-30.
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