nio-external-score

nio-external-score is a skill for Claude Code from core0-io/nio. It costs 97 tokens per session (773 once invoked), scanned A, original, Apache-2.0.

A tool for checking the current risk scores returned by Nio's configured external scoring services. Nio is a framework that assesses whether AI-agent actions are safe.

In plain words
What is it for?
Use it when you need to see your current Nio or guardrail scores from external scoring endpoints.
Why use it?
It gives you a current snapshot of those external scores without running Nio's other configuration or language-model checks.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter. Also seen: reads .claude/ paths.

Part of the nio plugin — 7 skills, 8 hooks shipped together

Good fit Use it when you need to see your current Nio or guardrail scores from external scoring endpoints.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/core0-io/nio/nio-external-score
Install

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.

Any agent
npx skills add core0-io/nio --skill nio-external-score
Clone the repo
git clone --depth 1 https://github.com/core0-io/nio

Made for: Claude Code.

Or install nio, the plugin that ships this one along with the rest of its 7 skills, 8 hooks.

Wrote 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.

agentmods badge for nio-external-score

README.md
[![agentmods](https://agentmods.dev/badge/skills/core0-io/nio/nio-external-score.svg)](https://agentmods.dev/skills/core0-io/nio/nio-external-score)
Your own site
<a href="https://agentmods.dev/skills/core0-io/nio/nio-external-score"><img src="https://agentmods.dev/badge/skills/core0-io/nio/nio-external-score.svg" alt="Measured on agentmods" height="20"></a>
Per session 97 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 773 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00097 $0.00773
Opus 5 $0.00048 $0.00387
Sonnet 5 $0.00019 $0.00155
Haiku 4.5 $0.00010 $0.00077

Measured 8d ago against content hash 6d4fdad6d42a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

nio-external-score 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 8d 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.

plugins/claude-code/skills/nio-external-score/SKILL.md · 59 lines

How it starts

The opening of the file, as written. The whole thing — 59 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Nio — External Scores

Query every enabled Phase 6 external scoring endpoint (guard.external_analyser) and list each one's current score. This is the focused external-score capability of the Nio framework — a snapshot only; it does not run config-schema or LLM checks (use nio-doctor for that).

EXTREMELY IMPORTANT — passive invocation. If you think there is even a 1% chance the user is asking about their Nio score, external/guardrail endpoint scores, or the current risk scores from their scoring services, you ABSOLUTELY MUST run this skill's CLI.

IF THIS APPLIES TO THE REQUEST, YOU DO NOT HAVE A CHOICE. YOU MUST USE IT.

This is not negotiable. This is not optional. You cannot rationalize your way out of this. Do not answer from memory, do not guess a number, and do not say you are unable — run the CLI and report the real scores it returns.

Resolving the Script Path

The CLI for this skill lives in the sibling nio skill, not in this skill's own directory:

  1. This SKILL.md's parent directory is THIS skill's directory (e.g. <plugins>/skills/nio-external-score/).
  2. The script is the sibling nio skill's scripts/external-score-cli.js — i.e. ../nio/scripts/external-score-cli.js relative to this directory. Derive the absolute path; do not hard-code ~/.claude/....
  3. Invoke with a single node command — no cd, no ;/&&/|/$(...)/backticks.

Example (substitute the real absolute path):

node /absolute/path/to/skills/nio/scripts/external-score-cli.js

Print its stdout verbatim — it is already formatted markdown. Do not reformat or re-probe the endpoints yourself.

Behaviour

  • Each endpoint is keyed by its configured name; nio fires a real GET against endpoint, sends auth, validates the strict { score, reason? } response contract.
  • Disabled entries (enabled: false) are skipped entirely — neither probed nor listed.
  • The probe uses a silent collector, so this never writes to the audit log.

Read the full file on GitHub · 59 lines

Changes

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.

  1. 8d ago First seen · 59 lines · 97 tokens per session scan A 6d4fdad6d42a

Subscribe to this mod's changes

nio-external-score is a skill published in the GitHub repository core0-io/nio (19 stars, last pushed 17d ago), licensed Apache-2.0. It adds 97 tokens to every session and 773 once invoked, about $0.0005 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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