nio-report

nio-report is a skill for Claude Code from core0-io/nio. It costs 72 tokens per session (722 once invoked), scanned A, original, Apache-2.0.

A read-only report of recent Nio agent-execution activity from its audit log.

In plain words
What is it for?
Use it to inspect recent audit events, see what Nio blocked or confirmed, and summarize reported diagnostics.
Why use it?
It makes blocked actions, confirmations, diagnostics, and errors easier to review without changing Nio settings or activity.

Skill for Claude Code

Written for Claude Code: user-invocable in frontmatter.

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

Good fit Use it to inspect recent audit events, see what Nio blocked or confirmed, and summarize reported diagnostics.

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

README.md
[![agentmods](https://agentmods.dev/badge/skills/core0-io/nio/nio-report.svg)](https://agentmods.dev/skills/core0-io/nio/nio-report)
Your own site
<a href="https://agentmods.dev/skills/core0-io/nio/nio-report"><img src="https://agentmods.dev/badge/skills/core0-io/nio/nio-report.svg" alt="Measured on agentmods" height="20"></a>
Per session 72 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 722 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 $0.00072 $0.00722
Opus 5 $0.00036 $0.00361
Sonnet 5 $0.00014 $0.00144
Haiku 4.5 $0.00007 $0.00072

Measured 8d ago against content hash 5cbc17be0813, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

nio-report 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-report/SKILL.md · 61 lines

How it starts

The opening of the file, as written. The whole thing — 61 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Nio — Execution Report

Display recent agent execution events from the Nio audit log. This is the focused report capability of the Nio framework.

Passive invocation. If the user asks what Nio blocked/confirmed recently, to see the audit log / recent activity, or for a diagnostics summary, you MUST read and format the audit log as below.

This skill uses the Read tool only — there is no script to run. Do not attempt to invoke any report.js / report-cli.js — none exist. The only action is: read ~/.nio/audit.jsonl with the Read tool, parse each line as JSON, and format the output as shown below.

Log Location

The audit log is stored at ~/.nio/audit.jsonl (or $NIO_HOME/audit.jsonl). Each line is a JSON object with an event discriminator field: guard (one per tool-call evaluation), session_scan, lifecycle, diagnostic.

A diagnostic entry carries source (one of config, oauth, llm, external_analyser, collector, scanner, hook), kind, severity, component, message, optional hint. Aggregate diagnostics by (source, kind, component, config_path) into a Diagnostics summary section. Old-format lines (no event field) are guard entries with event_type: "pre".

How to Display

  1. Read ~/.nio/audit.jsonl using the Read tool
  2. Parse each line as JSON
  3. Filter by event type — guard entries in the main table, scan entries in a separate section
  4. Show recent events (last 50 by default)
  5. If any events have initiating_skill, add a "Skill Activity" section grouping events by skill

Output Format

## Nio Execution Report

**Events**: <total count>
**Blocked**: <deny count>
**Confirmed**: <confirm count>

### Recent Events

| Time | Tool | Type | Decision | Risk | Score | Phase | Top Finding | Skill |
|------|------|------|----------|------|-------|-------|-------------|-------|
| 14:30 | Bash | exec | DENY | critical | 0.95 | 2 | DANGEROUS_COMMAND | some-skill |

### Diagnostics

| Count | Source | Kind | Component |
|-------|--------|------|-----------|
| 2 | oauth | token_failed | scorer_primary |

### Summary
<Brief analysis of agent execution behaviour and any patterns of concern>

Read the full file on GitHub · 61 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 · 61 lines · 72 tokens per session scan A 5cbc17be0813

Subscribe to this mod's changes

nio-report is a skill published in the GitHub repository core0-io/nio (19 stars, last pushed 17d ago), licensed Apache-2.0. It adds 72 tokens to every session and 722 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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