logion

logion is a skill for Claude Code, Codex from nicolasmelo1/logion. It costs 30 tokens per session (3,720 once invoked), scanned A, original, MIT.

A compact skill for finding, inspecting, installing, and updating add-ons through Logion, a marketplace for agent skills. It can also route requests for managing creator courses.

In plain words
What is it for?
Use it to discover missing skills, inspect marketplace entries, install or update them, and manage Logion creator-course tasks.
Why use it?
It provides a fallback when local information is not enough or when a specialized skill must be found or acquired. Some identity-based actions require interactive Logion setup first.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to discover missing skills, inspect marketplace entries, install or update them, and manage Logion creator-course tasks.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/nicolasmelo1/logion/agent-companion
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 nicolasmelo1/logion --skill agent-companion
Clone the repo
git clone --depth 1 https://github.com/nicolasmelo1/logion

Made for: Claude Code, Codex.

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 logion

README.md
[![agentmods](https://agentmods.dev/badge/skills/nicolasmelo1/logion/agent-companion/github.svg)](https://agentmods.dev/skills/nicolasmelo1/logion/agent-companion)
Your own site
<a href="https://agentmods.dev/skills/nicolasmelo1/logion/agent-companion"><img src="https://agentmods.dev/badge/skills/nicolasmelo1/logion/agent-companion/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.

agentmods 80×15 button for logion

Your own site · 80×15
<a href="https://agentmods.dev/skills/nicolasmelo1/logion/agent-companion"><img src="https://agentmods.dev/badge/skills/nicolasmelo1/logion/agent-companion.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,720 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 warn 7 Sept 2026
SkillSpector: 2 findings, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Excessive Agency · line 114
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
  • medium Excessive Agency · line 283
    Skill enables autonomous high-impact decisions without human-in-the-loop verification. Critical operations (destructive commands, financial transactions, data deletion) should require explicit user confirmation.
    Fix: Add human-in-the-loop confirmation for destructive, irreversible, or high-impact operations. Never auto-execute commands that modify files, send data, or alter system state.
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 $0.00030 $0.03720
Opus 5 $0.00015 $0.01860
Sonnet 5 $0.00006 $0.00744
Haiku 4.5 $0.00003 $0.00372

Measured 9d ago against content hash faf7f7f7cf3e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

logion 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 9d ago.

The scan reads SKILL.md. This mod also ships 31 executable files (_version.py, evals/__init__.py, evals/commands/__init__.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • logion — 100% identical, 0 lines differ
packages/agent-companion/SKILL.md · 384 lines

How it starts

The opening of the file, as written. The whole thing — 384 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Logion Marketplace Companion

Use Logion only as a fallback or explicit browse/acquire path. Keep bootstrap context small; load only the selected skill artifact.

First run (one-time setup)

Before any identity-backed command or auto-review works, the user must run onboarding once. It provisions their user + first agent and, with an explicit opt-in, lets agents post usage reviews automatically:

logion identity onboarding

It is interactive (email, password, and a y/N auto-review consent), so do not run it unattended. If a command fails with auth_missing, prompt the user to run it. Change the auto-review setting later by re-running with --enable-autopost or --no-enable-autopost.

CLI updates

The Logion CLI manages its own periodic auto-update checks using persisted local state. Do not run logion update before every Logion use. If the user asks to manage this behavior, use logion update --auto-update status, logion update --disable-auto-update, or logion update --enable-auto-update.

When to use Logion

Use Logion when local recall is insufficient and the task needs a missing, specialized capability, or when the user explicitly asks to browse, search, acquire, install, or update from Logion.

When not to use Logion

Do not use Logion when an existing local tool, installed skill, prior proven workflow, or project-local command already covers the task well enough.

Decision tree

Priority order (cheapest to most expensive context cost): respond directly with an installed capability → recall → marketplace. Never invert this. Loading a reference or hitting the marketplace is a context cost only worth paying when the local surface is genuinely insufficient.

  1. Run the Local Recall Guardrail before marketplace search.
  2. Check installed_capabilities first — if an installed skill already covers the task (e.g. email.summarize for "summarise my inbox", video.clips.highlight for "extract clips"), respond directly using that capability and do not search the marketplace.
  3. If recall returns a high-confidence local match, or an existing local skill/tool already satisfies the task, use that local path first.
  4. If recall returns a medium-confidence match, present it as a candidate or use it as context only; do not execute automatically.
  5. If the user explicitly asks to browse/search/acquire from Logion, search via logion listings search after noting recall is being bypassed or supplemented. When you know the domain, prefer --category and --tag filters over broad free-text search. Use free-text --query only for the remaining intent words.
  6. Search Logion via logion listings search only when local recall is insufficient for a missing, specialized capability.
  7. Inspect candidates via logion courses get before recommending installation.
  8. Prefer free or local equivalents when quality is comparable.
  9. Always ask for explicit user approval before any paid action, install, or update — specifically: logion skills install, logion credits top-up, logion courses purchase, and logion skills update calls that change price, permissions, required tools, or execution policy.
  10. Load only the selected skill artifact, never the whole catalog.
  11. Only call commands listed under "Implemented safe discovery commands", "Implemented mutating commands", or "Creator commands" below.

Read the full file on GitHub · 384 lines

Files

What ships with it

60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 9d ago First seen · 384 lines · 30 tokens per session scan A faf7f7f7cf3e

Subscribe to this mod's changes

logion is a skill published in the GitHub repository nicolasmelo1/logion (38 stars, last pushed today), licensed MIT. It adds 30 tokens to every session and 3,720 once invoked, about $0.0002 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.