aristotle

aristotle is a skill for Claude Code, Codex from alexwwang/aristotle. It costs 209 tokens per session (1,433 once invoked), scanned A, original, MIT.

An error-reflection and learning workflow activated with /aristotle after someone reports a mistake or incorrect result.

In plain words
What is it for?
Use it to reflect on an agent's previous answer, review a numbered session, or start a learning workflow.
Why use it?
It provides a defined way to review what went wrong and learn from corrections.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; mentions Claude Code; mentions OpenCode.

Good fit Use it to reflect on an agent's previous answer, review a numbered session, or start a learning workflow.

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

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 aristotle

README.md
[![agentmods](https://agentmods.dev/badge/skills/alexwwang/aristotle/skill/github.svg)](https://agentmods.dev/skills/alexwwang/aristotle/skill)
Your own site
<a href="https://agentmods.dev/skills/alexwwang/aristotle/skill"><img src="https://agentmods.dev/badge/skills/alexwwang/aristotle/skill/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 aristotle

Your own site · 80×15
<a href="https://agentmods.dev/skills/alexwwang/aristotle/skill"><img src="https://agentmods.dev/badge/skills/alexwwang/aristotle/skill.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 209 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,433 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: 1 finding, 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 Rogue Agent · line 3
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 $0.00209 $0.01433
Opus 5.5 $0.00084 $0.00573
Sonnet 5.5 $0.00042 $0.00287
Haiku 4.5 $0.00021 $0.00143

Measured 2mo ago against content hash 08d7579f9e51, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

aristotle 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 2mo 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.

skill/SKILL.md · 98 lines

How it starts

The opening of the file, as written. The whole thing — 98 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Aristotle — Dispatcher

CRITICAL: DO NOT load REFLECT.md, REVIEW.md, LEARN.md, or CHECKER.md. All logic is handled by MCP orchestration tools. NEVER mention internal mechanism names (MCP tool names, action names, workflow_id, prompt fields) to the user — describe outcomes in plain language only.

ROUTE

cmd = first argument or ""
MATCH cmd:
  "learn"    → CALL orchestrate_start("learn", args_json) → execute ACTION
  "sessions" → CALL orchestrate_start("sessions", "{}") → execute ACTION
  "review"   → CALL orchestrate_start("review", {sequence: N}) → execute ACTION → REVIEW FEEDBACK
  *          → GOTO PRE-RESOLVE

PRE-RESOLVE (reflect only)

result = CALL orchestrate_start("reflect", {target_session_id: "", session_file: "",
  focus: "last", user_language: <detect>, project_directory: <cwd>})

MATCH result.action:
  "fire_sub"  → Bridge handles snapshot. execute ACTION. STOP.
  "pre_resolve_needed" → GOTO SNAPSHOT-EXTRACT
  "notify"    → Display result.message. STOP.
  other       → execute ACTION. STOP.

## SNAPSHOT-EXTRACT (non-Bridge / Claude Code only)
IF session_list is available:
  target_session_id = session_list()[0].id
  content = session_read(target_session_id)
  Bash("mkdir -p ~/.config/opencode/aristotle-sessions")
  Write snapshot JSON (schema v1, source: "llm-session-read") to
    ~/.config/opencode/aristotle-sessions/{target_session_id}_snapshot.json
  session_file = that path
ELSE:
  session_file = ""
IF any step fails: session_file = ""

result = CALL orchestrate_start("reflect", {target_session_id, session_file,
  focus: "last", user_language: <detect>, project_directory: <cwd>})
→ execute ACTION. STOP.

ACTION EXECUTION

If action is pre_resolve_needed:

GOTO SNAPSHOT-EXTRACT (in PRE-RESOLVE section above).

If action is fire_o:

  1. Call task(category="unspecified-low", run_in_background=true, prompt=o_prompt)
  2. When notification arrives, call MCP orchestrate_on_event("o_done", {workflow_id, result})
  3. Execute returned action per this section

Read the full file on GitHub · 98 lines

Files

What ships with it

5 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. 2mo ago First seen · 98 lines · 209 tokens per session scan A 08d7579f9e51

Subscribe to this mod's changes

aristotle is a skill published in the GitHub repository alexwwang/aristotle (18 stars, last pushed 2mo ago), licensed MIT. It adds 209 tokens to every session and 1,433 once invoked, about $0.0008 per session on Opus 5.5. 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.

Related

aristotle compared with skills from other repositories

aristotle next to 6 skills from other repositories
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aristotlealexwwang/aristotleSkill182mo agoMITA209Claude Code, Codex
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