introspection

introspection is a skill for Claude Code, Codex from tkellogg/open-strix. It costs 60 tokens per session (2,098 once invoked), scanned A, original, MIT.

A diagnostic skill for examining an agent’s event logs, journal entries, message history, and scheduled jobs. It uses these records to understand what happened and why.

In plain words
What is it for?
Use it to debug agent behavior, review past actions, inspect scheduled tasks, and investigate communication issues.
Why use it?
It helps separate verified events from an agent’s own notes or possibly outdated memory when investigating a problem.

Skill for Claude CodeCodex

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

Good fit Use it to debug agent behavior, review past actions, inspect scheduled tasks, and investigate communication issues.

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

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 introspection

README.md
[![agentmods](https://agentmods.dev/badge/skills/tkellogg/open-strix/introspection/github.svg)](https://agentmods.dev/skills/tkellogg/open-strix/introspection)
Your own site
<a href="https://agentmods.dev/skills/tkellogg/open-strix/introspection"><img src="https://agentmods.dev/badge/skills/tkellogg/open-strix/introspection/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 introspection

Your own site · 80×15
<a href="https://agentmods.dev/skills/tkellogg/open-strix/introspection"><img src="https://agentmods.dev/badge/skills/tkellogg/open-strix/introspection.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 60 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,098 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 Agent Snooping · line 121
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
  • medium Agent Snooping · line 179
    Skill enumerates or reads other installed skills. Access to other skills' SKILL.md files or the skills directory reveals prompt instructions, capabilities, and secrets that should be invisible to peer skills.
    Fix: Remove all code or instructions that list or read other skills' files or directories. Skills should operate independently; cross-skill access is a privilege escalation.
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 $0.00060 $0.02098
Opus 5.5 $0.00024 $0.00839
Sonnet 5.5 $0.00012 $0.00420
Haiku 4.5 $0.00006 $0.00210

Measured 1mo ago against content hash 238a139087b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

introspection 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 1mo 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.

open_strix/builtin_skills/introspection/SKILL.md · 205 lines

How it starts

The opening of the file, as written. The whole thing — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Introspection

You are a stateful agent. Your behavior leaves traces in structured logs. This skill teaches you to read those traces to diagnose problems, understand your own patterns, and improve.

Source of Truth Hierarchy

  1. logs/events.jsonl — Ground truth. Every tool call, error, and scheduler event is recorded here with timestamps and session IDs.
  2. logs/journal.jsonl — Your interpretation of what happened. Useful for intent and predictions, but it's narrative, not fact.
  3. Discord message history — What was actually sent and received. Use list_messages to verify.
  4. scheduler.yaml — Current scheduled job definitions.
  5. Memory blocks — Your current beliefs about the world. May be stale.

When sources conflict, trust events > Discord history > journal > memory blocks.

Key Log Schemas

events.jsonl

Each line is a JSON object:

{
  "timestamp": "2026-03-01T12:00:00+00:00",
  "type": "tool_call",
  "session_id": "abc123",
  "tool": "send_message",
  "channel_id": "123456",
  "sent": true,
  "text_preview": "first 300 chars..."
}

Common event types:

  • tool_call — Any tool invocation (check tool field for which one)
  • tool_call_error — A tool that failed (check error_type)
  • send_message_loop_detected — Circuit breaker caught repeated messages
  • send_message_loop_hard_stop — Turn terminated for safety
  • scheduler_reloaded — Jobs were reloaded from scheduler.yaml
  • scheduler_invalid_job — A job failed validation
  • scheduler_invalid_cron — Bad cron expression
  • scheduler_invalid_time — Bad time_of_day value

journal.jsonl

Each line:

{
  "timestamp": "2026-03-01T12:00:00+00:00",
  "session_id": "abc123",
  "channel_id": "123456",
  "user_wanted": "what the human asked for",
  "agent_did": "what you actually did",
  "predictions": "what you think will happen next"
}

scheduler.yaml

jobs:
  - name: my-job
    prompt: "Do the thing"
    cron: "0 */2 * * *"        # OR time_of_day, not both
    channel_id: "123456"       # optional

Read the full file on GitHub · 205 lines

Files

What ships with it

3 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. 1mo ago First seen · 205 lines · 60 tokens per session scan A 238a139087b0

Subscribe to this mod's changes

introspection is a skill published in the GitHub repository tkellogg/open-strix (93 stars, last pushed 2mo ago), licensed MIT. It adds 60 tokens to every session and 2,098 once invoked, about $0.0002 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.

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