stepback

stepback is a skill for Claude Code, Codex from anombyte93/atlas-session-lifecycle. It costs 55 tokens per session (1,286 once invoked), scanned A, original, MIT.

A troubleshooting guide for stepping back and reconsidering the system design when repeated fixes do not solve a problem.

In plain words
What is it for?
Use it after the same error returns, several related errors appear, local and deployed behavior differ, or infrastructure configuration is changing.
Why use it?
It helps avoid repeatedly patching symptoms when the real cause is architectural or shared across components.

Skill for Claude CodeCodex

Part of the atlas-session-lifecycle plugin — 6 skills shipped together

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.

agentmods
npx agentmods add skills/anombyte93/atlas-session-lifecycle/stepback
Any agent
npx skills add anombyte93/atlas-session-lifecycle --skill stepback
Clone the repo
git clone --depth 1 https://github.com/anombyte93/atlas-session-lifecycle

Made for: Claude Code, Codex.

Or install atlas-session-lifecycle, the plugin that ships this one along with the rest of its 6 skills.

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 stepback

README.md
[![agentmods](https://agentmods.dev/badge/skills/anombyte93/atlas-session-lifecycle/stepback.svg)](https://agentmods.dev/skills/anombyte93/atlas-session-lifecycle/stepback)
Your own site
<a href="https://agentmods.dev/skills/anombyte93/atlas-session-lifecycle/stepback"><img src="https://agentmods.dev/badge/skills/anombyte93/atlas-session-lifecycle/stepback.svg" alt="Measured on agentmods" height="20"></a>
Per session 55 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,286 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00055 $0.01286
Opus 5 $0.00028 $0.00643
Sonnet 5 $0.00011 $0.00257
Haiku 4.5 $0.00006 $0.00129

Measured 4d ago against content hash 3246b1a7eee6, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

stepback 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 4d 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.

skills/stepback/SKILL.md · 135 lines

How it starts

The opening of the file, as written. The whole thing — 135 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Stepback - Strategic Reassessment

Core principle: If you've tried 2+ fixes for the same class of problem, you're probably patching symptoms. Stop. Zoom out. Research the architecture.

When to Trigger

digraph stepback {
  "Fix attempt failed?" [shape=diamond];
  "Is this the 2nd+ attempt?" [shape=diamond];
  "Same root system?" [shape=diamond];
  "Keep debugging" [shape=box];
  "STOP — Run /stepback" [shape=box, style=bold];

  "Fix attempt failed?" -> "Is this the 2nd+ attempt?" [label="yes"];
  "Fix attempt failed?" -> "Keep debugging" [label="no, first try"];
  "Is this the 2nd+ attempt?" -> "Same root system?" [label="yes"];
  "Is this the 2nd+ attempt?" -> "Keep debugging" [label="no"];
  "Same root system?" -> "STOP — Run /stepback" [label="yes"];
  "Same root system?" -> "Keep debugging" [label="different systems"];
}

Symptoms that demand /stepback:

  • Same error returns after a "fix"
  • Fix A reveals error B reveals error C (cascade)
  • Locally it works, deployed it doesn't
  • Multiple components broken by the same underlying cause
  • Fixes feel like whack-a-mole

Proactive triggers (don't wait for failure):

  • Touching deployment config, build pipeline, or infrastructure
  • Changing middleware, routing, or auth at the platform level
  • Modifying next.config.js, vercel.json, Dockerfile, CI/CD

Execution

STEP 1 — Stop and Inventory

List every fix attempt so far in this session. For each:

  • What symptom it addressed
  • Whether it worked or revealed a new symptom
  • What assumption it was based on

Present this to the user as a table:

| # | Fix | Symptom | Result | Assumption |
|---|-----|---------|--------|------------|
| 1 | Added route to middleware whitelist | 405 on webhook | Still 405 | Middleware was blocking |
| 2 | Replaced parseBody with manual HMAC | 500 crash | Still 500 | parseBody incompatible |
| 3 | ... | ... | ... | ... |

STEP 2 — Find the Common Thread

Ask: "What system do ALL of these symptoms share?"

Read the full file on GitHub · 135 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. 4d ago First seen · 135 lines · 55 tokens per session scan A 3246b1a7eee6

Subscribe to this mod's changes

stepback is a skill published in the GitHub repository anombyte93/atlas-session-lifecycle (88 stars, last pushed 1mo ago), licensed MIT. It adds 55 tokens to every session and 1,286 once invoked, about $0.0003 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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