traverse

traverse is a skill for Claude Code, Codex from HuginnIndustries/CodeCartographer. It costs 90 tokens per session (1,679 once invoked), scanned A, original, MIT.

A supervised workflow for making a bounded software change through intake, planning, implementation, observation, review, and human acceptance. It records evidence so work can resume after a session ends or another agent takes over.

In plain words
What is it for?
Use it to track fixes, features, refactors, migrations, or investigations through a resumable engineering process and present the result for human approval.
Why use it?
It replaces ad-hoc edits with a repeatable record of what was requested, attempted, observed, and accepted. It does not run builds, tests, or migrations; the developer or agent must do that.

Skill for Claude CodeCodex

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

Good fit Use it to track fixes, features, refactors, migrations, or investigations through a resumable engineering process and present the result for human approval.

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Install with agentmods
npx agentmods add skills/huginnindustries/codecartographer/traverse
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 HuginnIndustries/CodeCartographer --skill traverse
Clone the repo
git clone --depth 1 https://github.com/HuginnIndustries/CodeCartographer

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 traverse

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

Your own site · 80×15
<a href="https://agentmods.dev/skills/huginnindustries/codecartographer/traverse"><img src="https://agentmods.dev/badge/skills/huginnindustries/codecartographer/traverse.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,679 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.
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 $0.00090 $0.01679
Opus 5.5 $0.00036 $0.00672
Sonnet 5.5 $0.00018 $0.00336
Haiku 4.5 $0.00009 $0.00168

Measured 9d ago against content hash 8c5e28d93a05, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

traverse 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.

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.

.codecarto/skills/traverse/SKILL.md · 144 lines

How it starts

The opening of the file, as written. The whole thing — 144 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Traverse: the supervised change loop

You are working on a change that CodeCartographer is keeping records for. This document is the procedure. It is prose, and prose is not enforcement — the refusals described here live in core/engineering/, and this document can only tell you what they are. If this text and the code ever disagree, the code wins and this document is a bug.

What this loop is for

A change moves through a fixed shape: intake, plan, attempt, observe, review, accept. The records exist so that a session that dies in the middle can be picked up by a different agent, on a different machine, a week later, and reach the same next action. That only works if you write down what you did.

CodeCartographer never executes anything. It does not run your build, your tests, or your migration. You do. It records what you report and refuses conclusions the records do not support.

Intake

Before any work: a change record must exist, with a mode (fix, feature, refactor, migration, investigation), a requested outcome in plain words, and a baseline that identifies what you started from.

A fix asserts a defect exists. If you have not confirmed the defect — seen it fail, not merely been told it fails — the honest mode is investigation. Recording a fix for a defect nobody confirmed is how a change gets accepted for solving a problem that was never there.

Readiness

The next step is decided by planTraverseStep in core/engineering/: from the records and the bounds and capability you declare, it names one action. No codecarto_change action and no Pi command calls it yet. Over MCP, read the records with show and the gate's verdict with gate, and take the next action in the order this document describes; a host that embeds the library calls the planner directly. Either way, before you take a step, check what the loop needs against what you actually have:

  • Bounds. The loop refuses to plan at all unless you declare max_attempts (a positive integer) and max_wall_clock_ms (a positive finite number). There is no default. A loop that picks a limit for you hides that you never picked one — and a bound that cannot bound is worse than a missing one, because it reads as a limit in the step you get back. NaN, Infinity, zero and negatives are refused.
  • Execution. If you cannot run the work, say so (can_execute: false) and the loop stops instead of asking you to attempt something you cannot do.
  • A human. If you have no way to reach a person for a decision, say so (can_obtain_human_decision: false). The loop will stop at the point a human is required rather than proceeding without one.

Read the full file on GitHub · 144 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. 9d ago Changed · +5 lines 8c5e28d93a05
  2. 24d ago First seen · 139 lines · 90 tokens per session scan A 95338bebd57a

Subscribe to this mod's changes

traverse is a skill published in the GitHub repository HuginnIndustries/CodeCartographer (6 stars, last pushed 9d ago), licensed MIT. It adds 90 tokens to every session and 1,679 once invoked, about $0.0004 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 2026-09-22.

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