opensession: Skill for Claude Code

.agents/skills/poteto-mode/SKILL.md

poteto-mode is a skill for Claude Code, Codex from tellahq/opensession. It costs 40 tokens per session (183 once invoked), scanned A, original, MIT.

A session mode for handling engineering tasks with small changes, explicit checks, and verification of the resulting work. It can be enabled with `/poteto-mode` and disabled with `/poteto-mode off`.

In plain words
What is it for?
Use it for engineering tasks that need repository inspection, an appropriate work process, incremental changes, and confirmation that the final result works.
Why use it?
It provides a consistent way to investigate, build, review, and ship changes without skipping inspection or verification. It also keeps a short task checklist for non-trivial work.

Skill for Claude CodeCodex

Written for Claude Code: disable-model-invocation in frontmatter. Also seen: installed under .agents/ (shared by several agents).

This is tellahq/opensession's own configuration. It tells Claude Code and Codex how to work on opensession itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything opensession configures →

Reuse

Borrowing it

Nothing to install: this file belongs to tellahq/opensession. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/tellahq/opensession/main/.agents/skills/poteto-mode/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/tellahq/opensession

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 poteto-mode

README.md
[![agentmods](https://agentmods.dev/badge/skills/tellahq/opensession/poteto-mode/github.svg)](https://agentmods.dev/skills/tellahq/opensession/poteto-mode)
Your own site
<a href="https://agentmods.dev/skills/tellahq/opensession/poteto-mode"><img src="https://agentmods.dev/badge/skills/tellahq/opensession/poteto-mode/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 poteto-mode

Your own site · 80×15
<a href="https://agentmods.dev/skills/tellahq/opensession/poteto-mode"><img src="https://agentmods.dev/badge/skills/tellahq/opensession/poteto-mode.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 183 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 pass 7 Sept 2026
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 $0.00040 $0.00183
Opus 5.5 $0.00016 $0.00073
Sonnet 5.5 $0.00008 $0.00037
Haiku 4.5 $0.00004 $0.00018

Measured 1mo ago against content hash 96d4c81d5d02, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

poteto-mode 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.

.agents/skills/poteto-mode/SKILL.md · 14 lines

What it actually says

Poteto mode

Treat the text after /poteto-mode as the task. Poteto mode remains enabled for later turns in this Open Session session. /poteto-mode off disables it. /pstack is the shorter name for the same mode.

Read ../pstack/SKILL.md in full and follow it as the canonical Open Session pstack implementation. Its principles, delegation rules, security boundaries, playbook router, and final-report contract all apply.

This alias never grants tools, credentials, publication rights, or permission for external actions. Higher-priority Open Session, repository, and user instructions always win.

Files

What ships with it

2 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 Changed · -33 lines · +1 tokens per session 96d4c81d5d02
  2. 1mo ago First seen · 47 lines · 39 tokens per session scan A 3f6ba34b0549

Subscribe to this mod's changes

poteto-mode is a skill published in the GitHub repository tellahq/opensession (399 stars, last pushed today), licensed MIT. It adds 40 tokens to every session and 183 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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