plan-observing-night

plan-observing-night is a skill for Claude Code, Codex from BeppeTemp/cartographer. It costs 25 tokens per session (113 once invoked), scanned A, original, Apache-2.0.

An observing-night planning skill for an astronomy atlas. It checks the observation log, the Moon's phase, and how dark the observing site is before choosing targets and procedures.

In plain words
What is it for?
It is for selecting astronomy targets, scheduling them, choosing observing runbooks, and recording the plan.
Why use it?
It brings the practical conditions for a night of stargazing together so the plan matches what can be observed.

Skill for Claude CodeCodex

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

Good fit It is for selecting astronomy targets, scheduling them, choosing observing runbooks, and recording the plan.

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Install with agentmods
npx agentmods add skills/beppetemp/cartographer/plan-observing-night
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 BeppeTemp/cartographer --skill plan-observing-night
Clone the repo
git clone --depth 1 https://github.com/BeppeTemp/cartographer

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 plan-observing-night

README.md
[![agentmods](https://agentmods.dev/badge/skills/beppetemp/cartographer/plan-observing-night/github.svg)](https://agentmods.dev/skills/beppetemp/cartographer/plan-observing-night)
Your own site
<a href="https://agentmods.dev/skills/beppetemp/cartographer/plan-observing-night"><img src="https://agentmods.dev/badge/skills/beppetemp/cartographer/plan-observing-night/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 plan-observing-night

Your own site · 80×15
<a href="https://agentmods.dev/skills/beppetemp/cartographer/plan-observing-night"><img src="https://agentmods.dev/badge/skills/beppetemp/cartographer/plan-observing-night.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 25 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 113 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 $0.00025 $0.00113
Opus 5.5 $0.00010 $0.00045
Sonnet 5.5 $0.00005 $0.00023
Haiku 4.5 $0.00003 $0.00011

Measured 2d ago against content hash b1df8e0c8af2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

plan-observing-night 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 2d 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.

demo/astronomy/skills/plan-observing-night/SKILL.md · 11 lines

What it actually says

plan-observing-night

  1. Read the observation log for what is still open.
  2. Check the Moon's phase and the site's darkness ([[observing/measuring-sky-brightness]]).
  3. Pick targets and the runbook for each, e.g. [[observing/planning-a-meteor-watch]].
  4. Write the plan as a new entry in the observation log.
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. 2d ago First seen · 11 lines · 25 tokens per session scan A b1df8e0c8af2

Subscribe to this mod's changes

plan-observing-night is a skill published in the GitHub repository BeppeTemp/cartographer (38 stars, last pushed yesterday), licensed Apache-2.0. It adds 25 tokens to every session and 113 once invoked, about $0.0001 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 2026-10-14.