sky

sky is a skill for Claude Code from darshjoshi/skyglance-mcp. It costs 148 tokens per session (2,387 once invoked), scanned A, original, MIT.

A set of tools for finding and identifying aircraft around the world, including planes flying overhead. It uses your location to tell you what to look for in the sky.

In plain words
What is it for?
Use it to see what is overhead, track a flight, inspect an airport, identify an aircraft, view its earlier route, or find military, emergency, private, and unusual aircraft.
Why use it?
It removes the guesswork from identifying a plane or finding out whether anything is nearby. Your location must be provided or configured because the results depend on where you are.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the skyglance plugin — 1 skill, 1 MCP server shipped together

Good fit Use it to see what is overhead, track a flight, inspect an…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/darshjoshi/skyglance-mcp/sky
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 darshjoshi/skyglance-mcp --skill sky
Clone the repo
git clone --depth 1 https://github.com/darshjoshi/skyglance-mcp

Made for: Claude Code.

Or install skyglance, the plugin that ships this one along with the rest of its 1 skill, 1 MCP server.

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 sky

README.md
[![agentmods](https://agentmods.dev/badge/skills/darshjoshi/skyglance-mcp/sky.svg)](https://agentmods.dev/skills/darshjoshi/skyglance-mcp/sky)
Your own site
<a href="https://agentmods.dev/skills/darshjoshi/skyglance-mcp/sky"><img src="https://agentmods.dev/badge/skills/darshjoshi/skyglance-mcp/sky.svg" alt="Measured on agentmods" height="20"></a>
Per session 148 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,387 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 $0.00148 $0.02387
Opus 5 $0.00074 $0.01193
Sonnet 5 $0.00030 $0.00477
Haiku 4.5 $0.00015 $0.00239

Measured 6d ago against content hash d8fbbf0147e2, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

sky 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 6d 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.

plugins/skyglance/skills/sky/SKILL.md · 171 lines

How it starts

The opening of the file, as written. The whole thing — 171 lines — stays where its author put it; the contents beside it link to each section on GitHub.

What's flying above you — powered by SkyGlance

You are helping someone look at the sky. Most people asking have never spotted a plane deliberately. Get them real data, then tell them where to point their face and whether it's worth going outside.

First: do you know where they are?

Every location-based tool falls back to SKYGLANCE_HOME_LAT/LON. If those aren't set and the user hasn't said where they are, ask. Do not guess a city from context — a wrong location returns a completely different sky, confidently.

Tool routing

Question Tool
"What's flying over me?" / "anything up there?" whats_overhead
"What's about to fly over?" coming_overhead
"What's the closest plane?" nearest_aircraft
"What is that plane?" / a hex, rego or callsign identify_aircraft
"Where is flight UA123?" track_flight
"Where has this plane been today?" / "what route did it fly?" track_history
"What's happening at Newark / EGLL?" airport_activity
"Who is JBU / BAW?" / callsign prefix airline_info
"Any blocked or private aircraft?" privacy_blocked_aircraft
"Any military aircraft?" military_aircraft
"Any emergencies?" / "anyone squawking 7700?" emergencies
"Any A380s / 747s / An-124s airborne?" find_by_type
"How many BA / Emirates flights are up?" fleet_view
"Any 747s above 40,000 ft?" / any filter combination search_aircraft
"How many planes are in the air right now?" global_stats
"Which airports are busiest right now?" busiest_airports
"Anything interesting?" / "worth going outside?" interesting_nearby
"Can I see anything tonight?" viewing_conditions
"Are the feeds working?" feed_health
"Have I seen this plane before?" is_this_new or sighting_history
"What's my closest ever?" / records my_records
"How many have I seen?" spotting_stats
"Is it recording?" poller_status

Reading the numbers out loud

Read the full file on GitHub · 171 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. 6d ago First seen · 171 lines · 148 tokens per session scan A d8fbbf0147e2

Subscribe to this mod's changes

sky is a skill published in the GitHub repository darshjoshi/skyglance-mcp (0 stars, last pushed 1mo ago), licensed MIT. It adds 148 tokens to every session and 2,387 once invoked, about $0.0007 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 2026-08-31.

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