starmapper: Skill for Claude Code

.agents/skills/runtime-cache/SKILL.md

runtime-cache is a skill for Claude Code, Codex from FlorianBruniaux/starmapper. It costs 43 tokens per session (2,307 once invoked), scanned A, original, no licence file.

A guide to Vercel Runtime Cache, a temporary key-value store for data shared across regions and Vercel functions, middleware, and builds. It covers cache strategies beyond the caching built into a web framework.

In plain words
What is it for?
Use it when implementing runtime caching with cache tags, especially across functions, routing middleware, and builds.
Why use it?
It helps developers decide how to store, share, and invalidate temporary data in Vercel applications.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing. Also seen: installed under .agents/ (shared by several agents).

This is FlorianBruniaux/starmapper's own configuration. It tells Claude Code and Codex how to work on starmapper 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 starmapper configures →

Reuse

Borrowing it

Nothing to install: this file belongs to FlorianBruniaux/starmapper. 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/FlorianBruniaux/starmapper/main/.agents/skills/runtime-cache/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/FlorianBruniaux/starmapper

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 runtime-cache

README.md
[![agentmods](https://agentmods.dev/badge/skills/florianbruniaux/starmapper/runtime-cache/github.svg)](https://agentmods.dev/skills/florianbruniaux/starmapper/runtime-cache)
Your own site
<a href="https://agentmods.dev/skills/florianbruniaux/starmapper/runtime-cache"><img src="https://agentmods.dev/badge/skills/florianbruniaux/starmapper/runtime-cache/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 runtime-cache

Your own site · 80×15
<a href="https://agentmods.dev/skills/florianbruniaux/starmapper/runtime-cache"><img src="https://agentmods.dev/badge/skills/florianbruniaux/starmapper/runtime-cache.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,307 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00043 $0.02307
Opus 5.5 $0.00017 $0.00923
Sonnet 5.5 $0.00009 $0.00461
Haiku 4.5 $0.00004 $0.00231

Measured 1mo ago against content hash 22fb4be9b3b2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

runtime-cache scanned grade A with 1 finding 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

async fetch(request: Request) {
.agents/skills/runtime-cache/SKILL.md · 283 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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 First seen · 283 lines · 43 tokens per session scan A 22fb4be9b3b2

Subscribe to this mod's changes

runtime-cache is a skill published in the GitHub repository FlorianBruniaux/starmapper (90 stars, last pushed 16d ago), with no licence file. It adds 43 tokens to every session and 2,307 once invoked, about $0.0002 per session on Opus 5.5. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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