skillit-core

skillit-core is a skill for Claude Code, Codex from pradeepmouli/skillit. It costs 19 tokens per session (863 once invoked), scanned A, original, MIT.

Shared software for skillit plugins that renders SKILL.md files, manages their token size, and handles related reference and documentation files. SKILL.md is the instruction file an AI coding agent reads for a skill.

In plain words
What is it for?
Use it to render extracted skills, write their files, include project documentation, control token budgets, or run quality checks on generated skill content.
Why use it?
It avoids rebuilding the same rendering, file-writing, and documentation checks for every skill plugin.

Skill for Claude CodeCodex

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.

agentmods
npx agentmods add skills/pradeepmouli/skillit/skillit-core
Any agent
npx skills add pradeepmouli/skillit --skill skillit-core
Clone the repo
git clone --depth 1 https://github.com/pradeepmouli/skillit

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 skillit-core

README.md
[![agentmods](https://agentmods.dev/badge/skills/pradeepmouli/skillit/skillit-core.svg)](https://agentmods.dev/skills/pradeepmouli/skillit/skillit-core)
Your own site
<a href="https://agentmods.dev/skills/pradeepmouli/skillit/skillit-core"><img src="https://agentmods.dev/badge/skills/pradeepmouli/skillit/skillit-core.svg" alt="Measured on agentmods" height="20"></a>
Per session 19 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 863 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00019 $0.00863
Opus 5 $0.00010 $0.00432
Sonnet 5 $0.00004 $0.00173
Haiku 4.5 $0.00002 $0.00086

Measured 4d ago against content hash 82d8750c48b9, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skillit-core 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 4d 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.

skills/skillit-core/SKILL.md · 74 lines

How it starts

The opening of the file, as written. The whole thing — 74 lines — stays where its author put it; the contents beside it link to each section on GitHub.

@skillit/core

Shared types, SKILL.md renderer, and token budgeting for skillit plugins

When to Use

  • You have one or more ExtractedSkill objects and need SKILL.md + references/ output
  • Building a custom extraction pipeline that bypasses the TypeDoc plugin
  • You need fine-grained control over rendering a single skill
  • You have RenderedSkill objects from renderSkills() and need to persist them to the filesystem
  • Building a custom pipeline that separates rendering from writing (e.g., for preview or dry-run)
  • You need structured README sections for audit context or skill enrichment
  • The audit engine calls this to check for Features and Troubleshooting sections
  • You want programmatic quality feedback on JSDoc coverage before publishing skills
  • Building a CI gate that blocks PRs with undocumented exports
  • You have hand-written prose docs (tutorials, guides, architecture) in a docs/ directory
  • You want these docs included alongside API skills for richer agent context
  • You have ParsedMarkdownDoc objects from scanDocs() and need to attach them to an ExtractedSkill
  • You want to include well-known root-level markdown files (ARCHITECTURE.md, MIGRATION.md, CONTRIBUTING.md) as documents
  • Supplementing API skills with project-level documentation context
  • You have an examples/ directory alongside source code
  • You want to link example files to the exported symbols they demonstrate
  • You have scanned examples with scanExamples and want to attach them to
  • the relevant exported symbols inside an ExtractedSkill

Avoid when:

  • Rapid local iteration where audit noise slows you down — use the skillsAudit: false option instead
  • Your docs/ directory contains only auto-generated API docs — they duplicate the TypeDoc output
  • Your root directory has many auto-generated or release-tracking markdown files — use explicit include lists instead
  • Your examples are embedded as
  • API surface: 18 functions, 25 types

NEVER

  • NEVER set maxTokens below 500 — reference files become truncated mid-signature, producing broken code blocks that confuse LLMs
  • NEVER pass skills with empty name — the output directory becomes a bare / path
  • NEVER set maxTokens below 500 — reference files become truncated mid-signature, producing broken code blocks

Read the full file on GitHub · 74 lines

Files

What ships with it

3 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. 4d ago First seen · 74 lines · 19 tokens per session scan A 82d8750c48b9

Subscribe to this mod's changes

skillit-core is a skill published in the GitHub repository pradeepmouli/skillit (7 stars, last pushed 18d ago), licensed MIT. It adds 19 tokens to every session and 863 once invoked, about $0.0001 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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