sil-library-reuse

sil-library-reuse is a skill for Claude Code, Codex from sillsdev/FieldWorks. It costs 150 tokens per session (3,656 once invoked), scanned A, original, no licence file.

A FieldWorks development skill that encourages reusing existing SIL libraries, which are shared components from the Summer Institute of Linguistics, before writing new helpers.

In plain words
What is it for?
Tasks involving files and directories, paths, writing systems, keyboards, project caches, localization, LIFT import/export, linked media, or FLExBridge.
Why use it?
It reduces duplicate code and keeps file handling, localization, writing systems, and FieldWorks-specific data operations consistent with existing libraries.

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/sillsdev/fieldworks/sil-library-reuse
Any agent
npx skills add sillsdev/FieldWorks --skill sil-library-reuse
Clone the repo
git clone --depth 1 https://github.com/sillsdev/FieldWorks

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 sil-library-reuse

README.md
[![agentmods](https://agentmods.dev/badge/skills/sillsdev/fieldworks/sil-library-reuse.svg)](https://agentmods.dev/skills/sillsdev/fieldworks/sil-library-reuse)
Your own site
<a href="https://agentmods.dev/skills/sillsdev/fieldworks/sil-library-reuse"><img src="https://agentmods.dev/badge/skills/sillsdev/fieldworks/sil-library-reuse.svg" alt="Measured on agentmods" height="20"></a>
Per session 150 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,656 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00150 $0.03656
Opus 5 $0.00075 $0.01828
Sonnet 5 $0.00030 $0.00731
Haiku 4.5 $0.00015 $0.00366

Measured 5d ago against content hash bbe9c3e5d7b8, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

sil-library-reuse 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 5d 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.

.claude/skills/sil-library-reuse/SKILL.md · 349 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. 5d ago First seen · 349 lines · 150 tokens per session scan A bbe9c3e5d7b8

Subscribe to this mod's changes

sil-library-reuse is a skill published in the GitHub repository sillsdev/FieldWorks (111 stars, last pushed today), with no licence file. It adds 150 tokens to every session and 3,656 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 2026-08-30.

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