language-skill-required

language-skill-required is an agent for coding agents from lugassawan/swe-workbench. It costs 0 tokens per session (176 once invoked), scanned A, original, MIT.

A rule requiring a coding agent to use a language-specific skill when it reads or changes code in a supported language.

In plain words
What is it for?
It applies to code written in languages such as Python, JavaScript, Go, Rust, SQL, and others listed in the configuration.
Why use it?
It prevents the agent from missing guidance tailored to the language it is working with.

Agent

Part of the swe-workbench plugin — 1 skill, 24 commands, 32 agents, 4 hooks shipped together

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 agents/lugassawan/swe-workbench/language-skill-required
Clone the repo
git clone --depth 1 https://github.com/lugassawan/swe-workbench

Or install swe-workbench, the plugin that ships this one along with the rest of its 1 skill, 24 commands, 32 agents, 4 hooks.

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 language-skill-required

README.md
[![agentmods](https://agentmods.dev/badge/agents/lugassawan/swe-workbench/language-skill-required.svg)](https://agentmods.dev/agents/lugassawan/swe-workbench/language-skill-required)
Your own site
<a href="https://agentmods.dev/agents/lugassawan/swe-workbench/language-skill-required"><img src="https://agentmods.dev/badge/agents/lugassawan/swe-workbench/language-skill-required.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 176 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 $0.00000 $0.00176
Opus 5 $0.00000 $0.00088
Sonnet 5 $0.00000 $0.00035
Haiku 4.5 $0.00000 $0.00018

Measured 3d ago against content hash 66f57ff56194, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

language-skill-required 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 3d 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

  • languages — 86% identical, 29 lines differ
shared/agents/language-skill-required.md · 18 lines

What it actually says

Language skill requirement

A code-touching agent must invoke the language-* skill matching the language of the code it is reading or writing, when one exists for that language. Invoke it via the Skill tool.

  • swe-workbench:language-bash
  • swe-workbench:language-csharp
  • swe-workbench:language-dart
  • swe-workbench:language-go
  • swe-workbench:language-java
  • swe-workbench:language-kotlin
  • swe-workbench:language-python
  • swe-workbench:language-ruby
  • swe-workbench:language-rust
  • swe-workbench:language-sql
  • swe-workbench:language-swift
  • swe-workbench:language-typescript
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. 3d ago First seen · 18 lines · 0 tokens per session scan A 66f57ff56194

Subscribe to this mod's changes

language-skill-required is an agent published in the GitHub repository lugassawan/swe-workbench (2 stars, last pushed 3d ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 176 tokens. 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.