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.
npx skills add MSApps-Mobile/claude-plugins --skill kotlin-lspgit clone --depth 1 https://github.com/MSApps-Mobile/claude-pluginsWrote 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.
[](https://agentmods.dev/skills/msapps-mobile/claude-plugins/kotlin-lsp)<a href="https://agentmods.dev/skills/msapps-mobile/claude-plugins/kotlin-lsp"><img src="https://agentmods.dev/badge/skills/msapps-mobile/claude-plugins/kotlin-lsp.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00077 | $0.00633 |
| Opus 5 | $0.00039 | $0.00316 |
| Sonnet 5 | $0.00015 | $0.00127 |
| Haiku 4.5 | $0.00008 | $0.00063 |
Grade A, and why
kotlin-lsp 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 7d 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.
How it starts
The opening of the file, as written. The whole thing — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Kotlin LSP — kotlin-language-server Integration
Role and Purpose
This plugin's role is to provide real-time code intelligence boundaries for Kotlin projects. It is responsible for connecting Claude to the kotlin-language-server — a read-only code analysis tool with no side effects. Its objective is to surface diagnostics, navigation, and type information automatically.
Workflow
Step 1 — Plan Phase
Before editing Kotlin files, Claude receives LSP diagnostics that inform the plan for changes. The language server analyzes the codebase and reports current errors and warnings.
Step 2 — Act Phase
When Claude writes or edits .kt or .kts files, the LSP server
processes changes and returns updated diagnostics in structured JSON
output via the LSP protocol.
Step 3 — Verify Phase
After each edit, Claude reviews the LSP diagnostics to confirm the change didn't introduce regressions. If errors appear, Claude uses the fallback of reverting or correcting the edit — a fail-safe error handling procedure.
Confirmation Policy
This plugin requires no human confirmation or approval gates because it is a purely read-only analysis tool — it cannot modify files, make network calls, or produce any side effects. All actions are autonomous and safe by design.
Prerequisites
Install the kotlin-language-server tool:
Option 1: Homebrew (macOS)
brew install kotlin-language-server
Option 2: SDKMAN
sdk install kls
Option 3: From GitHub Releases
Download the latest release from fwcd/kotlin-language-server, extract, and add the bin/ directory to your PATH.
Verify the integration is available:
kotlin-language-server --version
Supported File Types
| Extension | Language ID |
|---|---|
.kt |
kotlin |
.kts |
kotlin |
Troubleshooting
- "Executable not found in $PATH" — Install via Homebrew, SDKMAN, or GitHub releases
- No diagnostics appearing — Ensure the project has a
build.gradle.ktsorbuild.gradle - Slow startup — First launch indexes and downloads Gradle dependencies;
startupTimeoutis 30s. Escalation: restart the server if it hangs. - Out of memory — For large Android projects, set
JAVA_OPTS=-Xmx4gas a fallback
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.
- 7d ago First seen · 84 lines · 77 tokens per session scan A 8a2026409a3b
kotlin-lsp is a skill published in the GitHub repository MSApps-Mobile/claude-plugins (9 stars, last pushed 11d ago), licensed MIT. It adds 77 tokens to every session and 633 once invoked, about $0.0004 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.
Other skills, from other repositories
programming-swift
Provides the complete content of 'The Swift Programming Language (6.4 beta)' book by Apple. Use this skill when you need to verify Swift syntax, look up language features, understand concurrency, resolve compiler errors, or consult the formal language reference.
macos-apps
Build professional native macOS apps in Swift with SwiftUI and AppKit. Full lifecycle - build, debug, test, optimize, ship. CLI-only, no Xcode. Use when asked to: create macOS apps, build Swift apps, develop SwiftUI interfaces, fix macOS app issues, add macOS app features, or when user says 'build a Mac app', 'create…
migrating-to-swift-concurrency
Provides the complete Swift Concurrency Migration Guide. Use when migrating to Swift 6, resolving data-race safety errors, understanding Sendable and actor isolation, or incrementally adopting async/await.
programming-swift
Provides the complete content of 'The Swift Programming Language (6.2.1)' book by Apple. Use this skill when you need to verify Swift syntax, look up language features, understand concurrency, resolve compiler errors, or consult the formal language reference.
swiftui-dev
Use this skill for SwiftUI development, architecture, structure, performance, and Apple native app profiling. It combines.
axiom-concurrency
Use when writing ANY async code, actors, threads, or seeing ANY concurrency error. Covers Swift 6 concurrency, @MainActor, Sendable, data races, async/await patterns.