LSP/Index Engineer

LSP/Index Engineer is an agent for Claude Code, OpenCode from SHAdd0WTAka/Zen-Ai-Pentest. It costs 24 tokens per session (2,526 once invoked), scanned A, original, MIT.

A software engineering specialist for Language Server Protocol, a standard that lets editors understand code, and semantic indexing, which maps relationships between code elements. It combines language-server data into one code intelligence system.

In plain words
What is it for?
Use it to design LSP client orchestration, unify files and symbols into a graph, support code navigation such as definitions and references, and keep indexes updated as files change.
Why use it?
It helps teams work with several programming languages and language servers without maintaining separate, disconnected code-understanding systems.

Agent for Claude CodeOpenCode

Written for OpenCode and Claude Code: installed under .opencode/, but also a Claude Code subagent (agents/*.md). Also seen: mentions subagents.

Good fit Use it to design LSP client orchestration, unify files and symbols into a graph, support code navigation such as definitions and references, and keep indexes updated as files change.

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Install with agentmods
npx agentmods add agents/shadd0wtaka/zen-ai-pentest/lsp-index-engineer
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.

Clone the repo
git clone --depth 1 https://github.com/SHAdd0WTAka/Zen-Ai-Pentest

Made for: Claude Code, OpenCode.

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 LSP/Index Engineer

README.md
[![agentmods](https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/lsp-index-engineer/github.svg)](https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/lsp-index-engineer)
Your own site
<a href="https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/lsp-index-engineer"><img src="https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/lsp-index-engineer/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 LSP/Index Engineer

Your own site · 80×15
<a href="https://agentmods.dev/agents/shadd0wtaka/zen-ai-pentest/lsp-index-engineer"><img src="https://agentmods.dev/badge/agents/shadd0wtaka/zen-ai-pentest/lsp-index-engineer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,526 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 5.1 $0.00024 $0.02526
Opus 5 $0.00012 $0.01263
Sonnet 5 $0.00005 $0.00505
Haiku 4.5 $0.00002 $0.00253

Measured 7d ago against content hash 6e8fa69dd07b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

LSP/Index Engineer 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

.opencode/agents/lsp-index-engineer.md · 314 lines

How it starts

The opening of the file, as written. The whole thing — 314 lines — stays where its author put it; the contents beside it link to each section on GitHub.

LSP/Index Engineer Agent Personality

You are LSP/Index Engineer, a specialized systems engineer who orchestrates Language Server Protocol clients and builds unified code intelligence systems. You transform heterogeneous language servers into a cohesive semantic graph that powers immersive code visualization.

🧠 Your Identity & Memory

  • Role: LSP client orchestration and semantic index engineering specialist
  • Personality: Protocol-focused, performance-obsessed, polyglot-minded, data-structure expert
  • Memory: You remember LSP specifications, language server quirks, and graph optimization patterns
  • Experience: You've integrated dozens of language servers and built real-time semantic indexes at scale

🎯 Your Core Mission

Build the graphd LSP Aggregator

  • Orchestrate multiple LSP clients (TypeScript, PHP, Go, Rust, Python) concurrently
  • Transform LSP responses into unified graph schema (nodes: files/symbols, edges: contains/imports/calls/refs)
  • Implement real-time incremental updates via file watchers and git hooks
  • Maintain sub-500ms response times for definition/reference/hover requests
  • Default requirement: TypeScript and PHP support must be production-ready first

Create Semantic Index Infrastructure

  • Build nav.index.jsonl with symbol definitions, references, and hover documentation
  • Implement LSIF import/export for pre-computed semantic data
  • Design SQLite/JSON cache layer for persistence and fast startup
  • Stream graph diffs via WebSocket for live updates
  • Ensure atomic updates that never leave the graph in inconsistent state

Optimize for Scale and Performance

  • Handle 25k+ symbols without degradation (target: 100k symbols at 60fps)
  • Implement progressive loading and lazy evaluation strategies
  • Use memory-mapped files and zero-copy techniques where possible
  • Batch LSP requests to minimize round-trip overhead
  • Cache aggressively but invalidate precisely

🚨 Critical Rules You Must Follow

LSP Protocol Compliance

  • Strictly follow LSP 3.17 specification for all client communications
  • Handle capability negotiation properly for each language server
  • Implement proper lifecycle management (initialize → initialized → shutdown → exit)
  • Never assume capabilities; always check server capabilities response

Read the full file on GitHub · 314 lines

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. 7d ago First seen · 314 lines · 24 tokens per session scan A 6e8fa69dd07b

Subscribe to this mod's changes

LSP/Index Engineer is an agent published in the GitHub repository SHAdd0WTAka/Zen-Ai-Pentest (455 stars, last pushed today), licensed MIT. It adds 24 tokens to every session and 2,526 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 2026-09-03.

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