What is semdex-mcp-server CLAUDE.md?

Repository instructions for Semdex, a local server that indexes code into searchable pieces such as functions, classes, and interfaces for AI coding assistants.

Use them when developing Semdex, including its command-line tool, code parser, local database, embeddings, and file watcher.

They explain the project structure, supported technologies, and coding rules contributors need to follow.

How raghavwahi/semdex-mcp-server configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to raghavwahi/semdex-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/raghavwahi/semdex-mcp-server/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/raghavwahi/semdex-mcp-server

Made for: Claude Code.

Wrote this? Show the measurements

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README.md

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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.

Your own site · 80×15

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Per session 1,569 This file is loaded in full into every session.

When invoked 1,569 The same file — it is already loaded in full.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01569	$0.01569
Opus 5.5	$0.00628	$0.00628
Sonnet 5.5	$0.00314	$0.00314
Haiku 4.5	$0.00157	$0.00157

Measured 2mo ago against content hash 657471b3f539, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

semdex-mcp-server CLAUDE.md 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 2mo 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.md · 127 lines

How it starts

The opening of the file, as written. The whole thing — 127 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Semdex — Project Instructions

@/Users/raghavwahi/.claude/RTK.md

Project Overview

Semdex (semantic + index) is a local MCP server that gives AI coding assistants structured, queryable intelligence about a codebase. It parses repos into semantic chunks (functions, classes, interfaces), indexes them in SQLite with vector embeddings, and exposes MCP tools for LLM agents to query.

Think of it as an LSP, but for AI — instead of "go to definition" for humans, it's "find all relevant code" for an LLM.

Technology Stack

Layer	Choice	Constraint
Runtime	Node.js 22 LTS	Do NOT use APIs that require 23+
Language	TypeScript 5.x	Strict mode, no `any` without justification
CLI	Commander.js	One entry point: `src/cli.ts` → `sdx` binary
AST	Tree-sitter WASM	NOT native bindings. `Language.load()` from `.wasm` files
DB	better-sqlite3 + sqlite-vec	`sqliteVec.load(db)` — NOT `node:sqlite` (23.5+)
Hashing	hash-wasm	`xxhash3()` for content hashing
Embedding	Transformers.js v3.x	`Xenova/all-MiniLM-L6-v2`, q8 quantized, max 256 tokens input
Watcher	Chokidar	`awaitWriteFinish: true`, ignore `node_modules`
Telemetry	OpenTelemetry JS	Custom `FileSpanExporter`, manual instrumentation only
MCP SDK	@modelcontextprotocol/sdk	v1.29.0 (`@release-1.29.0`). Do NOT use v2 alpha
Testing	Vitest	In-memory SQLite for DB tests, no external deps

Architecture

src/
├── cli.ts              # Commander.js entry point
├── server.ts            # McpServer + tool registration
├── indexer/
│   ├── parser.ts        # Tree-sitter WASM → AST
│   ├── chunker.ts       # AST → canonical semantic nodes
│   ├── hasher.ts        # XXH3 content hashing
│   └── embedder.ts      # Transformers.js pipeline
├── db/
│   ├── connection.ts    # better-sqlite3 + sqlite-vec
│   ├── schema.ts        # Migration framework (PRAGMA user_version)
│   └── queries.ts       # Typed SQL query builders
├── tools/
│   ├── symbol.ts        # symbol.find, symbol.callers
│   ├── search.ts        # search.semantic, search.lexical
│   ├── repo.ts          # repo.manifest, repo.architecture
│   └── index.ts         # index.status, code.read
└── telemetry/
    ├── tracer.ts        # OpenTelemetry setup
    └── file-exporter.ts # Custom FileSpanExporter (~50 lines)

Read the full file on GitHub · 127 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.

2mo ago First seen · 127 lines · 1,569 tokens per session scan A 657471b3f539

Subscribe to this mod's changes

semdex-mcp-server CLAUDE.md is an instructions file published in the GitHub repository raghavwahi/semdex-mcp-server (0 stars, last pushed 3mo ago), licensed MIT. It adds 1,569 tokens to every session, about $0.0063 per session on Opus 5.5. 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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semdex-mcp-server: Instructions file for Claude Code