mcp-sessionize: Instructions file for Claude Code

CLAUDE.md

mcp-sessionize CLAUDE.md is an instructions file for Claude Code from labjp-mcp/mcp-sessionize. It costs 1,517 tokens per session, scanned A, original, Apache-2.0.

Project instructions for developing mcp-sessionize, an MCP server that provides event data such as speakers, sessions, and schedules to AI assistants. They document Java and Maven commands, tests, native builds, and CI behavior.

In plain words
What is it for?
Use them when running development mode, unit tests, verification, native packaging, Docker builds, or a single test or method.
Why use it?
They give the agent the project’s expected commands and rules, reducing mistakes when building, testing, or changing the server.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is labjp-mcp/mcp-sessionize's own configuration. It tells Claude Code how to work on mcp-sessionize itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything mcp-sessionize configures →

Reuse

Borrowing it

Nothing to install: this file belongs to labjp-mcp/mcp-sessionize. 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/labjp-mcp/mcp-sessionize/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/labjp-mcp/mcp-sessionize

Made for: Claude Code.

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.

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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.

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Per session 1,517 This file is loaded in full into every session.
When invoked 1,517 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.01517 $0.01517
Opus 5.5 $0.00607 $0.00607
Sonnet 5.5 $0.00303 $0.00303
Haiku 4.5 $0.00152 $0.00152

Measured 2mo ago against content hash 6376a6192bf9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

mcp-sessionize 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 · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Qué es

Servidor MCP (Model Context Protocol) que expone datos de eventos de Sessionize (speakers, sesiones, agenda) como herramientas y prompts para asistentes IA. Construido con Quarkus 3.33.2 + Java 25 + Quarkus MCP Server 1.13.0 (combo certificada por la doc oficial del MCP server). Se distribuye como ejecutable nativo (Mandrel) y vía npx mcp-sessionize.

Comandos

./mvnw quarkus:dev          # Dev mode (HTTP habilitado, log DEBUG, live reload)
./mvnw verify               # Build + tests (lo que corre CI)
./mvnw test                 # Solo unit tests
./mvnw package -Dnative     # Ejecutable nativo (requiere Mandrel/GraalVM)
docker build -t mcp-sessionize .   # Imagen nativa multi-stage

# Un solo test / método
./mvnw test -Dtest=SessionizeToolTest
./mvnw test -Dtest=SessionizeToolTest#findSpeaker_returnsMatch

Usar siempre el wrapper ./mvnw. CI (.github/workflows/ci.yml) ejecuta ./mvnw verify con Java 25 (temurin) y, en push a main, publica la imagen a ghcr.io.

⚠️ JAVA_HOME local: mvnw prioriza JAVA_HOME sobre el java del PATH. El proyecto requiere Java 25 (maven.compiler.release=25, module imports + el flag --sun-misc-unsafe-memory-access de .mvn/jvm.config, que solo existe desde Java 23). Si JAVA_HOME apunta a Java ≤21 el build falla con Unrecognized option. Forzar el JDK correcto, p.ej.:

JAVA_HOME="$HOME/.sdkman/candidates/java/current" ./mvnw verify   # con sdkman 25-graalce

Arquitectura

Tres capas, todas en el paquete canónico io.mcp.sessionize:

  • client/SessionizeClient — interfaz REST Client de MicroProfile (@RegisterRestClient(configKey = "sessionize")) contra https://sessionize.com/api/v2/{eventId}/view/{Speakers|Sessions|GridSmart}. Fuerza headers no-cache.
  • model/SessionizeModel — clase sellada con records inmutables anidados (Speaker, Session, SessionGroup, GridDay, etc.) que mapean el JSON de la API.
  • tool/SessionizeTool — herramientas MCP (@Tool). Los métodos Java son getSpeakers, findSpeaker, getSessionsBySpeaker, getSessions, findSession, getSchedule, pero el nombre MCP registrado lleva prefijo de servicio vía @Tool(name = "sessionize_…") (evita colisiones con otros servers). Todas llevan @Tool.Annotations(readOnlyHint=true, idempotentHint=true, openWorldHint=true) — son de solo-lectura contra una API externa; mantener prefijo + hints al añadir tools. Las tools de listado (get_speakers, find_speaker, get_sessions, find_session) aceptan limit/offset y devuelven metadata de paginación vía el helper paginate.
  • prompt/SessionizePrompt — plantillas MCP (@Prompt): event_overview, find_speaker_info, sessions_by_topic, conference_schedule, speaker_sessions, recommend_sessions.

Read the full file on GitHub · 60 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. 2mo ago First seen · 60 lines · 1,517 tokens per session scan A 6376a6192bf9

Subscribe to this mod's changes

mcp-sessionize CLAUDE.md is an instructions file published in the GitHub repository labjp-mcp/mcp-sessionize (4 stars, last pushed 26d ago), licensed Apache-2.0. It adds 1,517 tokens to every session, about $0.0061 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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