langchain4j-mcp-server-patterns SKILL.md skillA
langchain4j-mcp-server-patterns from giuseppe-trisciuoglio/developer-kit is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add giuseppe-trisciuoglio/developer-kit/langchain4j-mcp-server-patterns@git:20260324.a02e282Pins git:20260324.a02e282 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- giuseppe-trisciuoglio/developer-kit
- Path
plugins/developer-kit-java/skills/langchain4j-mcp-server-patterns/SKILL.md- Versions recorded
- 5
- Latest version
- git:20260324.a02e282, committed Mar 24, 2026
- First version recorded
- Feb 8, 2026
- Size
- 6,327 bytes
- Repository stars
- 367
- License
- MIT
Provides LangChain4j patterns for implementing MCP (Model Context Protocol) servers, creating Java AI tools, exposing tool calling capabilities, and integrating MCP clients with AI services. Use when building a Java MCP server, implementing tool calling in Java, connecting LangChain4j to external MCP servers, or securing tool exposure for agent workflows.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# LangChain4j MCP Server Implementation Patterns ## Overview Use this skill to design and implement Model Context Protocol (MCP) integrations with LangChain4j. The main concerns are: - defining a clean tool, resource, and prompt surface - choosing the right transport and bootstrap model - filtering unsafe capabilities before exposing them to agents or applications Keep `SKILL.md` focused on the implementation flow. Use the bundled references for expanded examples and API-level detail. ## When to Use Use this skill when: - building a Java MCP server that exposes tools, resources, or prompts - integrating LangChain4j with one or more external MCP servers - wiring MCP support into a Spring Boot application - filtering available tools by tenant, user role, or runtime context - adding observability, resilience, and safe failure handling around MCP interactions - reviewing an MCP integration for prompt-injection and side-effect risks Typical trigger phrases include `langchain4j mcp`, `java mcp server`, `mcp tool provider`, `spring boot mcp`, and `connect langchain4j to mcp`. ## Instructions ### 1. Design the MCP surface before writing code Decide what the server should expose: …
Read the whole file at its exact version.
How to install
mdr add giuseppe-trisciuoglio/developer-kit/langchain4j-mcp-server-patterns@sha256:a7d4f5528be9c5f0The line at the top of this page pins the label git:20260324.a02e282, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_4z5ns2m5m6axz4tt)
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Versions
The registry has recorded 5 versions of this file, between Feb 8, 2026 and Mar 24, 2026, about one every 11 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20260324.a02e282 latest | 2026-03-24 | a02e282 | 6,327 B | A | view · diff |
| git:20260323.2528036 | 2026-03-23 | 2528036 | 6,247 B | A | view · diff |
| git:20260228.3187e79 | 2026-02-28 | 3187e79 | 14,852 B | A | view · diff |
| git:20260223.c6d4db1 | 2026-02-23 | c6d4db1 | 14,170 B | A | view · diff |
| v1.1.0 | 2026-02-08 | 147afce | 14,330 B | A | view |
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (6327 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
giuseppe-trisciuoglio/developer-kit · 367 stars · license MIT · pushed 2026-09-10 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4z5ns2m5m6axz4tt GET https://markdownregistry.com/api/v1/resolve?ref=giuseppe-trisciuoglio/developer-kit/langchain4j-mcp-server-patterns GET https://markdownregistry.com/api/v1/blob/a7d4f5528be9c5f0da2830f67c08a39fca1a0bd8f7cc3af5bdc94826d283dd2d
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.