JVM Source Lens MCP Server

An MCP server and CLI that gives your coding agent the one thing it's missing on JVM codebases: the actual classpath. Its 7 documented tools cover class, source. It runs locally over stdio via the published package.

People connecting this server to Claude, Cursor, VS Code, or another MCP client. The project is written in TypeScript.

VERIFIED ACTIVE

LAST COMMIT 2026-08-18 · ★ 3 · #197 OF 848 MAINTAINED OTHER · VERIFIED 2026-08-25

MIT · TypeScript servers · how we verify → /methodology

01 · Install JVM Source Lens

before you install - you'll need

REPO_USER, REPO_PASS are optional or environment-specific per the README.

Claude Code

claude mcp add sintexer-jvm-source-lens -- npx -y jvmsrc

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "sintexer-jvm-source-lens": {
      "command": "npx",
      "args": [
        "-y",
        "jvmsrc"
      ]
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as local process (stdio) - runs on your machine with your user's permissions

license MIT - declared in the repository

npm package jvmsrc - unscoped; check the name against the project README before installing

registry namespace io.github.Sintexer is GitHub-verified and matches the repo owner

03 · What JVM Source Lens can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

With this server connected, an agent can find a class by simple name or glob, retrieve class overview (purpose + method names) or declared signatures, fetch real overloads for a method, with parameter names and generics, and retrieve method bodies or line ranges (used as a last resort).

Capability map

Tools grouped from the project's README - what JVM Source Lens lets an agent do.

read & search

6 tools - e.g. Find a class by simple name or glob; returns compact FQN + lib name lists; Retrieves class overview (purpose + method names) or declared signatures; Fetches real overloads for a method, with parameter…

search_classes · get_class_structure · get_method_signature · find_in_class_source · get_class_source · search_in_artifact

Resolve

1 tool - e.g. Analyzes the actual dependency graph this project uses

resolve_dependencies

Latest releases

v1.15.0 · 2026-08-04

1.15.0 (2026-08-04) · enhance class not found messages with hints

v1.14.0 · 2026-08-04

1.14.0 (2026-08-04) · add meaningful error message on failed gradle deps repo access

v1.13.1 · 2026-06-11

1.13.1 (2026-06-11) · fix tsc error

04 · Who maintains JVM Source Lens

JVM Source Lens is maintained by sintexer. It's the only MCP server we track from this author; the repo dates to May 2026.

05 · Facts

repository
github.com/sintexer/jvm-source-lens
website
https://github.com/Sintexer/jvm-source-lens#readme
category
other - ranked #197 of 848 actively-maintained other servers as of 2026-08-25.
release cadence
10+ releases in the last 90 days (latest 2026-08-04)
registry
io.github.Sintexer/jvmsrc (active, first published 2026-05-19 · 16 versions)
packages
npm:jvmsrc

06 · JVM Source Lens FAQ

Is JVM Source Lens still maintained?

Yes - as of 2026-08-25, its last commit was 2026-08-18 and it shipped 10+ releases in the last 90 days. We re-verify nightly.

What can JVM Source Lens do?

With this server connected, an agent can find a class by simple name or glob, retrieve class overview (purpose + method names) or declared signatures, fetch real overloads for a method, with parameter names and generics, and retrieve method bodies or line ranges (used as a last resort).

How do I install JVM Source Lens?

Run `npx -y jvmsrc`. The README documents 2 environment variables (REPO_USER, REPO_PASS) to set first. REPO_USER, REPO_PASS are optional or environment-specific per the README. You can also paste the ready-made client config above.

Does JVM Source Lens run locally?

Yes - it's a stdio server: it runs on your machine (via npx) with your user's permissions. Your data stays local unless the server itself calls external APIs.

07 · Alternatives to JVM Source Lens

Alternatives to JVM Source Lens

Maintained other servers if JVM Source Lens isn't the fit.

  1. Heyputer MCP Server Puter MCP enables AI tools to interact with Puter: manage files, websites, workers, and more ★ 43,204 · 2026-08-24
  2. Server Commands An MCP server to run arbitrary commands ★ 38,704 · 2026-08-05
  3. Zotero MCP (54yyyu) Search, read, annotate, and add to your Zotero research library, local or web. ★ 4,780 · 2026-08-25
  4. Firebase MCP Gives AI development tools Firebase-specific capabilities and expertise. ★ 4,460 · 2026-08-25
  5. Microsoft Fabric MCP Server MCP tools for interacting with Microsoft Fabric ★ 3,598 · 2026-08-21
  6. Ship Swift 40+ production-ready SwiftUI recipes for building full-stack iOS apps via MCP. ★ 2,968 · 2026-08-09

More MCP servers to compare · Vscode Terminal MCP · Ncloud · Leclerc Drive · Slide Forge · Korean Rnd Regs MCP

More TypeScript MCP servers · Sisense MCP Server · Mergewarden · Rekindle · see all