Kotlin & Java Library Sources MCP server

by aoreshkov·io.github.aoreshkov/kotlin-lib-mcp·v0.10.1·13 stars

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Kotlin/Java library sources, public API and KDoc from the real Maven sources jar, for AI agents

A88/100grade A

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A88/100

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13 stars

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If you have run it, two minutes of your experience saves the next person an afternoon.

Kotlin & Java Library Sources tools

No tool declarations could be read from the package source. They show once the server is installed.

Not scanned yet. New listings are scanned within a day or two of arriving.

How Kotlin & Java Library Sources compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score: 88/100; higher than 75% of 48,255 servers
GitHub stars: 13; more than 89% of 28,688 servers

Release history: 7 versions in the registry since 2026-09-12, latest 2026-10-29, typically one every 6 days.

Install Kotlin & Java Library Sources in Claude Code, Cursor or VS Code

claude mcp add kotlin-lib-mcp -- docker run -i --rm ghcr.io/aoreshkov/kotlin-lib-mcp:0.10.1

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What the publisher says

From the Kotlin & Java Library Sources repository's README, as published. We do not edit it. Read it on GitHub

kotlin-lib-mcp

Give your AI agent the real sources of any Maven-published Kotlin/Java library.

An MCP server that, on request, downloads the sources of a library (e.g. io.ktor:ktor-client-core:3.5.1), parses them with the Kotlin Analysis API (standalone K2/FIR mode), and exposes structured information — public API surface, KDoc, dependencies/metadata, raw source + search — to MCP clients: Claude Code, Claude Desktop, IntelliJ IDEA (AI Assistant / Junie), VS Code and GitHub Copilot. An optional Compose Desktop dashboard runs the same server in-process.

Eleven tools — fetchlibrary · listpackages · listdeclarations · getapisignature · getkdoc · getsource · searchsource · diffversions · getdependencies · listversions · getlatest_version — plus MCP resources and a prompt.

Those install the Docker image. For Claude Code, IntelliJ IDEA, or to run the release zip without Docker, see Quick start.

Compose Desktop dashboard

Why this and not a docs-lookup server?

Most documentation MCP servers scrape rendered doc sites or feed the model pre-digested summaries. This one works from the published sources jar — the ground truth:

Shortened. The full README is on GitHub.

Nothing above is checked by us. What we check is on the safety report.

Kotlin & Java Library Sources: common questions

Is Kotlin & Java Library Sources MCP server safe?: Yes, by our scan: it is graded A (88/100). Read the Kotlin & Java Library Sources safety report
How do I install Kotlin & Java Library Sources?: It runs on your machine. Copy the Claude Code, Cursor, VS Code or Claude Desktop config from the install section.
Does Kotlin & Java Library Sources need an API key?: Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Kotlin & Java Library Sources maintained?: The last commit was 33 days ago (2026-10-02). The latest release is v0.10.1.
How does Kotlin & Java Library Sources compare with other MCP servers?: safety score 88/100 (higher than 75% of 48,255 servers); github stars 13 (more than 89% of 28,688 servers). Full comparison.