JVM Source Lens

io.github.Sintexer/jvmsrc·v1.13.1·Other

Gradle-accurate JVM classpath; fetch Java source, signatures, and class structure for agents.

In-path gate · all MCP tools

Using JVM Source Lens in Claude, Cursor, Gemini CLI, Cline, or Zed?

MCP tool contracts can change remotely with no version bump. The mcpindex gate pins each contract and HOLDs the call when it drifts—before your agent acts. Zero credentials. This is not the package install for this server itself (use Install this server for that).

Install the mcpindex gate (one command)

Rewrites your MCP host config so each server launches behind the gate. Inspect first: curl -fsSL https://mcpindex.ai/install.sh | less

curl -fsSL https://mcpindex.ai/install.sh | sh

Auditable install path →Watch it hold a drift →

Trust verdict · v1 advisory · method

REVIEWstatus: PARTIALfresh until 2026-08-02 16:03 UTC

screened 2026-07-03tier: scannedgranularity: description-levelsource: registry

Semantic screen found no manipulation pattern in the description. Conformance probe not yet run.

mcpindex.integrity.descriptionpassINFO

evidence“Fetches Java source and class structure only”via static_description

Limits of this verdict

- Semantic screen only - the deterministic conformance probe has not run on this server
- Confidence is reported but not yet calibrated (v1)
- Screen reads the tool description, not the live behavior
- advisory
- registry description only no input schema
- screen model 8b

Semantic screen: an LLM judge reads the tool description for hidden instructions (status PARTIAL). A pass means the description is not lying, not that the tool is safe: a high-capability tool with an honest description still warrants caution. The deterministic conformance probe has not been run on this server yet, so the screen here is semantic-only. Posture: advisory. Confidences are reported but not yet calibrated (calibrated=false at v1). Full verdict history is not shown on this page.

Own this server? Screen its description →

Embed this badge

A live verdict badge for your README or listing. It reflects the current screen, links back here, and updates when the verdict does.

Markdown

[![mcpindex](https://mcpindex.ai/api/v1/badge/io-github-sintexer-jvmsrc)](https://mcpindex.ai/server/io-github-sintexer-jvmsrc)

HTML

<a href="https://mcpindex.ai/server/io-github-sintexer-jvmsrc"><img src="https://mcpindex.ai/api/v1/badge/io-github-sintexer-jvmsrc" alt="mcpindex verdict" height="20" /></a>

Environment variables

JVMSRC_ALLOWED_ROOTS

Optional comma-separated absolute paths; only these project roots are allowed.

JVMSRC_CACHE_ROOT

Optional absolute path for resolution and decompile caches (default: OS cache dir).

JVMSRC_LOG_DIR

Optional absolute path for failure diagnostic logs.

JVMSRC_MAX_SOURCE_OUTPUT_CHARS

Max characters returned for full-file source (default 524288).

JVMSRC_GRADLE_TIMEOUT_MS

Gradle resolution subprocess timeout in milliseconds.

JVMSRC_CFR_PATH

Optional path to a custom CFR JAR for decompilation.

MCP quality score · maturity, not trust · methodology

freshness

completeness

installability

documentation

stability

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Install this server

Claude Desktop (claude_desktop_config.json)

{
  "mcpServers": {
    "jvmsrc": {
      "command": "npx",
      "args": [
        "-y",
        "jvmsrc"
      ],
      "env": {
        "JVMSRC_ALLOWED_ROOTS": "<jvmsrc_allowed_roots>",
        "JVMSRC_CACHE_ROOT": "<jvmsrc_cache_root>",
        "JVMSRC_LOG_DIR": "<jvmsrc_log_dir>",
        "JVMSRC_MAX_SOURCE_OUTPUT_CHARS": "<jvmsrc_max_source_output_chars>",
        "JVMSRC_GRADLE_TIMEOUT_MS": "<jvmsrc_gradle_timeout_ms>",
        "JVMSRC_CFR_PATH": "<jvmsrc_cfr_path>"
      }
    }
  }
}

Cursor (.cursor/mcp.json)

{
  "mcpServers": {
    "jvmsrc": {
      "command": "npx",
      "args": [
        "-y",
        "jvmsrc"
      ],
      "env": {
        "JVMSRC_ALLOWED_ROOTS": "<jvmsrc_allowed_roots>",
        "JVMSRC_CACHE_ROOT": "<jvmsrc_cache_root>",
        "JVMSRC_LOG_DIR": "<jvmsrc_log_dir>",
        "JVMSRC_MAX_SOURCE_OUTPUT_CHARS": "<jvmsrc_max_source_output_chars>",
        "JVMSRC_GRADLE_TIMEOUT_MS": "<jvmsrc_gradle_timeout_ms>",
        "JVMSRC_CFR_PATH": "<jvmsrc_cfr_path>"
      }
    }
  }
}

Cline (cline_mcp_settings.json)

npx -y jvmsrc

Claude Code (claude mcp add)

claude mcp add --scope user jvmsrc -- npx -y jvmsrc

Gemini CLI (gemini mcp add)

gemini mcp add -s user jvmsrc npx -y jvmsrc

Verdict API

curl -s mcpindex.ai/api/v1/trust/server/io-github-sintexer-jvmsrc

Free-tier verdict as JSON: decision + dimensions + severity. Call it from your agent before it invokes a tool it just discovered.

Details

version: v1.13.1
category: Other
verdict expires: 2026-08-02
quality: 95 / 100
operator: Sintexer

Provenance

Verdict history is anchored to Bitcoin via OpenTimestamps. The anchor proof is public and any skeptic can recompute it offline.

Links

Repository →Website →