maven-indexer-mcp
Indexes local Maven and Gradle caches to enable AI agents to search for Java classes, method signatures, and source code, including from internal or obscure libraries.
Caution. Specific findings reduced this grade. They are listed on the page. Grades reflect the full trust pyramid: code, verification depth, and reputation. New projects cap at C until adoption is earned.
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tangcent
Source: Glama
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The grade above is for the source repository. Registries can serve a different version, so we mark the ones we were not able to read.
These names and descriptions are the publisher's own, read from the source code. We print them as written. Our assessment is the findings above, not this list.
get_class_detailsRetrieve the source code for a class from the local Maven/Gradle cache (containing internal company libraries). This tool identifies the containing artifact and returns the source code. It prefers actual source files but will fall back to decompilation if necessary. Use this primarily for internal c…
search_artifactsSearch for internal company artifacts and libraries in the local Maven repository and Gradle caches by coordinate (groupId, artifactId), keyword, or class name. Use this primarily for internal company packages or to find available versions of internal projects that are locally built. Also supports s…
search_classesSearch for Java classes in internal company libraries found in the local Maven/Gradle caches. Essential for finding classes in internal company libraries that are not part of the current workspace source code. Use this when you see an import (e.g., 'com.company.util.Helper') but cannot find the defi…
search_implementationsSearch for internal implementations of an interface or base class. This is particularly useful for finding implementations of SPIs or base classes within internal company libraries in the local Maven/Gradle cache. Supports batch queries.
search_resourcesSearch for resources (non-class files) inside JARs, such as properties files, XML configs, or proto files.
refresh_indexTrigger a re-scan of the Maven repository. This will re-index all artifacts.
Disclosed vulnerabilities in this server's declared npm dependencies (via OSV). Whether each is reachable depends on the installed versions.
When Vitest UI server is listening, arbitrary file can be read and executed
@modelcontextprotocol/sdk has cross-client data leak via shared server/transport instance reuse
Anthropic's MCP TypeScript SDK has a ReDoS vulnerability
yauzl contains an off-by-one error
DB_FILEGRADLE_REPO_PATHAbsolute path to your Gradle cache (e.g.,GRADLE_USER_HOMEINCLUDED_PACKAGESComma-separated list of package patterns to index (e.g., com.mycompany.,org.example.).JAVA_HOMEJAVA_PATHM2_HOMEMAVEN_INDEXER_CFR_PATH(Optional) Absolute path to a specific CFR decompiler JAR. If not provided, the serverMAVEN_REPOAbsolute path to your local Maven repository (e.g., /Users/yourname/.m2/repository). Use this ifMAVEN_REPO_PATHVERSION_RESOLUTION_STRATEGY(Optional) Strategy to choose the version when multiple versions of an artifact are found and no specific coordinate is provided.Tool annotations
No tools have read-only/destructive annotations
Add readOnlyHint or destructiveHint annotations to every tool so hosts can warn users before invoking.
All four hints declared on every tool
6/6 tools missing one or more hints — get_class_details (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_artifacts (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint); search_classes (missing: readOnlyHint, destructiveHint, idempotentHint, openWorldHint), +3 more. OpenAI's directory rejects tools where any of the four hints are missing or non-boolean.
For every tool, set all four hints (readOnlyHint, destructiveHint, idempotentHint, openWorldHint) to explicit true/false values that match the handler’s actual behaviour.
Tool inputs are validated
5/6 tool handlers declare input schemas (83%)
Declare an inputSchema with zod/joi/yup on every tool definition.
Tool handlers catch errors
Only 1/6 tool handlers wrap calls in try/catch (17%)
Wrap each tool handler body in try/catch and return a structured error response.
Tool test coverage
3/6 tools referenced in tests (50%)
Write tests that reference each tool by name so every tool has at least one test.
Shell command execution
3 child_process calls — runs shell commands
Prefer library functions over shell-outs. If you must shell out, ensure all inputs are properly escaped.
Production dependencies are patched
0 critical, 2 high severity in production deps — @modelcontextprotocol/sdk@1.24.3 (high), @modelcontextprotocol/sdk@1.24.3 (high)
Run npm audit fix, or upgrade the affected packages to a non-vulnerable version.
Dev dependencies
1 critical/high in dev-only deps (does not ship to users)
Upgrade dev dependencies when convenient.
Dependency freshness
1/10 production deps stale: xml2js@2024-05-31 (2y)
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