Maven Version Server

compare_versions

Compare Maven dependency versions to identify upgrade paths between current and target releases, suggesting compatible updates.

Instructions

Compare two versions and suggest an upgrade path

Tool call template

Replace each placeholder with a value matching the input schema. Only required parameters are included; add optional parameters as needed.

{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "tools/call",
  "params": {
    "arguments": {
      "dependency": "<dependency>",
      "currentVersion": "<currentVersion>"
    },
    "name": "compare_versions"
  }
}

Input Schema

Name	Required	Description
`dependency`	Yes	Maven coordinate in format "groupId:artifactId" (e.g., "org.springframework:spring-core")
`currentVersion`	Yes	The version you are currently using (e.g., "5.3.20")
`targetVersion`	No	Optional: The version you want to upgrade to. If not provided, suggests the latest stable.

Schema Changelog

Changes observed during successful MCP inspections.

First observedv1.0.0Jan 15, 2026

TDQS

B3.2/5.0

Behavior2/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

No annotations are provided, so the description carries full burden. It mentions 'suggest an upgrade path' but doesn't disclose behavioral traits such as what data sources are used for comparison, whether suggestions include intermediate versions or breaking changes, error handling for invalid inputs, or performance/rate limits. This leaves gaps in understanding the tool's operation.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

The description is a single, efficient sentence that front-loads the core functionality ('compare two versions and suggest an upgrade path') with zero redundant information. It's appropriately sized for the tool's complexity, making it easy to parse quickly.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness2/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

Given the tool's complexity (version comparison with upgrade suggestions), lack of annotations, and no output schema, the description is incomplete. It doesn't explain what the upgrade path includes (e.g., step-by-step versions, compatibility notes), potential outputs, or error conditions. This inadequately supports an agent in understanding the tool's full behavior and results.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema description coverage is 100%, so the schema fully documents parameters (dependency, currentVersion, targetVersion). The description adds minimal value beyond the schema by implying the tool compares versions and suggests upgrades, but doesn't provide additional semantic context like format constraints or interaction effects between parameters. Baseline 3 is appropriate as the schema handles parameter documentation.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

The description clearly states the tool's purpose with specific verbs ('compare' and 'suggest an upgrade path') and identifies the resource ('two versions'). It distinguishes from siblings like 'check_version_exists' (verification) and 'get_all_versions' (listing), though it could be more explicit about the comparison scope (e.g., dependency compatibility).

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description implies usage for version comparison and upgrade planning, but lacks explicit guidance on when to use this tool versus alternatives like 'get_latest_stable_version' (which might provide target versions) or prerequisites. It suggests an optional 'targetVersion' but doesn't clarify trade-offs between specifying it or relying on the tool's suggestion.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.

Deploy Server