get_mod_file_versionsRetrieve all version records for a specific Nexus Mods v3 mod file by providing its mod_file_id, including version numbers, categories, upload dates, and primary status.
Versions of one v3 mod file (id, version, category, upload date, primary).
| Name | Required | Description | Default |
|---|---|---|---|
| mod_file_id | Yes | v3 mod_file id from get_upload_targets |
Changes observed during successful MCP inspections.
v0.1.0Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?
Annotations already declare readOnlyHint, openWorldHint, idempotentHint, and destructiveHint, covering safety. The description adds the fields that will be returned, which is useful, but does not disclose any other behavioral details such as sorting, pagination, or error conditions. It adds a modest amount beyond annotations.
Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.
Is the description appropriately sized, front-loaded, and free of redundancy?
The description is a single concise sentence that front-loads the core purpose and lists the key fields. There is no extraneous information, making it highly efficient.
Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.
Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?
With no output schema, the description compensates by listing the fields returned. It is sufficient for a simple read operation with a single parameter, though it does not mention potential pagination or response format, which would be nice but not critical given the tool's simplicity.
Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.
Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The schema covers 100% of the parameter description, including the mod_file_id and its source (get_upload_targets). The description does not add any additional semantic meaning beyond the schema, so a baseline score of 3 is appropriate.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.
Does the description clearly state what the tool does and how it differs from similar tools?
The description clearly states the tool's function: listing versions of a specific v3 mod file, and enumerates the returned fields (id, version, category, upload date, primary). This distinguishes it from sibling tools like get_mod_file (single file) and get_mod_files (file list for a mod).
Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.
Does the description explain when to use this tool, when not to, or what alternatives exist?
No explicit guidance is provided on when to use this tool versus alternatives. The description only states what it does, without mentioning context or exclusions. The usage is only implied by the tool name and description.
Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.