Create GitHub Milestone

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

Annotations already declare readOnlyHint=false, idempotentHint=false, destructiveHint=false and openWorldHint=true, so the safety profile is covered. The description adds no behavioral detail at all — notably it never warns that a non-idempotent create called twice produces duplicate milestones, nor that title is not a required parameter. For a mutation tool this is thin.

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?

A single tight, front-loaded sentence with no filler. It is efficient, though its brevity is partly a symptom of under-specification rather than disciplined editing.

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?

An output schema exists, so return values need not be described. However, with six parameters and zero marked required, the definition should clarify that title is effectively mandatory and how duplicates are handled; neither is covered.

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?

Schema description coverage is 83%, so the baseline is 3. The description contributes no parameter meaning beyond what the schema states; the one undocumented parameter (use_test_db) is left unexplained in both places.

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 gives a specific verb+resource ('Create a new GitHub milestone') and adds the intent ('tracking progress toward a project goal'). It is clearly distinct from get_github_milestone, update_github_milestone and delete_github_milestone by name alone, though it never explicitly contrasts them.

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?

There is no guidance on when to reach for this tool versus get_github_milestones, update_github_milestone, or create_github_issue_with_entry. Nothing is said about prerequisites (repo/owner resolution, existing milestone names, permissions).

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