scm-mcp

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

With no annotations provided, the description carries full burden but offers minimal behavioral disclosure. It states this is a creation tool (implying mutation) but doesn't mention permission requirements, whether changes are immediate or require commit, error conditions, rate limits, or what the tool returns. For a 14-parameter creation tool with zero annotation coverage, this is inadequate.

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 well-structured with a brief purpose statement followed by organized parameter documentation. Each parameter explanation is concise yet informative. While slightly lengthy due to 14 parameters, every sentence earns its place by adding semantic value not present in the schema.

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?

For a complex creation tool with 14 parameters, no annotations, and no output schema, the description is incomplete. While parameter semantics are well-covered, it lacks crucial context about the creation process: what permissions are needed, whether a commit is required, what the return value contains, error handling, and how this integrates with the broader SCM workflow. The parameter documentation is strong, but overall completeness is insufficient.

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?

With 0% schema description coverage, the description fully compensates by providing detailed parameter explanations beyond just names. It clarifies defaults ('any', False, null), gives nat_type enum values, provides concrete examples for complex parameters (source_translation, destination_translation), and explains optional vs required parameters. This adds substantial value over the bare schema.

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 creates a NAT rule, specifying the verb 'Create' and resource 'NAT rule'. It distinguishes itself from siblings like 'scm_update_nat_rule' and 'scm_delete_nat_rule' by its creation purpose, but doesn't explicitly contrast with other rule types like security or PBF rules.

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?

The description provides no guidance on when to use this tool versus alternatives. It doesn't mention prerequisites (e.g., existing zones, addresses), when NAT rules are appropriate versus other rule types, or what happens after creation (e.g., need for commit). With many sibling tools available, this lack of context is a significant gap.

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