AWS Customer Playbook Advisor MCP

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

With no annotations provided, the description carries full burden but provides minimal behavioral context. It mentions retrieving 'latest' playbooks which implies freshness, but doesn't disclose authentication requirements, rate limits, error conditions, response format, or whether this is a read-only operation. For a tool with no annotation coverage, this is insufficient.

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, efficient Japanese sentence that gets straight to the point with zero wasted words. It's appropriately sized for the tool's apparent complexity and front-loads the core functionality.

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 tool with no annotations and no output schema, the description is incomplete. It doesn't explain what format the playbooks are returned in, whether there's pagination, error handling, or authentication requirements. Given the security context and lack of structured metadata, more behavioral disclosure would be expected.

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 description doesn't add any parameter information beyond what's already in the schema (which has 100% coverage). It doesn't explain the relationship between 'scenario' and 'playbook_name', provide additional examples, or clarify edge cases. With complete schema coverage, the baseline 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 action ('取得します' - retrieves) and resource ('AWS公式プレイブックフレームワークから最新のセキュリティプレイブック' - latest security playbooks from AWS official playbook framework). It distinguishes from 'list_available_playbooks' by specifying retrieval of actual content rather than listing, but doesn't explicitly differentiate from 'get_prevention_guidance' which might provide different types of guidance.

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 the sibling tools 'get_prevention_guidance' or 'list_available_playbooks'. It doesn't specify prerequisites, constraints, or alternative scenarios where other tools would be more appropriate.

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