cronalert-mcp

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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=false, covering safety and scope. The description adds useful context about optional filtering and pagination, which are behavioral traits not captured in annotations. However, it doesn't mention rate limits, authentication needs, or what happens with large result sets beyond pagination.

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 sentence that front-loads the core purpose ('List all uptime monitors') and then succinctly adds optional features. Every word earns its place with zero redundancy or unnecessary elaboration.

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 read-only list tool with good annotations and full schema coverage, the description is reasonably complete. It covers the core functionality and optional features. The main gap is the lack of output schema, so the description doesn't explain return values (e.g., structure of monitor objects), but this is mitigated by the tool's simplicity and clear annotations.

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 100%, with clear parameter descriptions in the schema itself. The description adds marginal value by mentioning the optional filtering and pagination, but doesn't provide additional semantics beyond what the schema already documents (e.g., format details or usage examples). Baseline 3 is appropriate given high schema coverage.

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 verb ('List') and resource ('all uptime monitors'), making the purpose immediately understandable. It distinguishes from other list operations by specifying the resource type (monitors vs incidents or status pages). However, it doesn't explicitly differentiate from 'get_monitor' which retrieves a single monitor, leaving some sibling ambiguity.

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 implied usage through the optional filtering parameters (status and pagination), suggesting when to use these features. However, it doesn't explicitly state when to use this tool versus alternatives like 'get_monitor' (single monitor) or 'get_check_results' (detailed results), nor does it mention any prerequisites or exclusions.

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