competlab-mcp-server

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

No annotations are provided, so the description carries the full burden. It appropriately discloses 'Read-only' status (critical safety information) and 'Returns JSON object' (return format). Minor gap: does not mention error behavior or rate limits, but adequately covers essential behavioral traits for a retrieval tool.

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?

Three efficient sentences with zero waste: sentence 1 states purpose and scope, sentence 2 provides usage guidelines with examples, sentence 3 covers prerequisites and behavioral traits. Information is appropriately front-loaded.

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?

Complete for a 2-parameter retrieval tool: mentions return format (JSON object) despite no output schema, lists example fields (homepage URL, pricing page URL), and covers all necessary workflow dependencies. Slight gap: could specify error cases for invalid IDs.

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 coverage is 100%, establishing a baseline of 3. The description adds valuable workflow context by explicitly stating that competitorId comes 'from list_competitors' (and implies projectId sourcing similarly), helping the agent understand the dependency chain beyond bare parameter definitions.

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 uses a specific verb ('Get') and resource ('competitor details'), and explicitly distinguishes from the sibling tool list_competitors by stating it provides details 'beyond what list_competitors provides' and noting the dependency on competitorId from that tool.

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?

Excellent explicit guidance: states 'Use this when you need specific competitor metadata beyond what list_competitors provides' with a concrete example ('to find which URLs are being tracked'), and clearly notes the prerequisite 'Requires competitorId from list_competitors'.

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