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

With no annotations, the description carries the full burden and does well: it discloses the auth mechanism (X-API-Key, with an api_key argument fallback when headers are unsupported) and an access-tier constraint (paid plan required; verification-only plans excluded). It does not state pagination behavior or the default/limit caps, but those live in the schema.

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?

Front-loaded with the core purpose, then the selection constraint, then prerequisites and auth in descending priority. Every sentence carries information, though the auth/header sentence is slightly tangential to the primary call decision.

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 10-parameter read tool with no annotations and no output schema, the description covers the essentials an agent needs: what is returned, the mutually exclusive id params, access tier, and auth. It stops short of describing the return shape or sort/pagination defaults, but the schema documents those.

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 already 100%, so baseline is 3, but the description adds real meaning: it explains that project_id aggregates across all vaults while vault_id scopes to one, and it clarifies the api_key fallback beyond the schema's terse field text. The exactly-one-of constraint is duplicated from the oneOf schema and required-fields block, keeping it short of a 5.

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?

Specific verb ('Returns') plus resource ('detected open-source/CMS components') and explicit scope ('a project (all vaults) or a single vault'). This clearly distinguishes it from siblings like get-security-issues, get-code-smells, and get-contributors without needing to open the schema.

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 gives a hard selection rule ('Provide exactly one of project_id or vault_id') and a prerequisite (full data access / paid plan), but never names an alternative tool or explains when an agent should choose this over the other component-adjacent tools. Usage is implied rather than guided.

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