entitlement_middleware

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

No annotations are provided, so the description carries the full burden of behavioral disclosure. It does not disclose side effects (generated files, project modification), prerequisites (an existing Express/Next.js/Fastify app), or runtime behavior of the middleware such as how deny_action manifests. The description only restates the literal creation action.

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?

A single 14-word sentence with zero filler and a front-loaded verb. It earns its place, but given the tool's 4-parameter complexity and missing behavioral disclosure, a second sentence would have been justified; as written it is efficient but thin.

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 code-generating tool with 4 parameters, 1 required, 2 enums, no output schema, and no annotations, one sentence is insufficient. Missing context includes what 'plans' should contain, what files are generated or modified, which framework each enum targets, and how denial options (403, redirect, upgrade_prompt) behave. An agent would have to guess at several call-relevant details.

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 only 25% (only api_key is documented, as 'API key for authentication'). The description adds nothing about the required 'plans' parameter's shape (name + feature keys), the meaning of the 'framework' enum, or what 'deny_action' does at runtime. The schema's enums and defaults provide minimal self-documentation, but the description does not compensate for the low 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 states a specific verb ('Create') and resource ('middleware that enforces feature entitlements based on the user's subscription plan'), which clearly identifies the tool's function. Its entitlement/subscription focus is distinguishable from sibling middleware generators like rbac_generate_middleware, rate_generate_middleware, and tenant_generate_middleware, though it does not explicitly name those alternatives.

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?

No guidance is given on when to use this tool versus alternatives. With many sibling middleware generators (rbac, rate, tenant, cors, retry, oauth), the description offers no selection criteria, exclusions, or context about when entitlements middleware is the right choice. The only usage signal is implied by the name and description.

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