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

With no annotations, the description carries the burden, and it does disclose somewhat useful behavioral traits: the HTTP method per action (GET/DELETE/POST), implying which are reads and which are destructive, and the idempotency_key for route. However, it omits auth requirements despite agent_key being required by several variants, and says nothing about side effects of fulfill/cancel.

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 action list is front-loaded and the endpoint-per-clause structure is scannable and dense with useful detail. Minor inefficiency: the prose says 'post' while the actual action enum value is 'create', which forces a small reconciliation.

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 five-action multiplexer with 11 parameters at 9% schema coverage and no output schema, the description covers the main request bodies but leaves gaps: it never states that cancel/fulfill/route require agent_key (per the schema), nor what list returns. Adequate but not complete.

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 only 9%, so the description must compensate, and it does document the key body fields for create (parent_capability_id, desired_input_schema, desired_output_schema, max_price_credits, standing_order), fulfill (capability_id), and route (idempotency_key). That is meaningful added meaning, though several params (token, handle, transfer_id, delete_credential, payment_signature) remain undocumented.

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 names five specific actions (list/create/cancel/fulfill/route) on the 'wanted dependency' resource and maps each to a concrete REST endpoint, so an agent can tell what the tool does. It does not, however, differentiate this tool from siblings like capability_register or capability_call, which occupy adjacent territory.

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?

It enumerates the actions and their endpoints but gives no guidance on when to choose each action or when this tool is preferable to sibling tools. An agent must infer the workflow entirely from the HTTP verbs.

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