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

Annotations already declare readOnlyHint, idempotentHint, and destructiveHint, and the description adds 'deterministic signed assessment'—behavioral traits not present in the annotations. This provides meaningful extra context without contradicting the declared hints.

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, front-loaded sentence with no filler words. It is concise, though the brevity arguably contributes to the vagueness. Still, it earns its place as a quick tagline.

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?

The description fails to explain what mcp_task and a2a_task are or what form they should take, leaving the agent unable to construct a valid invocation. The output schema exists, but the input side is completely undefined both in the schema and in the description, making the tool incomplete for practical use.

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?

The input schema has no property definitions and parameter count is 0, so the baseline is 4. The description does not add any semantic meaning to the required fields mcp_task and a2a_task, but since the schema itself has no descriptions, the description is not expected to compensate beyond the baseline.

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?

Description says 'MCP-A2A Task Bridge; deterministic signed assessment over supplied input' but does not state what the tool actually does with the input or what kind of assessment it produces. The verb/resource ('assessment over supplied input') is vague and does not clearly distinguish it from siblings like a2a_transaction_bridge or ap2_mandate_bridge.

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 offers no guidance on when to use this tool, when not to use it, or how it compares to alternatives. There is no mention of prerequisites, selection criteria, or exclusions, leaving the agent to guess based on the name alone.

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