add_mcp_server_tool_approval_route

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

Annotations already declare readOnlyHint=false, destructiveHint=false, idempotentHint=false and openWorldHint=true, so the safety profile is partly covered. The description adds nothing on top of that: it doesn't say whether re-adding an existing tool approval fails or overwrites (relevant given idempotentHint=false), what the approval_policy values actually gate, or what permission is needed to register an MCP 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?

It is short, but it is an under-specified fragment that lacks a terminating sentence and conveys no actionable content. Brevity here is a symptom of omission rather than of efficient writing.

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?

This is a write operation with five parameters including a nested object and no output schema, and the description says nothing about required inputs, the meaning of the approval policy choices, or the relationship to the paired remove_/update_ MCP approval tools. An agent would have to reconstruct intent entirely from the identifier and schema.

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 100%, so all five parameters including the approval_policy enum are documented in the schema itself; per the calibration rule this sets a baseline of 3. The description contributes no additional meaning about required fields or the semantics of the nested input_schema.

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 is essentially the tool title with capitalization stripped ('Create Mcp Server Tool Approval' vs. title 'Add Mcp Server Tool Approval Route'), so it reads as a tautological restatement of the name rather than an explanation. It does name a verb and a resource, but an agent gets no more information than it already had from the identifier, and nothing distinguishes it from close siblings like update_mcp_server_approval_policy_route or add_mcp_tool_config_override_route.

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?

There is no statement of when to use this tool, when not to, or which sibling handles the adjacent cases (removing an approval route, listing MCP tools, updating an approval policy). The only guidance available is the implied 'this creates an approval route' inference from the name.

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