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

With no annotations provided, the description carries the full transparency burden. It discloses the authentication requirement (Bearer token) and implies side effects via 'execute a request,' but lacks details on error behavior, rate limits, or whether it is read-only or mutating. This is minimal but non-contradictory.

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 two sentences, immediately states the core purpose, and avoids redundancy. It front-loads the primary action and follows with critical usage guidance, with zero wasted words.

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?

Given the tool's generic nature (any of 59 APIs) and no output schema, the description covers essential aspects: purpose, prerequisite discovery, and auth. However, it omits expectations about response format or error handling, which are critical for a generic executor. It is adequate but lacks completeness for high-variance behavior.

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 100%, so the schema already documents all parameters. The description adds little beyond the schema; it repeats the instruction to use search_apis but does not enrich parameter meaning. The baseline of 3 is appropriate because the schema does the heavy lifting.

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 clearly states the tool's purpose: 'Execute a request against any of the 59 registered APIs.' It uses a specific verb+resource pattern and distinguishes itself from siblings by clarifying its role as the executor, while search_apis is for discovery.

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 explicitly instructs to 'Use search_apis first to find the correct api name and operationId,' providing clear prerequisite guidance. It also notes the required authorization header, which is essential for correct invocation. This covers when to use the tool and implies alternatives for discovery.

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