portkey-admin-mcp

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

No annotations are provided, so the description carries the full burden. It discloses key behavioral traits: it's a read-only operation (renders without executing) and returns final messages. However, it lacks details on permissions, rate limits, error handling, or output format specifics. The description adds value but is incomplete for a tool with no annotation coverage.

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, efficient sentence that front-loads the core action and outcome. Every word earns its place, with no redundancy or unnecessary details, making it highly concise and well-structured for quick understanding.

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 complexity (3 parameters with nested objects, no output schema, and no annotations), the description is minimally adequate. It covers the purpose and basic behavior but lacks details on output format, error cases, or integration with sibling tools. Without annotations or output schema, more context would improve completeness for safe agent 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?

Schema description coverage is 100%, so the schema fully documents all parameters. The description adds no additional parameter semantics beyond what the schema provides (e.g., it doesn't explain how variables map to templates or hyperparameter effects). With high schema coverage, the baseline is 3, as the description doesn't compensate but doesn't detract either.

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 specific action ('Render a prompt template by substituting variables') and the resource ('prompt template'), distinguishing it from sibling tools like 'run_prompt_completion' (which executes) and 'create_prompt' (which creates templates). It explicitly mentions the output ('returning the final messages without executing'), which helps differentiate its purpose.

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 provides clear context for when to use this tool: to render a prompt template without execution. It implicitly distinguishes it from 'run_prompt_completion' (which executes) but does not explicitly state when not to use it or name alternatives. The guidance is sufficient but lacks explicit exclusions or named comparisons.

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