sendgrid_get_template

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

Annotations already declare readOnlyHint=true, idempotentHint=true, and destructiveHint=false, so the safety profile is covered. The description adds nothing beyond the annotations – no auth/permission requirements, rate limits, or error behavior for a missing/invalid template ID – so it neither helps nor contradicts.

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?

One front-loaded sentence with zero waste; the action, resource, and lookup key appear immediately. It is short enough that there was room to add a clarifying clause without bloat.

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 simple two-parameter read with full schema coverage and no output schema, this is minimally sufficient – the agent can call it correctly. However, no return-value shape or error behavior is described, which would be helpful given there is no output 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 coverage is 100%, with both api_key and template_id documented in the schema, so the description needs no additional parameter detail. It adds nothing about ID format or API-key sourcing, which is the expected baseline when the schema carries the load.

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?

States a specific verb ('Get') and resource ('SendGrid email template') with the lookup key ('by ID'), so the agent knows exactly what it retrieves. It doesn't name the sibling it differs from (e.g., sendgrid_list_templates), but the singular 'specific ... by ID' framing makes the distinction reasonably evident.

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?

Usage is only implied: 'by ID' suggests it is for fetching a single known template rather than browsing, which is adequate to separate it from list-style siblings. There is no explicit when/when-not guidance or mention of alternatives such as sendgrid_list_templates.

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