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

Annotations already declare readOnlyHint=true, destructiveHint=false, and openWorldHint=true, so safety behavior is covered. The description adds one genuinely useful piece of context by mapping 'note' to the API's 'protocols' resource (GET /protocols/{id}), but says nothing about error behavior for missing ids.

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?

Two short fragments, zero waste, and the identifying scope ('by id') is front-loaded. Slightly cryptic in that the raw endpoint is dropped in without explanation, but nothing is redundant.

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 single-parameter read tool with full schema coverage and complete annotations, this is adequate but thin. With no output schema, a brief note on what a returned note contains (or what happens for an unknown id) would close the remaining gap.

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% and the note_id parameter is fully documented as the CentralStationCRM protocol (note) id. The description adds no syntax, type, or format detail beyond the schema, so the baseline 3 applies.

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 clear resource (a single note / history entry) and the scoping key (by id), which distinguishes it from the sibling centralstationcrm_list_notes. It doesn't explicitly say 'retrieve', but 'Get note' plus the path make the action unambiguous.

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 use when you already have an id, versus list_notes or search_all when you don't. No explicit when-to-use or when-not-to-use statement, and no sibling is named.

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