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

Annotations already declare readOnlyHint=true and openWorldHint=false, so safety is covered. The description adds value by previewing what the response contains (status, devices, per-platform sent/failed counts) — important since there is no output schema. It omits behavior on an unknown/expired push id.

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?

A single front-loaded line with zero filler, which is the right size for a trivial getter. The telegraphic, verb-less phrasing is efficient but slightly less crisp than a full clause would be.

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 one-parameter read-only getter with an annotated safety profile and no output schema, the description covers purpose and the shape of the return. Only the not-found/error case is left unstated.

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?

One parameter with 100% schema coverage, so the schema already documents the id and its msg_... format. The description reinforces that the id selects a single push, adding no further syntax but nothing misleading.

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?

It states a specific resource and access path ('One push by id') and enumerates the returned fields (status, devices, sent/failed, per platform), which distinguishes it in spirit from list_pushes. It doesn't name that sibling explicitly, so the differentiation is implied rather than stated.

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: the singular 'by id' suggests a detail lookup versus the list_pushes sibling, but there is no explicit when-to-use, no prerequisite note, and no exclusion guidance.

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