get_changes

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

With no annotations, the description carries the full disclosure burden and does well: it reveals the exact shape of the output (type/member deltas plus commit list) and the failure condition (refs missing from the clone). It omits anything about cost/latency or whether output is truncated, which is a minor gap given a read-only diff is inherently non-destructive.

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?

Front-loaded with the core purpose, then the output contents, then the constraint. Two sentences with almost no filler. The first sentence is long and heavily parenthetical, which slightly hurts scanability, but nothing is wasted.

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?

An output schema exists, so return values needn't be explained (though they partly are). The remaining gap is max_items, a 0%-documented parameter with a truncation implication that matters for a diff tool — an agent could silently miss changes. Everything else needed to call it is present.

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 0%, so the description must compensate. It partially does: the ref pair is explained as git refs accepting tags, branches or SHAs. But max_items is never mentioned — the agent cannot tell whether it caps types, members, commits or all of them — and to_ref's HEAD default is left to the schema.

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 (public API diff) and resource (TelegramBotBase library between two git refs) and enumerates exactly what the result contains: added/removed types, added/removed public members, plus a commit list. None of the siblings (framework_version, list_refs, get_symbol, etc.) do anything comparable, so the agent can select it without ambiguity.

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 supplies an important prerequisite — 'Only refs present in the clone work' — and names the accepted ref kinds (tags, branches, SHAs). However it never states when to prefer this over framework_version or list_refs, nor does it suggest checking list_refs first to validate a ref. Usage is implied rather than guided.

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