functions_get_call

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

With no annotations, the description carries the full burden, and it does disclose the full content payload including nested error and stack trace and timings, which is meaningful behavioral detail. However, it never states that this is a non-mutating read, whether call records expire or are retention-limited, or what happens when an id is unknown.

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 dense sentence that front-loads the resource and then lists contents in a scannable order; every item listed is real content of the response. It reads as a fragment without an explicit verb, which slightly weakens the opening.

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?

With no output schema, the description must describe return values, and it does so thoroughly. But for a diagnostic fetch tool with no annotations and no error semantics, an agent is left guessing about read-only status, record retention, and not-found behavior.

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%, so both parameters (id and maxBodyChars) are fully documented in the schema, setting a baseline of 3. The description mentions 'body' and 'response' but adds nothing about truncation behavior or why maxBodyChars matters, so it does not exceed 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?

The description names the resource ('One function call') and enumerates exactly what is returned: cause, request, response, event payload, error with stack trace, console output, timings. An agent can tell it fetches a single call record rather than a list, though it never explicitly contrasts with functions_list_calls or functions_replay_call.

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?

No when-to-use or when-not guidance appears in the description; the only routing hint ('Call id from functions_list_calls') lives in the schema, not the description. An agent must infer that this is the drill-down after listing calls and the pre-step before replaying one.

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