session_trace_replay

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

No annotations are provided, so the description carries the full disclosure burden, and it discloses almost nothing. It does not say whether replay re-executes network traffic, mutates session state, requires an active session, or whether it is safe/reversible; adding 'against a session' hints at a target but not the side effects.

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?

It is a single waste-free sentence, but being one short clause it is under-specified rather than appropriately sized for a four-parameter action tool. Nothing is front-loaded beyond the bare purpose.

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 need not be described, but for a mutation-style tool with no annotations and four undocumented parameters the definition is far from complete. It omits prerequisites, side effects, and the meaning of dry_run/stop_on_error.

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 description coverage is 0% across four parameters, so the description must compensate and does not. 'Trace file' loosely implies trace_path, but dry_run, stop_on_error, and session_id are entirely unexplained in both schema and description, so the defaults and their effects are opaque.

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?

Names a specific verb (Replay) and resource (trace file) plus the target (a session), which is more informative than the neighboring session_trace_start/stop/get/export tools. It never explicitly distinguishes itself from those siblings, but the verb 'replay' is distinctive enough for an agent to infer the difference.

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?

There is no guidance on when to use this versus session_trace_start, session_trace_get, or session_trace_export, no prerequisites, and no mention of when replay is appropriate. The agent must infer all usage context from the name alone.

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