replay

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

With no annotations, the description bears the full burden. It lists actions like 'delete', 'save', 'load', implying state changes, but does not disclose repercussions such as irreversibility of delete, resource usage, or permissions required. The description provides some transparency but lacks depth.

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?

The description front-loads the main purpose but then becomes a long, dense paragraph listing 20+ actions with colons. It is not especially concise or well-structured; a bulleted list or grouping would improve readability. It is adequate but not optimal.

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?

Given the tool's complexity (38 params, many sub-actions, no output schema), the description is incomplete. It covers action purposes but lacks parameter details, return value formats, error conditions, and usage constraints. Significant gaps remain.

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 only 34%, so the description should compensate. However, it does not systematically explain parameters; it only mentions a few (e.g., indices for 'repeat', lines for 'create') in the action list. Most parameters like 'startUrl', 'issueId', 'variables' are not described, leaving gaps.

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 clearly states 'Record and replay command sequences for testing and automation' as the overall purpose. The list of sub-actions further clarifies what the tool can do, but it does not explicitly distinguish this tool from siblings like 'input' or 'navigate' which might also involve command sequences.

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 provides usage guidance for individual sub-actions (e.g., 'repeat (immediately execute commands by history indices - use this to repeat recent actions)'). However, there is no guidance on when to use this tool overall versus alternative sibling tools, nor any exclusions or prerequisites.

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