render_and_analyze

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

Annotations already say readOnly=false, destructive=false, idempotent=false. The description adds real value beyond that: it discloses that export is preserved, stage/error are reported on analysis failure, and there is no atomic rollback. However, it does not explain the permissions required for writing to the output directory, the relationship between confirm_delete and output_directory, or what 'preserve export' means operationally. The non-atomicity caveat is the strongest disclosure here.

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's a single run-on sentence with semicolons, heavy front-loading missing. Three ideas (render+analyze, preserve export/report failure, no rollback) are compressed until each is hard to parse. It's terse but under-structured rather than concise.

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. But for a tool that writes files, has destructive-adjacent options like confirm_delete, and non-atomic failure behavior, the description leaves major operational questions open: what happens to partial output, what confirm_delete deletes, how dry_run behaves, and what the expected_revision guard does.

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% for the single top-level request parameter, and the description adds essentially nothing about the nested fields (start/end position units, preset_id, output_directory, max_seconds, dry_run, confirm_delete, expected_revision). 'Preset-based master file' vaguely gestures at preset_id, but the many other parameters get no explanation. With low coverage, the description should compensate and doesn't.

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 render and analyze as a combined operation, which is specific enough to tell it apart from render_range or analyze_audio_file alone. But it's compressed into a run-on clause with little clarity that it operates on a 'preset-based master file' – the reader has to parse 'one preset-based master file' to understand the scope. It does convey the fused nature, which matters.

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 explicit when-to-use versus alternatives. The mention of 'preset-based' and the implied coupling with export presets hints at conditions, but an agent isn't told when to pick this over render_range plus analyze separately, or what happens with dry_run. The failure-handling note is behavioral, not usage guidance.

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