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

Goes well beyond the annotations: it discloses that ingestion is server-side and that the return value is a sha256 handle, then shows exactly how that handle is consumed (attach_audio, or load_quick_sampler_sample with sample_path set to the sha). It also clarifies the 'no desktop needed' baking behavior into the exported .logicx, which is real behavioral context not implied by readOnlyHint=false or idempotentHint=true.

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?

One front-loaded paragraph that opens with the action and the two input modes before diving into downstream usage. Heavily parenthesized and dense, but every clause carries information; minor tightening would help readability without losing content.

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?

No output schema, and the description compensates by explaining that the result is a sha256 and how to use it, plus the ingestion model. Remaining gaps are small: whether session_id must reference an existing session, and whether re-ingesting the same file is deduplicated given idempotentHint=true.

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 75% and the schema itself describes audio_key, audio_url, and filename. The description adds the crucial mutual-exclusivity rule (audio_url OR audio_key) and the workflow that produces audio_key, which the schema does not state. session_id semantics remain unexplained in both places.

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?

Specific verb + resource: 'Add an audio file to a session', immediately split into the two supported sources (public https URL vs. local file via audio_key). It also names the downstream consumers (attach_audio, load_quick_sampler_sample) so the agent understands where the result goes. It does not distinguish this from the near-identical sibling doseedo_audio_to_session, which an agent would have to guess between.

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?

Explicit conditional guidance: 'Give audio_url OR audio_key', with the local-file path spelled out as doseedo_get_upload_url → PUT bytes → pass audio_key. It also states pre-signed result URLs work as-is with no key. What's missing is any when-not guidance or a note on choosing this tool over its sibling.

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