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

Annotations already declare destructiveHint=true, openWorldHint=true and idempotentHint=false, but the description adds the substance behind them: it sends product data to the live channel, can replace existing listings, and a later submission does not undo the original channel effects. It also enumerates failure modes (feed_not_generated error, 'not_submittable', 'failed' with message), which no annotation conveys.

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 content is front-loaded and dense with useful detail, but the second sentence ('Use this to send a generated feed to its connected channel') simply restates the first, and the return-shape notation is packed inline with the behavioral warnings. One redundant sentence and mixed ordering of return contract vs. side effects cost it a point.

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?

For a destructive, non-idempotent submission tool with only two required-ish parameters and no output schema, the description covers everything an agent needs: preconditions, the return shape and each status value's meaning, error strings, and the irreversibility of channel effects. Nothing material is left to inference relative to the tool's complexity.

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 0%, so the description must carry the load, and it does: feed_id provenance is given (list_feeds / create_feed) and project_id is flagged as optional. It stops short of explaining what project_id scopes the lookup to, which is the one remaining ambiguity in a two-parameter tool.

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?

States a precise verb+resource ('Submit a generated feed to its sales channel') and immediately bounds the scope: it applies only to API channels with a connection, not file feeds the channel pulls. That distinction plus the named error 'feed_not_generated' lets an agent separate it from siblings like export_feed, get_feed_output, or submit_ad_items without opening any schema.

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?

Gives explicit preconditions (feed must be generated, status='generated' from get_feed_status), a recommended prior step (run verify_feed_attributes before submitting), and an operational rule (confirm the submission with the user). Optionality of project_id is also spelled out, so the agent knows which inputs to gather and in what order.

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