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

Annotations already declare destructiveHint=true, idempotentHint=true, and readOnlyHint=false, so the safety profile is covered. The description adds genuinely new behavioral context: the auth handshake required, the trial-scoped ownership boundary, and the fact that shipped playbooks and other trials' drafts are immune. It does not mention whether the deletion is recoverable or how the caller should confirm intent.

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?

Three tight sentences, front-loaded with the auth prerequisite so the agent cannot miss it before attempting the call. Every sentence carries information, though the auth sentence is long enough to be slightly dense.

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, three-parameter tool with no output schema, the description covers auth, scope, and exclusion boundaries, and annotations cover the danger profile. Missing only the outcome/return behavior and any reversal or confirmation expectation, which are minor given the low parameter count.

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 100%, so session, trial_id, and workflow_id are all already documented in the schema, including the OAuth/key caveat for session. The description only reinforces trial scoping ('for this trial_id') and does not add syntax or format detail beyond the schema. Baseline 3 is appropriate.

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 specific verb and resource ('Delete one private workflow for this trial_id') and immediately narrows scope by excluding shipped playbooks and drafts owned by other trials. An agent can distinguish it from save_workflow, publish_workflow, get_workflow, and list_workflows 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 a clear precondition path (call connect(email) and connect_verify first unless already signed in) and states two explicit exclusions for when the tool will not work. It does not name a sibling alternative for the excluded cases (e.g., where to go to delete a shipped playbook), so it falls short of full when/when-not/alternatives coverage.

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