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

Annotations cover safety (readOnlyHint=false, destructiveHint=false), so the bar is lower, yet the description still adds real behavioral context: the operation is idempotent ('No-op if the edge does not exist'). It does not state permission requirements or the response shape, keeping it short of a 5.

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?

Two compact sentences: the operation and edge direction are front-loaded, the idempotency caveat follows, and the API reference link is placed last. No filler.

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 two-parameter, non-destructive-with-idempotency tool with no output schema, the description covers what is removed and what happens when nothing matches. Only minor gaps remain (return value conventions, any authorization requirement).

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 the baseline is 3, but the description goes beyond the schema by explicitly declaring the relationship between the two IDs (which one depends on which). That directionality is genuinely useful context the individual field descriptions only imply.

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?

Precise verb (Remove) plus resource (prerequisite edge), and it disambiguates the direction of the edge with 'task_id depends on depends_on_task_id'. An agent can act without opening the schema or guessing which argument is the dependent one.

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?

Usage is only implied by the operation itself; there is no explicit when-to-use guidance, prerequisites, or comparison to related tools such as update_task or delete_task. The idempotency note helps but is not usage routing.

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