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

No annotations exist, so the description carries the full burden. The PATCH equivalence does usefully signal partial-update semantics (only supplied fields change) for a tool where all 7 non-key fields are optional and nullable, but permissions, api_key requirements, and what happens to omitted fields are never stated.

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 short sentences with the mutation and its editable fields front-loaded; nothing is padded. The second sentence's PATCH reference is compact but cryptic to an agent without API docs.

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 need not be explained, but for an 8-parameter mutation with zero schema descriptions and zero annotations the description is far too thin. It neither compensates for the undocumented thresholds nor states auth or partial-update behavior explicitly.

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% and the description only gestures at four of eight parameters in vague prose ('words' for query, 'line' unexplained). min_vph, min_multiple, daily_ideas, and api_key are undocumented in both schema and description, leaving the agent to guess at units, types, and accepted values.

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 ('Change') and resource ('a saved search'), which maps to the alert concept despite the name mismatch with update_alert. The enumerated fields ('words, line, frequency or email') partially differentiate it from create_alert/delete_alert/get_alert, but 'line' is opaque and doesn't clearly map to min_vph or min_multiple.

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 indication of when to use this versus create_alert, delete_alert, or run_alert. The 'Same as PATCH /v1/alerts/{alert_id}' reference assumes REST API familiarity and gives no selection criteria for an agent choosing among siblings.

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