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

Annotations already declare readOnlyHint=true, idempotentHint=true, destructiveHint=false. The description adds meaningful behavioral context beyond annotations: that it should be called first with no args, and that the result may be unrelated and can be ignored. This is useful for an agent deciding how much weight to give the output.

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 sentences, both essential. The first states the action and invocation pattern; the second warns about result relevance. No wasted words, and the key instruction is front-loaded.

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 simple resume-thread tool with zero required params and a rich schema, the description plus annotations cover the main operational needs. The sibling list shows alternative memory tools but the description doesn't explicitly contrast with palim_get_context or palim_search. Given the tool's simplicity and the 'ignore if unrelated' guidance, it is nearly complete.

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?

The input schema has 100% description coverage, with clear parameter descriptions for project, tool_source, within_hours, and include_messages. The description adds the strategic context about calling with no args, but doesn't add much beyond the schema for parameter semantics. Baseline 3 is appropriate given high schema coverage.

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?

The description states the tool resumes the user's most recent Palim thread, with specific behavioral guidance to call it first in a new chat. This is clear about the action and resource. However, it doesn't explicitly distinguish it from palim_get_context or palim_search among siblings, though 'call first in a new chat' hints at its unique role.

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?

Provides explicit when-to-use guidance: 'Call first in a new chat, no args' and tells the agent to ignore the result if unrelated. This is strong usage direction, though it doesn't name alternative tools for specific conditions.

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