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

Annotations only declare it is a non-destructive write with no open-world access; the description adds materially more — that data is synced to an external service (Letta), that a fresh revision is required (implying stale-revision rejection), and that no model calls or instruction execution occur, which is a meaningful safety disclosure for a write tool. It does not say whether existing content is replaced or merged.

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 short sentences, the action and its side effect front-loaded, then the prerequisite, then the safety note. 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 write tool with no output schema and no parameter documentation, the definition covers the prerequisite and the sync target but omits conflict behavior (what happens if the revision is stale) and any description of the type values. Adequate to call it correctly, not fully 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?

Schema coverage is 0%, so the description must carry the load. It explains revision semantics indirectly (read first to obtain the current revision), which is the most error-prone parameter, but says nothing about the seven-value type enum or the 12,000-character content limit.

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 concrete verb and resource — save owner-selected private context — plus the side effect of syncing to Letta. It clearly contrasts with the sibling home_read, which is named. Slight vagueness remains about what 'private context' covers, since the seven-value type enum is never characterized.

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?

"Get the current revision with home_read first" gives an explicit prerequisite and names the alternative tool, which is the key routing decision. It stops short of stating when not to use this (e.g., versus home_post or home_public), but the workflow guidance is concrete.

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